1/*2* @brief Initialize and start the SysTick counter and its interrupt.3* @param ticks number of ticks between two interrupts4* @return 1 = failed, 0 = successful5* Initialise the system tick timer and its interrupt and start the6* system tick timer / counter in free running mode to...
一、SysTick的时钟来源 我们先来看看 STM32 的时钟树 The RCC feeds the Cortex System Timer (SysTick) external clock with the AHB clock(HCLK) divided by 8. The SysTick can work either with this clock or with the Cortex clock(HCLK), configurable in the SysTick Control and Status Register. ...
1、如果只是想用systick来作为延时用,程序不想被中断打断,就只需要使能systick而不用开启systick中断,调用 LL_Init1msTick 即可 void LL_Init1msTick(uint32_t HCLKFrequency) ---> LL_InitTick(HCLKFrequency, 1000U); ---> __STATIC_INLINE void LL_InitTick(uint32_t HCLKFrequency, uint32_t Ticks)...
Cortex-M3 在内核部分包含了一个简单的定时器—— SysTick timer(简化移植)。 在STM32 中 SysTick 以 HCLK(AHB 时钟)或 HCLK/8 作为运行时钟。 HAL 中,某些外设超时判断(比如 I2C、 SPI、 SDIO 等),精确延时(精度为 1ms),用 SysTick,但操作系统里,需使用 SysTick 来提供系统时基, 那么就冲突了。 原因...
The function initializes the System Timer and its interrupt, and starts the System Tick Timer. Counter is in free running mode to generate periodic interrupts. \param [in] ticks Number of ticks between two interrupts. \return 0 Function succeeded. ...
我先来看看 STM32 的时钟树 The RCC feeds the Cortex Sy stemTimer (SysTick) external clock with the AHB clock(HCLK) divided by 8.The SysTick can work either with this clock or with the Cortex clock(HCLK), configurable in the Sy sTick Control and Status Register. ...
__STATIC_INLINE uint32_t SysTick_Config(uint32_t ticks)函数就是“The function initializes the System Timer and its interrupt, and starts the System Tick Timer. Counter is in free running mode to generate periodic interrupts.”初始化SysTick和中断,开启定时器。
STM32-ARM汇编语言零基础教程(五)STM32-The System Tick Timer-5.2 汇编代码相关SysTick寄存器的符号名称, 视频播放量 94、弹幕量 0、点赞数 2、投硬币枚数 1、收藏人数 2、转发人数 0, 视频作者 钱呈似金, 作者简介 ,相关视频:Arm汇编03_寄存器和指令基本格式,如何新
代码段 11.3.1 SysTick配置函数(stm32f1xx_hal_cortex.c) /** * @brief Initializes the System Timer and its interrupt, and starts the System Tick Timer. * Counter is in free running mode to generate periodic interrupts. * @param TicksNumb: Specifies the ticks Number of ticks between two ...
这是一个24位的系统节拍定时器system tick timer,SysTick,具有自动重载和溢出中断功能，所有基于Cortex_...