128 lines
4.5 KiB
C++
128 lines
4.5 KiB
C++
//
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// Created by Luca on 8/30/2025.
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//
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#include "SHAL_GPIO.h"
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#include "SHAL_EXTI_CALLBACK.h"
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SHAL_GPIO::SHAL_GPIO() : m_GPIO_KEY(GPIO_Key::INVALID){
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//Do not initialize anything
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}
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SHAL_GPIO::SHAL_GPIO(GPIO_Key key) : m_GPIO_KEY(key) {
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volatile unsigned long* gpioEnable = getGPIORCCEnable(key).reg;
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unsigned long gpioOffset = getGPIORCCEnable(key).offset;
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*gpioEnable |= (1 << gpioOffset); //Set enable flag
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}
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void SHAL_GPIO::setLow() {
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auto gpioPeripheral = getGPIORegister(m_GPIO_KEY);
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gpioPeripheral.reg->ODR &= ~(1 << gpioPeripheral.global_offset);
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}
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void SHAL_GPIO::setHigh() {
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auto gpioPeripheral = getGPIORegister(m_GPIO_KEY);
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gpioPeripheral.reg->ODR |= (1 << gpioPeripheral.global_offset);
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}
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void SHAL_GPIO::toggle() volatile {
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SHAL_GPIO_Peripheral gpioPeripheral = getGPIORegister(m_GPIO_KEY);
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gpioPeripheral.reg->ODR ^= (1 << gpioPeripheral.global_offset);
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}
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void SHAL_GPIO::setPinType(PinType type) volatile {
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SHAL_GPIO_Peripheral gpioPeripheral = getGPIORegister(m_GPIO_KEY);
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gpioPeripheral.reg->OTYPER &= ~(1 << gpioPeripheral.global_offset);
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gpioPeripheral.reg->OTYPER |= (static_cast<uint8_t>(type) << gpioPeripheral.global_offset);
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}
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void SHAL_GPIO::setOutputSpeed(OutputSpeed speed) volatile {
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SHAL_GPIO_Peripheral gpioPeripheral = getGPIORegister(m_GPIO_KEY);
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gpioPeripheral.reg->OSPEEDR |= (static_cast<uint8_t>(speed) << (2 * gpioPeripheral.global_offset));
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}
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void SHAL_GPIO::setInternalResistor(InternalResistorType type) volatile {
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SHAL_GPIO_Peripheral gpioPeripheral = getGPIORegister(m_GPIO_KEY);
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gpioPeripheral.reg->PUPDR &= ~(0x03 << (2 * gpioPeripheral.global_offset));
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gpioPeripheral.reg->PUPDR |= (static_cast<uint8_t>(type) << (2 * gpioPeripheral.global_offset));
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}
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void SHAL_GPIO::setAlternateFunction(GPIO_Alternate_Function AF) volatile {
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SHAL_GPIO_Peripheral gpioPeripheral = getGPIORegister(m_GPIO_KEY);
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int afrIndex = gpioPeripheral.global_offset < 8 ? 0 : 1; //Get index of AFR
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gpioPeripheral.reg->AFR[afrIndex] &= ~(0xF << (gpioPeripheral.global_offset * 4));
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gpioPeripheral.reg->AFR[afrIndex] |= (static_cast<int>(AF) << (gpioPeripheral.global_offset * 4));
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}
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void SHAL_GPIO::setPinMode(PinMode mode) volatile {
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SHAL_GPIO_Peripheral gpioPeripheral = getGPIORegister(m_GPIO_KEY);
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gpioPeripheral.reg->MODER &= ~(0x03 << (2 * gpioPeripheral.global_offset)); //Clear any previous mode
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gpioPeripheral.reg->MODER |= (static_cast<uint8_t>(mode) << (2 * gpioPeripheral.global_offset)); //Set mode based on pinmode bit structure
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}
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void SHAL_GPIO::useAsExternalInterrupt(TriggerMode mode, EXTICallback callback) {
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uint32_t gpioPin = getGPIORegister(m_GPIO_KEY).global_offset; //Use existing structs to get offset
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setPinMode(PinMode::INPUT_MODE); //Explicitly set mode to input
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RCC->APB2ENR |= RCC_APB2ENR_SYSCFGCOMPEN; //Enable EXT, TODO check if this is different across STM32 models
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NVIC_EnableIRQ(getGPIOEXTICR(m_GPIO_KEY).IRQN); //Enable IRQN for pin
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EXTI->IMR |= (1 << gpioPin); //Enable correct EXTI line
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SHAL_EXTIO_Register EXTILineEnable = getGPIOEXTICR(m_GPIO_KEY);
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*EXTILineEnable.EXT_ICR |= EXTILineEnable.mask; //Set bits to enable correct port on correct line TODO Find way to clear bits before
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uint32_t rising_mask = 0x00;
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uint32_t falling_mask = 0x00;
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//Set rising and falling edge triggers based on pin offset (enabled EXTI line)
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switch(mode){
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case TriggerMode::RISING_EDGE:
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rising_mask = 1 << gpioPin;
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break;
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case TriggerMode::FALLING_EDGE:
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falling_mask = 1 << gpioPin;
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break;
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case TriggerMode::RISING_FALLING_EDGE:
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falling_mask = 1 << gpioPin;
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falling_mask = 1 << gpioPin;
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}
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//Set triggers
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EXTI->RTSR |= rising_mask;
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EXTI->FTSR |= falling_mask;
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//Set callback
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registerEXTICallback(m_GPIO_KEY,callback);
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__enable_irq(); //Enable IRQ just in case
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}
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uint16_t SHAL_GPIO::analogRead(ADC_SampleTime sampleTime) {
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SHAL_ADC_Channel channel = getGPIOPortInfo(m_GPIO_KEY).ADCChannel;
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return GPIOManager::getGPIOADC().singleConvertSingle(channel,sampleTime);
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}
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SHAL_GPIO& GPIOManager::get(GPIO_Key key) {
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unsigned int gpioPort = getGPIOPortNumber(key);
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unsigned long gpioPin = getGPIORegister(key).global_offset; //Use existing structs to get offset
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if (m_gpios[gpioPort][gpioPin].m_GPIO_KEY == GPIO_Key::INVALID){
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m_gpios[gpioPort][gpioPin] = SHAL_GPIO(key);
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}
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return m_gpios[gpioPort][gpioPin];
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} |