附上自己的can2初始化代码
void CAN2_Configuration(void)
{
CAN_InitTypeDef can;
CAN_FilterInitTypeDef can_filter;
GPIO_InitTypeDef gpio;
NVIC_InitTypeDef nvic;
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOB, ENABLE);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_CAN1, ENABLE);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_CAN2, ENABLE);
GPIO_PinAFConfig(GPIOB, GPIO_PinSource13, GPIO_AF_CAN2);
GPIO_PinAFConfig(GPIOB, GPIO_PinSource12, GPIO_AF_CAN2);
gpio.GPIO_Pin = GPIO_Pin_13 | GPIO_Pin_12 ;
gpio.GPIO_Mode = GPIO_Mode_AF;
GPIO_Init(GPIOB, &gpio);
nvic.NVIC_IRQChannel = CAN2_RX0_IRQn;
nvic.NVIC_IRQChannelPreemptionPriority = 0;
nvic.NVIC_IRQChannelSubPriority = 1;
nvic.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&nvic);
CAN_DeInit(CAN2);
CAN_StructInit(&can);
can.CAN_TTCM = DISABLE;
can.CAN_ABOM = DISABLE;
can.CAN_AWUM = DISABLE;
can.CAN_NART = ENABLE;
can.CAN_RFLM = DISABLE;
can.CAN_TXFP = DISABLE;
can.CAN_Mode = CAN_Mode_Normal;
can.CAN_SJW = CAN_SJW_1tq;
can.CAN_BS1 = CAN_BS1_12tq;
can.CAN_BS2 = CAN_BS2_3tq;
can.CAN_Prescaler = 1; //CAN BaudRate 42/(1+9+4)/3=1Mbps
CAN_Init(CAN2, &can);
can_filter.CAN_FilterNumber=14;
can_filter.CAN_FilterMode=CAN_FilterMode_IdMask;
can_filter.CAN_FilterScale=CAN_FilterScale_32bit;
can_filter.CAN_FilterIdHigh=0x0000;
can_filter.CAN_FilterIdLow=0x0000;
can_filter.CAN_FilterMaskIdHigh=0x0000;
can_filter.CAN_FilterMaskIdLow=0x0000;
can_filter.CAN_FilterFIFOAssignment=0;//the message which pass the filter save in fifo0
can_filter.CAN_FilterActivation=ENABLE;
CAN_FilterInit(&can_filter);
CAN_ITConfig(CAN2,CAN_IT_FMP0,ENABLE);
} |
楼主
标题置顶
标题高亮
