ChibiOS Free Embedded RTOS

Hi,

I have meet a problem with stm32f4.

I have a program which does conversion on a channel at 1000hz,
and with newer version of master branch, after a few dozens of conversions,
the thread which does conversions blocks on adcConvert and remains in SUSPENDED state.

With a 2 months old version of Chibios, program run smoothly and
adcConvert does not block, so i suspect a regression between
2 months and now.

Alexandre

If, instead of using synchronous function adcConvert, i use, as a workaround, asynchronous function
adcStartConversion, and callback to process converted data, it works using current master branch.

Alexandre

Could you isolate the defective revision? the subversion log should show the commits on adc_lld.c|h.

Giovanni

seems to be more complicated than i have thought first.

* with 2 months old chibios, it works.

* if i copy old adc_lld.c|h on newest chibios, bug remains, so problem seems to not belong to adc_lld.c|h.

* if i slightly modify testhal/STM32F4xx/ADC to loop on adcConvert, i am not able to trigger the bug

So, it should be a side effect elsewhere, in my application, something somewhere does a nasty things and
thread remain in SUSPENDED state, so i think that the itr (or event) which should wake up the thread upon
adc completion never arrive.

Alexandre