PIC18C658T-ESLASHCL datasheet(188/366 Pages) MICROCHIP

Part #	PIC18C658T-E/CL

Description	High-Performance Microcontrollers with CAN Module

PDF	366 Pages

Scroll/Zoom	100%

Manufacturer	MICROCHIP [Microchip Technology]

Direct Link	http://www.microchip.com

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188 / 366 page

PIC18CXX8

DS30475A-page 188

Advanced Information

 2000 Microchip Technology Inc.

RXB0Interrupt

bcf

PIR3, RXB0IF

; Clear the interrupt flag

goto

AccessBuffer

; This is either TX or RX interrupt

; Copy CANCON.ICODE bits to CANSTAT.WIN bits

movf

TempCANCON, W

; Clear CANCON.WIN bits before copying

; new ones.

andlw

b’11110001’

; Use previously saved CANCON value to

; make sure same value.

movwf

TempCANCON

; Copy masked value back to TempCANCON

movf

TempCANSTAT, W

; Retrieve ICODE bits

andlw

b’00001110’

; Use previously saved CANSTAT value

; to make sure same value.

iorwf

TempCANCON

; Copy ICODE bits to WIN bits.

movff

TempCANCON, CANCON

; Copy the result to actual CANCON

; Access current buffer

…

; Your code

; Restore CANCON.WIN bits

movf

CANCON, W

; Preserve current non WIN bits

andlw

b’11110001’

iorwf

TempCANCON

; Restore original WIN bits

; Do not need to restore CANSTAT - it is read-only register.

; Return from interrupt or check for another module interrupt source

PIC18C658T-E/CL Datasheet(PDF) 188 Page - Microchip Technology

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