PIC18LF4682-I/ML 查看數據表（PDF） - Microchip Technology

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PIC18LF4682-I/ML

28/40/44-Pin Enhanced Flash Microcontrollers with ECAN™ Technology, 10-Bit A/D and nanoWatt Technology

Microchip Technology 

PIC18F2682/2685/4682/4685

EXAMPLE 23-3: TRANSMITTING A CAN MESSAGE USING BANKED METHOD

; 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. And since we want banked method, we need to make sure

; that correct bank is selected.

BANKSEL TXB0CON

; One BANKSEL in beginning will make sure that we are

; in correct bank for rest of the buffer access.

; Now load transmit data into TXB0 buffer.

MOVLW MY_DATA_BYTE1

; Load first data byte into buffer

MOVWF TXB0D0

; Compiler will automatically set “BANKED” bit

; Load rest of data bytes - up to 8 bytes into TXB0 buffer.

...

; Load message identifier

MOVLW 60H

; Load SID2:SID0, EXIDE = 0

MOVWF TXB0SIDL

MOVLW 24H

; Load SID10:SID3

MOVWF TXB0SIDH

; 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 B’00001000’

; Normal priority; Request transmission

MOVWF TXB0CON

; If required, wait for message to get transmitted

BTFSC TXB0CON, TXREQ

; Is it transmitted?

BRA

$-2

; No. Continue to wait...

; Message is transmitted.

DS39761B-page 286

Preliminary

© 2007 Microchip Technology Inc.

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