MCP2150 datasheet(21/52 Pages) MICROCHIP

21 / 52 page

 2002 Microchip Technology Inc.

Preliminary

DS21655B-page 21

MCP2150

EXAMPLE 2-1:

PIC16FXX Code to Program the Device ID (Continued)

ctsLow

clrf

breg

; clear the offset

call

string1

; get the byte count

;

(ID length byte + # bytes in string)

movwf

creg

; use creg as the loop counter

incf

creg, f

; add 1 to the loop count since

;

we're jumping into the middle

movwf

areg

; save the count in areg to send it

goto

sndwt

; start sending the count + ID string

;

sndlp

call

string1

; get the byte

movwf

areg

; save the byte

sndwt

btfsc

cts

; check the cts input

goto

sndwt

; wait if cts=1

call

txser

; send the byte using the Transmit Routine

incf

breg,f

; increment the table pointer

decfsz

creg, f

; more bytes to send?

goto

sndlp

; YES, send more bytes

;

bcf

clr

; NO, place the MCP2150 in reset

bcf

dtr

; Force the DTR pin low for normal mode

bsf

rts

; Force the RTS pin high for normal mode

call

delay1mS

; delay for 1 ms.

bsf

clr

; allow the MCP2150 to come out of reset

;

ctsLP2

btfss

cts

; if cts=1 then MCP2150 is in Normal mode

goto

ctsLP2

; NO, wait for MCP2150 to be ready

goto

NormalOperation ; The MCP2150 in now programmed with new ID,

; and is ready to establish an IR link

MCP2150 Datasheet(PDF) 21 Page - Microchip Technology

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