1 files changed, 49 insertions, 0 deletions
diff --git a/project/Core/Src/LED.c b/project/Core/Src/LED.c
new file mode 100644
index 0000000..8b1b9b2
--- /dev/null
+++ b/project/Core/Src/LED.c
@@ -0,0 +1,49 @@
+#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);
+}