PIC18F2682-I/PT MICROCHIP [Microchip Technology], PIC18F2682-I/PT Datasheet - Page 288

• Manufacturer Part Number: PIC18F2682-I/PT
• Description: 28/40/44-Pin Enhanced Flash Microcontrollers with ECAN Technology, 10-Bit A/D and nanoWatt Technology
• Manufacturer: MICROCHIP [Microchip Technology]

PIC18F2682/2685/4682/4685
EXAMPLE 23-3:
DS39761B-page 286
; Need to transmit Standard Identifier message 123h using TXB0 buffer.
; To successfully transmit, CAN module must be either in Normal or Loopback mode.
; TXB0 buffer is not in access bank.
; that correct bank is selected.
BANKSEL TXB0CON
; Now load transmit data into TXB0 buffer.
MOVLW
MOVWF
; Load rest of data bytes - up to 8 bytes into TXB0 buffer.
...
; Load message identifier
MOVLW
MOVWF
MOVLW
MOVWF
; No need to load TXB0EIDL:TXB0EIDH, as we are transmitting Standard Identifier Message only.
; Now that all data bytes are loaded, mark it for transmission.
MOVLW
MOVWF
; If required, wait for message to get transmitted
BTFSC
BRA
; Message is transmitted.
MY_DATA_BYTE1
TXB0D0
60H
TXB0SIDL
24H
TXB0SIDH
B’00001000’
TXB0CON
TXB0CON, TXREQ
$-2
TRANSMITTING A CAN MESSAGE USING BANKED METHOD
Preliminary
; One BANKSEL in beginning will make sure that we are
; in correct bank for rest of the buffer access.
; Load first data byte into buffer
; Compiler will automatically set “BANKED” bit
; Load SID2:SID0, EXIDE = 0
; Load SID10:SID3
; Normal priority; Request transmission
; Is it transmitted?
; No.
And since we want banked method, we need to make sure
Continue to wait...
© 2007 Microchip Technology Inc.