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$ title (HD7279A Test Program) $ DB ;********************************* ; RAMaa ;********************************* BIT_COUNT DATA 07FH TIMER DATA 07EH TIMER1 DATA 07DH TEN DATA 07CH DATA_IN DATA 020H DATA_OUT DATA 021H

!
;******************************************* ; I/O"aa ;******************************************* DAT BIT P1.2 ;HD7279AYDATA#P1.2 KEY BIT P1.3 ;HD7279AYKEY#P1.3 CS BIT P1.4 ;HD7279AYCS#P1.4 CLK BIT P1.5 ;HD7279AYCLK#P1.5 ORG JMP ORG START: MOV MOV MOV 000H START 100H SP,#2FH P1,#11011011B TIMER,#50

;aa ;I/O" ;1i25MS

START_DELAY: MOV START_DELAY1:DJNZ DJNZ MOV CALL SETB MAIN: JB MOV CALL CALL SETB MOV MOV DIV MOV MOV
TIMER1,#255 TIMER1,START_DELAY1 TIMER,START_DELAY DATA_OUT,#10100100B SEND CS KEY,MAIN DATA_OUT,#00010101B SEND RECEIVE CS B,#10 A,DATA_IN AB TEN,A DATA_OUT,#10100001B
;a(bc)DE ;3aCSV*+ ;aae.-< ;.-< CN.ODE
;jCSV*+ ;16U BCDEU#
CALL MOV CALL MOV CALL MOV CALL MOV CALL MOV CALL SETB JNB JMP
SEND DATA_OUT,#10100001B SEND DATA_OUT,#10000001B ;HD7279A SEND DATA_OUT,#10000000B ;HD7279A SEND CS KEY,WAIT ;p4-.c MAIN
;2DE dI
;AA,9Z
;L ;CDEfHD7279A
WAIT:
;******************************************* ; C1HIfHD7279 *I ;******************************************* SEND: MOV BIT_COUNT,#8 ;ja=8 CLR CS ;jCSV,+ CALL LONG_DELAY ;r1

SEND_LOOP:
MOV MOV SETB MOV RL MOV CALL CLR CALL DJNZ CLR RET
C,DATA_OUT.7 DAT,C CLK A,DATA_OUT A DATA_OUT,A SHORT_DELAY CLK SHORT_DELAY BIT_COUNT,SEND_LOOP DAT
;(91 ;jCLKV*+ ;4CL
;h1 ;jCLKV,+ ;h1 ;_aae8eCR ;CR
;******************************************* ; ;HD7279#euHI *I ;******************************************* RECEIVE: MOV BIT_COUNT,#8 ;ja=8 SETB DAT ;jP1.2(DATA)"V*+ ;(()WX) CALL LONG_DELAY ;r1 RECEIVE_LOOP: SETB CLK ;kCLKV*+ CALL SHORT_DELAY ;h1 MOV A,DATA_IN ;L RL MOV MOV MOV CLR CALL DJNZ CLR RET A DATA_IN,A C,DAT ;NuL DATA_IN.0,C CLK ;kCLKV,+ SHORT_DELAY BIT_COUNT,RECEIVE_LOOP;aae#e8L DAT ;yjDAT"V,+((9WX)
;******************************************* ; 1$5 ;******************************************* LONG_DELAY: MOV TIMER,#25 ;ja112Vi50uS DELAY_LOOP: DJNZ TIMER,DELAY_LOOP RET SHORT_DELAY: MOV TIMER,#4 ;ja112Vi8uS SHORT_LP: DJNZ TIMER,SHORT_LP

RET END
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"Y/1}p TITLE LIST INCLUDE "HD7279A TEST" P=16C54 P16C5X.INC
;********************************** ; 01aa ;********************************** BIT_COUNT SET 0X07 DATA_OUT SET 0X08 DATA_IN SET 0X09 TEN SET 0X0A TIMER SET 0X0B TIMER1 SET 0X0C ;********************************** ; I/O"aa ;********************************** CS EQU 0 CLK EQU 1 DAT EQU 2 KEY EQU 3 ORG GOTO ORG 0x1FF START 0X00

;CS#16C54YRA0 ;CLK#16C65YRA1 ;DAT#16C54YRA2 ;KEY#16C54YRA3
;******************************************* ; 1$5 ;******************************************* LONG_DELAY MOVLW D'16' ;ja112Vi50uS MOVWF TIMER

DELAY_LOOP
DECFSZ GOTO RETLW
TIMER DELAY_LOOP 0
MOVLW D3 ;ja112Vi8uS MOVWF TIMER SHORT_LP DECFSZ TIMER GOTO SHORT_LP RETLW 0 ;******************************************* ; C1HIfHD7279 *I ;******************************************* SEND MOVWF DATA_OUT ;4CL1)DATA_OUT MOVLW D'8' MOVWF BIT_COUNT ;ja=8 BCF PORTA,CS ;jCSV,+ CALL LONG_DELAY ;r1 SHORT_DELAY SEND_LOOP BCF RLF BCF BTFSC BSF BSF CALL BCF CALL DECFSZ GOTO BCF RETLW STATUS,C DATA_OUT PORTA,DAT STATUS,C PORTA,DAT PORTA,CLK SHORT_DELAY PORTA,CLK SHORT_DELAY BIT_COUNT SEND_LOOP PORTA,DAT 0 ;(91
;jCLKV*+ ;h1 ;jCLKV,+ ;_aae8eCR ;CR C;******************************************* ; ;HD7279#euHI *I ;******************************************* RECEIVE MOVLW D'8' MOVWF BIT_COUNT ;ja=8 MOVLW B'11111100' ;jRA2(DATA)"V()WX TRIS CALL RECEIVE_LOOP BSF CALL

PORTA LONG_DELAY PORTA,CLK SHORT_DELAY

;r1 ;kCLKV*+ ;h1

BSF BTFSS BCF RLF BCF CALL DECFSZ GOTO MOVLW TRIS RETLW
STATUS,C PORTA,DAT STATUS,C DATA_IN PORTA,CLK SHORT_DELAY BIT_COUNT RECEIVE_LOOP B'11111000' PORTA 0
;NuL ;kCLKV,+ ;aae#e8L ;yjRA2(DATA)"V(9X
;******************************************* ; ;******************************************* START MOVLW B'11111000' ;I/O" TRIS PORTA MOVLW B'11111001' MOVWF PORTA MOVLW 0X19 ;1i25MS MOVWF TIMER START_DELAY MOVLW 0XFF MOVWF TIMER1 START_DELAY1 DECFSZ TIMER1 GOTO START_DELAY1 DECFSZ TIMER GOTO START_DELAY MOVLW B'10100100' ;a(bc)DE CALL SEND BSF PORTA,CS ;3aCSV*+ ;******************************************* ; $5 ;******************************************* MAIN BTFSC PORTA,KEY ;aae.-< GOTO MAIN MOVLW B'00010101' ;.-< CN.ODE CALL SEND ;CN.ODE CALL RECEIVE ;;HD7279AN.OE BSF PORTA,CS ;jCSV*+ ;*******************************************

; 16U BCDEU# ;******************************************* CLRF TEN GET_DEC MOVLW D'10' SUBWF DATA_IN,W SKPC GOTO OVER MOVWF DATA_IN INCF TEN GOTO GET_DEC ;******************************************* ;C-.YBCDEfHD7279 ;******************************************* ;2DE dI
AA ;9Z
L OVER MOVLW B'10100001' ;DE CALL SEND ;CDEfHD7279A MOVLW B'10100001' ;DE CALL SEND ;CDEfHD7279A MOVLW B'10000001' ;HD7279A MOVFW TEN CALL SEND ;CUHfHD7279A MOVLW B'10000000' ;HD7279A MOVFW DATA_IN CALL SEND ;CHfHD7279A BSF PORTA,CS WAIT BTFSS PORTA,KEY ;p4-.c GOTO WAIT GOTO MAIN END

u:MCS51YC$5 oaHD7279A YC51$5,CO$YO #include //*** aa *** void long_delay(void); // r1 void short_delay(void); // h1 void delay10ms(unsigned char); // 110MS void write7279(unsigned char, unsigned char);// u)fHD7279 unsigned char read7279(unsigned char);// ;HD7279N9 void send_byte(unsigned char); // CuHI unsigned char receive_byte(void); // #euHI //*** eI/O"aa *** unsigned char digit[5]; unsigned char key_number, j, k; unsigned int tmr; unsigned long wait_cnter; sbit cs=P1^4; sbit clk=P1^5; sbit dat=P1^2; sbit key=P1^3; //****** HD7279A DE ****** #define CMD_RESET 0xa4 #define CMD_TEST 0xbf #define DECODE0 0x80 #define DECODE1 0xc8 #define CMD_READ 0x15 #define UNDECODE 0x90 #define RTL_CYCLE 0xa3 #define RTR_CYCLE 0xa2 #define RTL_UNCYL 0xa1 #define RTR_UNCYL 0xa0 #define ACTCTL 0x98 #define SEGON 0xe0 #define SEGOFF 0xc0 #define BLINKCTL 0x88 //*** $5 *** main()

// // // //
cs at P1.4 clk # P1.5 dat # P1.2 key # P1.3
{ while (1) { for (tmr=0;tmr<0x2000;tmr++); send_byte(CMD_RESET); //****************************************** DE //
// ~1 // aHD7279A
//****************************************** send_byte(CMD_TEST); // DE for (j=0;j<3;j++) // 1i3 { delay10ms(100); } send_byte(CMD_RESET); // bc
//********************************************** noDE.O#" // // h-.Y.E
9, )10A-. // -S0.U) write7279(UNDECODE,0X08); // (R)1
<='_' write7279(UNDECODE+1,0x08);// (R)2
<='_' do { if (!key) // ).-< { key_number=read7279(CMD_READ); // N9.E write7279(DECODE1+1,key_number/16); // (R)2
.E*8 write7279(DECODE1,key_number&0x0f); // (R)1
.E,8 while (!key); // p4-.c wait_cnter=0; } wait_cnter++; } while (key_number!=0 && wait_cnter<0x30000); // )-.V 0 ^M1UU)

write7279(BLINKCTL,0xff);
// bcnojk
//****************************************** // //****************************************** for (j=0;j<5;j++) // uV00000 { digit[j]=0; write7279(DECODE0+j,digit[j]); } while (digit[4]<2) // )f20000 { digit[0]++; if (digit[0]>9) { digit[0]=0; digit[1]++; if (digit[1]>9) { digit[1]=0; digit[2]++; if (digit[2]>9) { digit[2]=0; digit[3]++; if (digit[3]>9) { digit[3]=0; digit[4]++; if (digit[4]>9) { digit[4]=0; } } } } } write7279(DECODE0,digit[0]); if (digit[0]==0) { write7279(DECODE0+1,digit[1]);

if (digit[1]==0) { write7279(DECODE0+2,digit[2]); if (digit[2]==0) { write7279(DECODE0+3,digit[3]); if (digit[3]==0) { write7279(DECODE0+4,digit[4]); } } } } } delay10ms(150); send_byte(CMD_RESET);
// bc
//************************************************* uH'2' delay10ms(80); //************************************************* 1/23/4/ // 2"H|63,|63 // " //************************************************* for (j=0;j<23;j++) { send_byte(RTR_CYCLE); // 1/23/423 delay10ms(12); } for (j=0;j<23;j++) { send_byte(RTL_CYCLE); // 1/23/423 delay10ms(12); } //********************************************* EEAC0DE //

//********************************************* for (j=0;j<16;j++) { send_byte(RTL_UNCYL); // "1/23/4DE write7279(DECODE0,j); // EEAC0DE
(R)1 delay10ms(50); } delay10ms(150); send_byte(CMD_RESET); //********************************************* EEAC1DE // //********************************************* for (j=0;j<16;j++) { send_byte(RTR_UNCYL); // "1/23/4DE write7279(DECODE1+7,j); // EEAC0DE
(R)8 delay10ms(50); } delay10ms(150); //********************************************* lmDE // //********************************************* k=0xff; for (j=0;j<6;j++) { k=k/2; write7279(ACTCTL,k);// Mu(c)ulm delay10ms(100); } write7279(ACTCTL,0xff); // 3a8
delay10ms(100); send_byte(CMD_RESET); // bc
//********************************************** |%DE^|DE // //********************************************** for (j=0;j<64;j++)

{ write7279(SEGON,j); write7279(SEGOFF,j-1); delay10ms(20); } } } void write7279(unsigned char cmd, unsigned char dta) { send_byte (cmd); send_byte (dta); } unsigned char read7279(unsigned char command) { send_byte(command); return(receive_byte()); } void send_byte( unsigned char out_byte) { unsigned char i; cs=0; long_delay(); for (i=0;i<8;i++) { if (out_byte&0x80) { dat=1; } else { dat=0; } clk=1; short_delay(); clk=0; short_delay(); out_byte=out_byte*2; }

// h64
|% // 1hIu
|
dat=0; } unsigned char receive_byte(void) { unsigned char i, in_byte; dat=1; // jV()WX long_delay(); for (i=0;i<8;i++) { clk=1; short_delay(); in_byte=in_byte*2; if (dat) { in_byte=in_byte|0x01; } clk=0; short_delay(); } dat=0; return (in_byte); } void long_delay(void) { unsigned char i; for (i=0;i<0x30;i++); } void short_delay(void) { unsigned char i; for (i=0;i<8;i++); } // ********************* 1 n*10ms ********************** void delay10ms(unsigned char time) { unsigned char i; unsigned int j;

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