[Paparazzi-devel] I2C ad lisa/L

[Eric BAHIER]

Hello,

I continue to work o my problemsss with Lisa/L and Aspirin 1.5like
I have solve some problems, wire connection length, and decoupling capa....

With the last GIT (V3.9) (with aspirin.c from july 19from Christophe). I 
have from 20sec to 5 minutes of stay in live I2C.
I have connect the logic analyzer on the I2C (SDA-SCL) and on Gyro-int 
and Mag-int.

The software read (@68) the  gyro when the interrupt occur, it "smell" 
perfect. each interrupt is followed by read cycle, then the interrupt 
request is clear. the interrupt remain every 1.8 ms.

Concerning the MAG (@1E) the software acces it every time, with or 
without interrupt.....
The MAG is able to give new measurement at 75hz (13ms), the interrupt 
request is present every 13ms, same as the specs.
 But the software read all the time.... evry about....400µsec, we have 
100µs free time between the end a read, and the beginning of the follow on.

on lisa/M the stability is (probably) better, but some time the MAG does 
not run....


thank for your help,

regards

Eric


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Eric BAHIER
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