CAN 扩展帧

只看该作者 · 2013-7-16 13:17

最近写了个stm32 can的扩展帧收发程序通过示波器看还是有数据的但是不知道为什么就是接收不到
    CAN_FilterInitStructure.CAN_FilterNumber = 0;
    CAN_FilterInitStructure.CAN_FilterMode = CAN_FilterMode_IdMask;
    CAN_FilterInitStructure.CAN_FilterScale = CAN_FilterScale_32bit;
    CAN_FilterInitStructure.CAN_FilterIdHigh = (u16)(((PowerControl_ID<<3)>>16)&0xffff) ;
    CAN_FilterInitStructure.CAN_FilterIdLow =  (u16)(PowerControl_ID<<3)|CAN_ID_EXT|CAN_RTR_DATA&0xffff;
    CAN_FilterInitStructure.CAN_FilterMaskIdHigh = 0xFFFF;
    CAN_FilterInitStructure.CAN_FilterMaskIdLow = 0xFFFC;
    CAN_FilterInitStructure.CAN_FilterFIFOAssignment = 0;
    CAN_FilterInitStructure.CAN_FilterActivation = ENABLE;

TxMessage.ExtId = ExtId;
// TxMessage.StdId = StdId;
TxMessage.RTR=CAN_RTR_DATA;       //数据帧
TxMessage.IDE=CAN_ID_EXT;       //标准帧格式
// TxMessage.IDE=CAN_ID_STD;       //标准帧格式
TxMessage.DLC=Count;    //帧长度，单位：字节

问下还有什么需要设置的么感觉没什么问题了啊