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24C02_2.asm
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24C02_2.asm
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ORG #8000
;------------------------------------
; Program For Read/Write EEPROM 24C02
; PA0=SDA (Data) (#1F)
; PB0=SCL (Clock) (#3F)
;------------------------------------
;1C CLS
;1D Set X
;1E Set X,Y
;1F Fill Sym,Num
;FF Inverse
;-----------------
SDA EQU #1F
SCL EQU #3F
PORTSET EQU #7F
ACKTIME EQU #F000
PTIME EQU #01
BORDER2 EQU 2
BORDER EQU 0
;
DI
LD A,BORDER
OUT (#FE),A
LD A,#80
OUT (PORTSET),A
LD A,#FF
OUT (SCL),A
OUT (SDA),A
;
CALL PRI_T
DEFB #1C,#FF
DEFB " Driver For Read/Write on I2C Bus ",#FF
DEFB " Copyright 2000 By (R)soft",13
DEFB 0
;
;=========== Read Sequence of Bytes From Adr ========
LD A,#A6
LD (DEVADR),A
LD A,0 ;From Adr EEPROM
LD HL,#C000 ;Read To
LD DE,#100 ;How Many
CALL RND_READ
RET C
LD HL,#C000
LD BC,#100
LD A,2 ;Koord Y
CALL PRINTB
EI
RET
CALL PRESSP
LD HL,#C100
LD BC,#100
LD A,2
CALL PRINTB
EI
RET
;========== Read From EEPROM =============
LD HL,#C000 ;Read To
LD DE,#100 ;How Many
CALL READ
RET
;========== Read One Byte From EEPROM ========
MMM
LD A,#C0 ;Adr EEPROM
CALL READBYTE
CALL PRIHB
LD A,7
CALL READBYTE
CALL PRIHB
; CALL NNN
EI
RET
;========== Write One Byte To EEPROM ==========
NNN
LD A,"-"
CALL PRIA
LD A,#C8 ;Adr EEPROM
LD C,#00 ;Byte To Write
CALL WRITEBYTE
RET
LD A,#C0
CALL READBYTE
CALL PRIHB
;
LD A,#C8
LD C,#55
CALL WRITEBYTE
LD A,#C8
CALL READBYTE
CALL PRIHB
RET
;========== Write Sequence of Bytes From Adr ========
LLL
LD A,#C8 ;To Adr EEPROM
LD HL,#7FF0 ;From MEMORY
LD DE,8 ;How Many (Maximum 8)
CALL RND_WRITE
RET
RESET
LD A,6
CALL START
CALL PUTBYTE
CALL GETACK
JP C,NOACK
CALL STOP
RET
RND_READ
LD (POINTAD),A
CALL START
LD A,(DEVADR)
RES 0,A ;Write Mode
CALL PUTBYTE
CALL GETACK
JP C,NOACK
LD A,0 ;ADR EEPROM
POINTAD EQU $-1
CALL PUTBYTE
CALL GETACK
JP C,NOACK
CALL START
LD A,(DEVADR)
SET 0,A ;Read Mode
CALL PUTBYTE
CALL GETACK
JP C,NOACK
DEC DE
LOOPRDM
CALL GETBYTE
LD (HL),A
INC HL
CALL GIVEACK
DEC DE
LD A,E
OR D
JR NZ,LOOPRDM
CALL GETBYTE
LD (HL),A
CALL STOP
AND A
RET
READBYTE
LD (POINT1),A
CALL START
LD A,(DEVADR)
RES 0,A ;Write Mode
CALL PUTBYTE
CALL GETACK
JP C,NOACK
LD A,0 ;ADR EEPROM
POINT1 EQU $-1
CALL PUTBYTE
CALL GETACK
JP C,NOACK
CALL START
LD A,(DEVADR)
SET 0,A ;Read Mode
CALL PUTBYTE
CALL GETACK
JP C,NOACK
CALL GETBYTE
CALL STOP
AND A
RET
READ
CALL START
LD A,(DEVADR)
SET 0,A ;Read Mode
CALL PUTBYTE
CALL GETACK
JR C,NOACK
DEC DE
LOOPRD
CALL GETBYTE
LD (HL),A
INC HL
CALL GIVEACK
DEC DE
LD A,E
OR D
JR NZ,LOOPRD
CALL GETBYTE
LD (HL),A
CALL STOP
AND A
RET
NOACK
CALL PRI_T
DEFB "Error! No ACKNOWLEDGE Signal From SLAVE IC",0
CALL STOP
SCF
RET
WRITEBYTE
LD (POINT2),A
LD A,C
LD (WBYTE),A
CALL START
LD A,(DEVADR)
RES 0,A ;Write Mode
CALL PUTBYTE
CALL GETACK
JP C,NOACK
;
LD A,0 ;ADR EEPROM
POINT2 EQU $-1
CALL PUTBYTE
CALL GETACK
JP C,NOACK
;
LD A,0
WBYTE EQU $-1
CALL PUTBYTE
CALL GETACK
JP C,NOACK
;
CALL STOP
AND A
RET
RND_WRITE
LD (POINT3),A
CALL START
LD A,(DEVADR)
RES 0,A ;Write Mode
CALL PUTBYTE
CALL GETACK
JP C,NOACK
;
LD A,0 ;ADR EEPROM
POINT3 EQU $-1
CALL PUTBYTE
CALL GETACK
JP C,NOACK
RNDWR
LD A,(HL)
INC HL
CALL PUTBYTE
CALL GETACK
JP C,NOACK
DEC DE
LD A,E
OR D
JR NZ,RNDWR
;
CALL STOP
AND A
RET
PRINTB
LD (PRINTBY),A
PUSH BC
PUSH HL
CALL PRI_T
DEFB #1E,0,2
PRINTBY EQU $-1
DEFB "Addr| +0 +1 +2 +3 +4 +5 +6 +7 +8 "
DEFB "+9 +A +B +C +D +E +F",13
DEFB #1F,"-",53,13,0
POP HL
PUSH HL
CALL PRIHEX
LD A,":"
CALL PRIA
LD A," "
CALL PRIA
POP HL
POP BC
PRINTB1
LD A,(HL)
INC HL
PUSH BC
PUSH HL
CALL PRIHB
LD A," "
CALL PRIA
LD A,(TMPX)
CP 48+6
JR C,NOEN
CALL PRI_T
DEFB 13,0
POP HL
PUSH HL
CALL PRIHEX
LD A,":"
CALL PRIA
LD A," "
CALL PRIA
NOEN
POP HL
POP BC
DEC BC
LD A,C
OR B
JR NZ,PRINTB1
RET
GIVEACK
PUSH AF
XOR A
OUT (SDA),A ;SDA -> 0
CALL PAUSE
LD A,#FF
OUT (SCL),A ;SCL -> 1
CALL PAUSE
XOR A
OUT (SCL),A ;SCL -> 0
CALL PAUSE
LD A,#FF
OUT (SDA),A ;SDA -> 1
CALL PAUSE
POP AF
RET
GETACK
LD A,#FF
OUT (SDA),A ;SDA -> 1
CALL PAUSE
OUT (SCL),A ;SCL -> 1
CALL PAUSE
LD BC,ACKTIME
GETA1
DEC BC ;Counter of Wait
LD A,C
OR B
JR Z,GETERR
IN A,(SDA) ;Wait To SDA=0
BIT 0,A
JR NZ,GETA1
XOR A
OUT (SCL),A ;SCL -> 0
CALL PAUSE
RET
GETERR
XOR A
OUT (SCL),A
CALL PAUSE
SCF ;Set CARRY -> NO ACK
RET
PAUSEDE
DEC DE
LD A,E
OR D
JR NZ,PAUSEDE
RET
GETBYTE
LD B,8
GETBL
LD A,#FF
OUT (SCL),A ;SCL -> 1
CALL PAUSE
IN A,(SDA)
RRA
RL C
XOR A
OUT (SCL),A ;SCL -> 0
CALL PAUSE
DJNZ GETBL
;
LD A,#FF
OUT (SDA),A ;SDA -> 1
CALL PAUSE
LD A,C
RET
PUTBYTE
LD B,8
PUTBL
RLA
PUSH AF
LD A,#FF
JR C,PUTB1
LD A,0
PUTB1
OUT (SDA),A
CALL PAUSE
LD A,#FF
OUT (SCL),A ;SCL -> 1
CALL PAUSE
LD A,0
OUT (SCL),A ;SCL -> 0
CALL PAUSE
POP AF
DJNZ PUTBL
;
LD A,#FF
OUT (SDA),A ;SDA -> 1
CALL PAUSE
RET
START
PUSH AF
LD A,#FF
OUT (SCL),A ;SCL -> 1
CALL PAUSE
XOR A
OUT (SDA),A ;SDA -> 0
CALL PAUSE
OUT (SCL),A ;SCL -> 0
CALL PAUSE
LD A,#FF
OUT (SDA),A ;SDA -> 1
CALL PAUSE
POP AF
RET
STOP
PUSH AF
XOR A
OUT (SDA),A ;SDA -> 0
CALL PAUSE
LD A,#FF
OUT (SCL),A ;SCL -> 1
CALL PAUSE
OUT (SDA),A ;SDA -> 1
CALL PAUSE
POP AF
RET
PAUSE
PUSH AF
LD A,BORDER2
OUT (#FE),A
PUSH BC
LD B,PTIME
DJNZ $
POP BC
LD A,BORDER
OUT (#FE),A
POP AF
RET
PRESSP LD A,#7F
IN A,(#FE)
RRA
JR C,PRESSP
RET
;
PRI_T POP HL
CALL PRI_BB
JP (HL)
PRI_BB LD A,(HL)
INC HL
AND A
RET Z ;0 - Exit
CP 13
JR NZ,PRI_BB0
EX DE,HL
LD HL,TMPX
LD (HL),0
INC HL
LD A,(HL)
CP 23
JR Z,PRIBB0
INC (HL)
PRIBB0
CALL KOOR_Y
JR PRI_BB
PRI_BB0 CP #FF ;Inverse
JR NZ,PRI_BB1
LD A,(INVERSE)
XOR #FF
LD (INVERSE),A
JR PRI_BB
PRI_BB1 CP #20
JR C,PRI_BB2 ;<#20 - Attr Code
PUSH HL
CALL PRIA
POP HL
JR PRI_BB
PRI_BB2 CP #1F ;Fill
JR NZ,PRI_BB3
LD A,(HL) ;Symbol Fill
INC HL
LD B,(HL) ;Num Fill
INC HL
PUSH HL
PRI_BB4 PUSH BC
PUSH AF
CALL PRIA
POP AF
POP BC
DJNZ PRI_BB4
POP HL
JR PRI_BB
PRI_BB3 CP #1E ;Set Koord
JR NZ,PRI_BB5
LD E,(HL)
INC HL
LD D,(HL)
INC HL
LD (TMPX),DE
EX DE,HL
CALL KOOR_Y
JR PRI_BB
PRI_BB5 CP #1D ;Set X Koor
JR NZ,PRI_BB6
LD A,(HL)
INC HL
LD (TMPX),A
JR PRI_BB
PRI_BB6 CP #1C ;Clear Screen
JR Z,PRI_BB7
LD C,A ;1-#1B Add X Koor
LD A,(TMPX) ;(Without #0D)
ADD A,C
LD (TMPX),A
JR PRI_BB
PRI_BB7 PUSH HL
CALL CLSCR
LD HL,0
LD (TMPX),HL
CALL KOOR_Y
POP HL
JP PRI_BB
PRIHEX LD A,H
PUSH HL
CALL PRIHB
POP HL
LD A,L
PRIHB PUSH AF
RRCA
RRCA
RRCA
RRCA
CALL PRITET
POP AF
PRITET AND #0F
ADD A,#90
DAA
ADC A,#40
DAA
;==============================
PRIA LD E,A ;Symbols Print
LD A,(TMPX)
LD C,A
SRL A
LD HL,0
FOADRS EQU $-2
ADD A,L
LD L,A
LD A,C
RRA
LD D,FONT/256
LD C,0
INVERSE EQU $-1
LD B,#0F
JR C,NOCHET
LD B,#F0
NOCHET LD A,(DE)
XOR C
XOR (HL)
AND B
XOR (HL)
LD (HL),A
INC H
INC D
LD A,(DE)
XOR C
XOR (HL)
AND B
XOR (HL)
LD (HL),A
INC H
INC D
LD A,(DE)
XOR C
XOR (HL)
AND B
XOR (HL)
LD (HL),A
INC H
INC D
LD A,(DE)
XOR C
XOR (HL)
AND B
XOR (HL)
LD (HL),A
INC H
INC D
LD A,(DE)
XOR C
XOR (HL)
AND B
XOR (HL)
LD (HL),A
INC H
INC D
LD A,(DE)
XOR C
XOR (HL)
AND B
XOR (HL)
LD (HL),A
INC H
INC D
LD A,(DE)
XOR C
XOR (HL)
AND B
XOR (HL)
LD (HL),A
INC H
INC D
LD A,(DE)
XOR C
XOR (HL)
AND B
XOR (HL)
LD (HL),A
LD HL,TMPX
INC (HL)
INC HL
RET
KOOR_Y LD H,TABSCR/256
LD A,(TMPY)
ADD A,A
LD L,A
LD A,(HL)
INC HL
LD H,(HL)
LD L,A
LD (FOADRS),HL
EX DE,HL
RET
CLSCR LD HL,#4000
LD E,L
LD D,H
INC DE
LD (HL),L
LD BC,#17FF
LDIR
INC DE
INC HL
LD (HL),7
LD BC,#2FF
LDIR
RET
DEVADR DEFB #A6 ;Address of Device EEPROM 24C02
TMPX DEFB 0
TMPY DEFB 0
;
;
ORG #B700
TABSCR DEFW #4000,#4020,#4040,#4060,#4080,#40A0
DEFW #40C0,#40E0,#4800,#4820,#4840,#4860
DEFW #4880,#48A0,#48C0,#48E0,#5000,#5020
DEFW #5040,#5060,#5080,#50A0,#50C0,#50E0
;
ORG #B800
FONT
; .INCBIN FONT
.RUN #8000