led_plex/main.asm

   1 ; main file of led_plex project
   2 ;
   3 ; schematics: http://hackdaworld.org/download/led_plex/led_plex.png
   4 ;
   5 ; author: hackbard@hackdaworld.org
   6 ;
   7
   8 ; device specific definition file
   9 .include "../include/tn2313def.inc"
  10
  11 ; defines
  12 .def    tmp1            = r16
  13 .def    tmp2            = r17
  14 .def    uart_rxtx       = r18
  15 .def    hc595_sink      = r19
  16 .def    hc595_source    = r20
  17
  18 ;
  19 ; interrupts
  20 ;
  21
  22 ; RESET
  23 rjmp INIT
  24
  25 ; INT0
  26 reti
  27
  28 ; INT1
  29 reti
  30
  31 ; T1 CAPT1
  32 reti
  33
  34 ; T1 COMP A
  35 reti
  36
  37 ; T1 OVF1
  38 rjmp T1_OVF
  39
  40 ; T0 OVF0
  41 rjmp T0_OVF
  42
  43 ; UART RX
  44 rjmp UART_RECEIVE
  45
  46 ; UART UDRE
  47 reti
  48
  49 ; UART TX
  50 reti
  51
  52 ; ANA COMP
  53 reti
  54
  55 ; PCINT
  56 reti
  57
  58 ; T1 COMP B
  59 reti
  60
  61 ; T0 COMP A
  62 reti
  63
  64 ; T0 COMP B
  65 reti
  66
  67 ; USI START
  68 reti
  69
  70 ; USI OVF
  71 reti
  72
  73 ; EE READY
  74 reti
  75
  76 ; WDT OVF
  77 reti
  78
  79 ;
  80 ; init and main code
  81 ;
  82
  83 RESET:
  84 INIT:
  85
  86         ; gio port init
  87         rcall PORT_INIT
  88
  89         ; timer init
  90         ;rcall TIMER_INIT
  91
  92         ; uart init
  93         rcall UART_INIT
  94
  95         ; uart interrupt enable
  96         rcall UART_INT_RX_INIT
  97
  98         ; set stackpointer
  99         ldi tmp1,low(RAMEND)
 100         out SPL,tmp1
 101
 102         ; global interrupt enable
 103         ;sei
 104
 105         ; signal ready output
 106         ldi uart_rxtx,0x68
 107         rcall UART_TX
 108
 109         ; testing ... DO NOT CONNECT LEDS BY NOW !!!
 110         ldi hc595_sink,0xff
 111         ldi hc595_source,0xff
 112         rcall SET_HC595
 113         ldi uart_rxtx,0x61
 114         rcall UART_TX
 115
 116 MAIN:
 117
 118         ; loop forever
 119         rjmp MAIN
 120
 121
 122 ; include subroutines
 123 .include "port.asm"
 124 .include "timer.asm"
 125 .include "uart.asm"
 126
 127
 128 ;
 129 ; interrupt routines
 130 ;
 131
 132 T1_OVF:
 133         reti
 134
 135 T0_OVF:
 136         reti
 137
 138 UART_RECEIVE:
 139         reti
 140