STM32发送控制信号给驱动器，驱动器控制步进电机。
驱动器：控制一个步进电机转动，使用一路PWM信号，和一路方向信号，根据pwm信号的频率控制步进电机的转速，方向信号控制步进转动的方向。- void SteppingMotor_Config(void)
- {
- GPIO_InitTypeDef GPIO_InitStructure;
- tiM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
- TIM_OCInitTypeDef TIM_OCInitStructure;
- RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);
- RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
- GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0; //TIM2的1通道输出pwm波形控制电机，对应PA0口
- GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
- GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
- GPIO_Init(GPIOA,&GPIO_InitStructure);
- GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1 | GPIO_Pin_2; //步进电机正反转和使能控制口
- GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
- GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
- GPIO_Init(GPIOA,&GPIO_InitStructure);
- //定义PWM频率
- TIM_TimeBaseStructure.TIM_Prescaler =719; //预分频值
- TIM_TimeBaseStructure.TIM_Period =99; //重装值，这里输出的pwm频率为1KHZ
- TIM_TimeBaseStructure.TIM_ClockDivision = 0x0;
- TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
- TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure); //时基单元配置
- //设定占空比
- TIM_OCStructInit(& TIM_OCInitStructure);
- TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
- TIM_OCInitStructure.TIM_Pulse =50; //%50的占空比
- TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
- TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
- TIM_OC1Init(TIM2, &TIM_OCInitStructure);
- TIM_OC1PreloadConfig(TIM2, TIM_OCPreload_Enable);
- TIM_ARRPreloadConfig(TIM2,ENABLE);
- TIM_Cmd(TIM2, ENABLE);
- TIM_CtrlPWMOutputs(TIM2, ENABLE);
- }
[color=rgb(51, 102, 153) !important]复制代码
- void SteppingMotorControl(u8 dir) //正反转控制
- {
- if(0==dir)
- {
- GPIO_ResetBits(GPIOA,GPIO_Pin_1); //反转
- }
- else
- {
- GPIO_SetBits(GPIOA,GPIO_Pin_1); //正转
- }
- }
- void EnableSteppingMotor(void)
- {
- GPIO_ResetBits(GPIOA,GPIO_Pin_2);
- }
- void DisableSteppingMotor(void)
- {
- GPIO_SetBits(GPIOA,GPIO_Pin_2);
- }
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我来支持一下呵呵！嵌入式培训www.arm8.net
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赞，来学习一下 
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可以的hhhhhhhhhhhhhhhhhhhhhhh
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我使用按键中断通过I/O口发送高低电平给驱动板CW端，为什么改变不了电机的转动方向啊，求大神指教
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/5 
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