X-Git-Url: https://hackdaworld.org/gitweb/?a=blobdiff_plain;f=beginners%2Fseason_junior.asm;h=e6a46067d459aaf6c6aa0bd249c0921370a2f84a;hb=d33a33e018bbcaa09907be8fa03b965fe411a974;hp=94ba21c6ccf34330ea351fc4b7e798329e8d8213;hpb=448a02069232f473cbdde6b2aa698d062bd3876a;p=my-code%2Fatmel.git

diff --git a/beginners/season_junior.asm b/beginners/season_junior.asm
index 94ba21c..e6a4606 100644
--- a/beginners/season_junior.asm
+++ b/beginners/season_junior.asm
@@ -6,31 +6,95 @@
 
 ; at90s2313
 ; setup:
-; vcc card --- vcc cam
-; rst card --- rst cam --- atmel t0 (pd4)
-; clk card --- clk cam --- atmel t1 (pd5)
+;
+; vcc card --- atmel vcc
+; vcc cam  --- 
+; rst cam  --- atmel int0 (pd2)
+; rst card --- atmel (pd4)
+; clk card -\ 
+;            -  atmel t1 (pd5)
+; clk cam  -/
 ; gnd card --- gnd cam --- atmel gnd
-; i/o card --- atmel int0 (pd2)
+; i/o card --- atmel icp (pd6)
 ; i/o cam  --- atmel int1 (pd3)
 
-include "../include/2313def.inc"
+.include "../include/2313def.inc"
 
 
-;
+; #######
+; defines
+; #######
+
+; baudrate = clock freq / etu
+; std smartcard etu: 372
+; other smartcards: 625
+.define clock 8000000
+.define clk_h 4000000
+.define etu 625
+.define etu_h 312
+.define baudrate 5 ; UBRR value for 76800 bits/s (8mhz clock)
+
+; sizes
+.define uart_data_len 4
+
+; names for registers
+.def tmp = r16
+.def bitcount = r17
+.def tmp1 = r18
+.def tmp2 = r19
+.def byte = r20
+.def overflow_counter = r21
+.def counter_l = r22
+.def counter_h = r23
+.def state = r24
+.def state_m = r25
+.def mode = r26
+.def counter_l_tmp = r27
+.def counter_h_tmp = r28
+.def address_h = r31
+.def address_l = r30
+.def one = r1
+.def zero = r0
+
+; state
+.define LOW (1<<0)
+.define LOW_F 1
+.define HIGH (1<<1)
+.define HIGH_F 2
+; mode
+.define STUPID (1<<0) ; forward cam <-> card communication
+.define STUPID_F 1
+.define COOL (1<<1) ; send time (clocks) & state via uart
+.define COOL_F 2
+.define ELITE (1<<2) ; create bytes, maybe even whole command arrays
+.define ELITE_F 3
+.define GODLIKE (1<<3) ; filter and mask for commands to card - send rejected via uart only
+.define GODLIKE_F 4
+.define INCREDIBLE_HACK (1<<4) ; destroy all your hardware
+.define INCREDIBLE_HACK_F 5 
+
+; but there is only stupid and cool mode right now %)
+
+
+; #############
+; programm code
+; #############
+
+; ------------------
 ; interrupt vectors:
-;
+; ------------------
 
 ; reset
 rjmp INIT
 
 ; int0
-rjmp REC_CARD
+rjmp RST_CAM
 
 ; int1
 rjmp REC_CAM
 
 ; timer/counter capt 1
-reti
+rjmp REC_CARD
 
 ; timer/counter compare
 reti
@@ -45,7 +109,7 @@ reti
 reti
 
 ; uart data register empty
-reti
+rjmp UART_OUT
 
 ; uart tx complete
 reti
@@ -53,41 +117,330 @@ reti
 ; analog comparator
 reti
 
-;
+; ------------
 ; init routine
-;
+; ------------
 
 INIT:
 
+; output low on rst to card while init
+sbi DDRD,DDD4
+cbi PORTD,PD4
+
 ; set stackpointer
-ldi r16,low(RAMEND)
-out SPL,r16
+ldi tmp,low(RAMEND)
+out SPL,tmp
 
 ; enable interrupts int0,int1
-ldi r16,((1<<INT0)|(1<<INT1))
-out GIMSK,r16
+ldi tmp,((1<<INT0)|(1<<INT1))
+out GIMSK,tmp
 ; int0/1 setup
-ldi r16,((1<<ISC01)|(1<<ISC00)|(1<<ISC11)|(1<<ISC10))
-out MCUCR,r16
-sbis PORTD,PORTD2
-cbi MCUCR,ISC00
-sbis PORTD,PORTD3
-cbi MCUCR,ISC10
-
-; enable t/c overflow interrupt
-sbi TIMSK,TOIE1
-; setup t/c
-ldi r16,((1<<CS12)|(1<<CS11)|(1<<CS10))
-out TCCR1B,r16
+ldi tmp,((1<<ISC01)|(0<<ISC00)|(1<<ISC11)|(0<<ISC10))
+out MCUCR,tmp
+
+; enable t/c overflow interrupt and icp
+ldi tmp,((1<<TOIE1)|(1<<TICIE))
+out TIMSK,tmp
+; setup t/c and icp
+ldi tmp,((1<<CS12)|(1<<CS11)|(1<<CS10)|(1<<ICNC1)|(0<<ICES1))
+out TCCR1B,tmp
+
+; configure uart - interrupt enabled when i/o
+ldi tmp,baudrate
+out UBRR,tmp
+sbi UCR,TXEN
+
+; enable pullups on int0, int1, clk, icp io ports
+ldi tmp,((1<<PD2)|(1<<PD3)|(1<<PD5)|(1<<PD6))
+
+; init registers
+ldi bitcount,0 
+ldi byte,0
+ldi overflow_counter,0
+ldi counter_l,0
+ldi counter_h,0
+ldi state,HIGH ; .. as waiting for falling edge of start bit
+ldi state_m,0x03
+ldi mode,(STUPID|COOL)
+ldi address_h,0
+ldi tmp,1
+mov one,tmp
+ldi tmp,0
+mov zero,tmp
 
 ; enable interrupts (global)
 sei
 
-;
+; output high on rst to card
+sbi PORTD,PD4
+
+; jump to mainloop
+rjmp MAIN
+
+; ------------
+; main routine
+; ------------
+
+MAIN:
+
+; loop and wait for interrupts
+rjmp MAIN
+
+; ----------------
 ; rec_card routine
-;
+; ----------------
 
 REC_CARD:
 
-; get port status
-in .... continue here .. :)
+; input & pullup
+cbi DDRD,DDD6
+sbi PORTD,PD6
+
+; toggle state
+eor state,state_m
+
+; toggle icp sense
+rcall TOGGLE_ICP_SENSE
+
+; fwd to cam if in stupid mode
+sbrc mode,STUPID_F
+rcall FWD_TO_CAM
+
+; calculate delta clocks if in cool mode
+sbrc mode,COOL_F
+rcall CALC_DELTA_CLOCK
+
+; send time and state via uart
+sbrc mode,COOL_F
+rcall PREPARE_UART
+
+; return
+reti
+
+; ------------------------
+; calc_delta_clock routine
+; ------------------------
+
+CALC_DELTA_CLOCK:
+
+; store counters
+mov counter_l_tmp,counter_l
+mov counter_h_tmp,counter_h
+
+; get new ones
+in counter_l,ICR1L
+in counter_h,ICR1H
+
+; delta calc on host software by now
+
+; return
+ret
+
+; ------------------------
+; toggle_icp_sense routine
+; ------------------------
+
+TOGGLE_ICP_SENSE:
+
+; toggle according to state
+in tmp,TCCR1B
+cbr tmp,ICES1
+sbrs state,HIGH ; maybe toggle according to TCCR1B?
+sbr tmp,ICES1
+out TCCR1B,tmp
+
+; return 
+ret
+
+; ------------------
+; fwd_to_cam routine
+; ------------------
+
+FWD_TO_CAM:
+
+; disable external interrupt 1 while toggling edge
+in tmp,GIMSK
+cbr tmp,INT1
+out GIMSK,tmp
+
+; output state on port to cam
+in tmp1,PORTD
+sbr tmp1,PD3
+sbrs state,HIGH_F
+cbr tmp1,PD3
+
+; configure as output and push-pull low/high
+sbi DDRD,DDD3
+out PORTD,tmp1;
+
+; reenable external interrupt 1
+sbr tmp,INT1
+out GIMSK,tmp
+
+; return
+ret
+
+; --------------------
+; prepare_uart routine
+; --------------------
+
+PREPARE_UART:
+
+; write transfer data to sram
+ldi address_l,0x60
+st address_l+,counter_l
+st address_l+,counter_h
+st address_l+,overflow_counter
+st address_l+,state
+
+; enable uart data register empty interrupt
+sbi UCR,UDRIE
+
+; return
+ret
+
+
+; ---------------
+; rec_cam routine
+; ---------------
+
+REC_CAM:
+
+; first thing - pullup on
+cbi DDRD,DDD3
+sbi DDRD,PD3
+
+; toggle state
+eor state,state_m
+
+; toggle int sense
+rcall TOGGLE_INT_SENSE
+
+; fwd to card if in stupid mode
+sbrc mode,STUPID_F
+rcall FWD_TO_CARD
+
+; calculate delta clocks if in cool mode
+sbrc mode,COOL_F
+rcall CALC_DELTA_CLOCK
+
+; return
+reti
+
+; ------------------------
+; toggle_int_sense routine
+; ------------------------
+
+TOGGLE_INT_SENSE:
+
+in tmp,MCUCR
+cbr tmp,ISC10
+sbrs state,HIGH_F
+sbr tmp,ISC10
+out MCUCR,tmp
+
+; return
+ret
+
+; -------------------
+; fwd_to_card routine
+; -------------------
+
+FWD_TO_CARD:
+
+; disable icp interrupt while toggling edge
+in tmp,TIMSK
+cbr tmp,TICIE
+out TIMSK,tmp
+
+; output state on port to card
+in tmp1,PORTD
+sbr tmp1,PD6
+sbrs state,HIGH_F
+cbr tmp1,PD6
+
+; configure as output and push-pull low/high
+sbi DDRD,DDD6
+out PORTD,tmp1;
+
+; reenable icp interrupt
+sbr tmp,TICIE
+out TIMSK,tmp
+
+; return
+ret
+
+; -------------------
+; t1_overflow routine
+; -------------------
+
+T1_OVERFLOW:
+
+; increment counter overflow
+add overflow_counter,one
+
+; return
+reti
+
+; ---------------
+; rst_cam routine
+; ---------------
+
+RST_CAM:
+
+; by now just jump to init
+rjmp INIT
+
+; ----------------
+; uart_out routine
+; ----------------
+
+UART_OUT:
+
+; disable uart data register empty interrupt
+cbi UCR,UDRIE
+
+; init counter(s)
+mov address_l,zero
+mov tmp,zero
+
+; send the data
+rcall UART_SEND
+
+; return
+reti
+
+; -----------------
+; uart_send routine
+; -----------------
+
+UART_SEND:
+
+; read next byte from memmory and transfer via uart
+sbic USR,UDRE
+rcall UART_GS
+
+; return if everything was sent
+cpi tmp,uart_data_len
+brne UART_SEND
+ret
+
+; ---------------
+; uart_gs routine
+; ---------------
+
+UART_GS:
+
+; 
+; wie macht man load mit autoinc richtig?
+;
+
+; read byte from memory and write via uart
+ld tmp1,address_l+
+out UDR,tmp1
+
+; increment counter (maybe needed later)
+add tmp,one
+
+; return
+ret