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https://github.com/infiniteCable2/panda.git
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20dcba723d
* refactor panda side * fix misra? * use common ADC driver in jungle * fix misra fr now * fix oversampling * default channel macro * one more * this makes more sense --------- Co-authored-by: Comma Device <device@comma.ai>
32 lines
945 B
C
32 lines
945 B
C
#include "lladc_declarations.h"
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void register_set(volatile uint32_t *addr, uint32_t val, uint32_t mask);
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void adc_init(ADC_TypeDef *adc) {
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register_set(&(ADC->CCR), ADC_CCR_TSVREFE | ADC_CCR_VBATE, 0xC30000U);
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register_set(&(adc->CR2), ADC_CR2_ADON, 0xFF7F0F03U);
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}
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static uint16_t adc_get_raw(const adc_signal_t *signal) {
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// sample time
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if (signal->channel < 10U) {
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signal->adc->SMPR2 = ((uint32_t) signal->sample_time << (signal->channel * 3U));
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} else {
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signal->adc->SMPR1 = ((uint32_t) signal->sample_time << ((signal->channel - 10U) * 3U));
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}
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// select channel
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signal->adc->JSQR = ((uint32_t) signal->channel << 15U);
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// start conversion
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signal->adc->SR &= ~(ADC_SR_JEOC);
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signal->adc->CR2 |= ADC_CR2_JSWSTART;
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while (!(signal->adc->SR & ADC_SR_JEOC));
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return signal->adc->JDR1;
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}
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uint16_t adc_get_mV(const adc_signal_t *signal) {
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return (adc_get_raw(signal) * current_board->avdd_mV) / 4095U;
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}
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