ABL electronic PIC Microcontrollers PIC18 User Manual

mikroC - C Compiler for Microchip PIC microcontrollers

mikroC

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CANRead(long *id, char *data, char *datalen, char

*CAN_RX_MSG_FLAGS);

Message from receive buffer or zero if no message found.

Function reads message from receive buffer. If at least one full receive buffer is found, it
is extracted and returned. If none found, function returns zero.

Parameters: 

id

is message identifier; 

data

is an array of bytes up to 8 bytes in length;

datalen

is data length, from 1–8; 

CAN_RX_MSG_FLAGS

is value formed from constants

(see CAN constants).

CAN must be in mode in which receiving is possible.

rcv, rx, len, data[8]; long id;

rcv = CANRead(id, data, len, 0);

CANWrite(long id, char *data, char datalen, char

CAN_TX_MSG_FLAGS);

Returns zero if message cannot be queued (buffer full).

If at least one empty transmit buffer is found, function sends message on queue for
transmission. If buffer is full, function returns 0.

Parameters: 

id

is CAN message identifier. Only 11 or 29 bits may be used depending

on message type (standard or extended); 

data

is array of bytes up to 8 bytes in length;

datalen

is data length from 1–8; 

CAN_TX_MSG_FLAGS

is value formed from constants

(see CAN constants).

CAN must be in Normal mode.

tx, data; long id;

tx = CAN_TX_PRIORITY_0 & CAN_TX_XTD_FRAME;

CANWrite(id, data, 2, tx);