STM32 v3.5固件库systick ms延时

/*初始化时钟*/

void Init_SysTick(void)
{
/* Disable SysTick Counter */
SysTick_CounterCmd(SysTick_Counter_Disable);

/* Disable the SysTick Interrupt */
SysTick_ITConfig(DISABLE);

/* Configure HCLK clock as SysTick clock source */
SysTick_CLKSourceConfig(SysTick_CLKSource_HCLK_Div8);

/* SysTick interrupt each 1000 Hz with HCLK equal to 72MHz */
SysTick_SetReload(9000);

/* Enable the SysTick Interrupt */
SysTick_ITConfig(ENABLE);
}

__IO uint32_t TimingDelay;

void delay_ms(__IO uint32_t nTime)
{
/* Enable the SysTick Counter */
SysTick_CounterCmd(SysTick_Counter_Enable);

TimingDelay = nTime;

while(TimingDelay != 0);

/* Disable SysTick Counter */
SysTick_CounterCmd(SysTick_Counter_Disable);

/* Clear SysTick Counter */
SysTick_CounterCmd(SysTick_Counter_Clear);
}

/*stm32f10x_it.c中的void SysTick_Handler(void)函数改为*/
extern __IO uint32_t TimingDelay;

void SysTick_Handler(void)
{
if (TimingDelay != 0x00)
{
TimingDelay--;
}
}

/*用法，延时1秒*/
delay_ms(1000);

/*初始化时钟*/

void Init_SysTick(void)
{
if(SysTick_Config(SystemCoreClock / 1000)) //注意：3.5库中SystemFrequency 被SystemCoreClock 取代。
while(1);
}

/*延时1ms函数*/

__IO uint32_t TimingDelay;

void delay_ms(__IO uint32_t nTime)
{
TimingDelay = nTime;
while(TimingDelay != 0);
}

/*stm32f10x_it.c中的void SysTick_Handler(void)函数改为*/

extern __IO uint32_t TimingDelay;

void SysTick_Handler(void)
{
if (TimingDelay != 0x00)
{
TimingDelay--;
}
}

/*用法，延时1秒*/

delay_ms(1000);