From david at thinkingbinaries.com  Thu Sep  1 06:19:35 2016
From: david at thinkingbinaries.com (David Whale)
Date: Thu, 1 Sep 2016 11:19:35 +0100
Subject: [Microbit-Python] micro bit pin drive current
In-Reply-To: <CANw+Mzmzhn_MYj3=J-31T_wFk6miAxs6jBo=hJkiKesZtGJ=3g@mail.gmail.com>
References: <212d867d-7dfc-ba8f-41c4-5ea7a87580e7@yahoo.co.uk>
 <CANw+Mzmzhn_MYj3=J-31T_wFk6miAxs6jBo=hJkiKesZtGJ=3g@mail.gmail.com>
Message-ID: <CABeH_Sunyq5vU_UitJhw6EDvWxNJ8m3shGgr0oksFgfyHg4xdA@mail.gmail.com>

That is true, but unfortunately it is only part of the story.

It's not the pin drive current that could be the problem, it's the
opportunity for an inductive load (a speaker) to cause back-emf that is
above the specified pin voltage of the GPIO pins. Although I haven't done
the maths or looked at a scope trace to see how high in voltage the
back-emf peaks are at given frequencies, it might still be ok in practice
without any coupling or protection given the range of frequencies in use..

However, I spoke to Nicholas Tolervy about this resource, and he uses a
powered speaker such as this:

https://www.amazon.co.uk/gp/product/B0039YP37E/ref=oh_aui_detailpage_o09_s00?ie=UTF8&psc=1

connected with one of these:

https://sciencescope.uk/product/bbc-microbit-sound-cable-2/


I also use one of these...

http://www.maplin.co.uk/p/kitsound-pocketboom-portable-bluetooth-speaker-green-n54dc

Which, incidently, has a nice bass response that works really well with
this fab Python resource!!

https://www.microbit.co.uk/musicfest/that-bass

It's very loud with some powered speakers, in my experience, so in some
environments you should consider a volume control of some sort!

Hope this helps.

David.




___________________________________________________________
David Whale, B.Sc (Hons), MIET
*Software Engineer and IET Schools Liaison Officer, Essex*


On 31 August 2016 at 07:23, Damien George <damien.p.george at gmail.com> wrote:

> There are no additional buffers on the pins.  The microcontroller will
> source/sink its maximum current and then the output voltage will begin
> to drop to keep the current at that maximum (and so act like a current
> regulator/limiter).
>
> On 31 August 2016 at 15:48, fresh.bread via Microbit
> <microbit at python.org> wrote:
> > I'm a bit worried by the diagram on the documentation for the micropython
> > speech module showing a loudspeaker connected directly to pins 0 and 1
> (see
> > http://microbit-micropython.readthedocs.io/en/latest/
> tutorials/speech.html)
> >
> > What is the maximum drive current for the pins. The processor chip only
> > seems to be able to sink/source 0.5ma (or 5ma in high current drive mode)
> > .Are there additional buffers connected to pins 0,1,2 that allow a higher
> > current?
> >
> > Jim
> >
> > _______________________________________________
> > Microbit mailing list
> > Microbit at python.org
> > https://mail.python.org/mailman/listinfo/microbit
> _______________________________________________
> Microbit mailing list
> Microbit at python.org
> https://mail.python.org/mailman/listinfo/microbit
>
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From nigel.kendrick at gmail.com  Thu Sep  1 07:36:14 2016
From: nigel.kendrick at gmail.com (Nigel Kendrick)
Date: Thu, 1 Sep 2016 12:36:14 +0100
Subject: [Microbit-Python] micro bit pin drive current
In-Reply-To: <CABeH_Sunyq5vU_UitJhw6EDvWxNJ8m3shGgr0oksFgfyHg4xdA@mail.gmail.com>
References: <212d867d-7dfc-ba8f-41c4-5ea7a87580e7@yahoo.co.uk>
 <CANw+Mzmzhn_MYj3=J-31T_wFk6miAxs6jBo=hJkiKesZtGJ=3g@mail.gmail.com>
 <CABeH_Sunyq5vU_UitJhw6EDvWxNJ8m3shGgr0oksFgfyHg4xdA@mail.gmail.com>
Message-ID: <CA+ziQARNf20N8cJYwNjJyrPkTd+a_tr8vQTZHpfKF8Ky1j7vpw@mail.gmail.com>

I use a 3v class D bridge amp chip from JRC (NJM2113D - RS Components sell
them) that works well with the micro:bit.

  -- Nigel

On 1 Sep 2016 11:26, "David Whale" <david at thinkingbinaries.com> wrote:

> That is true, but unfortunately it is only part of the story.
>
> It's not the pin drive current that could be the problem, it's the
> opportunity for an inductive load (a speaker) to cause back-emf that is
> above the specified pin voltage of the GPIO pins. Although I haven't done
> the maths or looked at a scope trace to see how high in voltage the
> back-emf peaks are at given frequencies, it might still be ok in practice
> without any coupling or protection given the range of frequencies in use..
>
> However, I spoke to Nicholas Tolervy about this resource, and he uses a
> powered speaker such as this:
>
> https://www.amazon.co.uk/gp/product/B0039YP37E/ref=oh_aui_
> detailpage_o09_s00?ie=UTF8&psc=1
>
> connected with one of these:
>
> https://sciencescope.uk/product/bbc-microbit-sound-cable-2/
>
>
> I also use one of these...
>
> http://www.maplin.co.uk/p/kitsound-pocketboom-portable-
> bluetooth-speaker-green-n54dc
>
> Which, incidently, has a nice bass response that works really well with
> this fab Python resource!!
>
> https://www.microbit.co.uk/musicfest/that-bass
>
> It's very loud with some powered speakers, in my experience, so in some
> environments you should consider a volume control of some sort!
>
> Hope this helps.
>
> David.
>
>
>
>
> ___________________________________________________________
> David Whale, B.Sc (Hons), MIET
> *Software Engineer and IET Schools Liaison Officer, Essex*
>
>
> On 31 August 2016 at 07:23, Damien George <damien.p.george at gmail.com>
> wrote:
>
>> There are no additional buffers on the pins.  The microcontroller will
>> source/sink its maximum current and then the output voltage will begin
>> to drop to keep the current at that maximum (and so act like a current
>> regulator/limiter).
>>
>> On 31 August 2016 at 15:48, fresh.bread via Microbit
>> <microbit at python.org> wrote:
>> > I'm a bit worried by the diagram on the documentation for the
>> micropython
>> > speech module showing a loudspeaker connected directly to pins 0 and 1
>> (see
>> > http://microbit-micropython.readthedocs.io/en/latest/tutoria
>> ls/speech.html)
>> >
>> > What is the maximum drive current for the pins. The processor chip only
>> > seems to be able to sink/source 0.5ma (or 5ma in high current drive
>> mode)
>> > .Are there additional buffers connected to pins 0,1,2 that allow a
>> higher
>> > current?
>> >
>> > Jim
>> >
>> > _______________________________________________
>> > Microbit mailing list
>> > Microbit at python.org
>> > https://mail.python.org/mailman/listinfo/microbit
>> _______________________________________________
>> Microbit mailing list
>> Microbit at python.org
>> https://mail.python.org/mailman/listinfo/microbit
>>
>
>
> _______________________________________________
> Microbit mailing list
> Microbit at python.org
> https://mail.python.org/mailman/listinfo/microbit
>
>
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From jim at groklearning.com  Thu Sep  1 08:02:29 2016
From: jim at groklearning.com (Jim Mussared)
Date: Thu, 1 Sep 2016 22:02:29 +1000
Subject: [Microbit-Python] micro:bit Starter Course from Grok Learning
Message-ID: <CAHPki7JX0AV9SBatZY39qN54YVHuotaqZr7UujmfJXcx8kfgRQ@mail.gmail.com>

hi micro:bit enthusiasts!

As I mentioned recently on this list, Grok Learning have been working
on a micro:bit MicroPython course targeted at Grade 7 students.

We're excited to announce that the starter version of this course,
including the simulator, is now available for free on our website --
http://grok.gl/microbit-starter

This course is the first week of what will become the micro:bit stream
of the Grok Code Quest, starting October 31 --
http://grok.gl/codequest-microbit

Please feel free to share the course with anyone you know who might be
interested - whether they're developers, teachers or enthusiasts.

Our goal is also to teach real programming concepts, instead of just a
walkthrough style series of instructions, so students will be equipped
with the skills to create their own programs. We also include a series
of problems/challenges for the students to implement using the
simulated micro:bit, with an automated marker to verify the solutions.

We've got a lot more planned for the full course, including all of the
onboard sensors, plus a bunch of external components right up to a
simulator of the Kitronik line-following buggy. You can see some of
this in action starting at 17:15 in this video from PyCon Australia --
https://youtu.be/oCEZyJqkMrE?t=17m15s

We'd love to hear your feedback and suggestions!

Jim Mussared
Grok Learning

From nigel.kendrick at gmail.com  Thu Sep  1 08:12:43 2016
From: nigel.kendrick at gmail.com (Nigel Kendrick)
Date: Thu, 1 Sep 2016 13:12:43 +0100
Subject: [Microbit-Python] micro bit pin drive current
In-Reply-To: <CA+ziQARNf20N8cJYwNjJyrPkTd+a_tr8vQTZHpfKF8Ky1j7vpw@mail.gmail.com>
References: <212d867d-7dfc-ba8f-41c4-5ea7a87580e7@yahoo.co.uk>
 <CANw+Mzmzhn_MYj3=J-31T_wFk6miAxs6jBo=hJkiKesZtGJ=3g@mail.gmail.com>
 <CABeH_Sunyq5vU_UitJhw6EDvWxNJ8m3shGgr0oksFgfyHg4xdA@mail.gmail.com>
 <CA+ziQARNf20N8cJYwNjJyrPkTd+a_tr8vQTZHpfKF8Ky1j7vpw@mail.gmail.com>
Message-ID: <CA+ziQAQ8mRMaL5qh8dzaKui=RA5GYXcwdgUNh-3Bo1kYkZ8rwA@mail.gmail.com>

Minor correction - the NJM2113D is a class AB chip. I was also playing
around with a class D chip from Texas Instruments, but used the JRC part in
the end.

-- Nigel

On 1 Sep 2016 12:36, "Nigel Kendrick" <nigel.kendrick at gmail.com> wrote:

> I use a 3v class D bridge amp chip from JRC (NJM2113D - RS Components sell
> them) that works well with the micro:bit.
>
>   -- Nigel
>
> On 1 Sep 2016 11:26, "David Whale" <david at thinkingbinaries.com> wrote:
>
>> That is true, but unfortunately it is only part of the story.
>>
>> It's not the pin drive current that could be the problem, it's the
>> opportunity for an inductive load (a speaker) to cause back-emf that is
>> above the specified pin voltage of the GPIO pins. Although I haven't done
>> the maths or looked at a scope trace to see how high in voltage the
>> back-emf peaks are at given frequencies, it might still be ok in practice
>> without any coupling or protection given the range of frequencies in use..
>>
>> However, I spoke to Nicholas Tolervy about this resource, and he uses a
>> powered speaker such as this:
>>
>> https://www.amazon.co.uk/gp/product/B0039YP37E/ref=oh_aui_de
>> tailpage_o09_s00?ie=UTF8&psc=1
>>
>> connected with one of these:
>>
>> https://sciencescope.uk/product/bbc-microbit-sound-cable-2/
>>
>>
>> I also use one of these...
>>
>> http://www.maplin.co.uk/p/kitsound-pocketboom-portable-bluet
>> ooth-speaker-green-n54dc
>>
>> Which, incidently, has a nice bass response that works really well with
>> this fab Python resource!!
>>
>> https://www.microbit.co.uk/musicfest/that-bass
>>
>> It's very loud with some powered speakers, in my experience, so in some
>> environments you should consider a volume control of some sort!
>>
>> Hope this helps.
>>
>> David.
>>
>>
>>
>>
>> ___________________________________________________________
>> David Whale, B.Sc (Hons), MIET
>> *Software Engineer and IET Schools Liaison Officer, Essex*
>>
>>
>> On 31 August 2016 at 07:23, Damien George <damien.p.george at gmail.com>
>> wrote:
>>
>>> There are no additional buffers on the pins.  The microcontroller will
>>> source/sink its maximum current and then the output voltage will begin
>>> to drop to keep the current at that maximum (and so act like a current
>>> regulator/limiter).
>>>
>>> On 31 August 2016 at 15:48, fresh.bread via Microbit
>>> <microbit at python.org> wrote:
>>> > I'm a bit worried by the diagram on the documentation for the
>>> micropython
>>> > speech module showing a loudspeaker connected directly to pins 0 and 1
>>> (see
>>> > http://microbit-micropython.readthedocs.io/en/latest/tutoria
>>> ls/speech.html)
>>> >
>>> > What is the maximum drive current for the pins. The processor chip only
>>> > seems to be able to sink/source 0.5ma (or 5ma in high current drive
>>> mode)
>>> > .Are there additional buffers connected to pins 0,1,2 that allow a
>>> higher
>>> > current?
>>> >
>>> > Jim
>>> >
>>> > _______________________________________________
>>> > Microbit mailing list
>>> > Microbit at python.org
>>> > https://mail.python.org/mailman/listinfo/microbit
>>> _______________________________________________
>>> Microbit mailing list
>>> Microbit at python.org
>>> https://mail.python.org/mailman/listinfo/microbit
>>>
>>
>>
>> _______________________________________________
>> Microbit mailing list
>> Microbit at python.org
>> https://mail.python.org/mailman/listinfo/microbit
>>
>>
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From ntoll at ntoll.org  Thu Sep  1 08:31:07 2016
From: ntoll at ntoll.org (Nicholas H.Tollervey)
Date: Thu, 1 Sep 2016 13:31:07 +0100
Subject: [Microbit-Python] micro:bit Starter Course from Grok Learning
In-Reply-To: <CAHPki7JX0AV9SBatZY39qN54YVHuotaqZr7UujmfJXcx8kfgRQ@mail.gmail.com>
References: <CAHPki7JX0AV9SBatZY39qN54YVHuotaqZr7UujmfJXcx8kfgRQ@mail.gmail.com>
Message-ID: <acc26331-f22c-c944-1726-f583d472c45d@ntoll.org>

This is stonkingly good work! Can't wait to see what people make of it.
It's also a healthy sign that MicroPython on the micro:bit is
flourishing if non-officially BBC groups and organisations are creating
things outside the BBC partnership fold.

Many congratulations to the Grok team.

:-)

N.

On 01/09/16 13:02, Jim Mussared via Microbit wrote:
> hi micro:bit enthusiasts!
> 
> As I mentioned recently on this list, Grok Learning have been working
> on a micro:bit MicroPython course targeted at Grade 7 students.
> 
> We're excited to announce that the starter version of this course,
> including the simulator, is now available for free on our website --
> http://grok.gl/microbit-starter
> 
> This course is the first week of what will become the micro:bit stream
> of the Grok Code Quest, starting October 31 --
> http://grok.gl/codequest-microbit
> 
> Please feel free to share the course with anyone you know who might be
> interested - whether they're developers, teachers or enthusiasts.
> 
> Our goal is also to teach real programming concepts, instead of just a
> walkthrough style series of instructions, so students will be equipped
> with the skills to create their own programs. We also include a series
> of problems/challenges for the students to implement using the
> simulated micro:bit, with an automated marker to verify the solutions.
> 
> We've got a lot more planned for the full course, including all of the
> onboard sensors, plus a bunch of external components right up to a
> simulator of the Kitronik line-following buggy. You can see some of
> this in action starting at 17:15 in this video from PyCon Australia --
> https://youtu.be/oCEZyJqkMrE?t=17m15s
> 
> We'd love to hear your feedback and suggestions!
> 
> Jim Mussared
> Grok Learning
> _______________________________________________
> Microbit mailing list
> Microbit at python.org
> https://mail.python.org/mailman/listinfo/microbit
> 


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From fresh.bread at yahoo.co.uk  Fri Sep  2 16:17:30 2016
From: fresh.bread at yahoo.co.uk (fresh.bread)
Date: Fri, 2 Sep 2016 21:17:30 +0100
Subject: [Microbit-Python] micro bit pin drive current
In-Reply-To: <CANw+Mzmzhn_MYj3=J-31T_wFk6miAxs6jBo=hJkiKesZtGJ=3g@mail.gmail.com>
References: <212d867d-7dfc-ba8f-41c4-5ea7a87580e7@yahoo.co.uk>
 <CANw+Mzmzhn_MYj3=J-31T_wFk6miAxs6jBo=hJkiKesZtGJ=3g@mail.gmail.com>
Message-ID: <4334f134-e76c-feb4-620e-da6195dad09a@yahoo.co.uk>

Interesting, slightly off topic but is the same true of the pyboard?



> There are no additional buffers on the pins.  The microcontroller will
> source/sink its maximum current and then the output voltage will begin
> to drop to keep the current at that maximum (and so act like a current
> regulator/limiter).
>
> On 31 August 2016 at 15:48, fresh.bread via Microbit
> <microbit at python.org> wrote:
>> I'm a bit worried by the diagram on the documentation for the micropython
>> speech module showing a loudspeaker connected directly to pins 0 and 1 (see
>> http://microbit-micropython.readthedocs.io/en/latest/tutorials/speech.html)
>>
>> What is the maximum drive current for the pins. The processor chip only
>> seems to be able to sink/source 0.5ma (or 5ma in high current drive mode)
>> .Are there additional buffers connected to pins 0,1,2 that allow a higher
>> current?
>>
>> Jim
>>
>> _______________________________________________
>> Microbit mailing list
>> Microbit at python.org
>> https://mail.python.org/mailman/listinfo/microbit
> _______________________________________________
> Microbit mailing list
> Microbit at python.org
> https://mail.python.org/mailman/listinfo/microbit
>


From fresh.bread at yahoo.co.uk  Fri Sep  2 16:28:05 2016
From: fresh.bread at yahoo.co.uk (fresh.bread)
Date: Fri, 2 Sep 2016 21:28:05 +0100
Subject: [Microbit-Python] micro bit pin drive current
In-Reply-To: <CA+ziQAQ8mRMaL5qh8dzaKui=RA5GYXcwdgUNh-3Bo1kYkZ8rwA@mail.gmail.com>
References: <212d867d-7dfc-ba8f-41c4-5ea7a87580e7@yahoo.co.uk>
 <CANw+Mzmzhn_MYj3=J-31T_wFk6miAxs6jBo=hJkiKesZtGJ=3g@mail.gmail.com>
 <CABeH_Sunyq5vU_UitJhw6EDvWxNJ8m3shGgr0oksFgfyHg4xdA@mail.gmail.com>
 <CA+ziQARNf20N8cJYwNjJyrPkTd+a_tr8vQTZHpfKF8Ky1j7vpw@mail.gmail.com>
 <CA+ziQAQ8mRMaL5qh8dzaKui=RA5GYXcwdgUNh-3Bo1kYkZ8rwA@mail.gmail.com>
Message-ID: <6407f522-c9dc-c6ea-2d5a-a5ac09e8c970@yahoo.co.uk>

While I do appreciate that using a Class D amplifier is probably the 
bells and whistles solution, I can't help thinking that it is a bit 
over-the-top. For me anyway, the beauty of the microbit is its 
minimalism and wearablity. It is my initial thought  that enough 
protection against inductive voltage spikes can be achieved by soldering 
a snubber diode across the terminals of the speaker. And if that  causes 
distortion, too bad; it's a microbit, it's supposed to sound like a Dalek.



> Minor correction - the NJM2113D is a class AB chip. I was also playing
> around with a class D chip from Texas Instruments, but used the JRC part in
> the end.
>
> -- Nigel
>
> On 1 Sep 2016 12:36, "Nigel Kendrick" <nigel.kendrick at gmail.com> wrote:
>
>> I use a 3v class D bridge amp chip from JRC (NJM2113D - RS Components sell
>> them) that works well with the micro:bit.
>>
>>    -- Nigel
>>
>> On 1 Sep 2016 11:26, "David Whale" <david at thinkingbinaries.com> wrote:
>>
>>> That is true, but unfortunately it is only part of the story.
>>>
>>> It's not the pin drive current that could be the problem, it's the
>>> opportunity for an inductive load (a speaker) to cause back-emf that is
>>> above the specified pin voltage of the GPIO pins. Although I haven't done
>>> the maths or looked at a scope trace to see how high in voltage the
>>> back-emf peaks are at given frequencies, it might still be ok in practice
>>> without any coupling or protection given the range of frequencies in use..
>>>
>>> However, I spoke to Nicholas Tolervy about this resource, and he uses a
>>> powered speaker such as this:
>>>
>>> https://www.amazon.co.uk/gp/product/B0039YP37E/ref=oh_aui_de
>>> tailpage_o09_s00?ie=UTF8&psc=1
>>>
>>> connected with one of these:
>>>
>>> https://sciencescope.uk/product/bbc-microbit-sound-cable-2/
>>>
>>>
>>> I also use one of these...
>>>
>>> http://www.maplin.co.uk/p/kitsound-pocketboom-portable-bluet
>>> ooth-speaker-green-n54dc
>>>
>>> Which, incidently, has a nice bass response that works really well with
>>> this fab Python resource!!
>>>
>>> https://www.microbit.co.uk/musicfest/that-bass
>>>
>>> It's very loud with some powered speakers, in my experience, so in some
>>> environments you should consider a volume control of some sort!
>>>
>>> Hope this helps.
>>>
>>> David.
>>>
>>>
>>>
>>>
>>> ___________________________________________________________
>>> David Whale, B.Sc (Hons), MIET
>>> *Software Engineer and IET Schools Liaison Officer, Essex*
>>>
>>>
>>> On 31 August 2016 at 07:23, Damien George <damien.p.george at gmail.com>
>>> wrote:
>>>
>>>> There are no additional buffers on the pins.  The microcontroller will
>>>> source/sink its maximum current and then the output voltage will begin
>>>> to drop to keep the current at that maximum (and so act like a current
>>>> regulator/limiter).
>>>>
>>>> On 31 August 2016 at 15:48, fresh.bread via Microbit
>>>> <microbit at python.org> wrote:
>>>>> I'm a bit worried by the diagram on the documentation for the
>>>> micropython
>>>>> speech module showing a loudspeaker connected directly to pins 0 and 1
>>>> (see
>>>>> http://microbit-micropython.readthedocs.io/en/latest/tutoria
>>>> ls/speech.html)
>>>>> What is the maximum drive current for the pins. The processor chip only
>>>>> seems to be able to sink/source 0.5ma (or 5ma in high current drive
>>>> mode)
>>>>> .Are there additional buffers connected to pins 0,1,2 that allow a
>>>> higher
>>>>> current?
>>>>>
>>>>> Jim
>>>>>
>>>>> _______________________________________________
>>>>> Microbit mailing list
>>>>> Microbit at python.org
>>>>> https://mail.python.org/mailman/listinfo/microbit
>>>> _______________________________________________
>>>> Microbit mailing list
>>>> Microbit at python.org
>>>> https://mail.python.org/mailman/listinfo/microbit
>>>>
>>>
>>> _______________________________________________
>>> Microbit mailing list
>>> Microbit at python.org
>>> https://mail.python.org/mailman/listinfo/microbit
>>>
>>>
>
>
> _______________________________________________
> Microbit mailing list
> Microbit at python.org
> https://mail.python.org/mailman/listinfo/microbit


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From microbit at sheep.art.pl  Fri Sep  2 16:27:09 2016
From: microbit at sheep.art.pl (Radomir Dopieralski)
Date: Fri, 2 Sep 2016 22:27:09 +0200
Subject: [Microbit-Python] micro bit pin drive current
In-Reply-To: <4334f134-e76c-feb4-620e-da6195dad09a@yahoo.co.uk>
References: <212d867d-7dfc-ba8f-41c4-5ea7a87580e7@yahoo.co.uk>
 <CANw+Mzmzhn_MYj3=J-31T_wFk6miAxs6jBo=hJkiKesZtGJ=3g@mail.gmail.com>
 <4334f134-e76c-feb4-620e-da6195dad09a@yahoo.co.uk>
Message-ID: <20160902222709.7cddb27e@ghostwheel>

I'm not sure about the PyBoard, but the ESP8266 has a "snapback"
circuit on every gpio pin, which basically shorts the pin to the ground
when the voltage on it exceeds 6V. This is supposed to protect it from
ESD, among other things.

I suspect that both the micro:bit and the PyBoard may have similar
circuits on them, as this is a rather standard practice.


On Fri, 2 Sep 2016 21:17:30 +0100
"fresh.bread via Microbit" <microbit at python.org> wrote:

> Interesting, slightly off topic but is the same true of the pyboard?
> 
> > There are no additional buffers on the pins.  The microcontroller
> > will source/sink its maximum current and then the output voltage
> > will begin to drop to keep the current at that maximum (and so act
> > like a current regulator/limiter).
> >
> > On 31 August 2016 at 15:48, fresh.bread via Microbit
> > <microbit at python.org> wrote:
> >> I'm a bit worried by the diagram on the documentation for the
> >> micropython speech module showing a loudspeaker connected directly
> >> to pins 0 and 1 (see
> >> http://microbit-micropython.readthedocs.io/en/latest/tutorials/speech.html)
> >>
> >> What is the maximum drive current for the pins. The processor chip
> >> only seems to be able to sink/source 0.5ma (or 5ma in high current
> >> drive mode) .Are there additional buffers connected to pins 0,1,2
> >> that allow a higher current?

-- 
Radomir Dopieralski

From david at thinkingbinaries.com  Fri Sep  2 16:57:08 2016
From: david at thinkingbinaries.com (David Whale)
Date: Fri, 2 Sep 2016 21:57:08 +0100
Subject: [Microbit-Python] micro bit pin drive current
In-Reply-To: <20160902222709.7cddb27e@ghostwheel>
References: <212d867d-7dfc-ba8f-41c4-5ea7a87580e7@yahoo.co.uk>
 <CANw+Mzmzhn_MYj3=J-31T_wFk6miAxs6jBo=hJkiKesZtGJ=3g@mail.gmail.com>
 <4334f134-e76c-feb4-620e-da6195dad09a@yahoo.co.uk>
 <20160902222709.7cddb27e@ghostwheel>
Message-ID: <CABeH_StRKaXagFfo4ePG-Dt49MnXZbmLEtgETR5hpS6GmEK3Ug@mail.gmail.com>

There are 19 GPIO's on the micro:bit that make it to the edge connector,
and I don't see 38 (19 pairs) of protection diodes on the back of my
micro:bit. The NRF51 data-sheet on page 37 table 19 parameter VIO is
specified as an absolute maximum of VDD+0.3V and -0.3V. So as long as any
back-emf from any arbitrary speaker plugged in raw into the micro:bit
doesn't exceed that range, the micro:bit will not be stressed outside of
it's design parameters.

However, when the schematics are released, we'll be able to turn that from
a 'suspect' into a more authoritative answer.

>
>
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From nevil.hunt at hotmail.co.uk  Sat Sep  3 11:32:20 2016
From: nevil.hunt at hotmail.co.uk (Nevil Hunt)
Date: Sat, 3 Sep 2016 15:32:20 +0000
Subject: [Microbit-Python] PyCon UK zbit:connect proposal
In-Reply-To: <CAENJrP=94tbySRj9Pauvy8y=jsP0LG9BMeVvij3UCJmnxUnfjw@mail.gmail.com>
References: <DB5PR08MB09665029963DFFA62F365761C3E30@DB5PR08MB0966.eurprd08.prod.outlook.com>,
 <CAENJrP=94tbySRj9Pauvy8y=jsP0LG9BMeVvij3UCJmnxUnfjw@mail.gmail.com>
Message-ID: <DB5PR08MB096654A14C795D57CA60850FC3E40@DB5PR08MB0966.eurprd08.prod.outlook.com>

Thanks to Peter and Nicholas for sorting out my PyCon proposal!

This means I will be at PyCon on the Friday demoing various micro:bit add-ons so if there are any micro:bit Pythoners there that day please come over and say "hello!"


Nevil

________________________________
From: Microbit <microbit-bounces+nevil.hunt=hotmail.co.uk at python.org> on behalf of Peter Inglesby <peter.inglesby at gmail.com>
Sent: 31 August 2016 09:33
To: For Pythonic MicroBit related discussions
Subject: Re: [Microbit-Python] PyCon UK zbit:connect proposal

Hi Nevil,

I'm the chair of PyCon UK this year, and I'm really sorry that there's been a lack of communication here.

I'll look into this today.

Thanks for being understanding,

Peter.

On 31 August 2016 at 08:43, Nevil Hunt <nevil.hunt at hotmail.co.uk<mailto:nevil.hunt at hotmail.co.uk>> wrote:

Hi,


In June I put forward a proposal to demonstrate my prototype "zbit:connect" boards for the BBC micro:bit on the Friday at this years PyCon UK. At the time I got an email acknowledging receipt of the proposal but since then I've not heard anything. Last week I sent another email but I've still not heard anything. Does anyone know who else I could contact?


The "zbit:connect" boards make it easier to attach more sophisticated electronics to the micro:bit such as boards using the I2C and/or SPI busses and the only one of the 4 main micro:bit languages which supports driving these busses is micro python, hence it would be good to demonstrate them at PyCon UK to showcase some of the things micro python can do! I was looking to have space for a couple of tables for people to drop by during the day for a demo.


Cheers,


Nevil

_______________________________________________
Microbit mailing list
Microbit at python.org<mailto:Microbit at python.org>
https://mail.python.org/mailman/listinfo/microbit


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From leonaso43 at googlemail.com  Mon Sep  5 10:09:52 2016
From: leonaso43 at googlemail.com (Leona So)
Date: Mon, 5 Sep 2016 15:09:52 +0100
Subject: [Microbit-Python] PyCon UK proposal - Enriching Maths and
 Physics teaching with Micro:bit motion sensors
In-Reply-To: <5770716A.5090906@stevesimmons.com>
References: <57706E55.5090605@stevesimmons.com>
 <5770716A.5090906@stevesimmons.com>
Message-ID: <CABQC_xpnSQ6xrAqBPOQNjBjPL0LLpr_L7XgjeumLnUV_H6TvBw@mail.gmail.com>

Hi Stephen,

Do you have any updated information regarding this?

Thanks.

Regards,


Leona

On Mon, Jun 27, 2016 at 1:20 AM, Stephen Simmons <mail at stevesimmons.com>
wrote:

> Hi everyone,
>
> I mentioned on this list a couple of weeks ago an idea to run a session at
> PyCon UK Teachers' Day on using the Micro:bit's motion sensors.
>
> A number of people - including Leona, Steve and Nigel (Cc-ed) - replied
> wanting to get involved.
>
> Encouraged by this, I have just submitted the outline below. It hopefully
> gives the conference organisers enough to say "Yup, go for it" while
> leaving a lot of space for us to decide exactly what to present.
>
> I am on holiday next week so will finally have time to email everyone who
> has expressed interest about working together sorting out the details.
>
> Thanks
> Stephen
>
>
>
> *Title: *
> Enriching Maths and Physics teaching with Micro:bit motion sensors
>
> *What are you proposing? *
> A workshop for Teachers' Day
> (duration/number of attendees are flexible. TBD with PyCon UK organisers)
>
> *Abstract: *
> The BBC Micro:bit has powerful accelerometer and compass motion sensors.
> While they are fun for kids to play with, we show how they can also be used
> in class to bring some key Maths and Physics principles to life.
>
> This workshop session is intended for teachers who want to learn about
> using  micro:bit in their classes. No specific knowledge of micro:bit or
> Python programming is assumed. People who already know Python and micro:bit
> are also welcome to join in, especially if you can help the teachers get
> started.
>
> Teachers and helpers are asked to send their ideas for teaching examples
> to me at mail at stevesimmons.com well before the Teachers' Day. We will
> write up several examples to present in full, with some others as group
> exercises.
>
> *Why will people be interested: *
> This is a practical session to help teachers integrate micro:bit into
> their classes. It can accommodate all levels of experience and teachers and
> non-teachers are welcome.
>
> *What level of audience: *
> Novice
>
> *More information about you (public): *
> Stephen has been a Python programmer since 2000. He trained as a
> mathematician and electrical engineer, with a PhD in signal processing for
> radar target detection. After a period as a management consultant, he
> worked for credit card companies in Australia and The Netherlands, running
> areas like marketing, risk, operations and strategy. Six years ago, he
> moved back into technology and joined JPMorgan in London, where his team
> uses Python to build trading, risk management and analytics systems.
>
> *More information about you (private): *
> I presented the tutorial "Pandas from the Inside" at PyData London on 6
> May 2016. I have also submitted a separate proposal on motion sensors data
> fusion for the main PyCon UK conference.
>
>
>
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From nigel.kendrick at gmail.com  Mon Sep  5 10:26:24 2016
From: nigel.kendrick at gmail.com (Nigel Kendrick)
Date: Mon, 05 Sep 2016 15:26:24 +0100
Subject: [Microbit-Python] PyCon UK proposal - Enriching Maths and
 Physics teaching with Micro:bit motion sensors
In-Reply-To: <CABQC_xpnSQ6xrAqBPOQNjBjPL0LLpr_L7XgjeumLnUV_H6TvBw@mail.gmail.com>
References: <57706E55.5090605@stevesimmons.com>
 <5770716A.5090906@stevesimmons.com>
 <CABQC_xpnSQ6xrAqBPOQNjBjPL0LLpr_L7XgjeumLnUV_H6TvBw@mail.gmail.com>
Message-ID: <30A901C2-9FB4-4705-93B1-4D7A160251C6@gmail.com>

Ditto. I'm still ready, willing and able to check out code and work on any material etc., but I'm not now going to attend PyCon due to a clash with a work commitment.

Nigel Kendrick

On 5 September 2016 15:09:52 BST, Leona So <leonaso43 at googlemail.com> wrote:
>Hi Stephen,
>
>Do you have any updated information regarding this?
>
>Thanks.
>
>Regards,
>
>
>Leona
>
>On Mon, Jun 27, 2016 at 1:20 AM, Stephen Simmons
><mail at stevesimmons.com>
>wrote:
>
>> Hi everyone,
>>
>> I mentioned on this list a couple of weeks ago an idea to run a
>session at
>> PyCon UK Teachers' Day on using the Micro:bit's motion sensors.
>>
>> A number of people - including Leona, Steve and Nigel (Cc-ed) -
>replied
>> wanting to get involved.
>>
>> Encouraged by this, I have just submitted the outline below. It
>hopefully
>> gives the conference organisers enough to say "Yup, go for it" while
>> leaving a lot of space for us to decide exactly what to present.
>>
>> I am on holiday next week so will finally have time to email everyone
>who
>> has expressed interest about working together sorting out the
>details.
>>
>> Thanks
>> Stephen
>>
>>
>>
>> *Title: *
>> Enriching Maths and Physics teaching with Micro:bit motion sensors
>>
>> *What are you proposing? *
>> A workshop for Teachers' Day
>> (duration/number of attendees are flexible. TBD with PyCon UK
>organisers)
>>
>> *Abstract: *
>> The BBC Micro:bit has powerful accelerometer and compass motion
>sensors.
>> While they are fun for kids to play with, we show how they can also
>be used
>> in class to bring some key Maths and Physics principles to life.
>>
>> This workshop session is intended for teachers who want to learn
>about
>> using  micro:bit in their classes. No specific knowledge of micro:bit
>or
>> Python programming is assumed. People who already know Python and
>micro:bit
>> are also welcome to join in, especially if you can help the teachers
>get
>> started.
>>
>> Teachers and helpers are asked to send their ideas for teaching
>examples
>> to me at mail at stevesimmons.com well before the Teachers' Day. We will
>> write up several examples to present in full, with some others as
>group
>> exercises.
>>
>> *Why will people be interested: *
>> This is a practical session to help teachers integrate micro:bit into
>> their classes. It can accommodate all levels of experience and
>teachers and
>> non-teachers are welcome.
>>
>> *What level of audience: *
>> Novice
>>
>> *More information about you (public): *
>> Stephen has been a Python programmer since 2000. He trained as a
>> mathematician and electrical engineer, with a PhD in signal
>processing for
>> radar target detection. After a period as a management consultant, he
>> worked for credit card companies in Australia and The Netherlands,
>running
>> areas like marketing, risk, operations and strategy. Six years ago,
>he
>> moved back into technology and joined JPMorgan in London, where his
>team
>> uses Python to build trading, risk management and analytics systems.
>>
>> *More information about you (private): *
>> I presented the tutorial "Pandas from the Inside" at PyData London on
>6
>> May 2016. I have also submitted a separate proposal on motion sensors
>data
>> fusion for the main PyCon UK conference.
>>
>>
>>
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From leonaso43 at googlemail.com  Mon Sep  5 10:29:59 2016
From: leonaso43 at googlemail.com (Leona So)
Date: Mon, 5 Sep 2016 15:29:59 +0100
Subject: [Microbit-Python] PyCon UK proposal - Enriching Maths and
 Physics teaching with Micro:bit motion sensors
In-Reply-To: <30A901C2-9FB4-4705-93B1-4D7A160251C6@gmail.com>
References: <57706E55.5090605@stevesimmons.com>
 <5770716A.5090906@stevesimmons.com>
 <CABQC_xpnSQ6xrAqBPOQNjBjPL0LLpr_L7XgjeumLnUV_H6TvBw@mail.gmail.com>
 <30A901C2-9FB4-4705-93B1-4D7A160251C6@gmail.com>
Message-ID: <CABQC_xo_JHMQa+9Mk=YYPKsoD3TkD=XPHPzrv_nAJL37RW_A+w@mail.gmail.com>

I won't be going either because of work commitment, one of my colleagues
will though. But, I am still ready and can't wait to get it tested if this
is going ahead!

On Mon, Sep 5, 2016 at 3:26 PM, Nigel Kendrick <nigel.kendrick at gmail.com>
wrote:

> Ditto. I'm still ready, willing and able to check out code and work on any
> material etc., but I'm not now going to attend PyCon due to a clash with a
> work commitment.
>
> Nigel Kendrick
>
>
> On 5 September 2016 15:09:52 BST, Leona So <leonaso43 at googlemail.com>
> wrote:
>>
>> Hi Stephen,
>>
>> Do you have any updated information regarding this?
>>
>> Thanks.
>>
>> Regards,
>>
>>
>> Leona
>>
>> On Mon, Jun 27, 2016 at 1:20 AM, Stephen Simmons <mail at stevesimmons.com>
>> wrote:
>>
>>> Hi everyone,
>>>
>>> I mentioned on this list a couple of weeks ago an idea to run a session
>>> at PyCon UK Teachers' Day on using the Micro:bit's motion sensors.
>>>
>>> A number of people - including Leona, Steve and Nigel (Cc-ed) - replied
>>> wanting to get involved.
>>>
>>> Encouraged by this, I have just submitted the outline below. It
>>> hopefully gives the conference organisers enough to say "Yup, go for it"
>>> while leaving a lot of space for us to decide exactly what to present.
>>>
>>> I am on holiday next week so will finally have time to email everyone
>>> who has expressed interest about working together sorting out the details.
>>>
>>> Thanks
>>> Stephen
>>>
>>>
>>>
>>> *Title: *
>>> Enriching Maths and Physics teaching with Micro:bit motion sensors
>>>
>>> *What are you proposing? *
>>> A workshop for Teachers' Day
>>> (duration/number of attendees are flexible. TBD with PyCon UK organisers)
>>>
>>> *Abstract: *
>>> The BBC Micro:bit has powerful accelerometer and compass motion sensors.
>>> While they are fun for kids to play with, we show how they can also be used
>>> in class to bring some key Maths and Physics principles to life.
>>>
>>> This workshop session is intended for teachers who want to learn about
>>> using  micro:bit in their classes. No specific knowledge of micro:bit or
>>> Python programming is assumed. People who already know Python and micro:bit
>>> are also welcome to join in, especially if you can help the teachers get
>>> started.
>>>
>>> Teachers and helpers are asked to send their ideas for teaching examples
>>> to me at mail at stevesimmons.com well before the Teachers' Day. We will
>>> write up several examples to present in full, with some others as group
>>> exercises.
>>>
>>> *Why will people be interested: *
>>> This is a practical session to help teachers integrate micro:bit into
>>> their classes. It can accommodate all levels of experience and teachers and
>>> non-teachers are welcome.
>>>
>>> *What level of audience: *
>>> Novice
>>>
>>> *More information about you (public): *
>>> Stephen has been a Python programmer since 2000. He trained as a
>>> mathematician and electrical engineer, with a PhD in signal processing for
>>> radar target detection. After a period as a management consultant, he
>>> worked for credit card companies in Australia and The Netherlands, running
>>> areas like marketing, risk, operations and strategy. Six years ago, he
>>> moved back into technology and joined JPMorgan in London, where his team
>>> uses Python to build trading, risk management and analytics systems.
>>>
>>> *More information about you (private): *
>>> I presented the tutorial "Pandas from the Inside" at PyData London on 6
>>> May 2016. I have also submitted a separate proposal on motion sensors data
>>> fusion for the main PyCon UK conference.
>>>
>>>
>>>
>>
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From mail at stevesimmons.com  Mon Sep  5 12:21:08 2016
From: mail at stevesimmons.com (Stephen Simmons)
Date: Mon, 05 Sep 2016 17:21:08 +0100
Subject: [Microbit-Python] PyCon UK proposal - Enriching Maths and
 Physics teaching with Micro:bit motion sensors
In-Reply-To: <CABQC_xo_JHMQa+9Mk=YYPKsoD3TkD=XPHPzrv_nAJL37RW_A+w@mail.gmail.com>
References: <57706E55.5090605@stevesimmons.com>
 <5770716A.5090906@stevesimmons.com>
 <CABQC_xpnSQ6xrAqBPOQNjBjPL0LLpr_L7XgjeumLnUV_H6TvBw@mail.gmail.com>
 <30A901C2-9FB4-4705-93B1-4D7A160251C6@gmail.com>
 <CABQC_xo_JHMQa+9Mk=YYPKsoD3TkD=XPHPzrv_nAJL37RW_A+w@mail.gmail.com>
Message-ID: <1E9514D8-5478-4879-8DB5-E57AF1437231@stevesimmons.com>

Rather than a tutorial, I have a 30 minute presentation slot on Motion Sensors and Data Fusion on the Open Day on Thursday 15 September at 3:30. 

I wrote half the presentation over the weekend, including code for two microbits to do remote wireless sensor logging, with sample analysis in a Jupyter notebook. 

I'll finish it off this coming weekend with another couple of examples. 

Then if anyone is interested pushing it further, we could meet up in Cardiff and sketch out a plan. 

My big surprise from microbit coding this weekend is how much fun it is, with really very simple code. Absolutely brilliant! 

My in-progress code and presentation is on github at:
https://github.com/stevesimmons/pyconuk-motion-sensor-data-fusion


Stephen



On 5 September 2016 15:29:59 BST, Leona So <leonaso43 at googlemail.com> wrote:
>I won't be going either because of work commitment, one of my
>colleagues
>will though. But, I am still ready and can't wait to get it tested if
>this
>is going ahead!
>
>On Mon, Sep 5, 2016 at 3:26 PM, Nigel Kendrick
><nigel.kendrick at gmail.com>
>wrote:
>
>> Ditto. I'm still ready, willing and able to check out code and work
>on any
>> material etc., but I'm not now going to attend PyCon due to a clash
>with a
>> work commitment.
>>
>> Nigel Kendrick
>>
>>
>> On 5 September 2016 15:09:52 BST, Leona So <leonaso43 at googlemail.com>
>> wrote:
>>>
>>> Hi Stephen,
>>>
>>> Do you have any updated information regarding this?
>>>
>>> Thanks.
>>>
>>> Regards,
>>>
>>>
>>> Leona
>>>
>>> On Mon, Jun 27, 2016 at 1:20 AM, Stephen Simmons
><mail at stevesimmons.com>
>>> wrote:
>>>
>>>> Hi everyone,
>>>>
>>>> I mentioned on this list a couple of weeks ago an idea to run a
>session
>>>> at PyCon UK Teachers' Day on using the Micro:bit's motion sensors.
>>>>
>>>> A number of people - including Leona, Steve and Nigel (Cc-ed) -
>replied
>>>> wanting to get involved.
>>>>
>>>> Encouraged by this, I have just submitted the outline below. It
>>>> hopefully gives the conference organisers enough to say "Yup, go
>for it"
>>>> while leaving a lot of space for us to decide exactly what to
>present.
>>>>
>>>> I am on holiday next week so will finally have time to email
>everyone
>>>> who has expressed interest about working together sorting out the
>details.
>>>>
>>>> Thanks
>>>> Stephen
>>>>
>>>>
>>>>
>>>> *Title: *
>>>> Enriching Maths and Physics teaching with Micro:bit motion sensors
>>>>
>>>> *What are you proposing? *
>>>> A workshop for Teachers' Day
>>>> (duration/number of attendees are flexible. TBD with PyCon UK
>organisers)
>>>>
>>>> *Abstract: *
>>>> The BBC Micro:bit has powerful accelerometer and compass motion
>sensors.
>>>> While they are fun for kids to play with, we show how they can also
>be used
>>>> in class to bring some key Maths and Physics principles to life.
>>>>
>>>> This workshop session is intended for teachers who want to learn
>about
>>>> using  micro:bit in their classes. No specific knowledge of
>micro:bit or
>>>> Python programming is assumed. People who already know Python and
>micro:bit
>>>> are also welcome to join in, especially if you can help the
>teachers get
>>>> started.
>>>>
>>>> Teachers and helpers are asked to send their ideas for teaching
>examples
>>>> to me at mail at stevesimmons.com well before the Teachers' Day. We
>will
>>>> write up several examples to present in full, with some others as
>group
>>>> exercises.
>>>>
>>>> *Why will people be interested: *
>>>> This is a practical session to help teachers integrate micro:bit
>into
>>>> their classes. It can accommodate all levels of experience and
>teachers and
>>>> non-teachers are welcome.
>>>>
>>>> *What level of audience: *
>>>> Novice
>>>>
>>>> *More information about you (public): *
>>>> Stephen has been a Python programmer since 2000. He trained as a
>>>> mathematician and electrical engineer, with a PhD in signal
>processing for
>>>> radar target detection. After a period as a management consultant,
>he
>>>> worked for credit card companies in Australia and The Netherlands,
>running
>>>> areas like marketing, risk, operations and strategy. Six years ago,
>he
>>>> moved back into technology and joined JPMorgan in London, where his
>team
>>>> uses Python to build trading, risk management and analytics
>systems.
>>>>
>>>> *More information about you (private): *
>>>> I presented the tutorial "Pandas from the Inside" at PyData London
>on 6
>>>> May 2016. I have also submitted a separate proposal on motion
>sensors data
>>>> fusion for the main PyCon UK conference.
>>>>
>>>>
>>>>
>>>
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From jeff.wouters at hotmail.com  Thu Sep  8 03:24:34 2016
From: jeff.wouters at hotmail.com (Jeff Wouters)
Date: Thu, 8 Sep 2016 08:24:34 +0100
Subject: [Microbit-Python] No access to the web site
Message-ID: <DUB405-EAS53AB7C1334B3277B56F04793FB0@phx.gbl>

I registered and received the message confirming my password but I can not get into the python website because I don't know what username to use as I was never asked to specify it.
Can someone get me on the right track please?

Jeff

From Jeff's ipad

From ntoll at ntoll.org  Thu Sep  8 03:29:27 2016
From: ntoll at ntoll.org (Nicholas H.Tollervey)
Date: Thu, 8 Sep 2016 08:29:27 +0100
Subject: [Microbit-Python] No access to the web site
In-Reply-To: <DUB405-EAS53AB7C1334B3277B56F04793FB0@phx.gbl>
References: <DUB405-EAS53AB7C1334B3277B56F04793FB0@phx.gbl>
Message-ID: <6eacd4db-7518-96ed-9993-7f74ae088caa@ntoll.org>

On 08/09/16 08:24, Jeff Wouters wrote:
> I registered and received the message confirming my password but I can not get into the python website because I don't know what username to use as I was never asked to specify it.
> Can someone get me on the right track please?
> 
> Jeff
> 
> From Jeff's ipad
> _______________________________________________
> Microbit mailing list
> Microbit at python.org
> https://mail.python.org/mailman/listinfo/microbit
> 

Hi Jeff,

Apologies if this all sounds obvious, but I want to make sure I
understand what the problem is if I am to help you.

What exactly are you trying to achieve? You don't mention which website
is causing you problems (please supply the URL - there are lots of
Python websites).

Thanks for your patience,

N.

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From jeff.wouters at hotmail.com  Thu Sep  8 03:55:56 2016
From: jeff.wouters at hotmail.com (Jeff Wouters)
Date: Thu, 8 Sep 2016 08:55:56 +0100
Subject: [Microbit-Python] No access to the web site
In-Reply-To: <6eacd4db-7518-96ed-9993-7f74ae088caa@ntoll.org>
References: <DUB405-EAS53AB7C1334B3277B56F04793FB0@phx.gbl>
 <6eacd4db-7518-96ed-9993-7f74ae088caa@ntoll.org>
Message-ID: <DUB405-EAS1993A05E1AA0935C990829393FB0@phx.gbl>

I was trying to sign in to python.org.
Now I see that there is a python.uk. Do I have to register there too?
Sorry, I am new and rather confused.

Jeff

From Jeff's ipad

> On 8 Sep 2016, at 08:29, Nicholas H.Tollervey <ntoll at ntoll.org> wrote:
> 
>> On 08/09/16 08:24, Jeff Wouters wrote:
>> I registered and received the message confirming my password but I can not get into the python website because I don't know what username to use as I was never asked to specify it.
>> Can someone get me on the right track please?
>> 
>> Jeff
>> 
>> From Jeff's ipad
>> _______________________________________________
>> Microbit mailing list
>> Microbit at python.org
>> https://mail.python.org/mailman/listinfo/microbit
> 
> Hi Jeff,
> 
> Apologies if this all sounds obvious, but I want to make sure I
> understand what the problem is if I am to help you.
> 
> What exactly are you trying to achieve? You don't mention which website
> is causing you problems (please supply the URL - there are lots of
> Python websites).
> 
> Thanks for your patience,
> 
> N.
> 
> _______________________________________________
> Microbit mailing list
> Microbit at python.org
> https://mail.python.org/mailman/listinfo/microbit

From ntoll at ntoll.org  Thu Sep  8 04:00:24 2016
From: ntoll at ntoll.org (Nicholas H.Tollervey)
Date: Thu, 8 Sep 2016 09:00:24 +0100
Subject: [Microbit-Python] No access to the web site
In-Reply-To: <DUB405-EAS1993A05E1AA0935C990829393FB0@phx.gbl>
References: <DUB405-EAS53AB7C1334B3277B56F04793FB0@phx.gbl>
 <6eacd4db-7518-96ed-9993-7f74ae088caa@ntoll.org>
 <DUB405-EAS1993A05E1AA0935C990829393FB0@phx.gbl>
Message-ID: <2145df1f-16ab-8df4-0106-31797c1c88d2@ntoll.org>

Hi Jeff,

Absolutely no problem at all.

Can you please tell me what you're trying to achieve? For example (and
given the context of this mailing list), are you a teacher looking for
Python related micro:bit resources? Perhaps you're a student looking for
projects? Maybe your an educational administrator wanting to get in
touch with the Python community?

Let me know what you're trying to do and I'll point you in the right
direction. :-)

All the best,

Nicholas.

On 08/09/16 08:55, Jeff Wouters wrote:
> I was trying to sign in to python.org.
> Now I see that there is a python.uk. Do I have to register there too?
> Sorry, I am new and rather confused.
> 
> Jeff
> 
> From Jeff's ipad
> 
>> On 8 Sep 2016, at 08:29, Nicholas H.Tollervey <ntoll at ntoll.org> wrote:
>>
>>> On 08/09/16 08:24, Jeff Wouters wrote:
>>> I registered and received the message confirming my password but I can not get into the python website because I don't know what username to use as I was never asked to specify it.
>>> Can someone get me on the right track please?
>>>
>>> Jeff
>>>
>>> From Jeff's ipad
>>> _______________________________________________
>>> Microbit mailing list
>>> Microbit at python.org
>>> https://mail.python.org/mailman/listinfo/microbit
>>
>> Hi Jeff,
>>
>> Apologies if this all sounds obvious, but I want to make sure I
>> understand what the problem is if I am to help you.
>>
>> What exactly are you trying to achieve? You don't mention which website
>> is causing you problems (please supply the URL - there are lots of
>> Python websites).
>>
>> Thanks for your patience,
>>
>> N.
>>
>> _______________________________________________
>> Microbit mailing list
>> Microbit at python.org
>> https://mail.python.org/mailman/listinfo/microbit
> _______________________________________________
> Microbit mailing list
> Microbit at python.org
> https://mail.python.org/mailman/listinfo/microbit
> 


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From jeff.wouters at hotmail.com  Thu Sep  8 04:22:31 2016
From: jeff.wouters at hotmail.com (Jeff Wouters)
Date: Thu, 8 Sep 2016 09:22:31 +0100
Subject: [Microbit-Python] No access to the web site
In-Reply-To: <2145df1f-16ab-8df4-0106-31797c1c88d2@ntoll.org>
References: <DUB405-EAS53AB7C1334B3277B56F04793FB0@phx.gbl>
 <6eacd4db-7518-96ed-9993-7f74ae088caa@ntoll.org>
 <DUB405-EAS1993A05E1AA0935C990829393FB0@phx.gbl>
 <2145df1f-16ab-8df4-0106-31797c1c88d2@ntoll.org>
Message-ID: <DUB405-EAS5961B4F06C69A3440118D393FB0@phx.gbl>

Sorry, Nicholas, I am just a retired engineer who came along the BBC Micro route along the turtle and the buggy, got interested in Arduino and fascinated by this new initiative.
I have quite a collection of Fischertechnik including their new Robo TXT, after I went past Economatics Smart Box.
The new capabilities are amazing and I want to learn it and be able to deal it with my grand children. I never used Bluetooth to be able to control models.
At 71 you don't want to be left behind!

Thanks for your attention and advice.

Jeff

From Jeff's ipad

> On 8 Sep 2016, at 09:00, Nicholas H.Tollervey <ntoll at ntoll.org> wrote:
> 
> Hi Jeff,
> 
> Absolutely no problem at all.
> 
> Can you please tell me what you're trying to achieve? For example (and
> given the context of this mailing list), are you a teacher looking for
> Python related micro:bit resources? Perhaps you're a student looking for
> projects? Maybe your an educational administrator wanting to get in
> touch with the Python community?
> 
> Let me know what you're trying to do and I'll point you in the right
> direction. :-)
> 
> All the best,
> 
> Nicholas.
> 
>> On 08/09/16 08:55, Jeff Wouters wrote:
>> I was trying to sign in to python.org.
>> Now I see that there is a python.uk. Do I have to register there too?
>> Sorry, I am new and rather confused.
>> 
>> Jeff
>> 
>> From Jeff's ipad
>> 
>>>> On 8 Sep 2016, at 08:29, Nicholas H.Tollervey <ntoll at ntoll.org> wrote:
>>>> 
>>>> On 08/09/16 08:24, Jeff Wouters wrote:
>>>> I registered and received the message confirming my password but I can not get into the python website because I don't know what username to use as I was never asked to specify it.
>>>> Can someone get me on the right track please?
>>>> 
>>>> Jeff
>>>> 
>>>> From Jeff's ipad
>>>> _______________________________________________
>>>> Microbit mailing list
>>>> Microbit at python.org
>>>> https://mail.python.org/mailman/listinfo/microbit
>>> 
>>> Hi Jeff,
>>> 
>>> Apologies if this all sounds obvious, but I want to make sure I
>>> understand what the problem is if I am to help you.
>>> 
>>> What exactly are you trying to achieve? You don't mention which website
>>> is causing you problems (please supply the URL - there are lots of
>>> Python websites).
>>> 
>>> Thanks for your patience,
>>> 
>>> N.
>>> 
>>> _______________________________________________
>>> Microbit mailing list
>>> Microbit at python.org
>>> https://mail.python.org/mailman/listinfo/microbit
>> _______________________________________________
>> Microbit mailing list
>> Microbit at python.org
>> https://mail.python.org/mailman/listinfo/microbit
>> 
> 
> 
> _______________________________________________
> Microbit mailing list
> Microbit at python.org
> https://mail.python.org/mailman/listinfo/microbit

From ntoll at ntoll.org  Thu Sep  8 04:31:21 2016
From: ntoll at ntoll.org (Nicholas H.Tollervey)
Date: Thu, 8 Sep 2016 09:31:21 +0100
Subject: [Microbit-Python] No access to the web site
In-Reply-To: <DUB405-EAS5961B4F06C69A3440118D393FB0@phx.gbl>
References: <DUB405-EAS53AB7C1334B3277B56F04793FB0@phx.gbl>
 <6eacd4db-7518-96ed-9993-7f74ae088caa@ntoll.org>
 <DUB405-EAS1993A05E1AA0935C990829393FB0@phx.gbl>
 <2145df1f-16ab-8df4-0106-31797c1c88d2@ntoll.org>
 <DUB405-EAS5961B4F06C69A3440118D393FB0@phx.gbl>
Message-ID: <472cb0db-920c-c319-71cc-6d0f4684f753@ntoll.org>

Hi Jeff,

Aha! I believe you're among friends here ~ we're all young at heart no
matter what our alleged "real" age is supposed to be. ;-)

You've obviously signed up to the mailing list. Please feel free to ask
questions. Don't worry "is my question stupid?", we'd love to know what
the bumps and sticking points are for MicroPython on the micro:bit.

In terms of stuff to read, check out the tutorials in our documentation
found here:

https://microbit-micropython.readthedocs.io/en/latest/

This should give you a good idea of what the device can do and how to
make it do interesting stuff with grandchildren. All feedback is most
welcome!

There's also all the stuff on the official BBC website at microbit.co.uk
(although that's not Python specific).

Happy to help and best of luck!

N.

On 08/09/16 09:22, Jeff Wouters wrote:
> Sorry, Nicholas, I am just a retired engineer who came along the BBC
> Micro route along the turtle and the buggy, got interested in Arduino
> and fascinated by this new initiative. I have quite a collection of
> Fischertechnik including their new Robo TXT, after I went past
> Economatics Smart Box. The new capabilities are amazing and I want to
> learn it and be able to deal it with my grand children. I never used
> Bluetooth to be able to control models. At 71 you don't want to be
> left behind!
> 
> Thanks for your attention and advice.
> 
> Jeff
> 
> From Jeff's ipad
> 
>> On 8 Sep 2016, at 09:00, Nicholas H.Tollervey <ntoll at ntoll.org>
>> wrote:
>> 
>> Hi Jeff,
>> 
>> Absolutely no problem at all.
>> 
>> Can you please tell me what you're trying to achieve? For example
>> (and given the context of this mailing list), are you a teacher
>> looking for Python related micro:bit resources? Perhaps you're a
>> student looking for projects? Maybe your an educational
>> administrator wanting to get in touch with the Python community?
>> 
>> Let me know what you're trying to do and I'll point you in the
>> right direction. :-)
>> 
>> All the best,
>> 
>> Nicholas.
>> 
>>> On 08/09/16 08:55, Jeff Wouters wrote: I was trying to sign in to
>>> python.org. Now I see that there is a python.uk. Do I have to
>>> register there too? Sorry, I am new and rather confused.
>>> 
>>> Jeff
>>> 
>>> From Jeff's ipad
>>> 
>>>>> On 8 Sep 2016, at 08:29, Nicholas H.Tollervey
>>>>> <ntoll at ntoll.org> wrote:
>>>>> 
>>>>> On 08/09/16 08:24, Jeff Wouters wrote: I registered and
>>>>> received the message confirming my password but I can not get
>>>>> into the python website because I don't know what username to
>>>>> use as I was never asked to specify it. Can someone get me on
>>>>> the right track please?
>>>>> 
>>>>> Jeff
>>>>> 
>>>>> From Jeff's ipad 
>>>>> _______________________________________________ Microbit
>>>>> mailing list Microbit at python.org 
>>>>> https://mail.python.org/mailman/listinfo/microbit
>>>> 
>>>> Hi Jeff,
>>>> 
>>>> Apologies if this all sounds obvious, but I want to make sure
>>>> I understand what the problem is if I am to help you.
>>>> 
>>>> What exactly are you trying to achieve? You don't mention which
>>>> website is causing you problems (please supply the URL - there
>>>> are lots of Python websites).
>>>> 
>>>> Thanks for your patience,
>>>> 
>>>> N.
>>>> 
>>>> _______________________________________________ Microbit
>>>> mailing list Microbit at python.org 
>>>> https://mail.python.org/mailman/listinfo/microbit
>>> _______________________________________________ Microbit mailing
>>> list Microbit at python.org 
>>> https://mail.python.org/mailman/listinfo/microbit
>>> 
>> 
>> 
>> _______________________________________________ Microbit mailing
>> list Microbit at python.org 
>> https://mail.python.org/mailman/listinfo/microbit
> _______________________________________________ Microbit mailing
> list Microbit at python.org 
> https://mail.python.org/mailman/listinfo/microbit
> 


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From mail at timgolden.me.uk  Thu Sep  8 04:32:32 2016
From: mail at timgolden.me.uk (Tim Golden)
Date: Thu, 8 Sep 2016 09:32:32 +0100
Subject: [Microbit-Python] No access to the web site
In-Reply-To: <DUB405-EAS5961B4F06C69A3440118D393FB0@phx.gbl>
References: <DUB405-EAS53AB7C1334B3277B56F04793FB0@phx.gbl>
 <6eacd4db-7518-96ed-9993-7f74ae088caa@ntoll.org>
 <DUB405-EAS1993A05E1AA0935C990829393FB0@phx.gbl>
 <2145df1f-16ab-8df4-0106-31797c1c88d2@ntoll.org>
 <DUB405-EAS5961B4F06C69A3440118D393FB0@phx.gbl>
Message-ID: <a5d87aff-f7f5-b95d-0a38-32fc491fdb53@timgolden.me.uk>

Jeff -- you're welcome to access everything on python.org without
logging in to the site. (There was presumably some notion of having
additional resources or social connections for logged-on users, but
nothing's happened yet).

If you'd like to sign in nevertheless, drop a line to
webmaster at python.org and describe what's working and what's not and
we'll see if we can help you out.

If you just want to use Python and the microbit, then just have at it!

TJG

On 08/09/2016 09:22, Jeff Wouters wrote:
> Sorry, Nicholas, I am just a retired engineer who came along the BBC
> Micro route along the turtle and the buggy, got interested in Arduino
> and fascinated by this new initiative. I have quite a collection of
> Fischertechnik including their new Robo TXT, after I went past
> Economatics Smart Box. The new capabilities are amazing and I want to
> learn it and be able to deal it with my grand children. I never used
> Bluetooth to be able to control models. At 71 you don't want to be
> left behind!
> 
> Thanks for your attention and advice.
> 
> Jeff
> 
> From Jeff's ipad
> 
>> On 8 Sep 2016, at 09:00, Nicholas H.Tollervey <ntoll at ntoll.org>
>> wrote:
>> 
>> Hi Jeff,
>> 
>> Absolutely no problem at all.
>> 
>> Can you please tell me what you're trying to achieve? For example
>> (and given the context of this mailing list), are you a teacher
>> looking for Python related micro:bit resources? Perhaps you're a
>> student looking for projects? Maybe your an educational
>> administrator wanting to get in touch with the Python community?
>> 
>> Let me know what you're trying to do and I'll point you in the
>> right direction. :-)
>> 
>> All the best,
>> 
>> Nicholas.
>> 
>>> On 08/09/16 08:55, Jeff Wouters wrote: I was trying to sign in to
>>> python.org. Now I see that there is a python.uk. Do I have to
>>> register there too? Sorry, I am new and rather confused.
>>> 
>>> Jeff
>>> 
>>> From Jeff's ipad
>>> 
>>>>> On 8 Sep 2016, at 08:29, Nicholas H.Tollervey
>>>>> <ntoll at ntoll.org> wrote:
>>>>> 
>>>>> On 08/09/16 08:24, Jeff Wouters wrote: I registered and
>>>>> received the message confirming my password but I can not get
>>>>> into the python website because I don't know what username to
>>>>> use as I was never asked to specify it. Can someone get me on
>>>>> the right track please?
>>>>> 
>>>>> Jeff
>>>>> 
>>>>> From Jeff's ipad 
>>>>> _______________________________________________ Microbit
>>>>> mailing list Microbit at python.org 
>>>>> https://mail.python.org/mailman/listinfo/microbit
>>>> 
>>>> Hi Jeff,
>>>> 
>>>> Apologies if this all sounds obvious, but I want to make sure
>>>> I understand what the problem is if I am to help you.
>>>> 
>>>> What exactly are you trying to achieve? You don't mention which
>>>> website is causing you problems (please supply the URL - there
>>>> are lots of Python websites).
>>>> 
>>>> Thanks for your patience,
>>>> 
>>>> N.
>>>> 
>>>> _______________________________________________ Microbit
>>>> mailing list Microbit at python.org 
>>>> https://mail.python.org/mailman/listinfo/microbit
>>> _______________________________________________ Microbit mailing
>>> list Microbit at python.org 
>>> https://mail.python.org/mailman/listinfo/microbit
>>> 
>> 
>> 
>> _______________________________________________ Microbit mailing
>> list Microbit at python.org 
>> https://mail.python.org/mailman/listinfo/microbit
> _______________________________________________ Microbit mailing
> list Microbit at python.org 
> https://mail.python.org/mailman/listinfo/microbit
> 


From andrewferguson500 at gmail.com  Fri Sep  9 10:19:15 2016
From: andrewferguson500 at gmail.com (Andrew Ferguson)
Date: Fri, 9 Sep 2016 15:19:15 +0100
Subject: [Microbit-Python] Microbit I/O Questions
Message-ID: <CAFvb3659TVe4yqyZ3_4McZo=z46aU4KNuqtuysVRQih4sbFYdg@mail.gmail.com>

During a project I have come across a few questions related to the I/O pins
of the microbit. I could probably try these myself - but I thought I would
ask here first before I potentially break my microbit.

Unlike Arduino, there is no way to specify whether a pin is an input or and
output with the microbit. Therefore I am curious to what would happen in
the following cases:

A lamp is connected from the 3.3v pin to an I/O pin, and no code is
flashed. Would the lamp light?

Alternatively, what would happen if a value was read from the pin connected
to the lamp?

And what would happen if you set an I/O pin to output 3.3v and then tried
to read from it? Would you get a value? Would the pin become an input and
stop outputting 3.3v?
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From jj at gioorgi.com  Fri Sep  9 11:54:42 2016
From: jj at gioorgi.com (Giovanni Giorgi)
Date: Fri, 09 Sep 2016 17:54:42 +0200
Subject: [Microbit-Python] Building a microbit python extension (SID
 emulator)
Message-ID: <865b20760414c42ec7e261a78c21f498@webmail.webfaction.com>

Hi all,
 my name is Giovanni Giorgi, I am born in the 1974 and I am a very
excited about micropython. 

I am an Arduino fan, and I have done small extension to this SID
emulator: 

https://github.com/daitangio/sid-arduino-lib 

I am very excited by micropython: I am evaluting to write a small C
extension to reimplement a subset of sid-arduino-lib. 

There is a guide on PWM micropython hacking and/or on micropython module
extension? 

Even directing to a *.cpp file is okey (I am not scared by C++ by the
way :)

---
Gio's Blog http://gioorgi.com 
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From hot.toast at yahoo.co.uk  Sun Sep 11 03:33:08 2016
From: hot.toast at yahoo.co.uk (hot.toast)
Date: Sun, 11 Sep 2016 08:33:08 +0100
Subject: [Microbit-Python] importing modules using uflash
Message-ID: <e6f59ea0-04be-f497-b1e1-5911ebcc6353@yahoo.co.uk>

I'm trying to test the micropython sheduler module "usched.py" on the 
microbit.

The script I am using to test it "roundrobin.py" contains the line "from 
usched import Sched"

If I flash the microbit using the command uflash roundrobin.py, I get an 
ImportError stating no module named 'usched'

How do I get uflash to recognise that it needs to incorporate a module 
in the same path as the script?





From ben at benmr.com  Sun Sep 11 04:48:59 2016
From: ben at benmr.com (Ben Mustill-Rose)
Date: Sun, 11 Sep 2016 09:48:59 +0100
Subject: [Microbit-Python] importing modules using uflash
In-Reply-To: <e6f59ea0-04be-f497-b1e1-5911ebcc6353@yahoo.co.uk>
References: <e6f59ea0-04be-f497-b1e1-5911ebcc6353@yahoo.co.uk>
Message-ID: <CAC7gt1JSxF0wfjR=r-W0rqfAW=cX0vDLUgqvJSWE0AFTWmGWpg@mail.gmail.com>

Hi,

If you're getting import errors it unfortunately means that the module
hasn't been included in the build of MicroPython for the micro:bit.

To expand on this a little, the way that uflash works is:

A vanilla copy of the runtime - E.G. with no scripts added is included
in the tool (from memory this starts at around line 314).
Unless otherwise specified via its parameters, when run, uflash will
create a hex representation of roundrobin.py and concatenate said
representation with the vanilla runtime.
The tool itself has no understanding of modules per say - all it does
is joins files together.

If you're interested in how it works I highly recommend having a look
at the code as it?s very readable.

Sorry to be the bearer of bad news - hopefully someone else may have
an idea as to how your problem can be solved.

Cheers,
Ben.


On 9/11/16, hot.toast via Microbit <microbit at python.org> wrote:
> I'm trying to test the micropython sheduler module "usched.py" on the
> microbit.
>
> The script I am using to test it "roundrobin.py" contains the line "from
> usched import Sched"
>
> If I flash the microbit using the command uflash roundrobin.py, I get an
> ImportError stating no module named 'usched'
>
> How do I get uflash to recognise that it needs to incorporate a module
> in the same path as the script?
>
>
>
>
> _______________________________________________
> Microbit mailing list
> Microbit at python.org
> https://mail.python.org/mailman/listinfo/microbit
>

From microbit at sheep.art.pl  Sun Sep 11 06:27:43 2016
From: microbit at sheep.art.pl (Radomir Dopieralski)
Date: Sun, 11 Sep 2016 12:27:43 +0200
Subject: [Microbit-Python] importing modules using uflash
In-Reply-To: <e6f59ea0-04be-f497-b1e1-5911ebcc6353@yahoo.co.uk>
References: <e6f59ea0-04be-f497-b1e1-5911ebcc6353@yahoo.co.uk>
Message-ID: <20160911122743.2ec55d15@ghostwheel>


You can use the mu editor to upload all the additional modules to
the internal filesystem of the Micro:bit, then it should be possible
to import them.

On Sun, 11 Sep 2016 08:33:08 +0100
"hot.toast via Microbit" <microbit at python.org> wrote:

> I'm trying to test the micropython sheduler module "usched.py" on the 
> microbit.
> 
> The script I am using to test it "roundrobin.py" contains the line
> "from usched import Sched"
> 
> If I flash the microbit using the command uflash roundrobin.py, I get
> an ImportError stating no module named 'usched'
> 
> How do I get uflash to recognise that it needs to incorporate a
> module in the same path as the script?


-- 
Radomir Dopieralski

From david at thinkingbinaries.com  Sun Sep 11 07:19:27 2016
From: david at thinkingbinaries.com (David Whale)
Date: Sun, 11 Sep 2016 12:19:27 +0100
Subject: [Microbit-Python] importing modules using uflash
In-Reply-To: <20160911122743.2ec55d15@ghostwheel>
References: <e6f59ea0-04be-f497-b1e1-5911ebcc6353@yahoo.co.uk>
 <20160911122743.2ec55d15@ghostwheel>
Message-ID: <CABeH_SvMA820NFaZ_7V0YZwji37sO+ZO=RXsOw-E+YzHTvS_5A@mail.gmail.com>

Make sure you use the most up to date version of Mu though to do this, as
it was a feature that was added reasonably recently. The version of Mu in
the Raspberry Pi repo's is still out of date at the moment, and might not
have this feature included yet.

>
>
>
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From hot.toast at yahoo.co.uk  Sun Sep 11 07:47:20 2016
From: hot.toast at yahoo.co.uk (hot.toast)
Date: Sun, 11 Sep 2016 12:47:20 +0100
Subject: [Microbit-Python] importing modules using uflash
In-Reply-To: <CABeH_SvMA820NFaZ_7V0YZwji37sO+ZO=RXsOw-E+YzHTvS_5A@mail.gmail.com>
References: <e6f59ea0-04be-f497-b1e1-5911ebcc6353@yahoo.co.uk>
 <20160911122743.2ec55d15@ghostwheel>
 <CABeH_SvMA820NFaZ_7V0YZwji37sO+ZO=RXsOw-E+YzHTvS_5A@mail.gmail.com>
Message-ID: <61bc2f45-18fa-e560-ab8e-0f0d334769e3@yahoo.co.uk>

So as i understand it,

1. uFlash is limited to python scripts that contain all the local 
function and class definitions. The only imports that are allowed are 
those from the microbit version of micropython.

2. If I want to import  "mymodule.py" from a file on my local hard 
drive, I will have to use the latest version of the mu editor...






On 11/09/16 12:19, David Whale wrote:
> Make sure you use the most up to date version of Mu though to do this, as
> it was a feature that was added reasonably recently. The version of Mu in
> the Raspberry Pi repo's is still out of date at the moment, and might not
> have this feature included yet.
>
>>
>>
>
>
> _______________________________________________
> Microbit mailing list
> Microbit at python.org
> https://mail.python.org/mailman/listinfo/microbit


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From microbit at sheep.art.pl  Sun Sep 11 08:00:29 2016
From: microbit at sheep.art.pl (Radomir Dopieralski)
Date: Sun, 11 Sep 2016 14:00:29 +0200
Subject: [Microbit-Python] importing modules using uflash
In-Reply-To: <61bc2f45-18fa-e560-ab8e-0f0d334769e3@yahoo.co.uk>
References: <e6f59ea0-04be-f497-b1e1-5911ebcc6353@yahoo.co.uk>
 <20160911122743.2ec55d15@ghostwheel>
 <CABeH_SvMA820NFaZ_7V0YZwji37sO+ZO=RXsOw-E+YzHTvS_5A@mail.gmail.com>
 <61bc2f45-18fa-e560-ab8e-0f0d334769e3@yahoo.co.uk>
Message-ID: <20160911140029.4531b408@ghostwheel>


Not quite.

It doesn't matter how you upload your main script -- you can use uFlash
or Mu or the online editor, or even prepare the hex file yourself by
hand. The thing is, that the hex file can contain only one python file
in it.

However, there is also internal filesystem on the micro:bit, where you
can put additional files to be imported by your main script. The most
convenient way to access that filesystem and upload your files is by
using the latest version of the Mu editor. Of course, you could as well
just write a program that creates the file and writes its contents, but
that is a little roundabout way of doing it.

I hope this helps.


On Sun, 11 Sep 2016 12:47:20 +0100
"hot.toast via Microbit" <microbit at python.org> wrote:

> So as i understand it,
> 
> 1. uFlash is limited to python scripts that contain all the local 
> function and class definitions. The only imports that are allowed are 
> those from the microbit version of micropython.
> 
> 2. If I want to import  "mymodule.py" from a file on my local hard 
> drive, I will have to use the latest version of the mu editor...
> 
> On 11/09/16 12:19, David Whale wrote:
> > Make sure you use the most up to date version of Mu though to do
> > this, as it was a feature that was added reasonably recently. The
> > version of Mu in the Raspberry Pi repo's is still out of date at
> > the moment, and might not have this feature included yet.


-- 
Radomir Dopieralski

-- 
Radomir Dopieralski

From damien.p.george at gmail.com  Sun Sep 11 23:24:09 2016
From: damien.p.george at gmail.com (Damien George)
Date: Mon, 12 Sep 2016 13:24:09 +1000
Subject: [Microbit-Python] Microbit I/O Questions
In-Reply-To: <CAFvb3659TVe4yqyZ3_4McZo=z46aU4KNuqtuysVRQih4sbFYdg@mail.gmail.com>
References: <CAFvb3659TVe4yqyZ3_4McZo=z46aU4KNuqtuysVRQih4sbFYdg@mail.gmail.com>
Message-ID: <CANw+MzmvCeQPCCzD7_AoL-tD2q=GpCBXr9F6hVRqJY=LH8p0PA@mail.gmail.com>

The microbit GPIO functionality was designed to be easy for children
to use.  So it automatically configures itself to input or output
depending on the call.  Eg pin.write_digital will make it an output,
and pin.read_digital will then make it an input.

Upon power up the pins are in a "disconnected" state, basically in input.

On 10 September 2016 at 00:19, Andrew Ferguson
<andrewferguson500 at gmail.com> wrote:
> During a project I have come across a few questions related to the I/O pins
> of the microbit. I could probably try these myself - but I thought I would
> ask here first before I potentially break my microbit.
>
> Unlike Arduino, there is no way to specify whether a pin is an input or and
> output with the microbit. Therefore I am curious to what would happen in the
> following cases:
>
> A lamp is connected from the 3.3v pin to an I/O pin, and no code is flashed.
> Would the lamp light?
>
> Alternatively, what would happen if a value was read from the pin connected
> to the lamp?
>
> And what would happen if you set an I/O pin to output 3.3v and then tried to
> read from it? Would you get a value? Would the pin become an input and stop
> outputting 3.3v?
>
> _______________________________________________
> Microbit mailing list
> Microbit at python.org
> https://mail.python.org/mailman/listinfo/microbit
>

From damien.p.george at gmail.com  Sun Sep 11 23:26:16 2016
From: damien.p.george at gmail.com (Damien George)
Date: Mon, 12 Sep 2016 13:26:16 +1000
Subject: [Microbit-Python] Building a microbit python extension (SID
 emulator)
In-Reply-To: <865b20760414c42ec7e261a78c21f498@webmail.webfaction.com>
References: <865b20760414c42ec7e261a78c21f498@webmail.webfaction.com>
Message-ID: <CANw+Mzkf6F22h2xTh6RtX1bAun6WLOesMD_=5VTfj_gCWB5N7g@mail.gmail.com>

If you want to write C (or C++) extensions to micropython (either for
the microbit or other boards), then it's best to consult the forum:
http://forum.micropython.org/

There is now a dedicated microbit section on this forum, as well as
sections discussion general development of and with MicroPython.

On 10 September 2016 at 01:54, Giovanni Giorgi <jj at gioorgi.com> wrote:
> Hi all,
>  my name is Giovanni Giorgi, I am born in the 1974 and I am a very excited
> about micropython.
>
> I am an Arduino fan, and I have done small extension to this SID emulator:
>
> https://github.com/daitangio/sid-arduino-lib
>
> I am very excited by micropython: I am evaluting to write a small C
> extension to reimplement a subset of sid-arduino-lib.
>
> There is a guide on PWM micropython hacking and/or on micropython module
> extension?
>
> Even directing to a *.cpp file is okey (I am not scared by C++ by the way :)
>
> ---
> Gio's Blog http://gioorgi.com
>
> _______________________________________________
> Microbit mailing list
> Microbit at python.org
> https://mail.python.org/mailman/listinfo/microbit
>

From ntoll at ntoll.org  Mon Sep 12 03:21:12 2016
From: ntoll at ntoll.org (Nicholas H.Tollervey)
Date: Mon, 12 Sep 2016 08:21:12 +0100
Subject: [Microbit-Python] importing modules using uflash
In-Reply-To: <61bc2f45-18fa-e560-ab8e-0f0d334769e3@yahoo.co.uk>
References: <e6f59ea0-04be-f497-b1e1-5911ebcc6353@yahoo.co.uk>
 <20160911122743.2ec55d15@ghostwheel>
 <CABeH_SvMA820NFaZ_7V0YZwji37sO+ZO=RXsOw-E+YzHTvS_5A@mail.gmail.com>
 <61bc2f45-18fa-e560-ab8e-0f0d334769e3@yahoo.co.uk>
Message-ID: <ce9703f6-a79f-91aa-bb28-8a3378918004@ntoll.org>

Hi,

The documentation you seek is here:

https://microbit-micropython.readthedocs.io/en/latest/tutorials/storage.html
(high level overview)

https://microfs.readthedocs.io/en/latest/ (the utility Mu uses to
interact with the filesystem)

Get latest Mu from here:

http://codewith.mu/

See especially this:
https://microbit-micropython.readthedocs.io/en/latest/tutorials/storage.html#mainly-main-py

Hope this helps,

N.



On 11/09/16 12:47, hot.toast via Microbit wrote:
> So as i understand it,
> 
> 1. uFlash is limited to python scripts that contain all the local
> function and class definitions. The only imports that are allowed are
> those from the microbit version of micropython.
> 
> 2. If I want to import  "mymodule.py" from a file on my local hard
> drive, I will have to use the latest version of the mu editor...
> 
> 
> 
> 
> 
> 
> On 11/09/16 12:19, David Whale wrote:
>> Make sure you use the most up to date version of Mu though to do this, as
>> it was a feature that was added reasonably recently. The version of Mu in
>> the Raspberry Pi repo's is still out of date at the moment, and might not
>> have this feature included yet.
>>
>>>
>>>
>>
>>
>> _______________________________________________
>> Microbit mailing list
>> Microbit at python.org
>> https://mail.python.org/mailman/listinfo/microbit
> 
> 
> 
> 
> _______________________________________________
> Microbit mailing list
> Microbit at python.org
> https://mail.python.org/mailman/listinfo/microbit
> 


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From nevil.hunt at hotmail.co.uk  Mon Sep 12 04:53:52 2016
From: nevil.hunt at hotmail.co.uk (Nevil Hunt)
Date: Mon, 12 Sep 2016 08:53:52 +0000
Subject: [Microbit-Python] Adafruit MicroPython Video
Message-ID: <DB5PR08MB0966B1DD00830BEB9B13B6CAC3FF0@DB5PR08MB0966.eurprd08.prod.outlook.com>

Hi,


I've just watched this Adafruit MicroPython Video:-


https://www.youtube.com/watch?v=8btQWSu7DdM


which shows some of the power of MicroPython including (in the last 10 minutes) a demo of MicroPython on the micro:bit! Worth watching!


Is anyone in contact with Tony DiCola or anyone else from Adafruit? I've got some ideas related to the micro:bit which I'd like to discuss with them.



Cheers,


Nevil


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From jj at gioorgi.com  Mon Sep 12 11:50:11 2016
From: jj at gioorgi.com (Giovanni Giorgi)
Date: Mon, 12 Sep 2016 17:50:11 +0200
Subject: [Microbit-Python] Building a microbit python extension (SID
 emulator)
In-Reply-To: <CANw+Mzkf6F22h2xTh6RtX1bAun6WLOesMD_=5VTfj_gCWB5N7g@mail.gmail.com>
References: <865b20760414c42ec7e261a78c21f498@webmail.webfaction.com>
 <CANw+Mzkf6F22h2xTh6RtX1bAun6WLOesMD_=5VTfj_gCWB5N7g@mail.gmail.com>
Message-ID: <39e8f564d99500b52ec516509d5d402a@webmail.webfaction.com>

Thank you George. 

Only a question: suppose I will be able to build an extension for
microbit python. 

Is it right to publish a pull request on github from the source code? 

Is this the right way/right policy of doing it? 

Thank you! 

Il 2016-09-12 05:26 Damien George ha scritto:

> If you want to write C (or C++) extensions to micropython (either for
> the microbit or other boards), then it's best to consult the forum:
> http://forum.micropython.org/
> 
> There is now a dedicated microbit section on this forum, as well as
> sections discussion general development of and with MicroPython.
> 
> On 10 September 2016 at 01:54, Giovanni Giorgi <jj at gioorgi.com> wrote: 
> 
>> Hi all,
>> my name is Giovanni Giorgi, I am born in the 1974 and I am a very excited
>> about micropython.
>> 
>> I am an Arduino fan, and I have done small extension to this SID emulator:
>> 
>> https://github.com/daitangio/sid-arduino-lib
>> 
>> I am very excited by micropython: I am evaluting to write a small C
>> extension to reimplement a subset of sid-arduino-lib.
>> 
>> There is a guide on PWM micropython hacking and/or on micropython module
>> extension?
>> 
>> Even directing to a *.cpp file is okey (I am not scared by C++ by the way :)
>> 
>> ---
>> Gio's Blog http://gioorgi.com
>> 
>> _______________________________________________
>> Microbit mailing list
>> Microbit at python.org
>> https://mail.python.org/mailman/listinfo/microbit
> _______________________________________________
> Microbit mailing list
> Microbit at python.org
> https://mail.python.org/mailman/listinfo/microbit

  
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From damien.p.george at gmail.com  Tue Sep 13 00:47:52 2016
From: damien.p.george at gmail.com (Damien George)
Date: Tue, 13 Sep 2016 14:47:52 +1000
Subject: [Microbit-Python] Building a microbit python extension (SID
 emulator)
In-Reply-To: <39e8f564d99500b52ec516509d5d402a@webmail.webfaction.com>
References: <865b20760414c42ec7e261a78c21f498@webmail.webfaction.com>
 <CANw+Mzkf6F22h2xTh6RtX1bAun6WLOesMD_=5VTfj_gCWB5N7g@mail.gmail.com>
 <39e8f564d99500b52ec516509d5d402a@webmail.webfaction.com>
Message-ID: <CANw+Mzk8nmSxLBnid=maFM=Fg96H9ULcLvnR9UqoN9_1DrDHig@mail.gmail.com>

You are welcome to open a PR but I would say that it won't be merged
because of 2 reasons: 1) likely such an extension is not going to be
used by many people; 2) there is not much room left on the microbit
for new features, and we need to save the space for features that will
be used by the majority of users.

If you do make the extension, I'd suggest just making a README
describing how to install/build the extension so that other people can
do it themselves if they want to try it, and then advertising your
extension on this mailing list or at forum.micropython.org

On 13 September 2016 at 01:50, Giovanni Giorgi <jj at gioorgi.com> wrote:
> Thank you George.
>
> Only a question: suppose I will be able to build an extension for microbit
> python.
>
> Is it right to publish a pull request on github from the source code?
>
> Is this the right way/right policy of doing it?
>
> Thank you!
>
>
>
> Il 2016-09-12 05:26 Damien George ha scritto:
>
> If you want to write C (or C++) extensions to micropython (either for
> the microbit or other boards), then it's best to consult the forum:
> http://forum.micropython.org/
>
> There is now a dedicated microbit section on this forum, as well as
> sections discussion general development of and with MicroPython.
>
> On 10 September 2016 at 01:54, Giovanni Giorgi <jj at gioorgi.com> wrote:
>
> Hi all,
>  my name is Giovanni Giorgi, I am born in the 1974 and I am a very excited
> about micropython.
>
> I am an Arduino fan, and I have done small extension to this SID emulator:
>
> https://github.com/daitangio/sid-arduino-lib
>
> I am very excited by micropython: I am evaluting to write a small C
> extension to reimplement a subset of sid-arduino-lib.
>
> There is a guide on PWM micropython hacking and/or on micropython module
> extension?
>
> Even directing to a *.cpp file is okey (I am not scared by C++ by the way :)
>
> ---
> Gio's Blog http://gioorgi.com
>
> _______________________________________________
> Microbit mailing list
> Microbit at python.org
> https://mail.python.org/mailman/listinfo/microbit
>
> _______________________________________________
> Microbit mailing list
> Microbit at python.org
> https://mail.python.org/mailman/listinfo/microbit
>
>
>
>
> _______________________________________________
> Microbit mailing list
> Microbit at python.org
> https://mail.python.org/mailman/listinfo/microbit
>

From damien.p.george at gmail.com  Tue Sep 13 03:56:43 2016
From: damien.p.george at gmail.com (Damien George)
Date: Tue, 13 Sep 2016 17:56:43 +1000
Subject: [Microbit-Python] Adafruit MicroPython Video
In-Reply-To: <DB5PR08MB0966B1DD00830BEB9B13B6CAC3FF0@DB5PR08MB0966.eurprd08.prod.outlook.com>
References: <DB5PR08MB0966B1DD00830BEB9B13B6CAC3FF0@DB5PR08MB0966.eurprd08.prod.outlook.com>
Message-ID: <CANw+MznsLV92y6vivH8z+9g_AyCaoG9L-a=-XufDcAb5b=FAdA@mail.gmail.com>

What kind of ideas do you have?

On 12 September 2016 at 18:53, Nevil Hunt <nevil.hunt at hotmail.co.uk> wrote:
> Hi,
>
>
> I've just watched this Adafruit MicroPython Video:-
>
>
> https://www.youtube.com/watch?v=8btQWSu7DdM
>
>
> which shows some of the power of MicroPython including (in the last 10
> minutes) a demo of MicroPython on the micro:bit! Worth watching!
>
>
> Is anyone in contact with Tony DiCola or anyone else from Adafruit? I've got
> some ideas related to the micro:bit which I'd like to discuss with them.
>
>
>
> Cheers,
>
>
> Nevil
>
>
>
>
> _______________________________________________
> Microbit mailing list
> Microbit at python.org
> https://mail.python.org/mailman/listinfo/microbit
>

From nevil.hunt at hotmail.co.uk  Tue Sep 13 05:22:00 2016
From: nevil.hunt at hotmail.co.uk (Nevil Hunt)
Date: Tue, 13 Sep 2016 09:22:00 +0000
Subject: [Microbit-Python] Adafruit MicroPython Video
In-Reply-To: <CANw+MznsLV92y6vivH8z+9g_AyCaoG9L-a=-XufDcAb5b=FAdA@mail.gmail.com>
References: <DB5PR08MB0966B1DD00830BEB9B13B6CAC3FF0@DB5PR08MB0966.eurprd08.prod.outlook.com>,
 <CANw+MznsLV92y6vivH8z+9g_AyCaoG9L-a=-XufDcAb5b=FAdA@mail.gmail.com>
Message-ID: <DB5PR08MB0966C95B8C9DFCD2A06FAF1AC3FE0@DB5PR08MB0966.eurprd08.prod.outlook.com>

Hi Damien,


Are you at PyCon in Cardiff on Friday?

If so I will be doing some micro:bit demos, some of which make use of Adafruit modules.

Maybe we could have a chat during the day.



Nevil


________________________________
From: Microbit <microbit-bounces+nevil.hunt=hotmail.co.uk at python.org> on behalf of Damien George <damien.p.george at gmail.com>
Sent: 13 September 2016 08:56
To: For Pythonic MicroBit related discussions
Subject: Re: [Microbit-Python] Adafruit MicroPython Video

What kind of ideas do you have?

On 12 September 2016 at 18:53, Nevil Hunt <nevil.hunt at hotmail.co.uk> wrote:
> Hi,
>
>
> I've just watched this Adafruit MicroPython Video:-
>
>
> https://www.youtube.com/watch?v=8btQWSu7DdM

[https://www.bing.com/th?id=OVP.V6928a269d508f164ab2f8bdf023f6264&pid=Api]<https://www.youtube.com/watch?v=8btQWSu7DdM>

MicroPython Basics: What is MicroPython? with Tony D! @ ...<https://www.youtube.com/watch?v=8btQWSu7DdM>
www.youtube.com
Live stream to http://twitch.tv/adafruit looking at the MicroPython programming language, how it compares to Arduino, and demos of what it can do. Companion to the ...



>
>
> which shows some of the power of MicroPython including (in the last 10
> minutes) a demo of MicroPython on the micro:bit! Worth watching!
>
>
> Is anyone in contact with Tony DiCola or anyone else from Adafruit? I've got
> some ideas related to the micro:bit which I'd like to discuss with them.
>
>
>
> Cheers,
>
>
> Nevil
>
>
>
>
> _______________________________________________
> Microbit mailing list
> Microbit at python.org
> https://mail.python.org/mailman/listinfo/microbit
>
_______________________________________________
Microbit mailing list
Microbit at python.org
https://mail.python.org/mailman/listinfo/microbit
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From ntoll at ntoll.org  Tue Sep 13 05:25:56 2016
From: ntoll at ntoll.org (Nicholas H.Tollervey)
Date: Tue, 13 Sep 2016 10:25:56 +0100
Subject: [Microbit-Python] Adafruit MicroPython Video
In-Reply-To: <DB5PR08MB0966C95B8C9DFCD2A06FAF1AC3FE0@DB5PR08MB0966.eurprd08.prod.outlook.com>
References: <DB5PR08MB0966B1DD00830BEB9B13B6CAC3FF0@DB5PR08MB0966.eurprd08.prod.outlook.com>
 <CANw+MznsLV92y6vivH8z+9g_AyCaoG9L-a=-XufDcAb5b=FAdA@mail.gmail.com>
 <DB5PR08MB0966C95B8C9DFCD2A06FAF1AC3FE0@DB5PR08MB0966.eurprd08.prod.outlook.com>
Message-ID: <ed19a0d5-05bf-41fe-d2fb-d90f177ff836@ntoll.org>

On 13/09/16 10:22, Nevil Hunt wrote:
> Hi Damien,
> 
> 
> Are you at PyCon in Cardiff on Friday?
> 
> If so I will be doing some micro:bit demos, some of which make use of
> Adafruit modules.
> 
> Maybe we could have a chat during the day.
> 
> 
> 
> Nevil
> 

Nevil,

I too would love to see Damien at PyCon UK, but alas, Damien has moved
back to Australia. I can see why: by the looks of the photos, Australian
winters are better than British summers.

:-)

N.


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From mal at egenix.com  Wed Sep 14 15:15:22 2016
From: mal at egenix.com (M.-A. Lemburg)
Date: Wed, 14 Sep 2016 21:15:22 +0200
Subject: [Microbit-Python] importing modules using uflash
In-Reply-To: <20160911140029.4531b408@ghostwheel>
References: <e6f59ea0-04be-f497-b1e1-5911ebcc6353@yahoo.co.uk>
 <20160911122743.2ec55d15@ghostwheel>
 <CABeH_SvMA820NFaZ_7V0YZwji37sO+ZO=RXsOw-E+YzHTvS_5A@mail.gmail.com>
 <61bc2f45-18fa-e560-ab8e-0f0d334769e3@yahoo.co.uk>
 <20160911140029.4531b408@ghostwheel>
Message-ID: <57D9A1CA.5060802@egenix.com>

On 11.09.2016 14:00, Radomir Dopieralski wrote:
> 
> Not quite.
> 
> It doesn't matter how you upload your main script -- you can use uFlash
> or Mu or the online editor, or even prepare the hex file yourself by
> hand. The thing is, that the hex file can contain only one python file
> in it.
> 
> However, there is also internal filesystem on the micro:bit, where you
> can put additional files to be imported by your main script. The most
> convenient way to access that filesystem and upload your files is by
> using the latest version of the Mu editor. Of course, you could as well
> just write a program that creates the file and writes its contents, but
> that is a little roundabout way of doing it.
> 
> I hope this helps.

Is the functionality needed for uploading modules to the
MB documented somewhere ? (A pointer to the right place
in the Mu editor code would already help :-))

Background: I've been looking for something like a few months
ago and back then, there was no filesystem module import for
the MB.

Thanks.

> On Sun, 11 Sep 2016 12:47:20 +0100
> "hot.toast via Microbit" <microbit at python.org> wrote:
> 
>> So as i understand it,
>>
>> 1. uFlash is limited to python scripts that contain all the local 
>> function and class definitions. The only imports that are allowed are 
>> those from the microbit version of micropython.
>>
>> 2. If I want to import  "mymodule.py" from a file on my local hard 
>> drive, I will have to use the latest version of the mu editor...
>>
>> On 11/09/16 12:19, David Whale wrote:
>>> Make sure you use the most up to date version of Mu though to do
>>> this, as it was a feature that was added reasonably recently. The
>>> version of Mu in the Raspberry Pi repo's is still out of date at
>>> the moment, and might not have this feature included yet.
> 
> 

-- 
Marc-Andre Lemburg
eGenix.com

Professional Python Services directly from the Experts (#1, Sep 14 2016)
>>> Python Projects, Coaching and Consulting ...  http://www.egenix.com/
>>> Python Database Interfaces ...           http://products.egenix.com/
>>> Plone/Zope Database Interfaces ...           http://zope.egenix.com/
________________________________________________________________________

::: We implement business ideas - efficiently in both time and costs :::

   eGenix.com Software, Skills and Services GmbH  Pastor-Loeh-Str.48
    D-40764 Langenfeld, Germany. CEO Dipl.-Math. Marc-Andre Lemburg
           Registered at Amtsgericht Duesseldorf: HRB 46611
               http://www.egenix.com/company/contact/
                      http://www.malemburg.com/


From microbit at sheep.art.pl  Wed Sep 14 15:55:28 2016
From: microbit at sheep.art.pl (Radomir Dopieralski)
Date: Wed, 14 Sep 2016 21:55:28 +0200
Subject: [Microbit-Python] importing modules using uflash
In-Reply-To: <57D9A1CA.5060802@egenix.com>
References: <e6f59ea0-04be-f497-b1e1-5911ebcc6353@yahoo.co.uk>
 <20160911122743.2ec55d15@ghostwheel>
 <CABeH_SvMA820NFaZ_7V0YZwji37sO+ZO=RXsOw-E+YzHTvS_5A@mail.gmail.com>
 <61bc2f45-18fa-e560-ab8e-0f0d334769e3@yahoo.co.uk>
 <20160911140029.4531b408@ghostwheel> <57D9A1CA.5060802@egenix.com>
Message-ID: <20160914215528.24d35ba7@ghostwheel>

It just uses normal python commands, such as open(), file.read(),
file.write(), os.listdir() and so on, but executes them over the REPL
console. You can see exactly what it does here:
https://github.com/ntoll/mu/blob/master/mu/contrib/microfs.py

On Wed, 14 Sep 2016 21:15:22 +0200
"M.-A. Lemburg" <mal at egenix.com> wrote:

> On 11.09.2016 14:00, Radomir Dopieralski wrote:
> > 
> > Not quite.
> > 
> > It doesn't matter how you upload your main script -- you can use
> > uFlash or Mu or the online editor, or even prepare the hex file
> > yourself by hand. The thing is, that the hex file can contain only
> > one python file in it.
> > 
> > However, there is also internal filesystem on the micro:bit, where
> > you can put additional files to be imported by your main script.
> > The most convenient way to access that filesystem and upload your
> > files is by using the latest version of the Mu editor. Of course,
> > you could as well just write a program that creates the file and
> > writes its contents, but that is a little roundabout way of doing
> > it.
> > 
> > I hope this helps.
> 
> Is the functionality needed for uploading modules to the
> MB documented somewhere ? (A pointer to the right place
> in the Mu editor code would already help :-))
> 
> Background: I've been looking for something like a few months
> ago and back then, there was no filesystem module import for
> the MB.
> 
> Thanks.
> 
> > On Sun, 11 Sep 2016 12:47:20 +0100
> > "hot.toast via Microbit" <microbit at python.org> wrote:
> > 
> >> So as i understand it,
> >>
> >> 1. uFlash is limited to python scripts that contain all the local 
> >> function and class definitions. The only imports that are allowed
> >> are those from the microbit version of micropython.
> >>
> >> 2. If I want to import  "mymodule.py" from a file on my local hard 
> >> drive, I will have to use the latest version of the mu editor...
> >>
> >> On 11/09/16 12:19, David Whale wrote:
> >>> Make sure you use the most up to date version of Mu though to do
> >>> this, as it was a feature that was added reasonably recently. The
> >>> version of Mu in the Raspberry Pi repo's is still out of date at
> >>> the moment, and might not have this feature included yet.
> > 
> > 
> 



-- 
Radomir Dopieralski

-- 
Radomir Dopieralski

From mal at egenix.com  Wed Sep 14 16:03:57 2016
From: mal at egenix.com (M.-A. Lemburg)
Date: Wed, 14 Sep 2016 22:03:57 +0200
Subject: [Microbit-Python] importing modules using uflash
In-Reply-To: <20160914215528.24d35ba7@ghostwheel>
References: <e6f59ea0-04be-f497-b1e1-5911ebcc6353@yahoo.co.uk>
 <20160911122743.2ec55d15@ghostwheel>
 <CABeH_SvMA820NFaZ_7V0YZwji37sO+ZO=RXsOw-E+YzHTvS_5A@mail.gmail.com>
 <61bc2f45-18fa-e560-ab8e-0f0d334769e3@yahoo.co.uk>
 <20160911140029.4531b408@ghostwheel> <57D9A1CA.5060802@egenix.com>
 <20160914215528.24d35ba7@ghostwheel>
Message-ID: <57D9AD2D.8060600@egenix.com>

On 14.09.2016 21:55, Radomir Dopieralski wrote:
> It just uses normal python commands, such as open(), file.read(),
> file.write(), os.listdir() and so on, but executes them over the REPL
> console. You can see exactly what it does here:
> https://github.com/ntoll/mu/blob/master/mu/contrib/microfs.py

Great, thanks.

I think this would make an excellent addition to the uflash
tool - for those of us who prefer emacs over mu ;-)



> On Wed, 14 Sep 2016 21:15:22 +0200
> "M.-A. Lemburg" <mal at egenix.com> wrote:
> 
>> On 11.09.2016 14:00, Radomir Dopieralski wrote:
>>>
>>> Not quite.
>>>
>>> It doesn't matter how you upload your main script -- you can use
>>> uFlash or Mu or the online editor, or even prepare the hex file
>>> yourself by hand. The thing is, that the hex file can contain only
>>> one python file in it.
>>>
>>> However, there is also internal filesystem on the micro:bit, where
>>> you can put additional files to be imported by your main script.
>>> The most convenient way to access that filesystem and upload your
>>> files is by using the latest version of the Mu editor. Of course,
>>> you could as well just write a program that creates the file and
>>> writes its contents, but that is a little roundabout way of doing
>>> it.
>>>
>>> I hope this helps.
>>
>> Is the functionality needed for uploading modules to the
>> MB documented somewhere ? (A pointer to the right place
>> in the Mu editor code would already help :-))
>>
>> Background: I've been looking for something like a few months
>> ago and back then, there was no filesystem module import for
>> the MB.
>>
>> Thanks.
>>
>>> On Sun, 11 Sep 2016 12:47:20 +0100
>>> "hot.toast via Microbit" <microbit at python.org> wrote:
>>>
>>>> So as i understand it,
>>>>
>>>> 1. uFlash is limited to python scripts that contain all the local 
>>>> function and class definitions. The only imports that are allowed
>>>> are those from the microbit version of micropython.
>>>>
>>>> 2. If I want to import  "mymodule.py" from a file on my local hard 
>>>> drive, I will have to use the latest version of the mu editor...
>>>>
>>>> On 11/09/16 12:19, David Whale wrote:
>>>>> Make sure you use the most up to date version of Mu though to do
>>>>> this, as it was a feature that was added reasonably recently. The
>>>>> version of Mu in the Raspberry Pi repo's is still out of date at
>>>>> the moment, and might not have this feature included yet.
>>>
>>>
>>
> 
> 
> 

-- 
Marc-Andre Lemburg
eGenix.com

Professional Python Services directly from the Experts (#1, Sep 14 2016)
>>> Python Projects, Coaching and Consulting ...  http://www.egenix.com/
>>> Python Database Interfaces ...           http://products.egenix.com/
>>> Plone/Zope Database Interfaces ...           http://zope.egenix.com/
________________________________________________________________________

::: We implement business ideas - efficiently in both time and costs :::

   eGenix.com Software, Skills and Services GmbH  Pastor-Loeh-Str.48
    D-40764 Langenfeld, Germany. CEO Dipl.-Math. Marc-Andre Lemburg
           Registered at Amtsgericht Duesseldorf: HRB 46611
               http://www.egenix.com/company/contact/
                      http://www.malemburg.com/


From microbit at sheep.art.pl  Wed Sep 14 16:11:50 2016
From: microbit at sheep.art.pl (Radomir Dopieralski)
Date: Wed, 14 Sep 2016 22:11:50 +0200
Subject: [Microbit-Python] importing modules using uflash
In-Reply-To: <57D9AD2D.8060600@egenix.com>
References: <e6f59ea0-04be-f497-b1e1-5911ebcc6353@yahoo.co.uk>
 <20160911122743.2ec55d15@ghostwheel>
 <CABeH_SvMA820NFaZ_7V0YZwji37sO+ZO=RXsOw-E+YzHTvS_5A@mail.gmail.com>
 <61bc2f45-18fa-e560-ab8e-0f0d334769e3@yahoo.co.uk>
 <20160911140029.4531b408@ghostwheel> <57D9A1CA.5060802@egenix.com>
 <20160914215528.24d35ba7@ghostwheel> <57D9AD2D.8060600@egenix.com>
Message-ID: <20160914221150.5398b8bd@ghostwheel>

As Nicholas already mentioned, this module works also as a standalone
command line tool.

On Wed, 14 Sep 2016 22:03:57 +0200
"M.-A. Lemburg" <mal at egenix.com> wrote:

> On 14.09.2016 21:55, Radomir Dopieralski wrote:
> > It just uses normal python commands, such as open(), file.read(),
> > file.write(), os.listdir() and so on, but executes them over the
> > REPL console. You can see exactly what it does here:
> > https://github.com/ntoll/mu/blob/master/mu/contrib/microfs.py
> 
> Great, thanks.
> 
> I think this would make an excellent addition to the uflash
> tool - for those of us who prefer emacs over mu ;-)
> 
> 
> 
> > On Wed, 14 Sep 2016 21:15:22 +0200
> > "M.-A. Lemburg" <mal at egenix.com> wrote:
> > 
> >> On 11.09.2016 14:00, Radomir Dopieralski wrote:
> >>>
> >>> Not quite.
> >>>
> >>> It doesn't matter how you upload your main script -- you can use
> >>> uFlash or Mu or the online editor, or even prepare the hex file
> >>> yourself by hand. The thing is, that the hex file can contain only
> >>> one python file in it.
> >>>
> >>> However, there is also internal filesystem on the micro:bit, where
> >>> you can put additional files to be imported by your main script.
> >>> The most convenient way to access that filesystem and upload your
> >>> files is by using the latest version of the Mu editor. Of course,
> >>> you could as well just write a program that creates the file and
> >>> writes its contents, but that is a little roundabout way of doing
> >>> it.
> >>>
> >>> I hope this helps.
> >>
> >> Is the functionality needed for uploading modules to the
> >> MB documented somewhere ? (A pointer to the right place
> >> in the Mu editor code would already help :-))
> >>
> >> Background: I've been looking for something like a few months
> >> ago and back then, there was no filesystem module import for
> >> the MB.
> >>
> >> Thanks.
> >>
> >>> On Sun, 11 Sep 2016 12:47:20 +0100
> >>> "hot.toast via Microbit" <microbit at python.org> wrote:
> >>>
> >>>> So as i understand it,
> >>>>
> >>>> 1. uFlash is limited to python scripts that contain all the
> >>>> local function and class definitions. The only imports that are
> >>>> allowed are those from the microbit version of micropython.
> >>>>
> >>>> 2. If I want to import  "mymodule.py" from a file on my local
> >>>> hard drive, I will have to use the latest version of the mu
> >>>> editor...
> >>>>
> >>>> On 11/09/16 12:19, David Whale wrote:
> >>>>> Make sure you use the most up to date version of Mu though to do
> >>>>> this, as it was a feature that was added reasonably recently.
> >>>>> The version of Mu in the Raspberry Pi repo's is still out of
> >>>>> date at the moment, and might not have this feature included
> >>>>> yet.
> >>>
> >>>
> >>
> > 
> > 
> > 
> 



-- 
Radomir Dopieralski

-- 
Radomir Dopieralski

From ntoll at ntoll.org  Wed Sep 14 18:13:43 2016
From: ntoll at ntoll.org (Nicholas H.Tollervey)
Date: Wed, 14 Sep 2016 23:13:43 +0100
Subject: [Microbit-Python] importing modules using uflash
In-Reply-To: <20160914221150.5398b8bd@ghostwheel>
References: <e6f59ea0-04be-f497-b1e1-5911ebcc6353@yahoo.co.uk>
 <20160911122743.2ec55d15@ghostwheel>
 <CABeH_SvMA820NFaZ_7V0YZwji37sO+ZO=RXsOw-E+YzHTvS_5A@mail.gmail.com>
 <61bc2f45-18fa-e560-ab8e-0f0d334769e3@yahoo.co.uk>
 <20160911140029.4531b408@ghostwheel> <57D9A1CA.5060802@egenix.com>
 <20160914215528.24d35ba7@ghostwheel> <57D9AD2D.8060600@egenix.com>
 <20160914221150.5398b8bd@ghostwheel>
Message-ID: <eb361287-8879-0d7a-8f3e-3083ac87bd64@ntoll.org>

Here:

http://microfs.readthedocs.io/en/latest/

In general I'm heading towards de-coupling Mu from Qt by building useful
functionality in modules like uflash and microfs that Mu sits on top of.

Hope this helps and see you all at PyCon UK this weekend...

:-)

N.

On 14/09/16 21:11, Radomir Dopieralski wrote:
> As Nicholas already mentioned, this module works also as a standalone
> command line tool.
> 
> On Wed, 14 Sep 2016 22:03:57 +0200
> "M.-A. Lemburg" <mal at egenix.com> wrote:
> 
>> On 14.09.2016 21:55, Radomir Dopieralski wrote:
>>> It just uses normal python commands, such as open(), file.read(),
>>> file.write(), os.listdir() and so on, but executes them over the
>>> REPL console. You can see exactly what it does here:
>>> https://github.com/ntoll/mu/blob/master/mu/contrib/microfs.py
>>
>> Great, thanks.
>>
>> I think this would make an excellent addition to the uflash
>> tool - for those of us who prefer emacs over mu ;-)
>>
>>
>>
>>> On Wed, 14 Sep 2016 21:15:22 +0200
>>> "M.-A. Lemburg" <mal at egenix.com> wrote:
>>>
>>>> On 11.09.2016 14:00, Radomir Dopieralski wrote:
>>>>>
>>>>> Not quite.
>>>>>
>>>>> It doesn't matter how you upload your main script -- you can use
>>>>> uFlash or Mu or the online editor, or even prepare the hex file
>>>>> yourself by hand. The thing is, that the hex file can contain only
>>>>> one python file in it.
>>>>>
>>>>> However, there is also internal filesystem on the micro:bit, where
>>>>> you can put additional files to be imported by your main script.
>>>>> The most convenient way to access that filesystem and upload your
>>>>> files is by using the latest version of the Mu editor. Of course,
>>>>> you could as well just write a program that creates the file and
>>>>> writes its contents, but that is a little roundabout way of doing
>>>>> it.
>>>>>
>>>>> I hope this helps.
>>>>
>>>> Is the functionality needed for uploading modules to the
>>>> MB documented somewhere ? (A pointer to the right place
>>>> in the Mu editor code would already help :-))
>>>>
>>>> Background: I've been looking for something like a few months
>>>> ago and back then, there was no filesystem module import for
>>>> the MB.
>>>>
>>>> Thanks.
>>>>
>>>>> On Sun, 11 Sep 2016 12:47:20 +0100
>>>>> "hot.toast via Microbit" <microbit at python.org> wrote:
>>>>>
>>>>>> So as i understand it,
>>>>>>
>>>>>> 1. uFlash is limited to python scripts that contain all the
>>>>>> local function and class definitions. The only imports that are
>>>>>> allowed are those from the microbit version of micropython.
>>>>>>
>>>>>> 2. If I want to import  "mymodule.py" from a file on my local
>>>>>> hard drive, I will have to use the latest version of the mu
>>>>>> editor...
>>>>>>
>>>>>> On 11/09/16 12:19, David Whale wrote:
>>>>>>> Make sure you use the most up to date version of Mu though to do
>>>>>>> this, as it was a feature that was added reasonably recently.
>>>>>>> The version of Mu in the Raspberry Pi repo's is still out of
>>>>>>> date at the moment, and might not have this feature included
>>>>>>> yet.
>>>>>
>>>>>
>>>>
>>>
>>>
>>>
>>
> 
> 
> 


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From jj at gioorgi.com  Thu Sep 15 04:34:33 2016
From: jj at gioorgi.com (Giovanni Giorgi)
Date: Thu, 15 Sep 2016 10:34:33 +0200
Subject: [Microbit-Python] Adding an extra C module to microbit: howto?
In-Reply-To: <39e8f564d99500b52ec516509d5d402a@webmail.webfaction.com>
References: <865b20760414c42ec7e261a78c21f498@webmail.webfaction.com>
 <CANw+Mzkf6F22h2xTh6RtX1bAun6WLOesMD_=5VTfj_gCWB5N7g@mail.gmail.com>
 <39e8f564d99500b52ec516509d5d402a@webmail.webfaction.com>
Message-ID: <6e6c33de1f13d049962f2ea3d6082420@webmail.webfaction.com>

Hi all, 

 I'd like to try to add a new module to microbit micropython project. 

I have digged a bit on the source, looking how the audio module is
defined. 

I only need only to touch the following files? 

source/microbit/mod<mymodule>.c 

inc/genhdr/qstrdefs.generated.h 

inc/microbit/mpconfigport.h 

inc/microbit/qstrdefsport.h 

Do you have a small guide on how to do it? 
I have also downloaded the official micropython project but I have no
luck (perhaps I missed something...). 
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From microbit at sheep.art.pl  Thu Sep 15 04:41:28 2016
From: microbit at sheep.art.pl (Radomir Dopieralski)
Date: Thu, 15 Sep 2016 10:41:28 +0200
Subject: [Microbit-Python] Adding an extra C module to microbit: howto?
In-Reply-To: <6e6c33de1f13d049962f2ea3d6082420@webmail.webfaction.com>
References: <865b20760414c42ec7e261a78c21f498@webmail.webfaction.com>
 <CANw+Mzkf6F22h2xTh6RtX1bAun6WLOesMD_=5VTfj_gCWB5N7g@mail.gmail.com>
 <39e8f564d99500b52ec516509d5d402a@webmail.webfaction.com>
 <6e6c33de1f13d049962f2ea3d6082420@webmail.webfaction.com>
Message-ID: <20160915104128.18ca6cc5@ghostwheel>

Hi Giovani,

there isn't much documentation, the source files and the "sample"
branches at https://github.com/dhylands/micropython/tree/c-sample2 are
the best sources of knowledge so far. Because of that I started an
unofficial developer documentation at
http://micropython-dev-docs.rtfd.io/ and I have recently added a
chapter about adding your own module -- maybe that will be helpful.

If you see any mistakes or opportunity for improvement, or want to add
something, don't hesitate to make a pull request. Note however, that
this is about general micropython, and the micro:bit port may have some
special cases.

On Thu, 15 Sep 2016 10:34:33 +0200
Giovanni Giorgi <jj at gioorgi.com> wrote:

> Hi all, 
> 
>  I'd like to try to add a new module to microbit micropython project. 
> 
> I have digged a bit on the source, looking how the audio module is
> defined. 
> 
> I only need only to touch the following files? 
> 
> source/microbit/mod<mymodule>.c 
> 
> inc/genhdr/qstrdefs.generated.h 
> 
> inc/microbit/mpconfigport.h 
> 
> inc/microbit/qstrdefsport.h 
> 
> Do you have a small guide on how to do it? 
> I have also downloaded the official micropython project but I have no
> luck (perhaps I missed something...). 


-- 
Radomir Dopieralski

-- 
Radomir Dopieralski

From jj at gioorgi.com  Sat Sep 17 02:50:32 2016
From: jj at gioorgi.com (Giovanni Giorgi)
Date: Sat, 17 Sep 2016 08:50:32 +0200
Subject: [Microbit-Python] Micro python: heap memory tuning
Message-ID: <CB859D83-7D3F-4D4C-AB18-888340111A7C@gioorgi.com>

Hi,
 I am playing with micropython microbit implementation.
I have removed some modules from the compilation, thus reducing the final compiled hex
I'd like to understand if I can extend the python heap space too.
I found in mprun.c the following lines:
....
    mp_stack_set_limit(1800); // stack is 2k

    // allocate the heap statically in the bss
    static uint32_t heap[9692 / 4];
    gc_init(heap, (uint8_t*)heap + sizeof(heap));
....

How can I compute the magic value 9692?
For instance if I remove some static allocated code, how can I compute a new larger value?
Also the dynamic heap allocation commented how below, is usable or it is a "bad idea"?
....
    /*
    // allocate the heap using system malloc
    extern void *malloc(int);
    void *mheap = malloc(2000);
    gc_init(mheap, (byte*)mheap + 2000);
    */


--
Giovanni Giorgi
jj at gioorgi.com






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From damien.p.george at gmail.com  Mon Sep 19 09:40:34 2016
From: damien.p.george at gmail.com (Damien George)
Date: Mon, 19 Sep 2016 23:40:34 +1000
Subject: [Microbit-Python] Micro python: heap memory tuning
In-Reply-To: <CB859D83-7D3F-4D4C-AB18-888340111A7C@gioorgi.com>
References: <CB859D83-7D3F-4D4C-AB18-888340111A7C@gioorgi.com>
Message-ID: <CANw+Mz=JKJT+BYZsvrwMCmBp9WWqCz_5ebSstSQOt9i_arAiuA@mail.gmail.com>

You can try adjusting the 9692 value to get more heap.  At some point
you won't be able to link the final firmware because there's not
enough RAM for the requested heap.  The value that's there at the
moment is almost the maximum you can use (unless you remove some other
things that use bss/data).

Using malloc to allocate the heap is not a good idea (there's a small
mbed heap of about 2k but it's needed for the DAL, and hopefully one
day we can reclaim this memory).


On 17 September 2016 at 16:50, Giovanni Giorgi <jj at gioorgi.com> wrote:
> Hi,
>  I am playing with micropython microbit implementation.
> I have removed some modules from the compilation, thus reducing the final
> compiled hex
> I'd like to understand if I can extend the python heap space too.
> I found in mprun.c the following lines:
> ....
>     mp_stack_set_limit(1800); // stack is 2k
>
>     // allocate the heap statically in the bss
>     static uint32_t heap[9692 / 4];
>     gc_init(heap, (uint8_t*)heap + sizeof(heap));
> ....
>
> How can I compute the magic value 9692?
> For instance if I remove some static allocated code, how can I compute a new
> larger value?
> Also the dynamic heap allocation commented how below, is usable or it is a
> "bad idea"?
> ....
>     /*
>     // allocate the heap using system malloc
>     extern void *malloc(int);
>     void *mheap = malloc(2000);
>     gc_init(mheap, (byte*)mheap + 2000);
>     */
>
>
> --
> Giovanni Giorgi
> jj at gioorgi.com
>
>
>
>
>
>
>
> _______________________________________________
> Microbit mailing list
> Microbit at python.org
> https://mail.python.org/mailman/listinfo/microbit
>

From owen.ibberson at gmail.com  Wed Sep 21 12:45:26 2016
From: owen.ibberson at gmail.com (geniusatwork Games)
Date: Wed, 21 Sep 2016 17:45:26 +0100
Subject: [Microbit-Python] how to link the microbit to real python
Message-ID: <CAKHHNkeEt+UjzGevDHdx=8udOrPzc2Hej=mE-S8PoReB=9X6xw@mail.gmail.com>


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From ntoll at ntoll.org  Thu Sep 22 08:57:18 2016
From: ntoll at ntoll.org (Nicholas H.Tollervey)
Date: Thu, 22 Sep 2016 13:57:18 +0100
Subject: [Microbit-Python] how to link the microbit to real python
In-Reply-To: <CAKHHNkeEt+UjzGevDHdx=8udOrPzc2Hej=mE-S8PoReB=9X6xw@mail.gmail.com>
References: <CAKHHNkeEt+UjzGevDHdx=8udOrPzc2Hej=mE-S8PoReB=9X6xw@mail.gmail.com>
Message-ID: <89c10e6f-6cfd-b2cb-c620-5a9759e22b10@ntoll.org>

On 21/09/16 17:45, geniusatwork Games wrote:
> 
> 
> 
> _______________________________________________
> Microbit mailing list
> Microbit at python.org
> https://mail.python.org/mailman/listinfo/microbit
> 

Hi Owen,

Please subscribe to the mailing list before posting (see the URL
referenced above for how to do this)! Also, did your client cut off the
body of the email. We only saw the rather opaque subject.

Best wishes,

N.

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From jj at gioorgi.com  Sat Sep 24 08:12:56 2016
From: jj at gioorgi.com (Giovanni Giorgi)
Date: Sat, 24 Sep 2016 14:12:56 +0200
Subject: [Microbit-Python] How to exclude some modules and how to supped up
 build?
Message-ID: <3AF29F61-1FAA-4C78-BAD5-D1D79F93EA04@gioorgi.com>

Hi, 
 I am playing with micro: bit micropython source code:
https://github.com/bbcmicrobit/micropython

I have found a bit difficult to exclude module from the build.
Even if I do not expose them in the inc/microbit/mpconfigport.h
(editing the MICROPY_PORT_BUILTIN_MODULES macro)
they seems get linked in the final executable.

For instance I have evidence the music callback function microbit_music_tick
get linked even if I exclude the modmusic module from the MICROPY_PORT_BUILTIN_MODULES.

I have to define a macro to exclude module code from the build, but this is quite ugly because I need to put a lot of 
if-define in a lot of file. I feel it is as a dark side path :(

There is a better way of doing it?


Also, the "yt build" re-build every time the entire source tree (200+ file).
There is a faster way to simply check my C++ module syntax?

Thank you!

--
Giovanni Giorgi
jj at gioorgi.com






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From jim at groklearning.com  Mon Sep 26 05:22:05 2016
From: jim at groklearning.com (Jim Mussared)
Date: Mon, 26 Sep 2016 19:22:05 +1000
Subject: [Microbit-Python] How to exclude some modules and how to supped
 up build?
In-Reply-To: <3AF29F61-1FAA-4C78-BAD5-D1D79F93EA04@gioorgi.com>
References: <3AF29F61-1FAA-4C78-BAD5-D1D79F93EA04@gioorgi.com>
Message-ID: <CAHPki7+3kW-C23xDLLqKwaahT=k4ppjyJmpuY6KhW4LHGR_45g@mail.gmail.com>

On 24 September 2016 at 22:12, Giovanni Giorgi <jj at gioorgi.com> wrote:
> Hi,
>  I am playing with micro: bit micropython source code:
> https://github.com/bbcmicrobit/micropython
>
> I have found a bit difficult to exclude module from the build.
> Even if I do not expose them in the inc/microbit/mpconfigport.h
> (editing the MICROPY_PORT_BUILTIN_MODULES macro)
> they seems get linked in the final executable.
>
> For instance I have evidence the music callback function microbit_music_tick
> get linked even if I exclude the modmusic module from the
> MICROPY_PORT_BUILTIN_MODULES.

This function will get linked regardless because it is invoked
directly from main.cpp (in the microbit_ticker function).

In general though, removing the module from the list in
MICROPY_PORT_BUILTIN_MODULES works.

e.g.

$ /usr/bin/arm-none-eabi-nm
build/bbc-microbit-classic-gcc-nosd/source/microbit-micropython | grep
neopixel
00022d14 T neopixel_clear
000028e8 t neopixel_clear_
00004568 T neopixel_init
000029a8 t neopixel_make_new
0002b340 T neopixel_module
00022d3a T neopixel_set_color
000045b4 T neopixel_show
000028d8 t neopixel_show_
000028f8 t neopixel_subscr
0002b34c T neopixel_type
000229a8 t neopixel_unary_op
0002b2e8 t _ZL17neopixel_show_obj
0002b2f4 t _ZL18neopixel_clear_obj
0002b300 t _ZL20neopixel_locals_dict
0002b310 t _ZL23neopixel_module_globals
0002b320 t _ZL26neopixel_locals_dict_table
0002b330 t _ZL29neopixel_module_globals_table

Then if I remove the neopixel module from the list:

$ /usr/bin/arm-none-eabi-nm
build/bbc-microbit-classic-gcc-nosd/source/microbit-micropython | grep
neopixel
(nothing)

>
> I have to define a macro to exclude module code from the build, but this is
> quite ugly because I need to put a lot of
> if-define in a lot of file. I feel it is as a dark side path :(
>
> There is a better way of doing it?
>
>
> Also, the "yt build" re-build every time the entire source tree (200+ file).
> There is a faster way to simply check my C++ module syntax?

Just run the ninja build directly:
$ ninja -C build/bbc-microbit-classic-gcc-nosd

'yotta build' runs cmake to generate the ninja script, then invokes
ninja. You'll need to run 'yotta build' if you make changes to the
build (like adding/removing files), but for file changes just running
ninja directly is fine.

>
> Thank you!
>
> --
> Giovanni Giorgi
> jj at gioorgi.com
>
>
>
>
>
>
>
> _______________________________________________
> Microbit mailing list
> Microbit at python.org
> https://mail.python.org/mailman/listinfo/microbit
>

From jj at gioorgi.com  Wed Sep 28 16:31:51 2016
From: jj at gioorgi.com (Giovanni Giorgi)
Date: Wed, 28 Sep 2016 22:31:51 +0200
Subject: [Microbit-Python] How to exclude some modules and how to supped
 up build?
In-Reply-To: <CAHPki7+3kW-C23xDLLqKwaahT=k4ppjyJmpuY6KhW4LHGR_45g@mail.gmail.com>
References: <3AF29F61-1FAA-4C78-BAD5-D1D79F93EA04@gioorgi.com>
 <CAHPki7+3kW-C23xDLLqKwaahT=k4ppjyJmpuY6KhW4LHGR_45g@mail.gmail.com>
Message-ID: <B79C3474-D02F-49F2-B14F-17DECC0B137B@gioorgi.com>

Thank you: you changed my life because
now the build is very speedy.

About the build: I have found some functions are linked in the help_table_instances,
so you are unable to unlink them if you do not comment out the entry inside 
source/microbit/help.c

For neopixel works because it has no entry in help_table_instances.
I was forced to add some #if...#endif code to "cut out"  modules.

Thank you very much anyway!

On 26/set/2016, at 11:22, Jim Mussared via Microbit <microbit at python.org> wrote:

> ninja -C build/bbc-microbit-classic-gcc-nosd


--
Giovanni Giorgi
jj at gioorgi.com