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;
; Remote display
;
; Device : PIC16F873
; Author : Seiichi Inoue
;********************************************************
list p=pic16f873
include p16f873.inc
__config _hs_osc & _wdt_off & _pwrte_on & _lvp_off
errorlevel -302 ;Suppress bank warning
;**************** Label Definition ********************
cblock h'20'
data_c ;Category data
data_h ;100th digit data
data_t ;10th digit data
data_u ;1st digit data
disp_p ;LED position
key_p ;Key position
key_data ;Key data
key_flag ;Key flag
tx_p ;Send position
endc
rc4 equ h'04' ;RC4 port designation
seg7_0 equ b'00000001' ;-abcdefg Pattern 0
seg7_1 equ b'01001111' ; Pattern 1
seg7_2 equ b'00010010' ; Pattern 2
seg7_3 equ b'00000110' ; Pattern 3
seg7_4 equ b'01001100' ; Pattern 4
seg7_5 equ b'00100100' ; Pattern 5
seg7_6 equ b'00100000' ; Pattern 6
seg7_7 equ b'00001111' ; Pattern 7
seg7_8 equ b'00000000' ; Pattern 8
seg7_9 equ b'00000100' ; Pattern 9
seg7_a equ b'00110000' ; Illegal int
seg7_b equ b'01111111' ; LED off
;**************** Program Start ***********************
org 0 ;Reset Vector
goto init
org 4 ;Interrupt Vector
goto int
;**************** Initial Process *********************
init
;*** Port mode initializing
bsf status,rp0 ;Change to Bank1
movlw b'00000110' ;RA port to digital mode
movwf adcon1 ;Set ADCON1 register
clrf trisa ;Set RA to output mode
clrf trisb ;Set RB to output mode
movlw b'00010000' ;RC4 input, other output
movwf trisc ;Set TRISC register
;*** LED & KEY scan interval initializing (Timer0 = 2ms)
movlw b'10000010' ;PBPU=off,PSA=0,PS=1:8
movwf option_reg ;Set OPTION_REG register
bcf status,rp0 ;Change to Bank0
movlw d'6' ;(256-6)x8=2000usec
movwf tmr0 ;Set TMR0 register
;*** Port initializing
movlw b'00001110' ;Set TR1 = ON
movwf porta ;Write PORTA
movlw b'01111111' ;Set LED off data
movwf portb ;Write PORTB
clrf portc ;Write SW1 select data
;*** Work area initializing
movlw b'01111111' ;Set Category LED off
movwf data_c ;Set Category LED data
movlw seg7_b ;Set 7segment pattern B
movwf data_h ;Set 100th LED off data
movwf data_t ;Set 10th LED off data
movwf data_u ;Set 1st LED off data
movlw d'4' ;LED position = 4
movwf disp_p ;Set LED position data
movlw d'15' ;Key position = 15
movwf key_p ;Set Key position data
clrf key_data ;Clear Key data
clrf key_flag ;Clear Key flag
movlw d'6' ;Send position = 6
movwf tx_p ;Set Send position data
;*** USART control
bsf status,rp0 ;Change to Bank1
movlw d'25' ;Speed = 9600bps
movwf spbrg ;Set SPBRG register
bcf txsta,sync ;Set Async mode
bsf txsta,brgh ;Set BRGH(High-speed)
bcf txsta,txen ;Set Send disenable
bsf pie1,txie ;Set TX interruption
bcf status,rp0 ;Change to Bank0
bsf rcsta,spen ;Set Serial-port
;*** Interruption control
movlw b'11100000' ;GIE,PEIE,T0IE = ON
movwf intcon ;Set INTCON register
wait
goto $ ;wait
;*************** Interruption Process *****************
int
btfsc intcon,t0if ;Check TMR0
goto led ;TMR0 time-out
btfsc pir1,txif ;Check TX buffer
goto send_data ;TX buffer is empty
;******** Illegal interruption (For debugging) ********
illegal
movlw seg7_a ;Set 7segment pattern A
movwf portb ;Write LED data
movlw b'00000111' ;Set 1st digit select
movwf porta ;Write LED select data
goto $ ;Stop
;************ END of Interruption Process **************
int_end
retfie
;**************** LED control Process *****************
led
bcf intcon,t0if ;Clear T0IF
movlw d'6' ;Set Time value (2msec)
movwf tmr0 ;Write TMR0 register
movlw d'4' ;Set check data
subwf disp_p,w ;Check LED position data
btfss status,z ;Position = 4 ?
goto led1 ;No.
movlw b'00001110' ;Set TR1 = ON
movwf porta ;Write LED select data
movfw data_c ;Read Category data
goto led_cont ;Jump to LED control
led1
movlw d'3' ;Set check data
subwf disp_p,w ;Check LED position data
btfss status,z ;Position = 3 ?
goto led2 ;No.
movlw b'00001101' ;Set TR2 = ON
movwf porta ;Write LED select data
movfw data_h ;Read 100th digit data
goto led_cont ;Jump to LED control
led2
movlw d'2' ;Set check data
subwf disp_p,w ;Check LED position data
btfss status,z ;Position = 2 ?
goto led3 ;No.
movlw b'00001011' ;Set TR3 = ON
movwf porta ;Write LED select data
movfw data_t ;Read 10th digit data
goto led_cont ;Jump to LED control
led3
movlw d'1' ;Set check data
subwf disp_p,w ;Check LED position data
btfss status,z ;Position = 1 ?
goto led4 ;No.
movlw b'00000111' ;Set TR4 = ON
movwf porta ;Write LED select data
movfw data_u ;Read 1st digit data
led_cont
movwf portb ;Write LED control data
decfsz disp_p,f ;LED position data - 1
goto key ;Jump to key scan
led4
movlw d'4' ;Set LED position data
movwf disp_p ;Write LED position data
;****************** Key scan Process ******************
key
;**** Check SW1 (Digit 1)
movlw d'15' ;Set check data
subwf key_p,w ;Check Key position data
btfss status,z ;Position = 15 ?
goto key2 ;No.
movlw b'00000000' ;Set SW1 select data
movwf portc ;Write SW1 select data
btfsc portc,rc4 ;SW1 = ON ?
goto key1_1 ;No.
movlw d'1' ;Set check data
subwf key_data,w ;Check Key data
btfss status,z ;2nd time ?
goto key1_2 ;No.
btfss key_flag,0 ;Key flag ON ?
goto key1_3 ;No.
goto key_end1 ;Jump to SW1 scan
key1_1
movlw d'1' ;Set check data
subwf key_data,w ;Check Key data
btfss status,z ;Corresponding key off ?
goto key_end ;No.
clrf key_data ;Clear Key data
clrf key_flag ;Clear Key flag
goto key_end ;Jump to Key scan end
key1_2
movlw d'1' ;Set key data
movwf key_data ;Save key data
goto key_end1 ;Jump to SW1 scan
key1_3
bsf key_flag,0 ;Set Key flag
movfw data_t ;Read 10th digit
movwf data_h ;Set 100th digit
movfw data_u ;Read 1st digit
movwf data_t ;Set 10th digit
movlw seg7_1 ;Set 7segment pattern 1
movwf data_u ;Set 1st digit
goto key_end1 ;Jump to SW1 scan
;**** Check SW2 (Digit 2)
key2
movlw d'14' ;Set check data
subwf key_p,w ;Check Key position data
btfss status,z ;Position = 14 ?
goto key3 ;No.
movlw b'00000001' ;Set SW2 select data
movwf portc ;Write SW2 select data
btfsc portc,rc4 ;SW2 = ON ?
goto key2_1 ;No.
movlw d'2' ;Set check data
subwf key_data,w ;Check Key data
btfss status,z ;2nd time ?
goto key2_2 ;No.
btfss key_flag,0 ;Key flag ON ?
goto key2_3 ;No.
goto key_end1 ;Jump to SW1 scan
key2_1
movlw d'2' ;Set check data
subwf key_data,w ;Check Key data
btfss status,z ;Corresponding key off ?
goto key_end ;No.
clrf key_data ;Clear Key data
clrf key_flag ;Clear Key flag
goto key_end ;Jump to Key scan end
key2_2
movlw d'2' ;Set key data
movwf key_data ;Save key data
goto key_end1 ;Jump to SW1 scan
key2_3
bsf key_flag,0 ;Set Key flag
movfw data_t ;Read 10th digit
movwf data_h ;Set 100th digit
movfw data_u ;Read 1st digit
movwf data_t ;Set 10th digit
movlw seg7_2 ;Set 7segment pattern 2
movwf data_u ;Set 1st digit
goto key_end1 ;Jump to SW1 scan
;**** Check SW3 (Digit 3)
key3
movlw d'13' ;Set check data
subwf key_p,w ;Check Key position data
btfss status,z ;Position = 13 ?
goto key4 ;No.
movlw b'00000010' ;Set SW3 select data
movwf portc ;Write SW3 select data
btfsc portc,rc4 ;SW3 = ON ?
goto key3_1 ;No.
movlw d'3' ;Set check data
subwf key_data,w ;Check Key data
btfss status,z ;2nd time ?
goto key3_2 ;No.
btfss key_flag,0 ;Key flag ON ?
goto key3_3 ;No.
goto key_end1 ;Jump to SW1 scan
key3_1
movlw d'3' ;Set check data
subwf key_data,w ;Check Key data
btfss status,z ;Corresponding key off ?
goto key_end ;No.
clrf key_data ;Clear Key data
clrf key_flag ;Clear Key flag
goto key_end ;Jump to Key scan end
key3_2
movlw d'3' ;Set key data
movwf key_data ;Save key data
goto key_end1 ;Jump to SW1 scan
key3_3
bsf key_flag,0 ;Set Key flag
movfw data_t ;Read 10th digit
movwf data_h ;Set 100th digit
movfw data_u ;Read 1st digit
movwf data_t ;Set 10th digit
movlw seg7_3 ;Set 7segment pattern 3
movwf data_u ;Set 1st digit
goto key_end1 ;Jump to SW1 scan
;**** Check SW4 (Digit 4)
key4
movlw d'12' ;Set check data
subwf key_p,w ;Check Key position data
btfss status,z ;Position = 12 ?
goto key5 ;No.
movlw b'00000011' ;Set SW4 select data
movwf portc ;Write SW4 select data
btfsc portc,rc4 ;SW4 = ON ?
goto key4_1 ;No.
movlw d'4' ;Set check data
subwf key_data,w ;Check Key data
btfss status,z ;2nd time ?
goto key4_2 ;No.
btfss key_flag,0 ;Key flag ON ?
goto key4_3 ;No.
goto key_end1 ;Jump to SW1 scan
key4_1
movlw d'4' ;Set check data
subwf key_data,w ;Check Key data
btfss status,z ;Corresponding key off ?
goto key_end ;No.
clrf key_data ;Clear Key data
clrf key_flag ;Clear Key flag
goto key_end ;Jump to Key scan end
key4_2
movlw d'4' ;Set key data
movwf key_data ;Save key data
goto key_end1 ;Jump to SW1 scan
key4_3
bsf key_flag,0 ;Set Key flag
movfw data_t ;Read 10th digit
movwf data_h ;Set 100th digit
movfw data_u ;Read 1st digit
movwf data_t ;Set 10th digit
movlw seg7_4 ;Set 7segment pattern 4
movwf data_u ;Set 1st digit
goto key_end1 ;Jump to SW1 scan
;**** Check SW5 (Digit 5)
key5
movlw d'11' ;Set check data
subwf key_p,w ;Check Key position data
btfss status,z ;Position = 11 ?
goto key6 ;No.
movlw b'00000100' ;Set SW5 select data
movwf portc ;Write SW5 select data
btfsc portc,rc4 ;SW5 = ON ?
goto key5_1 ;No.
movlw d'5' ;Set check data
subwf key_data,w ;Check Key data
btfss status,z ;2nd time ?
goto key5_2 ;No.
btfss key_flag,0 ;Key flag ON ?
goto key5_3 ;No.
goto key_end1 ;Jump to SW1 scan
key5_1
movlw d'5' ;Set check data
subwf key_data,w ;Check Key data
btfss status,z ;Corresponding key off ?
goto key_end ;No.
clrf key_data ;Clear Key data
clrf key_flag ;Clear Key flag
goto key_end ;Jump to Key scan end
key5_2
movlw d'5' ;Set key data
movwf key_data ;Save key data
goto key_end1 ;Jump to SW1 scan
key5_3
bsf key_flag,0 ;Set Key flag
movfw data_t ;Read 10th digit
movwf data_h ;Set 100th digit
movfw data_u ;Read 1st digit
movwf data_t ;Set 10th digit
movlw seg7_5 ;Set 7segment pattern 5
movwf data_u ;Set 1st digit
goto key_end1 ;Jump to SW1 scan
;**** Check SW6 (Digit 6)
key6
movlw d'10' ;Set check data
subwf key_p,w ;Check Key position data
btfss status,z ;Position = 10 ?
goto key7 ;No.
movlw b'00000101' ;Set SW6 select data
movwf portc ;Write SW6 select data
btfsc portc,rc4 ;SW6 = ON ?
goto key6_1 ;No.
movlw d'6' ;Set check data
subwf key_data,w ;Check Key data
btfss status,z ;2nd time ?
goto key6_2 ;No.
btfss key_flag,0 ;Key flag ON ?
goto key6_3 ;No.
goto key_end1 ;Jump to SW1 scan
key6_1
movlw d'6' ;Set check data
subwf key_data,w ;Check Key data
btfss status,z ;Corresponding key off ?
goto key_end ;No.
clrf key_data ;Clear Key data
clrf key_flag ;Clear Key flag
goto key_end ;Jump to Key scan end
key6_2
movlw d'6' ;Set key data
movwf key_data ;Save key data
goto key_end1 ;Jump to SW1 scan
key6_3
bsf key_flag,0 ;Set Key flag
movfw data_t ;Read 10th digit
movwf data_h ;Set 100th digit
movfw data_u ;Read 1st digit
movwf data_t ;Set 10th digit
movlw seg7_6 ;Set 7segment pattern 6
movwf data_u ;Set 1st digit
goto key_end1 ;Jump to SW1 scan
;**** Check SW7 (Digit 7)
key7
movlw d'9' ;Set check data
subwf key_p,w ;Check Key position data
btfss status,z ;Position = 9 ?
goto key8 ;No.
movlw b'00000110' ;Set SW7 select data
movwf portc ;Write SW7 select data
btfsc portc,rc4 ;SW7 = ON ?
goto key7_1 ;No.
movlw d'7' ;Set check data
subwf key_data,w ;Check Key data
btfss status,z ;2nd time ?
goto key7_2 ;No.
btfss key_flag,0 ;Key flag ON ?
goto key7_3 ;No.
goto key_end1 ;Jump to SW1 scan
key7_1
movlw d'7' ;Set check data
subwf key_data,w ;Check Key data
btfss status,z ;Corresponding key off ?
goto key_end ;No.
clrf key_data ;Clear Key data
clrf key_flag ;Clear Key flag
goto key_end ;Jump to Key scan end
key7_2
movlw d'7' ;Set key data
movwf key_data ;Save key data
goto key_end1 ;Jump to SW1 scan
key7_3
bsf key_flag,0 ;Set Key flag
movfw data_t ;Read 10th digit
movwf data_h ;Set 100th digit
movfw data_u ;Read 1st digit
movwf data_t ;Set 10th digit
movlw seg7_7 ;Set 7segment pattern 7
movwf data_u ;Set 1st digit
goto key_end1 ;Jump to SW1 scan
;**** Check SW8 (Digit 8)
key8
movlw d'8' ;Set check data
subwf key_p,w ;Check Key position data
btfss status,z ;Position = 8 ?
goto key9 ;No.
movlw b'00000111' ;Set SW8 select data
movwf portc ;Write SW8 select data
btfsc portc,rc4 ;SW8 = ON ?
goto key8_1 ;No.
movlw d'8' ;Set check data
subwf key_data,w ;Check Key data
btfss status,z ;2nd time ?
goto key8_2 ;No.
btfss key_flag,0 ;Key flag ON ?
goto key8_3 ;No.
goto key_end1 ;Jump to SW1 scan
key8_1
movlw d'8' ;Set check data
subwf key_data,w ;Check Key data
btfss status,z ;Corresponding key off ?
goto key_end ;No.
clrf key_data ;Clear Key data
clrf key_flag ;Clear Key flag
goto key_end ;Jump to Key scan end
key8_2
movlw d'8' ;Set key data
movwf key_data ;Save key data
goto key_end1 ;Jump to SW1 scan
key8_3
bsf key_flag,0 ;Set Key flag
movfw data_t ;Read 10th digit
movwf data_h ;Set 100th digit
movfw data_u ;Read 1st digit
movwf data_t ;Set 10th digit
movlw seg7_8 ;Set 7segment pattern 8
movwf data_u ;Set 1st digit
goto key_end1 ;Jump to SW1 scan
;**** Check SW9 (Digit 9)
key9
movlw d'7' ;Set check data
subwf key_p,w ;Check Key position data
btfss status,z ;Position = 7 ?
goto key10 ;No.
movlw b'00001000' ;Set SW9 select data
movwf portc ;Write SW9 select data
btfsc portc,rc4 ;SW9 = ON ?
goto key9_1 ;No.
movlw d'9' ;Set check data
subwf key_data,w ;Check Key data
btfss status,z ;2nd time ?
goto key9_2 ;No.
btfss key_flag,0 ;Key flag ON ?
goto key9_3 ;No.
goto key_end1 ;Jump to SW1 scan
key9_1
movlw d'9' ;Set check data
subwf key_data,w ;Check Key data
btfss status,z ;Corresponding key off ?
goto key_end ;No.
clrf key_data ;Clear Key data
clrf key_flag ;Clear Key flag
goto key_end ;Jump to Key scan end
key9_2
movlw d'9' ;Set key data
movwf key_data ;Save key data
goto key_end1 ;Jump to SW1 scan
key9_3
bsf key_flag,0 ;Set Key flag
movfw data_t ;Read 10th digit
movwf data_h ;Set 100th digit
movfw data_u ;Read 1st digit
movwf data_t ;Set 10th digit
movlw seg7_9 ;Set 7segment pattern 9
movwf data_u ;Set 1st digit
goto key_end1 ;Jump to SW1 scan
;**** Check SW10 (Digit 0)
key10
movlw d'6' ;Set check data
subwf key_p,w ;Check Key position data
btfss status,z ;Position = 6 ?
goto key11 ;No.
movlw b'00001001' ;Set SW10 select data
movwf portc ;Write SW10 select data
btfsc portc,rc4 ;SW10 = ON ?
goto key10_1 ;No.
movlw d'10' ;Set check data
subwf key_data,w ;Check Key data
btfss status,z ;2nd time ?
goto key10_2 ;No.
btfss key_flag,0 ;Key flag ON ?
goto key10_3 ;No.
goto key_end1 ;Jump to SW1 scan
key10_1
movlw d'10' ;Set check data
subwf key_data,w ;Check Key data
btfss status,z ;Corresponding key off ?
goto key_end ;No.
clrf key_data ;Clear Key data
clrf key_flag ;Clear Key flag
goto key_end ;Jump to Key scan end
key10_2
movlw d'10' ;Set key data
movwf key_data ;Save key data
goto key_end1 ;Jump to SW1 scan
key10_3
bsf key_flag,0 ;Set Key flag
movfw data_t ;Read 10th digit
movwf data_h ;Set 100th digit
movfw data_u ;Read 1st digit
movwf data_t ;Set 10th digit
movlw seg7_0 ;Set 7segment pattern 0
movwf data_u ;Set 1st digit
goto key_end1 ;Jump to SW1 scan
;**** Check SW11 (Category 1(Sei))
key11
movlw d'5' ;Set check data
subwf key_p,w ;Check Key position data
btfss status,z ;Position = 5 ?
goto key12 ;No.
movlw b'00001010' ;Set SW11 select data
movwf portc ;Write SW11 select data
btfsc portc,rc4 ;SW11 = ON ?
goto key11_1 ;No.
movlw d'11' ;Set check data
subwf key_data,w ;Check Key data
btfss status,z ;2nd time ?
goto key11_2 ;No.
btfss key_flag,0 ;Key flag ON ?
goto key11_3 ;No.
goto key_end1 ;Jump to SW1 scan
key11_1
movlw d'11' ;Set check data
subwf key_data,w ;Check Key data
btfss status,z ;Corresponding key off ?
goto key_end ;No.
clrf key_data ;Clear Key data
clrf key_flag ;Clear Key flag
goto key_end ;Jump to Key scan end
key11_2
movlw d'11' ;Set key data
movwf key_data ;Save key data
goto key_end1 ;Jump to SW1 scan
key11_3
bsf key_flag,0 ;Set Key flag
movlw b'00111111' ;Set Category 1(Sei)
movwf data_c ;Set Category data
goto key_end1 ;Jump to SW1 scan
;**** Check SW12 (Category 2(Ten))
key12
movlw d'4' ;Set check data
subwf key_p,w ;Check Key position data
btfss status,z ;Position = 4 ?
goto key13 ;No.
movlw b'00001011' ;Set SW12 select data
movwf portc ;Write SW12 select data
btfsc portc,rc4 ;SW12 = ON ?
goto key12_1 ;No.
movlw d'12' ;Set check data
subwf key_data,w ;Check Key data
btfss status,z ;2nd time ?
goto key12_2 ;No.
btfss key_flag,0 ;Key flag ON ?
goto key12_3 ;No.
goto key_end1 ;Jump to SW1 scan
key12_1
movlw d'12' ;Set check data
subwf key_data,w ;Check Key data
btfss status,z ;Corresponding key off ?
goto key_end ;No.
clrf key_data ;Clear Key data
clrf key_flag ;Clear Key flag
goto key_end ;Jump to Key scan end
key12_2
movlw d'12' ;Set key data
movwf key_data ;Save key data
goto key_end1 ;Jump to SW1 scan
key12_3
bsf key_flag,0 ;Set Key flag
movlw b'01011111' ;Set Category 2(Ten)
movwf data_c ;Set Category data
goto key_end1 ;Jump to SW1 scan
;**** Check SW13 (Category 3(Pu))
key13
movlw d'3' ;Set check data
subwf key_p,w ;Check Key position data
btfss status,z ;Position = 3 ?
goto key14 ;No.
movlw b'00001100' ;Set SW13 select data
movwf portc ;Write SW13 select data
btfsc portc,rc4 ;SW13 = ON ?
goto key13_1 ;No.
movlw d'13' ;Set check data
subwf key_data,w ;Check Key data
btfss status,z ;2nd time ?
goto key13_2 ;No.
btfss key_flag,0 ;Key flag ON ?
goto key13_3 ;No.
goto key_end1 ;Jump to SW1 scan
key13_1
movlw d'13' ;Set check data
subwf key_data,w ;Check Key data
btfss status,z ;Corresponding key off ?
goto key_end ;No.
clrf key_data ;Clear Key data
clrf key_flag ;Clear Key flag
goto key_end ;Jump to Key scan end
key13_2
movlw d'13' ;Set key data
movwf key_data ;Save key data
goto key_end1 ;Jump to SW1 scan
key13_3
bsf key_flag,0 ;Set Key flag
movlw b'01101111' ;Set Category 3(Pu)
movwf data_c ;Set Category data
goto key_end1 ;Jump to SW1 scan
;**** Check SW14 (Send)
key14
movlw d'2' ;Set check data
subwf key_p,w ;Check Key position data
btfss status,z ;Position = 2 ?
goto key15 ;No.
movlw b'00001101' ;Set SW14 select data
movwf portc ;Write SW14 select data
btfsc portc,rc4 ;SW14 = ON ?
goto key14_1 ;No.
movlw d'14' ;Set check data
subwf key_data,w ;Check Key data
btfss status,z ;2nd time ?
goto key14_2 ;No.
btfss key_flag,0 ;Key flag ON ?
goto key14_3 ;No.
goto key_end1 ;Jump to SW1 scan
key14_1
movlw d'14' ;Set check data
subwf key_data,w ;Check Key data
btfss status,z ;Corresponding key off ?
goto key_end ;No.
clrf key_data ;Clear Key data
clrf key_flag ;Clear Key flag
goto key_end ;Jump to Key scan end
key14_2
movlw d'14' ;Set key data
movwf key_data ;Save key data
goto key_end1 ;Jump to SW1 scan
key14_3
bsf key_flag,0 ;Set Key flag
bsf status,rp0 ;Change to Bank1
bsf txsta,txen ;Set Send enable
bcf status,rp0 ;Change to Bank0
goto key_end1 ;Jump to SW1 scan
;**** Check SW15 (Clear)
key15
movlw d'1' ;Set check data
subwf key_p,w ;Check Key position data
btfss status,z ;Position = 1 ?
goto key_end1 ;Jump to SW1 scan
movlw b'00001110' ;Set SW15 select data
movwf portc ;Write SW15 select data
btfsc portc,rc4 ;SW15 = ON ?
goto key15_1 ;No.
movlw d'15' ;Set check data
subwf key_data,w ;Check Key data
btfss status,z ;2nd time ?
goto key15_2 ;No.
btfss key_flag,0 ;Key flag ON ?
goto key15_3 ;No.
goto key_end1 ;Jump to SW1 scan
key15_1
movlw d'15' ;Set check data
subwf key_data,w ;Check Key data
btfss status,z ;Corresponding key off ?
goto key_end1 ;No.
clrf key_data ;Clear Key data
clrf key_flag ;Clear Key flag
goto key_end1 ;Jump to Key scan end
key15_2
movlw d'15' ;Set key data
movwf key_data ;Save key data
goto key_end1 ;Jump to SW1 scan
key15_3
bsf key_flag,0 ;Set Key flag
movlw b'01111111' ;Set Category LED off
movwf data_c ;Set Category LED data
movlw seg7_b ;Set 7segment pattern B
movwf data_h ;Set 100th LED off data
movwf data_t ;Set 10th LED off data
movwf data_u ;Set 1st LED off data
goto key_end1 ;Jump to SW1 scan
key_end
decfsz key_p,f ;Key position data - 1
goto int_end ;Jump to END of interrupt
key_end1
movlw d'15' ;Set Key position data
movwf key_p ;Write Key position data
goto int_end ;Jump to END of interrupt
;***************** Data send Process ******************
send_data
;**** Send Start data
movlw d'6' ;Set check data
subwf tx_p,w ;Check send position
btfss status,z ;Category data ?
goto send1 ;No.
movlw b'10000000' ;Set Start data
movwf txreg ;Write Start data
goto send_end ;Jump to Send end
send1
;**** Send Category data
movlw d'5' ;Set check data
subwf tx_p,w ;Check send position
btfss status,z ;Category data ?
goto send2 ;No.
movfw data_c ;Read Category data
movwf txreg ;Write Category data
goto send_end ;Jump to Send end
send2
;**** Send 100th data
movlw d'4' ;Set check data
subwf tx_p,w ;Check send position
btfss status,z ;100th data ?
goto send3 ;No.
movfw data_h ;Read 100th data
movwf txreg ;Write 100th data
goto send_end ;Jump to Send end
;**** Send 10th data
send3
movlw d'3' ;Set check data
subwf tx_p,w ;Check send position
btfss status,z ;10th data ?
goto send4 ;No.
movfw data_t ;Read 10th data
movwf txreg ;Write 10th data
goto send_end ;Jump to Send end
;**** Send 1st data
send4
movlw d'2' ;Set check data
subwf tx_p,w ;Check send position
btfss status,z ;1st data ?
goto send5 ;No.
movfw data_u ;Read 1st data
movwf txreg ;Write 1st data
goto send_end ;Jump to Send end
;**** Stop transmission
send5
movlw d'1' ;Set check data
subwf tx_p,w ;Check send position
btfss status,z ;Stop transmission ?
goto send_end1 ;No.
bsf status,rp0 ;Change to Bank1
tx_wait
btfss txsta,trmt ;TX end ?
goto tx_wait ;No.
bcf txsta,txen ;Set Send disenable
bcf status,rp0 ;Change to Bank0
send_end
decfsz tx_p,f ;Send position - 1
goto int_end ;Jump to END of interrupt
send_end1
movlw d'6' ;Set Send position data
movwf tx_p ;Write Send position data
goto int_end ;Jump to END of interrupt
end |
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