已知STM32CUBEMX配置好STM32F407ZGT6的pwm的输出定时器1和定时器8,如何初始化PWM的.c和.h文件

在STM32F407ZGT6上使用STM32CubeMX配置好PWM输出后，初始化PWM功能通常需要在`.c`文件中编写相应的驱动函数，并在`.h`文件中声明该函数以便供其他模块引用。以下是一个简单的步骤指南：

1. **创建.h文件** (例如: `stm32f4_pwm.h`):

#ifndef STM32F4_PWM_H
#define STM32F4_PWM_H

#include "stm32f4xx_hal.h"

// PWM结构体声明
typedef struct {
    TIM_HandleTypeDef htim;
    GPIO_TypeDef* gpioBase; // GPIOB for Timer1 or GPION for Timer8
} PWM_HandleTypeDef;

extern PWM_HandleTypeDef pwmHandle[TIM_TIM1+NBR_OF_TIMERS]; // NBR_OF_TIMERS通常为2

void InitializePWM(TIM_TypeDef *timer);
void SetPWMFrequency(uint32_t channel, uint32_t freq);
void SetPWM DutyCycle(uint32_t channel, uint16_t dutyCycle);

#endif // STM32F4_PWM_H

2. **创建.c文件** (例如: `stm32f4_pwm.c`):

#include "stm32f4_pwm.h"

static void PWM_MspInit(TIM_HandleTypeDef* htim) {
    GPIO_InitTypeDef GPIO_InitStruct;
    
    // 配置GPIO
    GPIO_InitStruct.Pin = ...; // 根据Timer1或Timer8的引脚确定
    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
    GPIO_InitStruct.Alternate = GPIO_AF0_TIM1; // 或GPIO_AF1_TIM8
    HAL_GPIO_Init(htim->Instance->GPIOx, &GPIO_InitStruct);
    
    // 配置TIM
    htim->.Instance->CR1 &= ~(TIM_CR1_CEN | TIM_CR1_DIR); // 禁止时钟并清方向
    htim->Instance->CR2 = 0; // 清除寄存器
    htim->Instance->CCR1 = 0; // 初始化占空比为0
}

void InitializePWM(TIM_TypeDef *timer) {
    GPIO_TypeDef* gpioBase = ...; // Timer1对应GPIOB, Timer8对应GPION
    PWM_HandleTypeDef* htim = &pwmHandle[timer - TIM_TIM1];
    htim->htim.Instance = timer;
    htim->gpioBase = gpioBase;

    htim->htim.Init.Prescaler = ...; // 根据需求设置计数器预分频
    htim->htim.Init.CounterMode = TIM_COUNTERMODE_UP;
    htim->htim.Init.Period = ...; // 设置周期
    htim->htim.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
    HAL_TIM_Base_Init(&htim->htim);

    // 链接时钟和中断
    __HAL_RCC_TIMx_CLK_ENABLE(); // 先使能时钟
    HAL_TIM_Base_MspInit(&htim->htim);
}

// 函数用于设置PWM频率和Duty Cycle
void SetPWMFrequency(uint32_t channel, uint32_t freq) {
    ...
}
void SetPWM DutyCycle(uint32_t channel, uint16_t dutyCycle) {
    ...
}

// 示例：启动PWM通道
void StartPWM(uint32_t channel) {
    PWM_HandleTypeDef* htim = &pwmHandle[channel - 1];
    htim->htim.Instance->CR1 |= TIM_CR1_CEN; // 启动定时器
}