#include "stm32f10x.h"

void Delay_Nms(unsigned int n)
{
SysTick->LOAD=9000*n;//裝入初始值，定時(shí)時(shí)間為1/(72M/8) *9000 s
SysTick->CTRL=0x00000001; //設(shè)置始終源為系統(tǒng)始終八分頻，并打開(kāi)定時(shí)器
while(!(SysTick->CTRL&0x00010000));//等待遞減計(jì)數(shù)器減到0
SysTick->CTRL=0x00000000;//關(guān)閉定時(shí)器
}

int main(void)
{
SystemInit();//配置系統(tǒng)時(shí)鐘
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE);//使能APB2外設(shè)時(shí)鐘
GPIO_InitTypeDef GPIO_InitStructure;//定義I/O口結(jié)構(gòu)體
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;//推挽輸出
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOC, &GPIO_InitStructure);

GPIO_ResetBits(GPIOC, GPIO_Pin_6);


while(1)
{

GPIO_SetBits(GPIOC, GPIO_Pin_6);
Delay_Nms(1000);//延時(shí)1s
GPIO_ResetBits(GPIOC, GPIO_Pin_6);
Delay_Nms(1000);
}
}

//以下是報(bào)錯(cuò)函數(shù)
#ifdefUSE_FULL_ASSERT
void assert_failed(uint8_t* file, uint32_t line)
{
while (1)
{
}
}
#endif