Posted on November 17, 2017 at 08:23
Background:
1. 1ms timer to trigger adc interruput;
if(htim->Instance == TIM1)//1mS timer
{ HAL_ADC_Start_IT(&hadc); HAL_GPIO_TogglePin(GPIOA
,
Pin_15
); }2. hadc.Init.EOCSelection =
ADC_EOC_SEQ_CONV
;adc interruput callback function:
void HAL_ADC_ConvCpltCallback(ADC_HandleTypeDef* hadc)
{ if(__HAL_ADC_GET_FLAG(hadc,ADC_FLAG_EOC)) {HAL_GPIO_TogglePin(GPIOC,Pin_8);
} if(__HAL_ADC_GET_FLAG(hadc,ADC_FLAG_EOS)) { HAL_GPIO_TogglePin(GPIOA
,Pin_11);}3. MCU: STM32F072RB
When I use oscilloscope to check the adc time sequency, I find this odd:
Channel 1: PC8
Channel 2: PA11
Channel 4: PA15
At some moment, something triggered, the
ADC_FLAG_EOS is changed, and it should not appear.
#adc_flag_eos #interrupt-issue