CanMsgRead

Description

This function constructs a CAN frame out of the linked signals. If there are no linked signals (or the signals are not in use), the corresponding bytes will be 0.

Prototype

CPU_INT16S CanMsgRead(CPU_INT16S   msgId,
                      void        *buffer,
                      CPU_INT16U   size);

Parameter	Meaning
`msgId`	Unique message identifier
`buffer`	Pointer to CAN frame of type `CANFRM`
`size`	Size of buffer (must be equal to `sizeof(CANFRM)`)

Return Value

One of the error codes CAN_ERR_MSGID, CAN_ERR_NULLPTR or CAN_ERR_FRMSIZE if an error is detected. Otherwise the number of bytes of a CAN frame is returned.