TM4C CAN 模块怎么设置接收滤波的？

可以看看库文档中的这个例程，应该是定义一个

tCANMsgObject sMsgObjectRx;

tCANMsgObject sMsgObjectTx;

然后赋值就可以了

//
// Configure a receive object.
//
sMsgObjectRx.ulMsgID = (0x400);
sMsgObjectRx.ulMsgIDMask = 0x7f8;
sMsgObjectRx.ulFlags = MSG_OBJ_USE_ID_FILTER | MSG_OBJ_FIFO;

// The first three message objects have the MSG_OBJ_FIFO set to indicate // that they are part of a FIFO.
//
CANMessageSet(CAN0_BASE, 1, &sMsgObjectRx, MSG_OBJ_TYPE_RX); CANMessageSet(CAN0_BASE, 2, &sMsgObjectRx, MSG_OBJ_TYPE_RX); CANMessageSet(CAN0_BASE, 3, &sMsgObjectRx, MSG_OBJ_TYPE_RX);