CMPS03 interface

Questions on control of serial busses
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YahooArchive
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Joined: Fri Oct 19, 2012 5:11 am

CMPS03 interface

Post by YahooArchive » Mon Oct 29, 2012 11:49 pm

> I got the CMPS03 working great reading pulse width mode.
>

You may be running faster than the CMPS03 can handle.

from the CMPS03 spec --

At speeds above around 160KHz the CPU cannot respond fast enough to
read the I2C data. Therefore a small delay of 50uS should be inserted
either side of writing the register address. No delays are required
anywhere else in the sequence.

---

You can slow the speed of the ARM I2C by placing

#define I2Cspeed100 ' before the #include <I2C.bas>

, or you could use TIMER to add the 50uS delay.



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