stm32/adc: Add ADC auto-calibration for L4 MCUs.

This increases the precision of the ADC.
2018-11-16 19:37:31 +01:00 · 2018-11-16 19:37:31 +01:00 · 9acc32b40f
parent 7c85c7c210
commit 9acc32b40f
1 changed files with 3 additions and 0 deletions
--- a/ports/stm32/adc.c
+++ b/ports/stm32/adc.c
@ -263,6 +263,9 @@ STATIC void adcx_init_periph(ADC_HandleTypeDef *adch, uint32_t resolution) {
    #if defined(STM32H7)
    HAL_ADCEx_Calibration_Start(adch, ADC_CALIB_OFFSET, ADC_SINGLE_ENDED);
    #endif
+    #if defined(STM32L4)
+    HAL_ADCEx_Calibration_Start(adch, ADC_SINGLE_ENDED);
+    #endif
 }

 STATIC void adc_init_single(pyb_obj_adc_t *adc_obj) {