IR TX & RX code.........

[shams-_-m]

Hi every body​

i'm working on wireless car project, and use the IR communication , as start point

i used pic16f877a for the tx & rx , i wrote the tx & rx code

the code is (8 bit code that travil in serial by the IR to the RX)

these the two codes

first tx

BUTTON_TEST							; Test The Push Button On PortB To Select The Right Code .

BUTTON_RB0
		btfsc	PORTB,0
		CALL	RB0_CODE
;LOOP_RB0
;		btfsc	PORTB,0
;		GOTO	LOOP_RB0

BUTTON_RB1
		btfsc	PORTB,1
		CALL	RB1_CODE
;LOOP_RB1
;		btfsc	PORTB,1
;		GOTO	LOOP_RB1

;BUTTON_RB2
;		btfsc	PORTB,2
;		CALL	RB2_CODE
;LOOP_RB2
;		btfsc	PORTB,2
;		GOTO	LOOP_RB2

;BUTTON_RB3
;		btfsc	PORTB,3
;		CALL	RB3_CODE
;LOOP_RB3
;		btfsc	PORTB,3
;		GOTO	LOOP_RB3

		GOTO	BUTTON_TEST

;********************************************************************************************************$
; Reload The Code In CODE_REG Register .


RB0_CODE
		movlw	b'01010101'
		movwf	CODE_REG
		CALL	SEND_CODE
		return

RB1_CODE
		movlw	b'10101010'
		movwf	CODE_REG
		CALL	SEND_CODE
		return

RB2_CODE
		movlw	b'11110000'
		movwf	CODE_REG
		CALL	SEND_CODE
		return

RB3_CODE
		movlw	b'00001111'
		movwf	CODE_REG
		CALL	SEND_CODE
		return

;********************************************************************************************************$
; TX Subroutine That Send The Code As Serial On PIN RC0 .


SEND_CODE
; Start Bit .
		bsf 	PORTC,0
		movlw	.2						
		CALL 	DELAY_XMS			
		bcf 	PORTC,0
; 8-Bit Data Code .
DATA_CODE	
		btfss 	CODE_REG,7
		bcf 	PORTC,0
		btfsc	CODE_REG,7
		bsf 	PORTC,0	
		rlf 	CODE_REG,F
		movlw	.4							
		CALL	DELAY_XMS
		incf 	POINTER,F
		movlw 	.8
		subwf 	POINTER,W
		btfss 	STATUS, Z
		GOTO 	DATA_CODE	
		clrf 	POINTER
; Stop Bit .
		bsf 	PORTC,0
		movlw	.2						
		CALL 	DELAY_XMS
		bcf 	PORTC,0	
		return

and the rx

;********************************************************************************************************$
; Check For The Vaidity OF The Code And Store It If Yes . 


CODE_TEST

;********************************************************************************************************$
; Check For The Start Bit  .
 
		movlw 	.1
		CALL	DELAY_XMS
		btfss	PORTD,0
		GOTO	LOOP_RD0
		movlw	.1
		CALL	DELAY_XMS

;********************************************************************************************************$
; Check For The 8-Bit Code  .

CODE_ST
		movlw	.2
		CALL	DELAY_XMS
		btfsc	PORTD,0
		bsf		CODE_REG,7
		btfss	PORTD,0
		bcf		CODE_REG,7
		movlw	.2
		CALL	DELAY_XMS

		movlw	.2
		CALL	DELAY_XMS
		btfsc	PORTD,0
		bsf		CODE_REG,6
		btfss	PORTD,0
		bcf		CODE_REG,6
		movlw	.2
		CALL	DELAY_XMS

		movlw	.2
		CALL	DELAY_XMS
		btfsc	PORTD,0
		bsf		CODE_REG,5
		btfss	PORTD,0
		bcf		CODE_REG,5
		movlw	.2
		CALL	DELAY_XMS

		movlw	.2
		CALL	DELAY_XMS
		btfsc	PORTD,0
		bsf		CODE_REG,4
		btfss	PORTD,0
		bcf		CODE_REG,4
		movlw	.2
		CALL	DELAY_XMS

		movlw	.2
		CALL	DELAY_XMS
		btfsc	PORTD,0
		bsf		CODE_REG,3
		btfss	PORTD,0
		bcf		CODE_REG,3
		movlw	.2
		CALL	DELAY_XMS

		movlw	.2
		CALL	DELAY_XMS
		btfsc	PORTD,0
		bsf		CODE_REG,2
		btfss	PORTD,0
		bcf		CODE_REG,2
		movlw	.2
		CALL	DELAY_XMS

		movlw	.2
		CALL	DELAY_XMS
		btfsc	PORTD,0
		bsf		CODE_REG,1
		btfss	PORTD,0
		bcf		CODE_REG,1
		movlw	.2
		CALL	DELAY_XMS

		movlw	.2
		CALL	DELAY_XMS
		btfsc	PORTD,0
		bsf		CODE_REG,0
		btfss	PORTD,0
		bcf		CODE_REG,0
		movlw	.2
		CALL	DELAY_XMS
		
;********************************************************************************************************$
; Check For The Stop Bit  .				

		movlw 	.1
		CALL	DELAY_XMS
		btfss	PORTD,0
		GOTO	LOOP_RD0
		movlw	.1
		CALL	DELAY_XMS
		movlw	b'10101010'
		subwf	CODE_REG,W
		btfsc	STATUS, Z
		CALL	SET_I	
		movlw	b'01010101'
		subwf	CODE_REG,W
		btfsc	STATUS, Z
		CALL	SET_II
		return

SET_I
		movlw	b'10000000'
		movwf	PORTB
		return
SET_II
		movlw	b'01000000'
		movwf	PORTB
		return

the rx is too long , i try to do it as the same way as tx but i couldn 't

if any one have ideas , i realy need it please....

thanxx.........

Shams........

 

[engkhlaif]

first of all
dear , what is the purpose of Tx and Rx in ur model
and what is the main application u want to apply?
what is Wrong!!!!!!!!!!!!!!!!!!!!!!!!!! mean!!!!

 

[shams-_-m]

the program tx (transmit) 8 bit code using the IR transmitter , and the RX (recieve) recieves an 8 bit code using the IR reciever .

just

about the (Wrong!!!!!!!!!!!!!!!!!!!!!!!!!!)