STM32F407ZGT6通过STM32CUBEMX设置PWM的输出定时器,.c和.h文件如何写才能驱动TB6612电机转动
时间: 2024-09-15 07:07:18 浏览: 77
首先,你需要了解STM32F407ZGT6的TIM2定时器可以用于PWM输出,并且TB6612是一款双H-Bridge电机驱动器,通常需要两路独立的PWM信号控制它的两个方向。
在CUBEMX上配置好PWM输出后,你需要创建对应的.c和.h头文件来进行编码:
1. **Timer PWM初始化.h文件** (例如:`stm32f4_pwm_driver.h`)
```c
#ifndef STM32F4_PWM_H_
#define STM32F4_PWM_H_
#include "stm32f4xx_hal.h"
typedef enum {
PWM_CHANNEL_A = 0,
PWM_CHANNEL_B = 1,
} PWM_Channel_TypeDef;
void PWM_Init(TIM_HandleTypeDef* htim, PWM_Channel_TypeDef channel);
void PWM_SetDutyCycle(TIM_HandleTypeDef* htim, PWM_Channel_TypeDef channel, uint16_t duty_cycle);
void PWM_EnableChannel(TIM_HandleTypeDef* htim, PWM_Channel_TypeDef channel);
void PWM_DisableChannel(TIM_HandleTypeDef* htim, PWM_Channel_TypeDef channel);
#endif // STM32F4_PWM_H_
```
2. **Timer PWM初始化.c文件** (例如:`stm32f4_pwm_driver.c`)
```c
#include "stm32f4_pwm_driver.h"
#include "stm32f4xx_hal_tim.h"
void PWM_Init(TIM_HandleTypeDef* htim, PWM_Channel_TypeDef channel) {
TIM_MasterConfigTypeDef sMasterConfig;
htim->Instance = TIM2; // 使用TIM2实例
if(channel == PWM_CHANNEL_A) {
htim->CR1 &= ~TIM_CR1_CEN; // 清除通道A的使能位
htim->CCR1 = 0; // 初始化通道A的比较寄存器
} else {
htim->CR1 &= ~TIM_CR1_CENB; // 清除通道B的使能位
htim->CCR2 = 0; // 初始化通道B的比较寄存器
}
htim->PSC = ((SystemCoreClock / (htim->ARR + 1)) - 1); // 设置预分频器值
sMasterConfig.MasterOutputTrigger = TIM_TRGO_UPDATE;
sMasterConfig.MasterSlaveMode = TIM_MS_MASTER_DEMODULATION;
HAL_TIMEx_MasterConfigSynchronization(htim, &sMasterConfig);
HAL_TIM_PWM_Init(htim); // 初始化PWM模式
}
void PWM_SetDutyCycle(TIM_HandleTypeDef* htim, PWM_Channel_TypeDef channel, uint16_t duty_cycle) {
if(channel == PWM_CHANNEL_A) {
htim->CCR1 = duty_cycle; // 设置通道A的周期占空比
} else {
htim->CCR2 = duty_cycle; // 设置通道B的周期占空比
}
}
void PWM_EnableChannel(TIM_HandleTypeDef* htim, PWM_Channel_TypeDef channel) {
if(channel == PWM_CHANNEL_A) {
htim->CR1 |= TIM_CR1_CEN; // 启动通道A
} else {
htm->CR1 |= TIM_CR1_CENB; // 启动通道B
}
}
void PWM_DisableChannel(TIM_HandleTypeDef* htim, PWM_Channel_TypeDef channel) {
if(channel == PWM_CHANNEL_A) {
htim->CR1 &= ~TIM_CR1_CEN; // 停止通道A
} else {
htm->CR1 &= ~TIM_CR1_CENB; // 停止通道B
}
}
```
现在你可以按照上述结构,在你的主应用.c文件中包含这个.h头文件,然后根据需要调用`PWM_Init()`, `PWM_SetDutyCycle()`, `PWM_EnableChannel()`, 和 `PWM_DisableChannel()` 函数来设置定时器、设置电机通道的频率和占空比,并启动或停止相应通道的PWM信号了。
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