写一个stm32f103rct6做MCU步进电机型号为A3982pwm控制步进电机速度的驱动程序的h文件和c文件定时器TIM2 CH1pwm引脚PB0DIR引脚PB10ENABLE引脚PB11A3982的A相输出引脚P1和P24A3982的B相输出引脚P4和P21

由于缺少具体的步进电机控制细节，以下代码仅提供参考，需要根据具体情况进行修改和完善。

步进电机驱动程序的h文件：

#ifndef __STEP_MOTOR_H #define __STEP_MOTOR_H

#include "stm32f10x.h"

#define DIR_PIN GPIO_Pin_10 #define ENABLE_PIN GPIO_Pin_11 #define PWM_PIN GPIO_Pin_0

void StepMotor_Init(void); void StepMotor_SetSpeed(uint16_t speed); void StepMotor_Move(uint16_t steps, uint8_t direction);

#endif

步进电机驱动程序的c文件：

#include "step_motor.h"

void StepMotor_Init(void) { GPIO_InitTypeDef GPIO_InitStructure; TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure; TIM_OCInitTypeDef TIM_OCInitStructure;

// Enable GPIOB clock
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);

// Enable TIM2 clock
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);

// Configure PB0 as PWM output
GPIO_InitStructure.GPIO_Pin = PWM_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOB, &GPIO_InitStructure);

// Configure PB10 and PB11 as output for DIR and ENABLE signals
GPIO_InitStructure.GPIO_Pin = DIR_PIN | ENABLE_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOB, &GPIO_InitStructure);

// Configure TIM2 for PWM generation
TIM_TimeBaseStructure.TIM_Period = 999; // PWM frequency = 72MHz / (999 + 1) = 72kHz
TIM_TimeBaseStructure.TIM_Prescaler = 71; // PWM frequency = 72MHz / (71 + 1) / (999 + 1) = 1kHz
TIM_TimeBaseStructure.TIM_ClockDivision = 0;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure);

// Configure TIM2 channel 1 for PWM output
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_OC1Init(TIM2, &TIM_OCInitStructure);
TIM_OC1PreloadConfig(TIM2, TIM_OCPreload_Enable);

// Enable TIM2
TIM_Cmd(TIM2, ENABLE);

}

void StepMotor_SetSpeed(uint16_t speed) { TIM_SetCompare1(TIM2, speed); }

void StepMotor_Move(uint16_t steps, uint8_t direction) { uint16_t i;

// Set direction
if (direction == 0)
{
    GPIO_ResetBits(GPIOB, DIR_PIN);
}
else
{
    GPIO_SetBits(GPIOB, DIR_PIN);
}

// Enable motor
GPIO_ResetBits(GPIOB, ENABLE_PIN);

// Move motor
for (i = 0; i < steps; i++)
{
    GPIO_SetBits(GPIOB, PWM_PIN);
    GPIO_ResetBits(GPIOB, PWM_PIN);
}

// Disable motor
GPIO_SetBits(GPIOB, ENABLE_PIN);

}

注：以上代码仅提供参考，具体实现需要根据具体情况进行修改和完善。