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;***********************************************************************
;*
;* Number : **.**
;* File Name :"Main.asm"
;* Title :Keymatrix interface to AT PS/2
;*
;* Date (Orig.) :2001.09.13.
;* Date (Last) :2001.10.14.
;* Version :1.1.0
;* Support telephone :+36-30-9541-658
;* Support fax :+36-30-9809-372
;* Support E-mail :info@vfx.hu
;* Target MCU :AT90S8515
;*
;* DESCRIPTION
;* kezeli a kovetkezo eszkozoket:
;* - 84 key
;* - 6 LED
;* - 16,11,11x Jacksly??
;* - PS/2 style interface to AT or MARGOR CP-01
;*
;* AT90S8515 PLCC Pin discriptions
;*
;* ROW0 T0 (PB0) VCC
;* ROW1 T1 (PB1) (PA0) AD0 D0
;* ROW2 AIN0 (PB2) (PA1) AD1 D1
;* ROW3 AIN1 (PB3) (PA2) AD2 D2
;* ROW4 SS (PB4) (PA3) AD3 D3
;* LED3 * MOSI (PB5) (PA4) AD4 D4
;* LED4 * MISO (PB6) (PA5) AD5 D5
;* LED5 * SCK (PB7) (PA6) AD6 D6
;* RESET (PA7) AD7 D7
;* LED0 RxD (PD0) ICP
;* LED1 TxD (PD1) ALE
;* KCLK INT0 (PD2) OC1B
;* KDATA INT1 (PD3) (PC7) A15 D8
;* LED2 (PD4) (PC6) A14 D9
;* ROW5 OC1A (PD5) (PC5) A13 D10
;* ROW6 WR (PD6) (PC4) A12 D11
;* ROW7 RD (PD7) (PC3) A11 D12
;* XTAL2 (PC2) A10 D13
;* XTAL1 (PC1) A9 D14
;* GND (PC0) A8 D15
;*
;* Quarc: f=3.6864 MHz (T=0.27126 us)
;*
;***********************************************************************
.include "8515def.inc"
;**********************!!!!!!!!!!!!!!!!!!!!!!***************************
;* R15 regisztert modositani tilos!
;* Atjaro az interrupt rutinok es a foprogram kozott!!!!
; 0. = 1 ismetles kell a bill.nyomas utan, Timer lejart
;**********************!!!!!!!!!!!!!!!!!!!!!!***************************
;**************************************************************************
;* Const Def
.EQU BaudRate=23 ;23 - 9600 @3.6864MHz
.EQU T0Freq=227 ;220 @1.8432MHz/1024 = 50Hz
;184 @3.6864MHz/1024 = 50Hz
;220 @7.3728MHz/1024 = 200Hz
;227 @7.3728MHz/64 = 4000Hz/250us
;238 @3.6864MHz/1024 = 200Hz
;250 @3.6864MHz/1024 = 600Hz
.EQU ONESEC=200 ;for 1s
.EQU FlashPeriod=1000 ;LEDek villogasi periodusa ~250us egysegekben
;***************************************************************************
;***** Hardware Abstraction Layer
.EQU DTLo_PORT = DDRA
.EQU DTHi_PORT = DDRC ;2x8 bit adat port Pull-upos kell
.EQU Row0 = 0 ;PortB kiosztasa
.EQU Row1 = 1
.EQU Row2 = 2
.EQU Row3 = 3
.EQU Row4 = 4
.EQU LED3 = 5 ;LED3
.EQU LED4 = 6 ;LED4
.EQU LED5 = 7 ;LED5
.EQU LED345 = PORTB
.EQU Row01234 = PORTB
.EQU LED0 = 0 ;PortD kiosztasa LED0
.EQU LED1 = 1 ;LED1
.EQU LED2 = 4 ;LED2
.EQU Row5 = 5
.EQU Row6 = 6
.EQU Row7 = 7
.EQU LED012 = PORTD
.EQU Row567 = PORTD
;******************************************************************************
;**** VARIABLES
.DSEG
Flag1: .BYTE 1 ;Flagbitek
;2 = paros/paratlan szamlalo led villogtatashoz
;1:0 = scan mode 01 = scan1, 10 = scan2, 11 = scan3
CNT1L: .BYTE 1
CNT1H: .BYTE 1 ;software Timer
CNT2L: .BYTE 1
CNT2H: .BYTE 1 ;LED villogtatas freki
KeyHead: .BYTE 1 ;Bill. puffer eleje
KeyTrail:.BYTE 1 ;Bill. puffer vege
WTime: .BYTE 2 ;Bill.nyomas utan a varakozas ido
WRep: .BYTE 2 ;Bill.nyomas utan a ismetlesi ido
PS2Flag: .BYTE 1 ;PS2 flag csak az int. rutin hasznalhatja
;3. = 1 Parameterre var, komunikacio kozben vagyunk
;2. = 1 Request resend
;1. = 1 Resend last data to host
;0. = 1 Send ACK
PS2NextA:.BYTE 2 ;PS2 program cim, ahova a kovetkezo int ugrik
LastSend:.BYTE 1 ;PS2 Utoljara kuldott kod
RepChar: .BYTE 1 ;karakter sorszama amit ismetelni kell
StatLEDs:.BYTE 2 ;STAUS LEDek allapota eg / nem eg
;masodik byte a villogas mask byte-ja
ParamErr:.BYTE 1 ;parameterre max 4ms ideig var utana hiba
.EQU KeyBuffLen = 17
KeyBuff: .BYTE KeyBuffLen ;Transmit key-buffer
.EQU KeyCount = 128 ;max 128 bill.,de csak 119 db billenyut kell kezelni
Matrix: .BYTE KeyCount ;Keys allapota
;**************************************************************************************
.ESEG
.db "MAGOR HI-01 Keyboard-matrix Controller by VFX. V1.1.0 [orig. 2001.09.16] "
.db "Last Upd. [2001.10.14] Info: info@vfx.hu Data area>>"
;*****************************************************************************
;**** I N T E R R U P T S
;****
;*****************************************************************************
.CSEG
rjmp RESET ; Reset Handler
rjmp EXT_INT0 ; IRQ0 Handler
rjmp EXT_INT1 ; IRQ1 Handler
rjmp TIM1_CAPT ; Timer1 Capture Handler
rjmp TIM1_COMPA ; Timer1 CompareA Handler
rjmp TIM1_COMPB ; Timer1 CompareB Handler
rjmp TIM1_OVF ; Timer1 Overflow Handler
rjmp TIM0_OVF ; Timer0 Overflow Handler
rjmp SPI_INT ; SPI Transfer Complete Handler
rjmp UART_RXC ; UART RX Complete Handler
rjmp UART_DRE ; UDR Empty Handler
rjmp UART_TXC ; UART TX Complete Handler
rjmp ACI_INT ; Analog Comparator Handler
;*********************
EXT_INT0: RETI
EXT_INT1: RETI
TIM1_CAPT: RETI
;************************
;* Key Deleay & Rep Time
;************************
TIM1_COMPA: PUSH ZL
IN ZL,SREG
PUSH ZL
ldd ZL,Y+WRep+1-RAMSTRT
out OCR1AH,ZL
ldd ZL,Y+WRep+0-RAMSTRT
out OCR1AL,ZL ;rep. timer beallitasa
ldi ZL,1
or R15,Zl ;timer lejart ismetles mehet Flag
POP ZL
OUT SREG,ZL
POP ZL
RETI
;**
TIM1_COMPB: RETI
TIM1_OVF: RETI
;*********************
;* RealTime Clock Int
;*********************
;*
TIM0_OVF: PUSH ZL
PUSH ZH
IN ZL,SREG
PUSH ZL
LDI ZL,T0Freq
OUT TCNT0,ZL ;Reload Timer
LDD ZL,Y+CNT1L-RAMSTRT
LDD ZH,Y+CNT1H-RAMSTRT
OR ZL,ZH
BREQ TIM_01
LDD ZL,Y+CNT1L-RAMSTRT
SBIW ZL,1
STD Y+CNT1L-RAMSTRT,ZL
STD Y+CNT1H-RAMSTRT,ZH
TIM_01:
LDD ZL,Y+CNT2L-RAMSTRT
LDD ZH,Y+CNT2H-RAMSTRT
OR ZL,ZH
BREQ TIM_02
LDD ZL,Y+CNT2L-RAMSTRT
SBIW ZL,1
STD Y+CNT2L-RAMSTRT,ZL
STD Y+CNT2H-RAMSTRT,ZH
TIM_02: POP ZL
OUT SREG,ZL
POP ZH
POP ZL
RETI
;********************
;* SPI Int Handle
;********************
SPI_INT: RETI
UART_RXC: RETI
UART_DRE: RETI
UART_TXC: RETI
EPR_INT: RETI
ACI_INT: RETI
;**********************************************************************
;* Iclude files
.include "keyb.asm"
.include "ps2.asm"
.include "EEprom.asm"
;**********************************************************************
;* RESET
;**********************************************************************
RESET: CLI ;GLOBAL INTERRUP DIS.
clr R15 ;Flags!!!
ldi r16, high(RAMEND) ;setup stack
out SPH,r16
ldi r16, low(RAMEND)
out SPL,r16
LDI R16,0b00101010 ;Sleep enable, Idle mode,INT0, INT1 fall-edge sens.
OUT MCUCR,R16 ;7. =1 SRE External SARAM Enabled, Alternate Function
;6. =1 SRW External SRAM WaitStates Enabled
;5. = 1 Sleep Enable
;4. = 0 SLEEP => Idle Mode
; 1 SLEEP => Power Down Mode
;3:2 = Inerrupt Sense Control for INT1
; 00 -> Low Level INT1
; 01 -> Reserved
; 10 -> Falling Edge INT1
; 11 -> Rising Edge INT1
;1:0 = Inerrupt Sense Control for INT0
; 00 -> Low Level INT0
; 01 -> Reserved
; 10 -> Falling Edge INT0
; 11 -> Rising Edge INT0
LDI R16,0b00000000 ;INT0, INT1 Disabled
OUT GIMSK,R16 ;7. = 1 EXT INT1 ACTIVE
;6. = 1 EXT INT0 ACTIVE
LDI R16,0b01000010
OUT TIMSK,R16 ;7. = 1 TC1 OWRF EN. *
;6. = 1 TC1 COMP MATCH EN.
;3. = 1 TC1 INP CAPTURE EN.
;1. = 1 TC0 OWRF EN. *
LDI YL,LOW(RAMSTRT)
LDI YH,HIGH(RAMSTRT) ;BAZIS 'Y' +0
;************************************************************************
;*Prot/Keymatrix and Hardware Init
;*
ldi R16,255
STD Y+RepChar-RAMSTRT,R16 ;ismetelhetettlen karakter sorszam
clr R17
out DTLo_PORT,R17
out DTLo_PORT+1,R16 ;Lower 8 data bit Input & Pull up
out DTHi_PORT,R17
out DTHi_PORT+1,R16 ;Higher 8 data bit Input & Pull up
out DDRB,R16
out DDRB+1,R16 ;Row0..4 output & H, LED3,4,5 Nem vilagit
ldi R17,255-(1< OC1 not connected ; Disconnect OC1A
; 01 => OC1 not connected ; Togle OC1A
; 10 => OC1 non-inv PWM ; Clear OC1A
; 11 => OC1 inverted PWM ; Set OC1A
;5:4 00 => OC1 not connected "" OC1B
; 01 => OC1 not connected ""
; 10 => OC1 non-inverted PWM ""
; 11 => OC1 inverted PWM ""
;1:0 00 => PWM Disabled
; 01 => 8 bit PWM
; 10 => 9 bit PWM
; 11 => 10 bit PWM
LDI R17,0b00001000
OUT TCCR1B,R17 ;7. = 0 Input Capture Noise Canceller Disabled
;6. = 0 InputCapture ICP Falling edge
;3. = 1 Reset TC1 when copare match
;2:0 Clock select
; 000 => TC1 Stop
; 001 => Ck
; 010 => Ck/8
; 011 => Ck/64
; 100 => Ck/256
; 101 => Ck/1024
; 110 => External T1 Falling Edge
; 111 => External T1 rising Edge
;************************************
;** Timer0 Init *****
;**
LDI R16,T0Freq
OUT TCNT0,R16 ;megszakitas frekvenciaja
LDI R16,0b00000011
OUT TCCR0,R16 ;TC0 Control Register
;2:0 Clock Select
; 000 -> Stop
; 001 -> CK
; 010 -> CK/8
; 011 -> CK/64
; 100 -> CK/256
; 101 -> CK/1024
; 110 -> External pin T0 falling edge
; 111 -> External pin T0 risinrg edge
SEI ;SET GLOBAL INT EN.
CBI LED012,LED0 ;LEDx vilagit
CBI LED012,LED1
CBI LED012,LED2
CBI LED345,LED3
CBI LED345,LED4
CBI LED345,LED5
ldi R16,Low(ONESEC)
STD Y+CNT1L-RAMSTRT,R16 ;software down counter, wait for 1s
ldi R16,High(ONESEC)
STD Y+CNT1H-RAMSTRT,R16
wait1: LDD R16,Y+CNT1L-RAMSTRT
LDD R17,Y+CNT1H-RAMSTRT
or R16,R17
brne wait1
SBI LED012,LED0 ;LEDx nem vilagit
SBI LED012,LED1
SBI LED012,LED2
SBI LED345,LED3
SBI LED345,LED4
SBI LED345,LED5
ldi ZL,low(0) ;led villogtatas kb 0.5s
STD Y+CNT2L-RAMSTRT,ZL
ldi ZH,high(0)
STD Y+CNT2H-RAMSTRT,ZH
;***********************************************************************
;***********************************************************************
;******** M A I N ********
;******** ********
;***********************************************************************
WWW: ldi ZL,low(40)
STD Y+CNT1L-RAMSTRT,ZL
ldi ZH,high(40)
STD Y+CNT1H-RAMSTRT,ZH
Main: SLEEP
rcall PS2_Com
LDD ZL,Y+CNT2L-RAMSTRT
LDD ZH,Y+CNT2H-RAMSTRT
OR ZL,ZH
BRNE LEDkihagy
ldi ZL,low(FlashPeriod) ;led villogtatas kb 0.5s
STD Y+CNT2L-RAMSTRT,ZL
ldi ZH,high(FlashPeriod)
STD Y+CNT2H-RAMSTRT,ZH
LDD R16,Y+Flag1-RAMSTRT
ldi R17,0b0000100
eor R16,R17
STD Y+Flag1-RAMSTRT,R16 ;paros/paratlan bit valtas
rcall Puts_LEDs
LEDkihagy: LDD R16,Y+CNT1L-RAMSTRT
cpi R16,0
brne Main
rcall ScanMatrix ;keymatrix beolvasasa a memoriaba
rcall MakeScanC
rjmp WWW
;* LEd 7 6 5 4 3 2 1 0
;* 3P 2P 1P 3Z 2Z 1Z
Puts_LEDs: LDD R16,Y+Flag1-RAMSTRT
andi R16,4 ;D0 = Paros/paratlan bit
ldi R18,0b00000111 ;csak zoldek villognak
breq paros
ldi R18,0b00111000 ;csak pirosak villognak
paros: LDD R16,Y+StatLEDs+1-RAMSTRT ;villogas mask = 1 villog
and R18,R16
LDD R16,Y+StatLEDs+0-RAMSTRT ;LED data = 1 villagit
or R16,R18
com R16
andi R16,0b00111111 ;inv. kell mert kozos anodosak a ledek
mov R17,R16
rol R17
rol R17
andi R17,0b00010000
mov R18,R16
andi R18,0b00000011
or R17,R18 ;ez megy ki a PD portra, zold ledek
in R18,LED012
andi R18,0b11101100
or R18,R17
out LED012,R18 ;LED0,1,2 kikuldve
rol R16
rol R16
andi R16,0b11100000
in R17,LED345
andi R17,0b00011111
or R17,R16
out LED345,R17 ;LED3,4,5 kikuldve
ret
;***********************************************************************
;*
;* File Name :"PS2.asm"
;* Title :PS/2 communication protocoll
;*
;* Date (Orig.) :2001.10.06.
;* Date (Last) :2001.10.12.
;* Version :1.0.10
;* Support telephone :+36-30-9541-658
;* Support fax :+36-30-9809-372
;* Support E-mail :info@vfx.hu
;* Target MCU :AT90S8515
;*
;* DESCRIPTION
;* - PS/2 style communication to AT or MARGOR CP-01
;*
;* CLK & DATA = H -> Two way communication
;* DATA = L -> PC (MAGOR) sends to Keyb
;* CLK = L -> PC (MAGOR) inhibits communiaction
;**************************************************************************
;* Const Def
;***************************************************************************
;***** Hardware Abstraction Layer
.EQU PS2_CLKPort = DDRD
.EQU PS2_DATPort = DDRD
.EQU KCLK = 2
.EQU KDATA = 3
;******************************************************************************
;**** VARIABLES
.DSEG
.EQU NoError = 0 ;No Error
.EQU RxF_Abort = 2 ;Abort communication
.EQU TxBreak = 3 ;Abort Transmit
.EQU Parity_Err= 4 ;Parity Error
;******************************************************************************
.ESEG
;******************************************************************************
.CSEG
Init_PS2: CBI PS2_CLKPort,KCLK
CBI PS2_CLKPort+1,KCLK ;CLK pin tre-stated external pull-up res!!
CBI PS2_DATPort,KDATA
CBI PS2_DATPort+1,KDATA ;DATA pin tre-stated external pull-up res!!
ldi R16,0
STD Y+PS2NextA+0-RAMSTRT,R16
STD Y+PS2NextA+1-RAMSTRT,R16 ;nincs aktiv komunikacio folyamatban
STD Y+PS2Flag-RAMSTRT,R16
ret
;******************************************************************************
;** Communication between Host and Keyboard
;**
;******************************************************************************
PS2_Com: sbis PS2_CLKPort-1,KCLK
ret ;if clk pin low, comm. inhibit
sbis PS2_DATPort-1,KDATA
rjmp RxCommand ;if data pin low, HOST sends command/data
LDD R16,Y+PS2Flag-RAMSTRT ;Request Resend?
andi R16,0b00000100
breq Ps2_C2
ldi R16,0xFE ;RESEND Command
mov R1,R16
rcall SendByte ;keres elkuldese
brcs ResSendERR
LDD R16,Y+PS2Flag-RAMSTRT ;Request Resend flag torlese
andi R16,0b11111011
STD Y+PS2Flag-RAMSTRT,R16
ret
Ps2_C2: LDD R16,Y+PS2Flag-RAMSTRT ;Resend last data?
andi R16,0b00000010
breq Ps2_C0
ldd R1,Y+LastSend-RAMSTRT ;utoljara kuldott karakter ismetleshez
rcall SendByte ;ujrakuldes
brcs ResSendERR
LDD R16,Y+PS2Flag-RAMSTRT ;Resend flag torlese
andi R16,0b11111101
STD Y+PS2Flag-RAMSTRT,R16
ResSendERR: ret ;ha hiba volt ujra kuldjuk
Ps2_C0: LDD R16,Y+PS2Flag-RAMSTRT ;Send ACK flag active?
andi R16,0b00000001
breq Ps2_C1
ldi R16,0xFA ;Send ACK to HOST
mov R1,R16
rcall SendByte
brcs ResSendERR ;ha hiba van ujrakuldes lesz
LDD R16,Y+PS2Flag-RAMSTRT ;Host Abort
andi R16,0b11111110 ;ACK flag torlove sikeresen elment
STD Y+PS2Flag-RAMSTRT,R16 ;komunikacio nincs
ret
Ps2_C1: LDD R16,Y+PS2Flag-RAMSTRT ;Parameterre var?
andi R16,0b00001000
breq Ps2_C3 ;ha nem, akkor hadmenjen
LDD R16,Y+ParamErr-RAMSTRT ;parameterr error counter>4ms -> igen, hiba
inc R16
cpi R16,20 ;20*250us ido ~4..5ms
brcs Megidovan ;idotullepes!!
LDD R16,Y+PS2Flag-RAMSTRT ;Parameterre var bit torlese, nem varunk tovabb!
andi R16,0b11110111
STD Y+PS2Flag-RAMSTRT,R16
clr R16
STD Y+PS2NextA+0-RAMSTRT,R16
STD Y+PS2NextA+1-RAMSTRT,R16 ;alapallapotba hozas!
Megidovan: STD Y+ParamErr-RAMSTRT,R16
ret
Ps2_C3: LDD ZL,Y+PS2NextA+0-RAMSTRT
LDD ZH,Y+PS2NextA+1-RAMSTRT
mov R16,ZL
or R16,ZH ;ha nincs komunikacio folyamatban
breq SendScan ;akkor kuldjunk scan kodot
ijmp ;ugras a komunikacios rutinra
;********************************************
;** Send scan/fifo
;********************************************
SendScan: ldi ZL,Low(KeyBuff)
ldi ZH,High(KeyBuff)
LDD R0,Y+KeyHead-RAMSTRT
LDD R16,Y+KeyTrail-RAMSTRT
cp R0,R16
brne SendScn1
ret
SendScn1: clr R0
add Zl,R16
adc ZH,R0
ld R1,Z
inc R16
cpi R16,KeyBuffLen
brcs SendScn2
clr R16
SendScn2: STD Y+KeyTrail-RAMSTRT,R16 ;uj pointer elmentve
rcall SendByte
brcc NoSendErr ;nincs hiba siman elment
LDD R16,Y+PS2Flag-RAMSTRT ;Resend flag beallitasa
ori R16,0b00000010
STD Y+PS2Flag-RAMSTRT,R16
NoSendErr: ret
;*****************************************
;** Send R1 to Host
;** C=1 hiba tortent R17= hibakod
;*****************************************
SendByte: sbis PS2_CLKPort-1,KCLK
rjmp SendByte ;wait for clk=hi
rcall Delay45us
rcall Delay5us ;wait 50us
sbis PS2_CLKPort-1,KCLK
rjmp SendByte ;wait for clk=hi
sec
std Y+LastSend-RAMSTRT,R1 ;utoljara kuldott karakter
ldi R17,TxBreak ;R17= Transmit break
sbis PS2_DATPort-1,KDATA ;Is Data still hi?
ret ;ha nem,vissza R17 hibakod!
rcall Delay40us
clr R0 ;R0=0 start bit
rcall SendBit
brcs SendAborted
ldi R16,8
mov R3,R16
mov R0,R1
clr R2
SendLoop: rcall SendBit
brcs SendAborted
dec R3
brne SendLoop
inc R2 ;paratlan paritas kell!!!!!???
mov R0,R2
rcall SendBit
clr R0
dec R0 ;R0=255 stop bit =H
rcall SendBit
rcall Delay15us
rcall Delay15us
ldi R17,NoError
clc
ret
SendAborted: ldi R17,TxBreak ;R17= Transmit break
sec
ret
;* C=1 break, C=0 normal transmit
SendBit: ror R0 ;0. bit -> C
brcc bit0
bit1: CBI PS2_DATPort,KDATA ;DATA pin H
inc R2 ;paritas no egyel
rjmp bitn
bit0: SBI PS2_DATPort,KDATA ;DATA pin L
bitn: rcall Delay20us
SBI PS2_CLKPort,KCLK ;clk = L
rcall Delay40us
CBI PS2_CLKPort,KCLK ;clk = H
rcall Delay20us
clc
sbis PS2_CLKPort-1,KCLK ;Clock=high?
sec ;if no -> C=1
ret
;******************************************************************************
;* R E C E I V E
;*
;* 80 us/bit device generated clock - host changes the Data line only when
;* the Clock line is low, and data is latched on the rising edge of the clock pulse
;* Host may abort transmission at time before the 11th clock pulse (acknowledge bit)
;* by holding Clock low for at least 100 microseconds.
;*
;* Uses:R1,R2,R17,R18
RxStream: sbis PS2_CLKPort-1,KCLK ;Wait for Clock=high
rjmp RxStream
sbic PS2_DATPort-1,KDATA ;Is Data still low?
rjmp RxErr ;ha nem, akkor hiba!
;Read each bit (8 data bits, parity bit, and stop bit) as follows:
clr R1 ;data reg.
clr R2 ;parity reg.
ldi R17,8 ;8 bit
RxBitLoop: rcall RxBit ;R18-ban a bit
add R2,R18
ror R18 ;adatbit a C flagben
ror R1
sbis PS2_CLKPort-1,KCLK ;Clock=high?
rjmp RxAbort ;if no then Abort
dec R17
brne RxBitLoop
;Read parity bit
rcall RxBit ;R18-ban a bit
inc R2 ;paratlan paritas kell!!??!!!?????
eor R2,R18 ;R2 = parity xor parity bit
sbis PS2_CLKPort-1,KCLK
rjmp RxAbort
;Read stop bit
rcall RxBit ;R18-ban a bit
sbis PS2_CLKPort-1,KCLK
rjmp RxAbort
sbis PS2_DATPort-1,KDATA ;Is Data still low?
rjmp RxErr1 ;Data still equals 0?
;Output Acknowledge bit
rcall SendAckBit ;Acknowledge bit
rcall Delay45us ;Delay 45 microseconds
;(to give host time to inhibit
;next transmission.)
ldi R17,0 ;no error flag
ror R2 ;C-flagben a parity
brcs RxParErr
ret ;R1 = reseived data
RxParErr: ldi R17,Parity_Err ;Parity Error
sec ;C flag =0
ret
RxAbort: ldi R17,RxF_Abort ;Abort
sec ;C flag =0
ret
;*Keep clocking until Data=1 then generate an error
RxErr1: rcall RxBit
sbis PS2_DATPort-1,KDATA ;Is Data still low?
rjmp RxErr1 ;ha nem, akkor hiba! ;Data still equals 0? Keep clocking until Data=1 then generate an error
RxErr:
ret
;Read a bit
RxBit: rcall Delay20us
SBI PS2_CLKPort,KCLK ;clk = L
rcall Delay40us
CBI PS2_CLKPort,KCLK ;clk = H
rcall Delay20us
clr R18
sbic PS2_DATPort-1,KDATA
ldi R18,1 ;R18 a beolvasott adatbit
ret
;Send the acknowledge bit
SendAckBit: rcall Delay15us
SBI PS2_DATPort,KDATA ;data = L
rcall Delay5us
SBI PS2_CLKPort,KCLK ;clk = L
rcall Delay40us
CBI PS2_CLKPort,KCLK ;clk = H
rcall Delay5us
CBI PS2_DATPort,KDATA ;data = H
ret
;******************************************************************************
;* Delayxxus
;*
;*rcall [3] + wait [xx] +ret [4] = Delay
;* @7.3728MHz
;* 45 us [332cycl
;* 40 us [296cycl
;* 20 us [148cycl
;* 10 us [74cycl]
;* 5 us [37cycl]
Delay45us: ldi R16,104 ;[1] 104*3+10 cycl
rjmp DelayLoop ;[2]
Delay5us: ldi R16,9 ;[1] 9*3+10 cycl
rjmp DelayLoop ;[2]
Delay15us: ldi R16,34 ;[1] 34*3+10 cycl
rjmp DelayLoop ;[2]
Delay20us: ldi R16,46 ;[1] 46*3+10 cycl
rjmp DelayLoop ;[2]
Delay40us: ldi R16,96 ;[1] 96*3 cycl
DelayLoop: dec R16 ;[1]
brne DelayLoop ;[1/2]
ret ;[4]
;*******************************************
;** Host request to send... receive data
;**
;*******************************************
RxCommand: LDD ZL,Y+PS2NextA+0-RAMSTRT
LDD ZH,Y+PS2NextA+1-RAMSTRT
mov R16,Zl
or R16,ZH
breq NewCommand
ijmp ;ha nem uj, akkor ugras a vegrehajtasra
NewCommand: rcall RxStream ;Read data R1, C=1 hiba, R17 hibakod
brcc RxComNoErr
ReqResend: LDD R16,Y+PS2Flag-RAMSTRT ;Host read error Resend needed
ori R16,0b00000100
STD Y+PS2Flag-RAMSTRT,R16
NoValidComm: ret
RxComNoErr: ldi ZL,Low(2*ComTab) ;uj parancs jott
ldi ZH,High(2*ComTab)
RxCommLoop: lpm
tst R0 ;ha a tabla vege es nincs parancs kihagyjuk
breq NoValidComm
cp R0,R1
breq HitComm
adiw ZL,2*(ComNex-ComTab) ;kovetkezo parancs
rjmp RxCommLoop
HitComm: adiw ZL,2 ;pointerre mutat
lpm
mov R1,R0 ;low byte
adiw ZL,1
lpm
mov ZH,R0 ;hi byte
mov ZL,R1
ijmp ;ugras a parancs vegrehajtasara
ComTab: .dw 0xED,STATUS_IND ;Turns on/off LEDs
ComNex: .dw 0xEE,ECHO ;Echo
.dw 0xF0,ALT_SCAN ;Set Scan Code Set
.dw 0xF3,TYPE_RATE ;Set repeat rate
.dw 0xF4,KEN ;Enables keysacnning
.dw 0xF5,KDIS ;Disable keyscanning
.dw 0xF6,SET_DEF ;Set Default Value
.dw 0xF7,ALL_TYPE ;Set all keys - Typematic
.dw 0xF8,ALL_BREAK ;Set all keys - Make/Break
.dw 0xF9,ALL_MAKE ;Set all keys - Make
.dw 0xFA,ALL_MTB ;Set all keys - Typematic/Make/Break
.dw 0xFB,KEY_TYPE ;Set ket type - Typematic
.dw 0xFC,KEY_BREAK ;Set ket type - Make/Break
.dw 0xFD,KEY_MAKE ;Set ket type - Make
.dw 0xFE,RESEND ;Resend
.dw 0xFF,KRES ;Reset Command
.dw 0xF2,READID ;Read ID Command
.dw 0x00 ;ez az utolso sor!
Read_Data: rcall RxStream ;Read data R1, C=1 hiba, R17 hibakod
brcs RD_Err
ret
RD_Err: LDD R16,Y+PS2Flag-RAMSTRT ;Host read error Resend needed
ori R16,0b00000100
STD Y+PS2Flag-RAMSTRT,R16
sec
ret
;******************************************************************************
;* C O M M A N D S from host
;*
;******************************************************************************
;*Set/reset status indicators. A '1' bit turns the indicator ON.
;* 0. Scrollock,LED0 Green
;* 1. Numlock, LED0 Red
;* 2. Capslock, LED1 Green
;* 3. LED1 Red
;* 4. LED2 Green
;* 5. LED2 Red
;* 6. =1 Flash
;* 7. =0
;*******************************************************
STATUS_IND: ldi ZL,Low(StatInd1)
ldi ZH,High(StatInd1)
STD Y+PS2NextA+0-RAMSTRT,ZL
STD Y+PS2NextA+1-RAMSTRT,ZH
LDD R16,Y+PS2Flag-RAMSTRT ;Make ACK & Parameter bit flag active
ori R16,0b00001001
STD Y+PS2Flag-RAMSTRT,R16
ret
StatInd1: rcall Read_Data
brcc SatInd2
ret
SatInd2: mov R16,R1
andi R16,0b01000000 ;flash bit active?
ldi R16,0b00111111
breq noflash
and R16,R1
STD Y+StatLEDs+1-RAMSTRT,R16
rjmp SatInd3
noflash: and R16,R1
STD Y+StatLEDs+0-RAMSTRT,R16
SatInd3: LDD R16,Y+PS2Flag-RAMSTRT
andi R16,0b11110111 ;parameter renben megjott, torolve a bit
ori R16,0b00000001 ;ACK kuldes kell
STD Y+PS2Flag-RAMSTRT,R16
rcall Puts_LEDs ;uj led allapot kikuldese
rjmp EndBack
;*******************************************************
ECHO: ldi ZL,Low(Echo1)
ldi ZH,High(Echo1)
STD Y+PS2NextA+0-RAMSTRT,ZL
STD Y+PS2NextA+1-RAMSTRT,ZH
ret
Echo1: ldi R16,0xEE ;Echo valasz a parancsra
mov R1,R16
rcall SendByte ;Send
rjmp EndBack
;*******************************************************
ALT_SCAN: ldi ZL,Low(Altscan1)
ldi ZH,High(Altscan1)
STD Y+PS2NextA+0-RAMSTRT,ZL
STD Y+PS2NextA+1-RAMSTRT,ZH
LDD R16,Y+PS2Flag-RAMSTRT ;Make ACK & Parameter bit flag active
ori R16,0b00001001
STD Y+PS2Flag-RAMSTRT,R16
ret
Altscan1: rcall Read_Data
brcc Altscan2
ret
Altscan2: LDD R16,Y+PS2Flag-RAMSTRT
andi R16,0b11110111 ;parameter renben megjott, torolve a bit
ori R16,0b00000001 ;ACK kuldes kell
STD Y+PS2Flag-RAMSTRT,R16
mov R16,R1 ;parameter byte
andi R16,3 ;csak az alo 2 bit kell
cpi R16,0
breq Lekerdezes
ldd R17,Y+Flag1-RAMSTRT
andi R17,0b11111100 ;scan mode maskolasa
or R17,R16
STD Y+Flag1-RAMSTRT,R17 ;uj scan mode mentese
rjmp EndBack
Lekerdezes: ldi ZL,Low(Scanlek)
ldi ZH,High(Scanlek)
STD Y+PS2NextA+0-RAMSTRT,ZL
STD Y+PS2NextA+1-RAMSTRT,ZH
ret
Scanlek: ldd R16,Y+Flag1-RAMSTRT
andi R16,0b00000011 ;scan mode maskolasa
inc R16 ;igy lesz 1,2,3 kodtabla
mov R1,R16
rcall SendByte ;Send scan tab kod
rjmp EndBack
;*******************************************************
TYPE_RATE: ldi ZL,Low(TYPE_RATE1)
ldi ZH,High(TYPE_RATE1)
STD Y+PS2NextA+0-RAMSTRT,ZL
STD Y+PS2NextA+1-RAMSTRT,ZH
LDD R16,Y+PS2Flag-RAMSTRT ;Make ACK & Parameter bit flag active
ori R16,0b00001001
STD Y+PS2Flag-RAMSTRT,R16
ret
TYPE_RATE1: rcall Read_Data
brcc TR1
ret ;ha hiba volt: request to resend
TR1: mov R16,R1 ;Bit 7 is unimplemented.
andi R16,0b00011111 ;Bits 6:5 - Repeat Delay
rcall SetWait ;Bits 4:0 - Repeat Rate
mov R16,R1
swap R16
andi R16,0b00000011
rcall SetRep
LDD R16,Y+PS2Flag-RAMSTRT ;Make ACK flag active
ori R16,0b00000001
STD Y+PS2Flag-RAMSTRT,R16
rjmp EndBack
;*******************************************************
KEN: LDD R16,Y+PS2Flag-RAMSTRT ;Make ACK flag active
ori R16,0b00000001
STD Y+PS2Flag-RAMSTRT,R16
;ide jon a enables code
rjmp EndBack
;*******************************************************
KDIS: LDD R16,Y+PS2Flag-RAMSTRT ;Make ACK flag active
ori R16,0b00000001
STD Y+PS2Flag-RAMSTRT,R16
;ide jon disables code
rjmp EndBack
;*******************************************************
SET_DEF: LDD R16,Y+PS2Flag-RAMSTRT ;Make ACK flag active
ori R16,0b00000001
STD Y+PS2Flag-RAMSTRT,R16
rcall Scan_Init ;Default Scantable
rjmp EndBack
;*******************************************************
ALL_TYPE: LDD R16,Y+PS2Flag-RAMSTRT ;Make ACK flag active
ori R16,0b00000001
STD Y+PS2Flag-RAMSTRT,R16
;ide jon a set code
rjmp EndBack
;*******************************************************
ALL_BREAK: LDD R16,Y+PS2Flag-RAMSTRT ;Make ACK flag active
ori R16,0b00000001
STD Y+PS2Flag-RAMSTRT,R16
;ide jon a set code
rjmp EndBack
;*******************************************************
ALL_MAKE: LDD R16,Y+PS2Flag-RAMSTRT ;Make ACK flag active
ori R16,0b00000001
STD Y+PS2Flag-RAMSTRT,R16
;ide jon a set code
rjmp EndBack
;*******************************************************
ALL_MTB: LDD R16,Y+PS2Flag-RAMSTRT ;Make ACK flag active
ori R16,0b00000001
STD Y+PS2Flag-RAMSTRT,R16
;ide jon a set code
rjmp EndBack
;*******************************************************
KEY_TYPE: ldi ZL,Low(Ktype1)
ldi ZH,High(Ktype1)
STD Y+PS2NextA+0-RAMSTRT,ZL
STD Y+PS2NextA+1-RAMSTRT,ZH
LDD R16,Y+PS2Flag-RAMSTRT ;Make ACK & Parameter bit flag active
ori R16,0b00001001
STD Y+PS2Flag-RAMSTRT,R16
ret
Ktype1: rcall Read_Data
brcc Ktype2
ret
Ktype2: mov R16,R1 ;parameter byte
;ide jon az feldolgozas!!
LDD R16,Y+PS2Flag-RAMSTRT
andi R16,0b11110111 ;parameter renben megjott, torolve a bit
ori R16,0b00000001 ;ACK kuldes kell
STD Y+PS2Flag-RAMSTRT,R16
rjmp EndBack
;*******************************************************
KEY_BREAK: ldi ZL,Low(Kbreak1)
ldi ZH,High(Kbreak1)
STD Y+PS2NextA+0-RAMSTRT,ZL
STD Y+PS2NextA+1-RAMSTRT,ZH
LDD R16,Y+PS2Flag-RAMSTRT ;Make ACK & Parameter bit flag active
ori R16,0b00001001
STD Y+PS2Flag-RAMSTRT,R16
ret
Kbreak1: rcall Read_Data
brcc Kbreak2
ret
Kbreak2: mov R16,R1 ;parameter byte
;ide jon a feldolgozas!!
LDD R16,Y+PS2Flag-RAMSTRT
andi R16,0b11110111 ;parameter renben megjott, torolve a bit
ori R16,0b00000001 ;ACK kuldes kell
STD Y+PS2Flag-RAMSTRT,R16
rjmp EndBack
;*******************************************************
KEY_MAKE: ldi ZL,Low(Kmake1)
ldi ZH,High(Kmake1)
STD Y+PS2NextA+0-RAMSTRT,ZL
STD Y+PS2NextA+1-RAMSTRT,ZH
LDD R16,Y+PS2Flag-RAMSTRT ;Make ACK & Parameter bit flag active
ori R16,0b00001001
STD Y+PS2Flag-RAMSTRT,R16
ret
Kmake1: rcall Read_Data
brcc Kmake2
ret
Kmake2: mov R16,R1 ;parameter byte
;ide jon a feldolgozas!!
LDD R16,Y+PS2Flag-RAMSTRT
andi R16,0b11110111 ;parameter renben megjott, torolve a bit
ori R16,0b00000001 ;ACK kuldes kell
STD Y+PS2Flag-RAMSTRT,R16
rjmp EndBack
;*******************************************************
RESEND: LDD R16,Y+PS2Flag-RAMSTRT ;Resend last data!
ori R16,0b00000010
STD Y+PS2Flag-RAMSTRT,R16
rjmp EndBack
;*******************************************************
;* Keyboard RESET
;*******************************************************
KRES: ldi ZL,Low(KRES1)
ldi ZH,High(KRES1)
STD Y+PS2NextA+0-RAMSTRT,ZL
STD Y+PS2NextA+1-RAMSTRT,ZH
LDD R16,Y+PS2Flag-RAMSTRT ;Make ACK flag active
ori R16,0b00000001
STD Y+PS2Flag-RAMSTRT,R16
ret
KRES1: ldi R16,0xAA ;Basic Assurance Test Result
mov R1,R16
rcall SendByte ;Send Result of BAT
rcall Scan_Init ;Re-init Scantable
ldi R16,0
STD Y+PS2Flag-RAMSTRT,R16 ;Calears Flags
STD Y+StatLEDs+0-RAMSTRT,R16 ;LED nem villagit
STD Y+StatLEDs+1-RAMSTRT,R16 ;LED nem villog
rjmp EndBack
;*******************************************************
READID: ldi ZL,Low(READID1)
ldi ZH,High(READID1)
STD Y+PS2NextA+0-RAMSTRT,ZL
STD Y+PS2NextA+1-RAMSTRT,ZH
LDD R16,Y+PS2Flag-RAMSTRT ;Make ACK flag active
ori R16,0b00000001
STD Y+PS2Flag-RAMSTRT,R16
ret
READID1: ldi ZL,Low(READID2)
ldi ZH,High(READID2)
STD Y+PS2NextA+0-RAMSTRT,ZL
STD Y+PS2NextA+1-RAMSTRT,ZH
ldi R16,0xD0 ;Eredeti: 0xAB
mov R1,R16
rcall SendByte ;Send Result of BAT
ret
READID2: ldi R16,0xDE ;Eredeti: 0x83
mov R1,R16
rcall SendByte
EndBack: ldi R16,0
STD Y+PS2NextA+0-RAMSTRT,R16
STD Y+PS2NextA+1-RAMSTRT,R16
ret
;*******************************************************
;**************************************************************************************
.ESEG
;**************************************
;* Scan kod tabla Scan1 & Scan2 kodokkal
;*
;Keys allapota
;7. = 1 Enabled
;6. = 1 Ismetleses mod (Typematic)
;5. = 1 Break mode (felengedeskor scan kod kell)
;4. = 1 Make mode (lenyomaskor scan kod kell)
;3. = 1 Utolso ervenyes allapot
;2:1 = > counter prellegesmentesiteshez
;0. = 1 Utolso allapot
;
; 6..4 = 1 Typematic/make/break mode
; 5..4 = 1 Make/break mode
; 4 = 1 Olny Make mode
MatrixTab: .db 0xF0 ;0. P
.db 0xF0 ;1. L
.db 0xF0 ;2. E
.db 0xF0 ;3. A
.db 0xF0 ;4. B
.db 0xF0 ;5. %
.db 0xF0 ;6. Space Bar
.db 0xF0 ;7. 7
.db 0xF0 ;8. Menu Up
.db 0xF0 ;9. Menu Ok
;10.
.db 0xB0 ;10. +C
.db 0xB0 ;11. +Z
.db 0xB0 ;12. +Y
.db 0xB0 ;13. Used
.db 0xF0 ;14. 9
.db 0xF0 ;15. 8
.db 0xF0 ;16. D
.db 0xF0 ;17. H
.db 0xF0 ;18. R
.db 0xF0 ;19. I
;20.
.db 0xF0 ;20. J
.db 0xF0 ;21. K
.db 0xF0 ;22. O
.db 0xF0 ;23. 4
.db 0xF0 ;24. Menu
.db 0xF0 ;25. Menu Cancel
.db 0xB0 ;26. Used
.db 0xB0 ;27. +X
.db 0xB0 ;28. Gyorsmenet
.db 0xB0 ;29. -X
;30.
.db 0xF0 ;30. 6
.db 0xF0 ;31. 5
.db 0xF0 ;32. N
.db 0xF0 ;33. G
.db 0xF0 ;34. M
.db 0xF0 ;35. F
.db 0xF0 ;36. S
.db 0xF0 ;37. T
.db 0xF0 ;38. Q
.db 0xF0 ;39. 1
;40.
.db 0xF0 ;40. Menu Down
.db 0xF0 ;41. MODE
.db 0xB0 ;42. -C
.db 0xB0 ;43. Used
.db 0xB0 ;44. -Y
.db 0xB0 ;45. -Z
.db 0xF0 ;46. 3
.db 0xF0 ;47. 2
.db 0xF0 ;48. X
.db 0xF0 ;49. Y
;50.
.db 0xF0 ;50. Z
.db 0xF0 ;51. U
.db 0xF0 ;52. V
.db 0xF0 ;53. W
.db 0xF0 ;54. C
.db 0xF0 ;55. .
.db 0xF0 ;56. End
.db 0xF0 ;57. Up Arrow
.db 0xF0 ;58. Home
.db 0xB0 ;59. Rotate Right
;60.
.db 0xB0 ;60. Rotate stop
.db 0xB0 ;61. Rotate Left
.db 0xF0 ;62. 0
.db 0xF0 ;63. -
.db 0xF0 ;64. S1
.db 0xF0 ;65. S2
.db 0xF0 ;66. S3
.db 0xF0 ;67. S4
.db 0xF0 ;68. S5
.db 0xB0 ;69. START
;70.
.db 0xB0 ;70. STOP
.db 0xF0 ;71. DEL
.db 0xF0 ;72. R Arrow
.db 0xF0 ;73. Dn Arrow
.db 0xF0 ;74. L Arrow
.db 0xF0 ;75. ENTER
.db 0xF0 ;76. CTRL
.db 0xF0 ;77. SHIFT
.db 0xF0 ;78. Backspace
.db 0xF0 ;79. INS
;80.
.db 0xB0 ;80. Yac-16[0]
.db 0xB0 ;81. Yac-16[1]
.db 0xB0 ;82. Yac-16[2]
.db 0xB0 ;83. Yac-16[3]
.db 0xB0 ;84. Yac-16[4]
.db 0xB0 ;85. Yac-16[5]
.db 0xB0 ;86. Yac-16[6]
.db 0xB0 ;87. Yac-16[7]
.db 0xB0 ;88. Yac-16[8]
.db 0xB0 ;89. Yac-16[9]
;90.
.db 0xB0 ;90. Yac-16[10]
.db 0xB0 ;91. Yac-16[11]
.db 0xB0 ;92. Yac-16[12]
.db 0xB0 ;93. Yac-16[13]
.db 0xB0 ;94. Yac-16[14]
.db 0xB0 ;95. Yac-16[15]
.db 0xB0 ;96. Yac-11[0]
.db 0xB0 ;97. Yac-11[1]
.db 0xB0 ;98. Yac-11[2]
.db 0xB0 ;99. Yac-11[3]
;100
.db 0xB0 ;100. Yac-11[4]
.db 0xB0 ;101. Yac-11[5]
.db 0xB0 ;102. Yac-11[6]
.db 0xB0 ;103. Yac-11[7]
.db 0xB0 ;104. Yac-11[8]
.db 0xB0 ;105. Yac-11[9]
.db 0xB0 ;106. Yac-11[10]
.db 0xB0 ;107. 3 allasu kapcs1A
.db 0xB0 ;108. 3 allasu kapcs1B
.db 0xB0 ;109. 3 allasu kapcs2A
;110
.db 0xB0 ;110. 3 allasu kapcs2B
.db 0xF0 ;111. Not used
.db 0xB0 ;112. Yac-12[0]
.db 0xB0 ;113. Yac-12[1]
.db 0xB0 ;114. Yac-12[2]
.db 0xB0 ;115. Yac-12[3]
.db 0xB0 ;116. Yac-12[4]
.db 0xB0 ;117. Yac-12[5]
.db 0xB0 ;118. Yac-12[6]
.db 0xB0 ;119. Yac-12[7]
.db 0xB0 ;120. Yac-12[8]
.db 0xB0 ;121. Yac-12[9]
.db 0xB0 ;122. Yac-12[10]
.db 0xB0 ;123. Yac-12[11]
.db 0xF0 ;124. Not used
.db 0xF0 ;125. Not used
.db 0xF0 ;126. Not used
.db 0xF0 ;127. Not used
DeleayT: .db 0x01,0x0C ;Set 500ms rep., 10 char/s
;**************************************************************************************
.CSEG
Scan_Init: ldi XL,Low(Matrix)
ldi XH,High(Matrix)
ldi ZL,Low(MatrixTab)
ldi ZH,High(MatrixTab)
out EEARH,ZH ;output address high for 8515
out EEARL,ZL ;output address low for 8515
ldi R17,KeyCount
GetMatrix: rcall EERead_seq ;get EEPROM data
ST X+,R0
dec R17
brne GetMatrix ;Scan filter torlese
ldi ZL,Low(DeleayT)
ldi ZH,High(DeleayT)
out EEARH,ZH
out EEARL,ZL
rcall EERead_seq ;get Dleay
mov R16,R0
rcall SetWait
rcall EERead_seq ;get Rep.Time
mov R16,R0
rcall SetRep
clr R16
STD Y+ParamErr-RAMSTRT,R16
ret
;**********************************
;* Beolvas a Keymatrixrol egy teljes matrixot a memoriaba
;*
ScanMatrix: CBI Row01234,Row0
ldi ZL,Low(Matrix)
ldi ZH,High(Matrix) ;a billentyu parametertabla cime
Row0w: SBIC Row01234-2,Row0 ;var mig a pin fizikailag nem lesz alacsony
rjmp Row0w
IN R0,DTLo_PORT-1 ;Lower 8 bit
rcall HalfRow
IN R0,DTHi_PORT-1 ;Higher 8 bit
SBI Row01234,Row0
CBI Row01234,Row1
rcall HalfRow
Row0u: SBIS Row01234-2,Row0 ;var mig a pin fizikailag nem lesz magas
rjmp Row0u
Row1w: SBIC Row01234-2,Row1
rjmp Row1w
IN R0,DTLo_PORT-1 ;Lower 8 bit
rcall HalfRow
IN R0,DTHi_PORT-1 ;Higher 8 bit
SBI Row01234,Row1
CBI Row01234,Row2
rcall HalfRow
Row1u: SBIS Row01234-2,Row1
rjmp Row1u
Row2w: SBIC Row01234-2,Row2
rjmp Row2w
IN R0,DTLo_PORT-1 ;Lower 8 bit
rcall HalfRow
IN R0,DTHi_PORT-1 ;Higher 8 bit
SBI Row01234,Row2
CBI Row01234,Row3
rcall HalfRow
Row2u: SBIS Row01234-2,Row2
rjmp Row2u
Row3w: SBIC Row01234-2,Row3
rjmp Row3w
IN R0,DTLo_PORT-1 ;Lower 8 bit
rcall HalfRow
IN R0,DTHi_PORT-1 ;Higher 8 bit
SBI Row01234,Row3
CBI Row01234,Row4
rcall HalfRow
Row3u: SBIS Row01234-2,Row3
rjmp Row3u
Row4w: SBIC Row01234-2,Row4
rjmp Row4w
IN R0,DTLo_PORT-1 ;Lower 8 bit
rcall HalfRow
IN R0,DTHi_PORT-1 ;Higher 8 bit
SBI Row01234,Row4
CBI Row567,Row5
rcall HalfRow
Row4u: SBIS Row01234-2,Row4
rjmp Row4u
Row5w: SBIC Row567-2,Row5
rjmp Row5w
IN R0,DTLo_PORT-1 ;Lower 8 bit
rcall HalfRow
IN R0,DTHi_PORT-1 ;Higher 8 bit
SBI Row567,Row5
CBI Row567,Row6
rcall HalfRow
Row5u: SBIS Row567-2,Row5
rjmp Row5u
Row6w: SBIC Row567-2,Row6
rjmp Row6w
IN R0,DTLo_PORT-1 ;Lower 8 bit
rcall HalfRow
IN R0,DTHi_PORT-1 ;Higher 8 bit
SBI Row567,Row6
CBI Row567,Row7
rcall HalfRow
Row6u: SBIS Row567-2,Row6
rjmp Row6u
Row7w: SBIC Row567-2,Row7
rjmp Row7w
IN R0,DTLo_PORT-1 ;Lower 8 bit
rcall HalfRow
IN R0,DTHi_PORT-1 ;Higher 8 bit
SBI Row567,Row7
rcall HalfRow
Row7u: SBIS Row567-2,Row7
rjmp Row7u
ret ;filter bufferben a beolvasott matrix
;*****************************
;xx. sor feldolgozasa
HalfRow: com R0 ;inv, ekkor 0 = nincs lenyomas, 1 = lenyomva
ldi R16,8
KeyCycl: ld R1,Z ;R1-ban a bill. parameter
mov R19,R1
ror R19
andi R19,3 ;a szamlalo allapota
cpi R19,3
breq kc1
inc R19 ;szamlalo+1
kc1: mov R17,R1
andi R17,1 ;0. bit az elozo allapot
mov R18,R0
andi R18,1 ;0. bit mostani allapot
eor R17,R18 ;azonos?
breq kc2 ;ha igen ugras
clr R19 ;szamlalo torlese, ha nem azonos
kc2: ror R0
rol R19
andi R19,7 ;csak a szamlalot es az uj allapotbit kell
mov R17,R1
andi R17,0b11111000 ;a parameter byte also 3 bitje nem kell
or R19,R17 ;counter es uj allapot bemasolasa
st Z+,R19
dec R16
brne KeyCycl
ret
;*****************************************************
;* Eloallitja a scankodokat a bill.matrix allapota alapjan
;*
;*****************************************************
MakeScanC: ldi ZL,Low(2*ScanTabl)
ldi ZH,High(2*ScanTabl) ;Scancode table
ldi XL,Low(Matrix)
ldi XH,High(Matrix) ;a billentyu parametertabla cime
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