Thanks for your ideas.
They are real square pulses, swinging from Vcc to 0V in a clean and sharp way. It is like the VCC is pulsed, impacting then other signals.
The base frequency is about 300Hz (slightly moving back and forth), each burst is 781us long and the burst is made of what could looks like a PWM signal but I would not swear.
My App runs entirely in Application_Ini(). It is a very small app (a kind of hello world but printing something coming from I2C2 as a parameter). And I have seen that during my application being executed, the pulses are gone. But it starts right after I leave Application_Ini(). I have commented everything in Application_Handler(), but the pulses are still there...
I have tried to use LCD_SetBackLightOff() to shut down the backlight but it had no effect.The backlight stayed on. I used also LCD_SetBackLight (2000) to dim it but it dim anything (OS V1.7). Not sure what is the problem there. Note I'm running RKitARM Rev 1.03.0004 (I have not updated yet to your CD image Rev 1-4).
I have ran the primer from BATTERY, and it does the same. So, it is not coming from my USB.
Regarding the MEMS generating those pulses, it looks unlikely as the MEMS consumes not even 1mA.
For the LEDs, when the Primer is being programmed, the green LED flashes but I see no pulses on the platform VCC3. Pulses starts only when the Primer comes to life (in debug or non-debug mode).
Do you see that also on your platform? Am I the only one who saw that?
I'm puzzled, I have to say.
Regards,
