ChibiOS Free Embedded RTOS

Hi all!

I'm using STM32L071 chip and after enabling the ADC(ADCv1) my code get stuck at adc_lld_init() function, digging a bit I filtered that it's being locked in the calibration procedure in the following code:



Probably my calibration flag is not being reset by HW. Anyone have faced this issue before and/or have adc working properly for this chip?

Appreciate any help.

Hi,

Which is the ADC clock source? look into your mcuconf.h.

ChibiOS version?

Giovanni

The current ADC clock source is STM32_ADC_CKMODE_ADCCLK and I'm at commit 14935 (ver20.3.1 I guess) https://osdn.net/projects/chibios/scm/svn/commits/14935

Rafael

Hi,

Could you try STM32_ADC_CKMODE_PCLK_DIV2 and see if it makes past that point?

BTW, that revision is very old and unsupported, I recommend using a recent trunk or a released version, lots of bugs have been fixed, some in that ADC driver too.

Giovanni

Hi,

Tried the change in ADC clock to STM32_ADC_CKMODE_PCLK_DIV2 and still getting locked at that same point, I will try the update for a recent released/trunk version and let you know the result... Thanks.

Rafael