Beginning of cross platform support

SHAL/Src/STM32L4XX/Peripheral/ADC/SHAL_ADC.cpp

@@ -0,0 +1,115 @@
+//
+// Created by Luca on 9/21/2025.
+//
+
+#include "SHAL_ADC.h"
+
+//Can hard code registers on F0 because all F0 devices have only one ADC, and use only one clock
+SHAL_Result SHAL_ADC::init() {
+
+    if(m_ADCKey == ADC_Key::INVALID || m_ADCKey == ADC_Key::NUM_ADC){
+        return SHAL_Result::ERROR;
+    }
+
+    ADC_TypeDef* ADC_reg = getADCRegister(m_ADCKey);
+
+
+    RCC->APB2ENR |= RCC_APB2ENR_ADC1EN; //Enable clock
+    RCC->CR2 |= RCC_CR2_HSI14ON; //Start peripheral oscillator
+
+    if(!SHAL_WAIT_FOR_CONDITION_US(((RCC->CR2 & RCC_CR2_HSI14RDY) != 0),50)){ //Wait for clock OKAY
+        return SHAL_Result::ERROR;
+    }
+
+    if((ADC_reg->ISR & ADC_ISR_ADRDY) != 0){ //Set ADRDY to 0
+        ADC_reg->ISR |= ADC_ISR_ADRDY;
+    }
+
+    ADC_reg->CR |= ADC_CR_ADEN; //Enable
+
+    if(!SHAL_WAIT_FOR_CONDITION_US(((ADC_reg->ISR & ADC_ISR_ADRDY) != 0),50)){ //Wait for disable
+        return SHAL_Result::ERROR;
+    }
+
+    if(calibrate() != SHAL_Result::OKAY){ //Calibrate
+        return SHAL_Result::ERROR;
+    }
+
+    return SHAL_Result::OKAY;
+}
+
+SHAL_Result SHAL_ADC::calibrate() {
+
+    if(m_ADCKey == ADC_Key::INVALID || m_ADCKey == ADC_Key::NUM_ADC){
+        return SHAL_Result::ERROR;
+    }
+
+    ADC_TypeDef* ADC_reg = getADCRegister(m_ADCKey);
+
+    if((ADC_reg->CR & ADC_CR_ADEN) != 0){ //Clear ADEN (enable)
+        ADC_reg->CR |= ADC_CR_ADDIS;
+    }
+
+    if(!SHAL_WAIT_FOR_CONDITION_US(((ADC_reg->CR & ADC_CR_ADEN) == 0),50)){ //Wait for disable
+        return SHAL_Result::ERROR;
+    }
+
+    ADC_reg->CFGR1 &= ~ADC_CFGR1_DMAEN; //Clear DMAEN
+    ADC_reg->CR |= ADC_CR_ADCAL; //Launch calibration by setting ADCAL
+
+    if(!SHAL_WAIT_FOR_CONDITION_US(((ADC_reg->CR & ADC_CR_ADCAL) == 0),50)){ //Wait for calibration
+        return SHAL_Result::ERROR;
+    }
+
+    return SHAL_Result::OKAY;
+}
+
+uint16_t SHAL_ADC::singleConvertSingle(ADC_Channel channel, ADC_SampleTime time) {
+
+    ADC_TypeDef* ADC_reg = getADCRegister(m_ADCKey);
+
+    ADC->CCR |= ADC_CCR_VREFEN | ADC_CCR_TSEN; //Enable VREFINT and Temp sensor in global ADC struct
+
+    ADC_reg->CHSELR = static_cast<uint32_t>(channel); //Enable channel for conversion
+    ADC_reg->SMPR |= static_cast<uint32_t>(time); //Set sampling time
+
+    if(!SHAL_WAIT_FOR_CONDITION_US(((ADC_reg->ISR & ADC_ISR_EOC) != 0),500)){ //Wait for conversion
+        return 0; //Failed
+    }
+
+    uint16_t result = ADC_reg->DR;
+    return result;
+}
+
+void SHAL_ADC::multiConvertSingle(ADC_Channel* channels, const int numChannels, uint16_t* result, ADC_SampleTime time) {
+    ADC_TypeDef* ADC_reg = getADCRegister(m_ADCKey);
+
+    ADC->CCR |= ADC_CCR_VREFEN | ADC_CCR_TSEN; //Enable VREFINT and Temp sensor in global ADC struct
+
+    for(int i = 0; i < numChannels; i++){ //Enable all channels
+        ADC_reg->CHSELR = static_cast<uint32_t>(channels[i]);
+    }
+
+    ADC_reg->SMPR |= static_cast<uint32_t>(time); //Set sampling time
+
+
+    for(int i = 0; i < numChannels; i++){
+        if(!SHAL_WAIT_FOR_CONDITION_US(((ADC_reg->ISR & ADC_ISR_EOC) != 0),500)){ //Wait for conversion
+            continue; //Failed
+        }
+
+        result[i] = ADC_reg->DR;
+    }
+}
+
+SHAL_ADC &ADCManager::get(ADC_Key key) {
+    return m_ADCs[static_cast<uint8_t>(key)];
+}
+
+SHAL_ADC& ADCManager::getByIndex(int index) {
+
+    if(index < static_cast<int>(ADC_Key::NUM_ADC)){
+        return m_ADCs[index];
+    }
+    return m_ADCs[0];
+}