XXX_Read

This function reads the last received CAN frame from the CAN controller. If there is no received CAN frame, the corresponding bytes will be 0.

CPU_INT16S XXX_Read(CPU_INT16S devId,
  CPU_INT08U *buffer,

CPU_INT16U size);

Parameter	Meaning
devId	device identifier, returned by `XXX_Open()`
buffer	Pointer to CAN frame of type CANFRM
size	Size of buffer (must be equal to sizeof(CANFRM))

Number of bytes in CAN frame or -1 if an error was detected.