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AN247 Datasheet(PDF) 25 Page - Microchip Technology

Part # AN247
Description  A CAN Bootloader for PIC18F CAN Microcontrollers
PDF  32 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

AN247 Datasheet(HTML) 25 Page - Microchip Technology

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 2003 Microchip Technology Inc.
DS00247A-page 25
AN247
_PMWriteLp1
movf
POSTINC0, W
; Load the holding registers
movwf
TABLAT
rcall
_UpdateChksum
; Adjust the checksum
tblwt*+
decfsz WREG1, F
bra
_PMWriteLp1
#ifdef MODE_SELF_VERIFY
movlw
0x08
movwf
WREG1
_PMWriteLp2
tblrd*-
; Point back into the block
movf
POSTDEC0, W
decfsz WREG1, F
bra
_PMWriteLp2
movlw
b'10000100'
; Setup writes
rcall
_StartWrite
; Write the data
movlw
0x08
movwf
WREG1
_PMReadBackLp1
tblrd*+
; Test the data
movf
TABLAT, W
xorwf
POSTINC0, W
btfss
STATUS, Z
bsf
ERR_VERIFY
decfsz WREG1, F
bra
_PMReadBackLp1
; Not finished then repeat
#else
tblrd*-
; Point back into the block
movlw
b'10000100'
; Setup writes
rcall
_StartWrite
; Write the data
tblrd*+
; Return the pointer position
#endif
#ifdef
ALLOW_GET_CMD
bra
_CANSendAck
#else
bra
_CANMain
#endif
; *****************************************************************************



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