STM32 ADCv2 SW triggered start not working Topic is solved

[faisal]

See adc_lld_start_conversion:

Code: Select all

  /* The start method is different depending if HW or SW triggered, the
     start is performed using the method specified in the CR2 configuration.*/
  if ((cr2 & ADC_CR2_SWSTART) != 0) {
    /* Initializing CR2 while keeping ADC_CR2_SWSTART at zero.*/
    adcp->adc->CR2 = (cr2 | ADC_CR2_CONT) & ~ADC_CR2_SWSTART;

    /* Finally enabling ADC_CR2_SWSTART.*/
    adcp->adc->CR2 = (cr2 | ADC_CR2_CONT);
  }
  else
    adcp->adc->CR2 = cr2;
}

The "Finally enabling ADC_CR2_SWSTART." code should be:

Code: Select all

adcp->adc->CR2 = (cr2 | ADC_CR2_SWSTART);

[Giovanni]

Hi,

Are you sure? the variable "cr2" already contains ADC_CR2_SWSTART, it should work as is.

Giovanni

[faisal]

Hi,

Are you sure? the variable "cr2" already contains ADC_CR2_SWSTART, it should work as is.

Giovanni

You're right . Sorry for the bother

[Giovanni]

Hi,

Np, better make sure.

Giovanni