3508、2006电机在各种竞赛的使用很普及,其电调驱动方式有PWM和CAN两种,我用的是CAN,在此分享一下个人的学习心得;




程序部分主要分三部分:
STM32F104的CAN通信配置
void CAN1_Configuration(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
CAN_InitTypeDef CAN_InitStructure;
CAN_FilterInitTypeDef CAN_FilterInitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE); //使能PORTA时钟
RCC_APB1PeriphClockCmd(RCC_APB1Periph_CAN1, ENABLE); //使能CAN1时钟
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11| GPIO_Pin_12;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF; //复用功能
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP; //推挽输出
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz; //100MHz
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP; //上拉
GPIO_Init(GPIOA, &GPIO_InitStructure); //初始化PA11,PA12
GPIO_PinAFConfig(GPIOA,GPIO_PinSource11,GPIO_AF_CAN1); //GPIOA11复用为CAN1
GPIO_PinAFConfig(GPIOA,GPIO_PinSource12,GPIO_AF_CAN1); //GPIOA12复用为CAN1
CAN_DeInit(CAN1);
CAN_StructInit(&CAN_InitStructure);
CAN_InitStructure.CAN_TTCM= DISABLE; //非时间触发通信模式
CAN_InitStructure.CAN_ABOM= DISABLE; //软件自动离线管理
CAN_InitStructure.CAN_AWUM= DISABLE; //睡眠模式通过软件唤醒(清除CAN->MCR的SLEEP位)
CAN_InitStructure.CAN_NART= ENABLE; //禁止报文自动传送
CAN_InitStructure.CAN_RFLM= DISABLE; //报文不锁定,新的覆盖旧的
CAN_InitStructure.CAN_TXFP= DISABLE; //优先级由报文标识符决定
CAN_InitStructure.CAN_Mode= CAN_Mode_Normal; //模式设置
CAN_InitStructure.CAN_SJW= CAN_SJW_1tq; //重新同步跳跃宽度(Tsjw)为tsjw+1个时间单位 CAN_SJW_1tq~CAN_SJW_4tq
CAN_InitStructure.CAN_BS1= CAN_BS1_9tq; //Tbs1范围CAN_BS1_1tq ~CAN_BS1_16tq
CAN_InitStructure.CAN_BS2= CAN_BS2_4tq; //Tbs2范围CAN_BS2_1tq ~ CAN_BS2_8tq
CAN_InitStructure.CAN_Prescaler= 3; //分频系数(Fdiv)为brp+1
CAN_Init(CAN1, &CAN_InitStructure); // 初始化CAN1
CAN_FilterInitStructure.CAN_FilterNumber= 0; //过滤器0
CAN_FilterInitStructure.CAN_FilterMode= CAN_FilterMode_IdMask;
CAN_FilterInitStructure.CAN_FilterScale= CAN_FilterScale_32bit; //32位
CAN_FilterInitStructure.CAN_FilterIdHigh= 0x0000; //32位ID
CAN_FilterInitStructure.CAN_FilterIdLow= 0x0000;
CAN_FilterInitStructure.CAN_FilterMaskIdHigh= 0x0000; //32位MASK
CAN_FilterInitStructure.CAN_FilterMaskIdLow= 0x0000;
CAN_FilterInitStructure.CAN_FilterFIFOAssignment= CAN_Filter_FIFO0; //过滤器0关联到FIFO0
CAN_FilterInitStructure.CAN_FilterActivation= ENABLE; //激活过滤器0
CAN_FilterInit(&CAN_FilterInitStructure); //滤波器初始化
CAN_ITConfig(CAN1,CAN_IT_FMP0,ENABLE); //FIFO0消息挂号中断允许
CAN_ITConfig(CAN1,CAN_IT_TME,ENABLE);
NVIC_InitStructure.NVIC_IRQChannel = CAN1_RX0_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 2; // 主优先级为1
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1; // 次优先级为0
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVI

该博客介绍了基于STM32F104的程序,主要包括CAN通信配置、接收数据程序、发送数据函数以及四个电机控制。使用四个麦克纳轮,有可直接控制车子X、Y、Z轴速度的函数,还可获取工程文件。
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