9.13作业

#include "gpio.h"
extern void printf(const char *fmt, ...);

void delay_ms(int ms)
{
	int i,j;

	for(i = 0; i < ms; i++)
	{
		for(j =0; j<1800; j++)

		{}
	}
}

int main()
{

	//while(1)

	//{
		LED1_init();
		LED1_ON();
	//	delay_ms(1000);
	//	LED1_OFF();

		LED2_init();
		LED2_ON();
	//	delay_ms(1000);
	//	LED2_OFF();

		LED3_init();
		LED3_ON();
	//	delay_ms(1000);
	//	LED3_OFF();

	//}

	return 0;
}

#include "gpio.h"

//LED1
void LED1_init()
{
	RCC_AHB4_ENSETR |= (0x1 << 4);
	GPIOE->MODER &= (~(0x3 << 20));
	GPIOE->MODER |= (0x1 << 20);
	GPIOE->OTYPER &= (~(0x1 << 10));
	GPIOE->OSPEEDR &= (~(0x3 << 20));
	GPIOE->PIPDR &= (~(0x3 << 20));
}

void LED1_ON()
{
	GPIOE->ODR |= (0x1 << 10);
}

void LED1_OFF()
{
	GPIOE->ODR &= (~(0x1 << 10));
}

//LED2
void LED2_init()
{
	RCC_AHB4_ENSETR |= (0x1 << 5);
	GPIOF->MODER &= (~(0x3 << 20));
	GPIOF->MODER |= (0x1 << 20);
	GPIOF->OTYPER &= (~(0x1 << 10));
	GPIOF->OSPEEDR &= (~(0x3 << 20));
	GPIOF->PIPDR &= (~(0x3 << 20));
}

void LED2_ON()
{
	GPIOF->ODR |= (0x1 << 10);
}

void LED2_OFF()
{
	GPIOF->ODR &= (~(0x1 << 10));
}

//LED3
void LED3_init()
{
	RCC_AHB4_ENSETR |= (0x1 << 4);
	GPIOE->MODER &= (~(0x3 << 16));
	GPIOE->MODER |= (0x1 << 16);
	GPIOE->OTYPER &= (~(0x1 << 8));
	GPIOE->OSPEEDR &= (~(0x3 << 16));
	GPIOE->PIPDR &= (~(0x3 << 16));
}

void LED3_ON()
{
	GPIOE->ODR |= (0x1 << 8);
}

void LED3_OFF()
{
	GPIOE->ODR &= (~(0x1 << 8));
}

#ifndef __GPIO_H__
#define __GPIO_H__

#define RCC_AHB4_ENSETR (*(volatile unsigned int*)0x50000A28)

typedef struct{
	volatile unsigned int MODER; 	//00
	volatile unsigned int OTYPER; 	//04
	volatile unsigned int OSPEEDR; 	//08
	volatile unsigned int PIPDR; 	//0C
	volatile unsigned int IDR; 		//10
	volatile unsigned int ODR; 		//14
}edd;

#define GPIOE ((edd*)0x50006000)
#define GPIOF ((edd*)0x50007000)

//LED1
void LED1_init();

void LED1_ON();

void LED1_OFF();

//LED2
void LED2_init();

void LED2_ON();

void LED2_OFF();

//LED3
void LED3_init();

void LED3_ON();

void LED3_OFF();


#endif