1               		.file	"led_flash4.c"
   2               	__SREG__ = 0x3f
   3               	__SP_H__ = 0x3e
   4               	__SP_L__ = 0x3d
   5               	__tmp_reg__ = 0
   6               	__zero_reg__ = 1
   7               		.global __do_copy_data
   8               		.global __do_clear_bss
  10               		.text
  11               	.Ltext0:
  75               	.global	main
  77               	main:
   1:led_flash4.c  **** #include "oulib.h"
   2:led_flash4.c  **** // Bion board example
   3:led_flash4.c  **** // Turn on LED when button is pressed
   4:led_flash4.c  **** 
   5:led_flash4.c  **** // One change from our discussion in class:
   6:led_flash4.c  **** //  When the button is pressed, the pin reads a 0
   7:led_flash4.c  **** //
   8:led_flash4.c  **** // Circuit information:
   9:led_flash4.c  **** //  Button connected to PORT D, pin 3
  10:led_flash4.c  **** //    -- When open, the pin is at +5 V
  11:led_flash4.c  **** //    -- When closed, the pin is at 0 V
  12:led_flash4.c  **** // 
  13:led_flash4.c  **** //  LED connected to PORT C, pin 5
  14:led_flash4.c  **** //
  15:led_flash4.c  **** 
  16:led_flash4.c  **** 
  17:led_flash4.c  **** 
  18:led_flash4.c  **** int main (void)
  19:led_flash4.c  **** {
  79               	.LM0:
  80               	.LFBB1:
  81               	/* prologue: frame size=0 */
  82 0000 C0E0      		ldi r28,lo8(__stack - 0)
  83 0002 D0E0      		ldi r29,hi8(__stack - 0)
  84 0004 DEBF      		out __SP_H__,r29
  85 0006 CDBF      		out __SP_L__,r28
  86               	/* prologue end (size=4) */
  20:led_flash4.c  **** 
  21:led_flash4.c  **** 	DDRC = 0xFF;
  88               	.LM1:
  89 0008 8FEF      		ldi r24,lo8(-1)
  90 000a 84BB      		out 52-0x20,r24
  22:led_flash4.c  **** 	DDRD = 0x0;
  92               	.LM2:
  93 000c 11BA      		out 49-0x20,__zero_reg__
  94               	.L9:
  23:led_flash4.c  **** 	
  24:led_flash4.c  **** 	while(1) {
  25:led_flash4.c  **** 	  if(!(PIND & 0x8))   // Does PIN 3 of PORT D read low right now?
  96               	.LM3:
  97 000e 8399      		sbic 48-0x20,3
  98 0010 00C0      		rjmp .L3
  26:led_flash4.c  **** 	    {
  27:led_flash4.c  **** 	      // The button is pressed
  28:led_flash4.c  **** 	      PORTC = PORTC | 0x20;
 100               	.LM4:
 101 0012 AD9A      		sbi 53-0x20,5
 102 0014 00C0      		rjmp .L9
 103               	.L3:
  29:led_flash4.c  **** 	      // PORTC |= 0x20;  // Equivalent to above line
  30:led_flash4.c  **** 	    }
  31:led_flash4.c  **** 	  else
  32:led_flash4.c  **** 	    {
  33:led_flash4.c  **** 	      // Button is not pressed
  34:led_flash4.c  **** 	      PORTC &= ~0x20;
 105               	.LM5:
 106 0016 AD98      		cbi 53-0x20,5
 107 0018 00C0      		rjmp .L9
 108               	/* epilogue: frame size=0 */
 109               	/* epilogue: noreturn */
 110               	/* epilogue end (size=0) */
 111               	/* function main size 13 (9) */
 113               	.Lscope1:
 115               	.Letext0:
 116               	/* File "led_flash4.c": code   13 = 0x000d (   9), prologues   4, epilogues   0 */
DEFINED SYMBOLS
                            *ABS*:0000000000000000 led_flash4.c
     /tmp/ccXGmZYh.s:2      *ABS*:000000000000003f __SREG__
     /tmp/ccXGmZYh.s:3      *ABS*:000000000000003e __SP_H__
     /tmp/ccXGmZYh.s:4      *ABS*:000000000000003d __SP_L__
     /tmp/ccXGmZYh.s:5      *ABS*:0000000000000000 __tmp_reg__
     /tmp/ccXGmZYh.s:6      *ABS*:0000000000000001 __zero_reg__
     /tmp/ccXGmZYh.s:77     .text:0000000000000000 main

UNDEFINED SYMBOLS
__do_copy_data
__do_clear_bss
__stack