这是基于stm32f103c8板子的小车的电机驱动的keil工程源代码,这里是直流电机,由B6,B7,B8,B9四个管口输出PWM波来控制,前两个管口与B电机相关,后两个与A电机相关,两个口的PWM波占空比不同,产生压差,使电机转动
单片机源程序如下:
- #include "PWM.h"
- #include "stm32f10x.h"
- void TIM4_Init(void)
- {
- TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
- GPIO_InitTypeDef GPIO_InitStructure;
- TIM_OCInitTypeDef TIM_OCInitStructure;
-
- RCC_APB2PeriphClockCmd( RCC_APB2Periph_GPIOB , ENABLE);
- //GPIO_InitTypeDef GPIO_InitStructure;
- // GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6|GPIO_Pin_7|GPIO_Pin_8|GPIO_Pin_9;
- // GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
- // GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
- // GPIO_Init(GPIOB, &GPIO_InitStructure);
- // GPIO_SetBits(GPIOB , GPIO_Pin_6);
- // GPIO_SetBits(GPIOB , GPIO_Pin_7);
- // GPIO_SetBits(GPIOB , GPIO_Pin_8);
- // GPIO_SetBits(GPIOB , GPIO_Pin_9);
-
- GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6;//对应BIN2
- GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
- GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
- GPIO_Init(GPIOB, &GPIO_InitStructure);
-
- GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7;//对应BIN1
- GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
- GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
- GPIO_Init(GPIOB, &GPIO_InitStructure);
-
- GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;//对应AIN2
- GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
- GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
- GPIO_Init(GPIOB, &GPIO_InitStructure);
-
- GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;//对应AIN1
- GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
- GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
- GPIO_Init(GPIOB, &GPIO_InitStructure);
-
- RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM4 , ENABLE);
- //TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
- TIM_TimeBaseStructure.TIM_Prescaler = 0;
- TIM_TimeBaseStructure.TIM_Period = 5000 ;
- TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1 ;//TIM_CKD_DIV1;
- TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
- TIM_TimeBaseInit(TIM4, &TIM_TimeBaseStructure);
- //TIM_OCInitTypeDef TIM_OCInitStructure;
- TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
- TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
- TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Enable;
- TIM_OCInitStructure.TIM_Pulse = 2500;
- TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low;
- TIM_OCInitStructure.TIM_OCNPolarity = TIM_OCNPolarity_High;
- TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Set;
- TIM_OCInitStructure.TIM_OCNIdleState = TIM_OCIdleState_Reset;
- TIM_OC1Init(TIM4 , &TIM_OCInitStructure);
- TIM_OC1PreloadConfig(TIM4 , TIM_OCPreload_Enable);
- TIM_ARRPreloadConfig(TIM4 , ENABLE);
- TIM_CtrlPWMOutputs(TIM4 , ENABLE);
- TIM_Cmd(TIM4 , ENABLE);
-
- TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
- TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
- TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Enable;
- TIM_OCInitStructure.TIM_Pulse = 0;
- TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low;
- TIM_OCInitStructure.TIM_OCNPolarity = TIM_OCNPolarity_High;
- TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Set;
- TIM_OCInitStructure.TIM_OCNIdleState = TIM_OCIdleState_Reset;
- TIM_OC2Init(TIM4 , &TIM_OCInitStructure);
- TIM_OC2PreloadConfig(TIM4 , TIM_OCPreload_Enable);
- TIM_ARRPreloadConfig(TIM4 , ENABLE);
- TIM_CtrlPWMOutputs(TIM4 , ENABLE);
- TIM_Cmd(TIM4 , ENABLE);
-
- TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
- TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
- TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Enable;
- TIM_OCInitStructure.TIM_Pulse = 2500;
- TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low;
- TIM_OCInitStructure.TIM_OCNPolarity = TIM_OCNPolarity_High;
- TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Set;
- TIM_OCInitStructure.TIM_OCNIdleState = TIM_OCIdleState_Reset;
- TIM_OC3Init(TIM4 , &TIM_OCInitStructure);
- TIM_OC3PreloadConfig(TIM4 , TIM_OCPreload_Enable);
- TIM_ARRPreloadConfig(TIM4 , ENABLE);
- TIM_CtrlPWMOutputs(TIM4 , ENABLE);
- TIM_Cmd(TIM4 , ENABLE);
-
- TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
- TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
- TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Enable;
- TIM_OCInitStructure.TIM_Pulse = 0;
- TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low;
- TIM_OCInitStructure.TIM_OCNPolarity = TIM_OCNPolarity_High;
- TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Set;
- TIM_OCInitStructure.TIM_OCNIdleState = TIM_OCIdleState_Reset;
- TIM_OC4Init(TIM4 , &TIM_OCInitStructure);
- TIM_OC4PreloadConfig(TIM4 , TIM_OCPreload_Enable);
- TIM_ARRPreloadConfig(TIM4 , ENABLE);
- TIM_CtrlPWMOutputs(TIM4 , ENABLE);
- TIM_Cmd(TIM4 , ENABLE);
- //TIM1->CCR1 = 200;
-
- }
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