126 lines
4.1 KiB
C++
126 lines
4.1 KiB
C++
//
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// Created by Luca on 8/30/2025.
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//
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#include <cstdio>
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#include "SHAL_GPIO.h"
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#include "SHAL_EXTI_CALLBACK.h"
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#include "SHAL_UART.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 outputDataReg = getGPIOOutputDataRegister(m_GPIO_KEY);
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SHAL_set_bits(outputDataReg.reg,1,0,outputDataReg.offset);
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}
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void SHAL_GPIO::setHigh() {
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auto outputDataReg = getGPIOOutputDataRegister(m_GPIO_KEY);
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SHAL_set_bits(outputDataReg.reg,1,1,outputDataReg.offset);
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}
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void SHAL_GPIO::toggle() volatile {
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auto outputDataReg = getGPIOOutputDataRegister(m_GPIO_KEY);
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SHAL_flip_bits(outputDataReg.reg,1,outputDataReg.offset);
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}
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void SHAL_GPIO::setOutputType(PinType type) volatile {
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auto outputTypeReg = getGPIOOutputTypeRegister(m_GPIO_KEY);
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SHAL_set_bits(outputTypeReg.reg,2,static_cast<uint8_t>(type),outputTypeReg.offset);
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}
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void SHAL_GPIO::setOutputSpeed(OutputSpeed speed) volatile {
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auto outputSpeedReg = getGPIOOutputSpeedRegister(m_GPIO_KEY);
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SHAL_set_bits(outputSpeedReg.reg,2,static_cast<uint8_t>(speed),outputSpeedReg.offset);
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}
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void SHAL_GPIO::setInternalResistor(InternalResistorType type) volatile {
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auto pupdreg = getGPIOPUPDRegister(m_GPIO_KEY);
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SHAL_set_bits(pupdreg.reg,2,static_cast<uint8_t>(type),pupdreg.offset);
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}
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void SHAL_GPIO::setAlternateFunction(GPIO_Alternate_Function AF) volatile {
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auto alternateFunctionReg = getGPIOAlternateFunctionRegister(m_GPIO_KEY);
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SHAL_set_bits(alternateFunctionReg.reg,4,static_cast<uint8_t>(AF),alternateFunctionReg.offset);
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}
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SHAL_Result SHAL_GPIO::setPinMode(PinMode mode) volatile {
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auto pinModeReg = getGPIOModeRegister(m_GPIO_KEY);
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if(mode == PinMode::ANALOG_MODE && getGPIOPortInfo(m_GPIO_KEY).ADCChannel == SHAL_ADC_Channel::NO_ADC_MAPPING){
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char buff[100];
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sprintf(buff, "Error: GPIO pin %d has no valid ADC mapping\r\n", static_cast<uint8_t>(m_GPIO_KEY));
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SHAL_UART2.sendString(buff);
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return SHAL_Result::ERROR;
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}
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SHAL_set_bits(pinModeReg.reg,2,static_cast<uint8_t>(mode),pinModeReg.offset); //Set mode
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return SHAL_Result::OKAY;
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}
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void SHAL_GPIO::useAsExternalInterrupt(TriggerMode mode, EXTICallback callback) {
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/* ---- Connect PB6 to EXTI6 via SYSCFG ---- */
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uint32_t port_b_val = 1; // 0=A, 1=B, 2=C, 3=D, etc.
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SYSCFG->EXTICR[1] &= ~(0xFUL << 8); // Clear EXTI6 bits (bits 8-11)
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SYSCFG->EXTICR[1] |= (port_b_val << 8); // Set EXTI6 to PB6
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/* ---- Configure EXTI line 6 ---- */
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EXTI->IMR1 |= (1UL << 6); // Unmask line 6
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EXTI->RTSR1 |= (1UL << 6); // Rising trigger enable
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EXTI->FTSR1 &= ~(1UL << 6); // Falling trigger disable
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/* ---- Enable NVIC interrupt for EXTI lines [9:5] ---- */
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NVIC_SetPriority(EXTI9_5_IRQn, 2);
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NVIC_EnableIRQ(EXTI9_5_IRQn);
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__enable_irq(); //Enable IRQ just in case
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}
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uint16_t SHAL_GPIO::analogRead(SHAL_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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void SHAL_GPIO::setAlternateFunction(GPIO_Alternate_Function_Mapping AF) volatile {
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setPinMode(PinMode::ALTERNATE_FUNCTION_MODE);
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auto alternateFunctionReg = getGPIOAlternateFunctionRegister(m_GPIO_KEY);
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SHAL_set_bits(alternateFunctionReg.reg,4,static_cast<uint8_t>(AF),alternateFunctionReg.offset);
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}
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uint16_t SHAL_GPIO::digitalRead() {
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auto inputDataReg = getGPIOInputDataRegister(m_GPIO_KEY);
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if((*inputDataReg.reg & (1 << 6)) != 0){
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return 1;
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}
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return 0;
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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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uint8_t gpioPin = getGPIOPinNumber(key);
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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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} |