STM32F入门LED闪烁程序

/*************************************************/

/* PE0作为LED驱动引脚*/

/* SSC___2012.8.20 */

/*************************************************/

#include"stm32f10x_lib.h"

void RCC_Configuration(void);//时钟配置

void NVIC_Configuration(void);//中断向量表配置

void Delay(int i);

int main()

{

GPIO_InitTypeDef GPIO_InitStructure;//GPIO 配置结构体

RCC_Configuration();

NVIC_Configuration();

RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOE,ENABLE);//全能GPIOE 时钟GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;//设置准备配置的GPIO 引脚

GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;//设置GPIO 速度

GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;//设置GPIO 输入、输出模式GPIO_Init(GPIOE,&GPIO_InitStructure);//初始化GPIOE 的0脚配置

while(1)

{

GPIO_SetBits(GPIOE,GPIO_Pin_0);//PE0 置高

Delay(500000);

GPIO_ResetBits(GPIOE,GPIO_Pin_0);//PE0 清除

Delay(500000);

}

}

void RCC_Configuration(void)

{

ErrorStatus HSEStartUpStatus;

RCC_DeInit();

RCC_HSEConfig(RCC_HSE_ON);

HSEStartUpStatus = RCC_WaitForHSEStartUp();

if(HSEStartUpStatus == SUCCESS)

{

FLASH_PrefetchBufferCmd(FLASH_PrefetchBuffer_Enable);

FLASH_SetLatency(FLASH_Latency_2);

RCC_HCLKConfig(RCC_SYSCLK_Div1);

RCC_PCLK2Config(RCC_HCLK_Div1);

RCC_PCLK2Config(RCC_HCLK_Div2);

RCC_PLLConfig(RCC_PLLSource_HSE_Div1,RCC_PLLMul_9);

RCC_PLLCmd(ENABLE);

while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET);

RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);

while(RCC_GetSYSCLKSource() != 0x08);

}

}

void NVIC_Configuration(void)

{

#ifdef VECT_TAB_RAM

/*Set the V ector Table base location at 0x20000000*/

NVIC_SetV ectorTable(NVIC_V ectTab_RAM,0x0);

#else/*VECT_TAB_FLASH*/

/*Set the V ector Table base location as 0x08000000*/

NVIC_SetV ectorTable(NVIC_V ectTab_FLASH,0x0);

#endif

}

void Delay(int i)

{

while((i--)!=0);

}