[Tutor] Continuous input at sample rate

Tue Feb 4 09:14:08 2003

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> I want to take information into my program continuously at 20=20
> samples per second,
>=20

I didn't understand the rest but to loop 20 times a second
 - provided your machine is fast enough! - do this:

while 1:
   sleep(0.05)  # 1/20s delay
   # do something here
   if someCondition: break

> The command to send to the device is *99c\r=20
> What do i need to change in regard to just polling the device?

Are you sending or polling(reading)?
Or both? Do you send to get a result back?=20

I don't understand sorry.=20

Alan g

Normally I would just poll the sensor i am using by sending *99p\r to =
the sensor.=20
         ser.write("*99c\r")
In response to this command the sensor would output a single sample.=20
    996   - 3,898   - 7,541
These are the x, y and z components of the strength and direction of a =
magnetic field.
I would like to take in continuous readings at the sample rate which is =
20sps.
To do this, send *99c\r to the serial port.=20
The output should send continuous readings to the computer through the =
serial port.=20

Not sure that this clears things up but it is a start
Thanks,
Deirdre=20

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=00s=00t=00a=00r=00t=00<=00/=00F=00O=00N=00T=00>=00<=00/=00D=00I=00V=00>=00=
=0D=00=0A=
=00<=00D=00I=00V=00>=00<=00F=00O=00N=00T=00 =
=00f=00a=00c=00e=00=3D=00A=00r=00i=00a=00l=00 =
=00s=00i=00z=00e=00=3D=002=00>=00T=00h=00a=00n=00k=00s=00,=00<=00/=00F=00=
O=00N=00T=00>=00<=00/=00D=00I=00V=00>=00=0D=00=0A=
=00<=00D=00I=00V=00>=00<=00F=00O=00N=00T=00 =
=00f=00a=00c=00e=00=3D=00A=00r=00i=00a=00l=00 =
=00s=00i=00z=00e=00=3D=002=00>=00D=00e=00i=00r=00d=00r=00e=00 =
=00<=00/=00F=00O=00N=00T=00>=00<=00/=00D=00I=00V=00>=00=0D=00=0A=
=00<=00D=00I=00V=00>=00&=00n=00b=00s=00p=00;=00<=00/=00D=00I=00V=00>=00=0D=
=00=0A=
=00<=00D=00I=00V=00>=00<=00B=00R=00>=00&=00n=00b=00s=00p=00;=00<=00/=00D=00=
I=00V=00>=00<=00/=00B=00O=00D=00Y=00>=00<=00/=00H=00T=00M=00L=00>=00=0D=00=0A=
=00
------=_NextPart_000_0040_01C2CC58.39698440--