STM32控制直流电机

【实例简介】主要用来控制输出PWM，然后达到控制电机速度
【实例截图】
【核心代码】void Tim4_Config(u32 arr,u16 psc)
{
    TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
    TIM_OCInitTypeDef TIM_OCInitStructure; 
    RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM4,ENABLE);
    
    TIM_TimeBaseStructure.TIM_Prescaler=psc;
TIM_TimeBaseStructure.TIM_CounterMode=TIM_CounterMode_Up;
TIM_TimeBaseStructure.TIM_Period=arr;
TIM_TimeBaseStructure.TIM_ClockDivision=TIM_CKD_DIV4;
    TIM_TimeBaseStructure.TIM_RepetitionCounter = 0;
    
    TIM_TimeBaseInit(TIM4,&TIM_TimeBaseStructure);
    TIM_ARRPreloadConfig(TIM4,ENABLE);
    TIM_OCStructInit(&TIM_OCInitStructure);
    
    TIM_OCInitStructure.TIM_Pulse=0;
    TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM2;
    TIM_OCInitStructure.TIM_OutputState=TIM_OutputState_Enable;
    TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low;
    TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Set;
    
    TIM_OC4Init(TIM4, &TIM_OCInitStructure);
    TIM_OC4PreloadConfig(TIM4, TIM_OCPreload_Enable); 
    
    TIM_OC3Init(TIM4, &TIM_OCInitStructure);
    TIM_OC3PreloadConfig(TIM4, TIM_OCPreload_Enable);
    
    TIM_Cmd(TIM4, ENABLE); 
    TIM_CtrlPWMOutputs(TIM4, ENABLE);
}
void Tim3_Config(u32 arr,u16 psc)
{
    TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
    TIM_OCInitTypeDef TIM_OCInitStructure; 
    RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3,ENABLE);
    
    TIM_TimeBaseStructure.TIM_Prescaler=psc;
TIM_TimeBaseStructure.TIM_CounterMode=TIM_CounterMode_Up;
TIM_TimeBaseStructure.TIM_Period=arr;
TIM_TimeBaseStructure.TIM_ClockDivision=TIM_CKD_DIV4;
    TIM_TimeBaseStructure.TIM_RepetitionCounter = 0;
    
    TIM_TimeBaseInit(TIM3,&TIM_TimeBaseStructure);
    TIM_ARRPreloadConfig(TIM3,ENABLE);
    TIM_OCStructInit(&TIM_OCInitStructure);
    
    TIM_OCInitStructure.TIM_Pulse=0;
    TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM2;
    TIM_OCInitStructure.TIM_OutputState=TIM_OutputState_Enable;
    TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low;
    TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Set;
    
    TIM_OC4Init(TIM3, &TIM_OCInitStructure);
    TIM_OC4PreloadConfig(TIM3, TIM_OCPreload_Enable); 
    
    TIM_OC3Init(TIM3, &TIM_OCInitStructure);
    TIM_OC3PreloadConfig(TIM3, TIM_OCPreload_Enable);
    
    TIM_Cmd(TIM3, ENABLE); 
    TIM_CtrlPWMOutputs(TIM3, ENABLE);
}