[mw_shl_code=c,true]static __IO uint32_t TimingDelay; void Delay(__IO uint32_t nTime) { TimingDelay = nTime; while(TimingDelay != 0); } void SysTick_Handler(void) { if (TimingDelay != 0x00) { TimingDelay--; } } int main(void) { … if (SysTick_Config(SystemCoreClock / 1000)) //systick时钟为HCLK，中断时间间隔1ms { while (1); } while(1) { … Delay(200);//2ms … } } [/mw_shl_code]

回复【13楼】逍遥winter:
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读CTRL,可以清除中断标志

回复【14楼】Admin:
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你好，我用的是3.5的库，为什么完全参照你这个程序去点亮一个灯闪灭不行？
[mw_shl_code=c,true] #include "stm32f10x.h" unsigned int TimingDelay; void Delay(unsigned int x) { TimingDelay=x; while(TimingDelay!=0); } void TimingDelay_Decrement(void) { if (TimingDelay != 0x00) { TimingDelay--; } } int main(void) { SystemInit();//配置系统时钟 RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE);//使能APB2外设时钟 RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB | RCC_APB2Periph_GPIOC | RCC_APB2Periph_GPIOD,ENABLE);//IO口使能设置 GPIO_InitTypeDef GPIO_InitStructure; //定义I/O口结构体 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOC, &GPIO_InitStructure); GPIO_ResetBits(GPIOC, GPIO_Pin_6); if (SysTick_Config(72000000 / 100)) //每10ms中断一次 { /* Capture error */ while (1); } while(1) { GPIO_SetBits(GPIOC, GPIO_Pin_6); Delay(100); //100*10ms=1s GPIO_ResetBits(GPIOC, GPIO_Pin_6); Delay(100); //100*10ms=1s } } [/mw_shl_code]

楼主在吗，为什么用寄存器的程序时，会有一个错误，初始化的错误

回复【18楼】逆鳞:
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默认是最低的,最高的貌似库函数有一个systick中断优先级配置的函数,你百度一下吧.