stm32pwm控制直流减速电机代码
时间: 2023-10-06 16:13:00 浏览: 74
以下是一个简单的使用STM32的PWM模块控制直流减速电机的代码示例:
```c
#include "stm32f10x.h"
#define PWM_PERIOD 999 // PWM周期
int main(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
TIM_OCInitTypeDef TIM_OCInitStructure;
// 使能GPIOB和TIM3的时钟
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB | RCC_APB2Periph_AFIO | RCC_APB2Periph_TIM1, ENABLE);
// 配置PB1为推挽输出,用于驱动电机
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(GPIOB, &GPIO_InitStructure);
// 配置TIM1的基本参数,设置PWM周期为1ms
TIM_TimeBaseStructure.TIM_Period = PWM_PERIOD;
TIM_TimeBaseStructure.TIM_Prescaler = 35; // 72MHz分频,得到2MHz计数频率
TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure);
// 配置TIM1的输出比较通道2为PWM模式,并设置初始占空比为0%
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_Pulse = 0;
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
TIM_OC2Init(TIM1, &TIM_OCInitStructure);
// 启动TIM1
TIM_Cmd(TIM1, ENABLE);
// 设置占空比为50%
TIM_SetCompare2(TIM1, PWM_PERIOD / 2);
while (1)
{
// 这里可以添加其他程序逻辑
}
}
```
此代码示例中使用了STM32的TIM1模块作为PWM输出,通过PB1口驱动直流减速电机。在此基础上,你可以根据需要调整PWM周期、分频系数或占空比等参数。
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