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70353C датащи(PDF) 38 Page - Microchip Technology

номер детали 70353C
подробное описание детали  Section 21. Enhanced Controller Area Network
PDF  76 Pages
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производитель  MICROCHIP [Microchip Technology]
домашняя страница  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

70353C датащи(HTML) 38 Page - Microchip Technology

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dsPIC33E/PIC24E Family Reference Manual
DS70353C-page 21-38
© 2008-2011 Microchip Technology Inc.
Example 21-2:
Code Example for Extended Data Frame Transmission (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] = 0x123D;
/* 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 = 0b0
RB1 = 0b0
RB0 = 0b0
DLC = 0b1000 */
ecan1MsgBuf[2][2] = 0x0C08;
/* Write message data bytes */
ecan1MsgBuf[2][3] = 0xabcd;
ecan1MsgBuf[2][4] = 0xabcd;
ecan1MsgBuf[2][5] = 0xabcd;
ecan1MsgBuf[2][6] = 0xabcd;
/* 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);
}



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