microlab
/
scube
1
1
Fork 0
Code Issues Pull Requests Releases Activity

[SAMD51] Activate ADCs oversampled 12bits (#15874)

Browse Source
2.0.x
Giuliano Zaro 5 years ago committed by Scott Lahteine
parent e110f5abce
commit bb93ea1be4
2 changed files with 5 additions and 2 deletions
Show Stats Download Patch File Download Diff File

4
Marlin/src/HAL/HAL_SAMD51/HAL.cpp
Unescape Escape View File

@ -442,9 +442,11 @@ void HAL_adc_init() {
// Preloaded data (fixed for all ADC instances hence not loaded by DMA) // Preloaded data (fixed for all ADC instances hence not loaded by DMA)
adc->REFCTRL.bit.REFSEL = ADC_REFCTRL_REFSEL_AREFA_Val; // VRefA pin adc->REFCTRL.bit.REFSEL = ADC_REFCTRL_REFSEL_AREFA_Val; // VRefA pin
SYNC(adc->SYNCBUSY.bit.REFCTRL); SYNC(adc->SYNCBUSY.bit.REFCTRL);
adc->CTRLB.bit.RESSEL = ADC_CTRLB_RESSEL_10BIT_Val; adc->CTRLB.bit.RESSEL = ADC_CTRLB_RESSEL_12BIT_Val;
SYNC(adc->SYNCBUSY.bit.CTRLB); SYNC(adc->SYNCBUSY.bit.CTRLB);
adc->SAMPCTRL.bit.SAMPLEN = (6 - 1); // Sampling clocks adc->SAMPCTRL.bit.SAMPLEN = (6 - 1); // Sampling clocks
adc->AVGCTRL.reg = ADC_AVGCTRL_SAMPLENUM_16 | ADC_AVGCTRL_ADJRES(4); // 16 Accumulated conversions and shift 4 to get oversampled 12 bits result
SYNC(adc->SYNCBUSY.bit.AVGCTRL);
// Registers loaded by DMA // Registers loaded by DMA
adc->DSEQCTRL.bit.INPUTCTRL = true; adc->DSEQCTRL.bit.INPUTCTRL = true;

3
Marlin/src/HAL/HAL_SAMD51/HAL.h
Unescape Escape View File

@ -109,8 +109,9 @@ extern uint16_t HAL_adc_result; // result of last ADC conversion
void HAL_adc_init(); void HAL_adc_init();
#define HAL_ADC_FILTERED // Disable oversampling done in Marlin as ADC values already filtered in HAL
#define HAL_ADC_RESOLUTION 12
#define HAL_START_ADC(pin) HAL_adc_start_conversion(pin) #define HAL_START_ADC(pin) HAL_adc_start_conversion(pin)
#define HAL_ADC_RESOLUTION 10
#define HAL_READ_ADC() HAL_adc_result #define HAL_READ_ADC() HAL_adc_result
#define HAL_ADC_READY() true #define HAL_ADC_READY() true

Write Preview
Loading…
Cancel
Save