STM32F103ZET6定时器TIM1的PA8/PA9/PA10/PA11输出四路PWM标准库代码
时间: 2023-08-03 16:02:46 浏览: 186
以下是使用标准库在STM32F103ZET6上配置TIM1的代码,以实现四路PWM输出到PA8、PA9、PA10和PA11引脚:
```c
#include "stm32f10x.h"
void TIM1_PWM_Init(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
TIM_OCInitTypeDef TIM_OCInitStructure;
// 使能TIM1和GPIOA的时钟
RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1 | RCC_APB2Periph_GPIOA, ENABLE);
// 配置PA8、PA9、PA10和PA11引脚为复用推挽输出模式
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10 | GPIO_Pin_11;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);
// 配置TIM1的基本参数
TIM_TimeBaseStructure.TIM_Period = 999; // 设置周期为1000个计数单位
TIM_TimeBaseStructure.TIM_Prescaler = 71; // 设置预分频值,得到计数频率为72MHz / (71+1) = 1MHz
TIM_TimeBaseStructure.TIM_ClockDivision = 0;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure);
// 配置TIM1的通道1输出参数
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_Pulse = 0; // 设置初始占空比为0
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
TIM_OC1Init(TIM1, &TIM_OCInitStructure);
TIM_OC1PreloadConfig(TIM1, TIM_OCPreload_Enable);
// 配置TIM1的通道2输出参数
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_Pulse = 0; // 设置初始占空比为0
TIM_OC2Init(TIM1, &TIM_OCInitStructure);
TIM_OC2PreloadConfig(TIM1, TIM_OCPreload_Enable);
// 配置TIM1的通道3输出参数
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_Pulse = 0; // 设置初始占空比为0
TIM_OC3Init(TIM1, &TIM_OCInitStructure);
TIM_OC3PreloadConfig(TIM1, TIM_OCPreload_Enable);
// 配置TIM1的通道4输出参数
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_Pulse = 0; // 设置初始占空比为0
TIM_OC4Init(TIM1, &TIM_OCInitStructure);
TIM_OC4PreloadConfig(TIM1, TIM_OCPreload_Enable);
// 使能TIM1
TIM_Cmd(TIM1, ENABLE);
}
```
你可以在你的主函数中调用`TIM1_PWM_Init()`函数来初始化TIM1和GPIO引脚,并使用`TIM_SetCompareX()`函数来设置通道X的占空比(其中X为1、2、3或4)。
请确保在编译和链接过程中包含必要的头文件,并将代码适配到你的开发环境。
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