stm32tim1互补输出pwm
时间: 2023-11-13 21:04:09 浏览: 178
STM32 TIM1互补输出PWM是一种基于STM32 TIM1定时器的PWM输出方式,它可以通过TIM1_CH1和TIM1_CH2N两个引脚输出互补的PWM波形。其中,TIM1_CH2N通道是TIM1_CH2的互补通道,它们的波形完全反向。在初始化PWM的配置之后,需要调用使能PWM的函数才会有PWM的波形。需要注意的是,PWM会有死区,同时如果仅使用PWM的互补通道,记得不要把另一个普通的PWM通道也初始化了。
相关问题
stm32 tim1互补输出
STM32的TIM1定时器可以配置为互补输出模式,以产生两个互补的PWM信号。具体的配置方法如下:
1. 将TIM1的时钟使能。
2. 配置TIM1的基本定时器模式和计数周期。
3. 配置TIM1的输出比较模式,使其产生PWM输出,并设置占空比。
4. 启用TIM1的互补输出模式,以产生两个互补的PWM信号。
下面是一个简单的示例代码:
```
// 使能TIM1的时钟
RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE);
// 配置TIM1的基本定时器模式和计数周期
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
TIM_TimeBaseStructure.TIM_Period = 65535; // 计数周期
TIM_TimeBaseStructure.TIM_Prescaler = 0; // 预分频系数
TIM_TimeBaseStructure.TIM_ClockDivision = 0;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure);
// 配置TIM1的输出比较模式,使其产生PWM输出,并设置占空比
TIM_OCInitTypeDef TIM_OCInitStructure;
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_Pulse = 32767; // 占空比
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
TIM_OC1Init(TIM1, &TIM_OCInitStructure);
// 启用TIM1的互补输出模式,以产生两个互补的PWM信号
TIM_BDTRInitTypeDef TIM_BDTRInitStructure;
TIM_BDTRInitStructure.TIM_OSSRState = TIM_OSSRState_Enable;
TIM_BDTRInitStructure.TIM_OSSIState = TIM_OSSIState_Enable;
TIM_BDTRInitStructure.TIM_LOCKLevel = TIM_LOCKLevel_OFF;
TIM_BDTRInitStructure.TIM_DeadTime = 100; // 死区时间
TIM_BDTRInitStructure.TIM_Break = TIM_Break_Disable;
TIM_BDTRInitStructure.TIM_BreakPolarity = TIM_BreakPolarity_Low;
TIM_BDTRInitStructure.TIM_AutomaticOutput = TIM_AutomaticOutput_Enable;
TIM_BDTRConfig(TIM1, &TIM_BDTRInitStructure);
// 启动TIM1
TIM_Cmd(TIM1, ENABLE);
```
在上面的代码中,TIM1的通道1被配置为产生PWM信号,占空比为50%。TIM1的互补输出模式也被启用,并设置了100个定时器时钟周期的死区时间。这样就可以在TIM1的两个互补输出通道上产生两个互补的PWM信号了。
stm32f030互补输出pwm
好的,针对您的问题,我可以给出以下代码示例:
```c
#include "stm32f0xx.h"
void TIM_Config(void)
{
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
TIM_OCInitTypeDef TIM_OCInitStructure;
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE);
TIM_TimeBaseStructure.TIM_Period = 999; // PWM频率为1kHz
TIM_TimeBaseStructure.TIM_Prescaler = 47; // 定时器时钟为48MHz,分频后为1MHz
TIM_TimeBaseStructure.TIM_ClockDivision = 0;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure);
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM2;
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_Pulse = 500; // 占空比为50%
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
TIM_OC2Init(TIM3, &TIM_OCInitStructure);
TIM_OC2PreloadConfig(TIM3, TIM_OCPreload_Enable);
TIM_Cmd(TIM3, ENABLE);
}
int main(void)
{
TIM_Config();
while (1) {
// do something
}
}
```
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