MikroElektronika PIC Microcontrollers PIC18 Manuale Utente Scaricare il pdf (Pagina 35)

TRISC = 0; // PORTC are outputs (LCD)

TRISB = 0x08; // RB2 is output, RB3 is input

/ CAN BUS Parameters

SJW = 1;

BRP = 1;

Phase_Seg1 = 6;

Phase_Seg2 = 7;

Prop_Seg = 6;

init_flag = CAN_CONFIG_SAMPLE_THRICE &

CAN_CONFIG_PHSEG2_PRG_ON &

CAN_CONFIG_STD_MSG &

CAN_CONFIG_DBL_BUFFER_ON &

CAN_CONFIG_VALID_XTD_MSG &

CAN_CONFIG_LINE_FILTER_OFF;

send_flag = CAN_TX_PRIORITY_0 &

CAN_TX_XTD_FRAME &

CAN_TX_NO_RTR_FRAME;

read_flag = 0;

/ Initialize CAN module

CANInitialize(SJW, BRP, Phase_Seg1, Phase_Seg2, Prop_Seg, init_flag);

/ Set CAN CONFIG mode

CANSetOperationMode(CAN_MODE_CONFIG, 0xFF);

mask = -1;

/ Set all MASK1 bits to 1's

CANSetMask(CAN_MASK_B1, mask, CAN_CONFIG_XTD_MSG);

/ Set all MASK2 bits to 1's

CANSetMask(CAN_MASK_B2, mask, CAN_CONFIG_XTD_MSG);

/ Set id of filter B2_F3 to 3

CANSetFilter(CAN_FILTER_B2_F3,3,CAN_CONFIG_XTD_MSG);

/ Set CAN module to NORMAL mode

CANSetOperationMode(CAN_MODE_NORMAL, 0xFF);

Figure 9.17: (Cont’d)

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509Advanced PIC18 Projects—CAN Bus Projects

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MikroElektronika PIC Microcontrollers PIC18 Manuale Utente Pagina 35