103 lines
3.0 KiB
C++
103 lines
3.0 KiB
C++
//
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// Created by Luca on 9/21/2025.
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//
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#include "SHAL_ADC.h"
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//Can hard code registers on F0 because all F0 devices have only one ADC, and use only one clock
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SHAL_Result SHAL_ADC::init() {
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if(m_ADCKey == ADC_Key::INVALID || m_ADCKey == ADC_Key::NUM_ADC){
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return SHAL_Result::ERROR;
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}
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ADC_TypeDef* ADC_reg = getADCRegister(m_ADCKey);
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RCC->APB2ENR |= RCC_APB2ENR_ADC1EN; //Enable clock
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RCC->CR2 |= RCC_CR2_HSI14ON; //Start peripheral oscillator
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if(!SHAL_WAIT_FOR_CONDITION_US(((RCC->CR2 & RCC_CR2_HSI14RDY) != 0),50)){ //Wait for clock OKAY
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return SHAL_Result::ERROR;
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}
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if((ADC_reg->ISR & ADC_ISR_ADRDY) != 0){ //Set ADRDY to 0
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ADC_reg->ISR |= ADC_ISR_ADRDY;
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}
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ADC_reg->CR |= ADC_CR_ADEN; //Enable
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if(!SHAL_WAIT_FOR_CONDITION_US(((ADC_reg->ISR & ADC_ISR_ADRDY) != 0),50)){ //Wait for disable
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return SHAL_Result::ERROR;
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}
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if(calibrate() != SHAL_Result::OKAY){ //Calibrate
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return SHAL_Result::ERROR;
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}
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return SHAL_Result::OKAY;
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}
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SHAL_Result SHAL_ADC::calibrate() {
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if(m_ADCKey == ADC_Key::INVALID || m_ADCKey == ADC_Key::NUM_ADC){
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return SHAL_Result::ERROR;
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}
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ADC_TypeDef* ADC_reg = getADCRegister(m_ADCKey);
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if((ADC_reg->CR & ADC_CR_ADEN) != 0){ //Clear ADEN (enable)
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ADC_reg->CR |= ADC_CR_ADDIS;
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}
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if(!SHAL_WAIT_FOR_CONDITION_US(((ADC_reg->CR & ADC_CR_ADEN) == 0),50)){ //Wait for disable
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return SHAL_Result::ERROR;
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}
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ADC_reg->CFGR1 &= ~ADC_CFGR1_DMAEN; //Clear DMAEN
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ADC_reg->CR |= ADC_CR_ADCAL; //Launch calibration by setting ADCAL
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if(!SHAL_WAIT_FOR_CONDITION_US(((ADC_reg->CR & ADC_CR_ADCAL) == 0),50)){ //Wait for calibration
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return SHAL_Result::ERROR;
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}
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return SHAL_Result::OKAY;
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}
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uint16_t SHAL_ADC::singleConvertSingle(ADC_Channel channel, ADC_SampleTime time) {
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ADC_TypeDef* ADC_reg = getADCRegister(m_ADCKey);
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ADC->CCR |= ADC_CCR_VREFEN | ADC_CCR_TSEN; //Enable VREFINT and Temp sensor in global ADC struct
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ADC_reg->CHSELR = static_cast<uint32_t>(channel); //Enable channel for conversion
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ADC_reg->SMPR |= static_cast<uint32_t>(time); //Set sampling time
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if(!SHAL_WAIT_FOR_CONDITION_US(((ADC_reg->ISR & ADC_ISR_EOC) != 0),500)){ //Wait for conversion
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return 0; //Failed
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}
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uint16_t result = ADC_reg->DR;
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return result;
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}
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void SHAL_ADC::singleConvertSingle(ADC_Channel* channels, const int numChannels, uint16_t* result, ADC_SampleTime time) {
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ADC_TypeDef* ADC_reg = getADCRegister(m_ADCKey);
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ADC->CCR |= ADC_CCR_VREFEN | ADC_CCR_TSEN; //Enable VREFINT and Temp sensor in global ADC struct
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for(int i = 0; i < numChannels; i++){ //Enable all channels
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ADC_reg->CHSELR = static_cast<uint32_t>(channels[i]);
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}
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ADC_reg->SMPR |= static_cast<uint32_t>(time); //Set sampling time
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for(int i = 0; i < numChannels; i++){
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if(!SHAL_WAIT_FOR_CONDITION_US(((ADC_reg->ISR & ADC_ISR_EOC) != 0),500)){ //Wait for conversion
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continue; //Failed
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}
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result[i] = ADC_reg->DR;
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}
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} |