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#include "LED.h"
//******************************************************************************************
// User LED = LD2 Green LED = PA.5
//******************************************************************************************
#define LED_PIN 5
void LED_Init(void){
// Enable the peripheral clock of GPIO Port
RCC->AHB2ENR |= RCC_AHB2ENR_GPIOAEN;
// GPIO Mode: Input(00), Output(01), AlterFunc(10), Analog(11, reset)
GPIOA->MODER &= ~(3U<<(2*LED_PIN));
GPIOA->MODER |= 1U<<(2*LED_PIN); // Output(01)
// GPIO Speed: Low speed (00), Medium speed (01), Fast speed (10), High speed (11)
GPIOA->OSPEEDR &= ~(3U<<(2*LED_PIN));
GPIOA->OSPEEDR |= 3U<<(2*LED_PIN); // High speed
// GPIO Output Type: Output push-pull (0, reset), Output open drain (1)
GPIOA->OTYPER &= ~(1U<<LED_PIN); // Push-pull
// GPIO Push-Pull: No pull-up, pull-down (00), Pull-up (01), Pull-down (10), Reserved (11)
GPIOA->PUPDR &= ~(3U<<(2*LED_PIN)); // No pull-up, no pull-down
}
//******************************************************************************************
// Turn LED On
//******************************************************************************************
void LED_On(void){
GPIOA->ODR |= (1UL<<LED_PIN);
}
//******************************************************************************************
// Turn LED Off
//******************************************************************************************
void LED_Off(void){
GPIOA->ODR &= ~(1UL<<LED_PIN);
}
//******************************************************************************************
// Toggle LED
//******************************************************************************************
void LED_Toggle(void){
GPIOA->ODR ^= (1UL<<LED_PIN);
}
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