stm32初始化定时器1
时间: 2023-11-08 19:03:47 浏览: 209
以下是STM32初始化定时器1的示例代码:
首先,需要包含头文件stm32f10x_tim.h和stm32f10x_rcc.h:
```
#include "stm32f10x_tim.h"
#include "stm32f10x_rcc.h"
```
然后,需要定义一个TIM_TimeBaseInitTypeDef类型的结构体变量,用于配置定时器1的基本参数:
```
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
```
接着,需要使能定时器1的时钟,并配置定时器1的时钟分频器:
```
RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE);
TIM_TimeBaseStructure.TIM_Prescaler = 72-1; //时钟分频器,将主时钟分频为1MHz
```
然后,需要配置定时器1的计数模式和自动重载值:
```
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; //计数模式为向上计数
TIM_TimeBaseStructure.TIM_Period = 1000-1; //自动重载值为999,计数器每计满1000次后自动清零
```
接着,需要将配置参数应用到定时器1:
```
TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure);
```
最后,需要使能定时器1:
```
TIM_Cmd(TIM1, ENABLE);
```
完整的初始化代码如下:
```
#include "stm32f10x_tim.h"
#include "stm32f10x_rcc.h"
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
void TIM1_Init()
{
RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE);
TIM_TimeBaseStructure.TIM_Prescaler = 72-1;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseStructure.TIM_Period = 1000-1;
TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure);
TIM_Cmd(TIM1, ENABLE);
}
```
阅读全文