70353C datasheet(42/76 Pages) MICROCHIP

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dsPIC33E/PIC24E Family Reference Manual

DS70353C-page 21-42

Example 21-3:

Code Example for Transmitting Extended Remote Frame (Continued)

/* Configure Message Buffer 2 for Transmission and assign priority */

C1TR23CONbits.TXEN2 = 0x1;

C1TR23CONbits.TX2PRI = 0x3;

/* At this point the ECAN1 module is ready to transmit a message. Place the ECAN module

in Normal mode. */

C1CTRL1bits.REQOP = 0;

while(C1CTRL1bits.OPMODE != 0);

/* Write to message buffer 2*/

/* CiTRBnSID = 0bxxx1 0010 0011 1101

IDE = 0b1

SRR = 0b1

SID<10:0> : 0b100 1000 1111 */

ecan1MsgBuf[2][0] = 0x123F;

/* CiTRBnEID = 0bxxxx 1111 0000 0000

EID<17:6> = 0b1111 0000 0000 */

ecan1MsgBuf[2][1] = 0x0F00;

/* CiTRBnDLC = 0b0000 1100 xxx0 1111

EID<17:6> = 0b000011

RTR = 0b1

RB1 = 0b0

RB0 = 0b0

DLC = 0b1000 */

/* RTR bit is set */

ecan1MsgBuf[2][2] = 0x0E00;

/* An RTR message does not have a data payload. */

/* Request message buffer 2 transmission */

C1TR23CONbits.TXREQ2 = 0x1;

/* The following shows an example of how the TXREQ bit can be polled to check if

transmission is complete. */

while(C1TR23CONbits.TXREQ2 == 1);

/* Message was placed successfully on the bus */

while(1);

}

70353C Datasheet(PDF) 42 Page - Microchip Technology