因此,如果将72000传入“HAL_SYSTICK_Config()”函数,则SysTick从72000减到0,花费时间为1毫秒,创建函数“SysTickInit()”初始化系统滴答定时器,如代码段 11.3.3 所示。 代码段 11.3.3 初始化SysTick(driver_systick.c) /* * 函数名:void SysTickInit(uint32_t cycle) * 输入参数:cycle,设置系统滴答时钟周...
*/intmain(void){/* LED 端口初始化 */LED_GPIO_Config();/* 配置SysTick 为10us中断一次 */SysTick_Init();// for(;;)// {// LED1( ON );// Delay_us(100000); // 100000 * 10us = 1000ms// //Delay_ms(100);// LED1( OFF );/// LED2( ON );// Delay_us(100000); // 1...
一般值72*/void sys_tick_init(u8 SYSCLK){// 设置时钟源, 使用系统时钟的八分频 SysTick_CLKSourceConfig(SysTick_CLKSource_HCLK_Div8); // 72 / 8 = 9 1us跳到次数 tick_us =
voiddelay_init(u8SYSCLK)// 系统时钟频率,和HCLK是一样的{#ifSYSTEM_SUPPORT_OS//ucos相关代码,先跳过u32 reload;#endifSysTick_CLKSourceConfig(SysTick_CLKSource_HCLK_Div8);fac_us=SYSCLK/8;//设置频率#ifSYSTEM_SUPPORT_OS//ucos相关代码,先跳过reload=SYSCLK/8;reload*=1000000/delay_ostickspersec;f...
STM32 SysTick两种定时设计 方案1: voidSysTick_Init(void){if(SysTick_Config(SystemCoreClock /100000))// SystemCoreClock / 100000 重装载值为720,CLK为72M,所以720/720M=10us中断一次{/* Capture error */while(1); } }voidDelay_10us(__IO u32 nTime){...
SysTick_GetCounter 获取 SysTick 计数器的值; SysTick_GetFlagStatus 检查指定的 SysTick 标志位设置与否。 2.4.1main文件分析 intmain(void) { /* LED 端口初始化 */ LED_GPIO_Config(); /* 配置SysTick 为10us中断一次 */ SysTick_Init(); ...
STM32的SYSTICK_Init（）配置 void SYSTICK_Init(void){ /* SysTick end of count event each 1ms with input clock equal to 4.5MHz (HCLK/8, default)SysTick_SetReload(4500);/* Enable SysTick interrupt SysTick_ITConfig(ENABLE);/* Enable the SysTick Counter SysTick_CounterCmd(SysTick_Counter_...
RT-Thread系统bsp的stm32F10x中关于Systick的初始化:在启动文件中其实已经一定了SystemInit();其中就已经定义了32的AHB时钟、APB1时钟和APB2时钟的大小。 RTT中 [cpp]view plain copy /* Configure the SysTick */ SysTick_Config( SystemCoreClock / RT_TICK_PER_SECOND ); //RT_TICK_PER_SECOND =100 [...
9. function SysTick_Config is not included. In this case, the file device.h 10. must contain a vendor-specific implementation of this function. 11. */12.__STATIC_INLINE uint32_tSysTick_Config(uint32_t ticks)13.{14.if((ticks-1UL)>SysTick_LOAD_RELOAD_Msk)15.{16.return(1UL);/* ...
SysTick_Config(TicksNumb)各个函数的源码如下所示：__weak HAL_StatusTypeDef HAL_InitTick(uint32_t ...