; main file of the monolyzer project
;
; author: hackbard@hackdaworld.org
;

; device specific definition file
.include "../include/tn2313def.inc"

; defines
.def	zero		= r1
.def	one		= r2
.def	tmp1		= r16
.def	tmp2		= r17
.def	uart_rxtx	= r18
.def	count		= r19

;
; interrupts
;

; RESET
rjmp INIT

; INT0
reti

; INT1
reti

; T1 CAPT1
reti

; T1 COMP A
reti

; T1 OVF1
reti

; T0 OVF0
rjmp T0_OVF

; UART RX
rjmp UART_RECEIVE

; UART UDRE
reti

; UART TX
reti

; ANA COMP
reti

; PCINT
reti

; T1 COMP B
reti

; T0 COMP A
reti

; T0 COMP B
reti

; USI START
reti

; USI OVF
reti

; EE READY
reti

; WDT OVF
reti

;
; init and main code
;

RESET:
INIT:

	; gio port init
	rcall PORT_INIT

	; timer0 init
	rcall TIMER0_INIT

	; timer0 interrupt enable
	rcall TIMER0_INT_INIT

	; uart init
	rcall UART_INIT

	; uart interrupt enable
	rcall UART_INT_RX_INIT

	; zero and one initialization
	ldi tmp1,0
	mov zero,tmp1
	ldi tmp1,1
	mov one,tmp1

	; set stackpointer
	ldi tmp1,low(RAMEND)
	out SPL,tmp1

	; more init
	ldi count,0x21

	; signal ready output
	ldi uart_rxtx,0x68
	rcall UART_TX

	; global interrupt enable
	sei 

MAIN:

WAIT_FOR_HIGH:
	; start as soon as we get a high signal

	rjmp WAIT_FOR_HIGH


; include subroutines
.include "port.asm"
.include "timer.asm"
.include "uart.asm"


;
; interrupt routines
;

T0_OVF:

	; debug output
	cbi PORTD,3

	; read port

	; store another byte into sram


	; debug output
	sbi PORTD,3
	
	reti

UART_RECEIVE:
	reti


;
; sram
;

.dseg

DATA_STORAGE: .byte 8