stm32f103c8t6驱动电机代码

以下是基于STM32F103C8T6的PWM驱动直流电机的示例代码：

#include "stm32f10x.h"

#define PWM_PIN GPIO_Pin_0
#define PWM_PORT GPIOA
#define PWM_TIM TIM2

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

  // 使能PWM时钟
  RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);
  // 使能GPIO时钟
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);

  // 配置PWM引脚
  GPIO_InitStructure.GPIO_Pin = PWM_PIN;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_Init(PWM_PORT, &GPIO_InitStructure);

  // 配置PWM时钟
  TIM_TimeBaseStructure.TIM_Period = 3999; // PWM周期
  TIM_TimeBaseStructure.TIM_Prescaler = 71; // PWM时钟分频
  TIM_TimeBaseStructure.TIM_ClockDivision = 0;
  TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
  TIM_TimeBaseInit(PWM_TIM, &TIM_TimeBaseStructure);

  // 配置PWM输出通道
  TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
  TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
  TIM_OCInitStructure.TIM_Pulse = 0; // PWM占空比
  TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
  TIM_OC1Init(PWM_TIM, &TIM_OCInitStructure);
  TIM_OC1PreloadConfig(PWM_TIM, TIM_OCPreload_Enable);

  // 启动PWM时钟
  TIM_Cmd(PWM_TIM, ENABLE);
}

void setMotorPWM(uint16_t pulse) {
  TIM_OCInitTypeDef TIM_OCInitStructure;

  TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
  TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
  TIM_OCInitStructure.TIM_Pulse = pulse;
  TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;

  TIM_OC1Init(PWM_TIM, &TIM_OCInitStructure);
  TIM_OC1PreloadConfig(PWM_TIM, TIM_OCPreload_Enable);
}

int main(void) {
  PWM_Motor_Init();

  while(1) {
    setMotorPWM(2000); // 设置PWM占空比为50%
  }
}

其中，`PWM_Motor_Init()`函数用于初始化PWM引脚和时钟，`setMotorPWM()`函数用于设置PWM占空比，`main()`函数中的`while`循环用于不断设置PWM占空比以驱动电机。

注意，这只是示例代码，具体的PWM时钟分频、PWM周期和PWM占空比需要根据实际电机的参数进行调整。同时，电机的正反转需要通过控制PWM占空比的正负来实现。