num_led.lst

液晶显示

##############################################################################
#                                                                            #
# IAR Atmel AVR C/EC++ Compiler V2.28A/WIN, Evaluation Version09/Dec/2002  15:57:51 #
# Copyright 1996-2002 IAR Systems. All rights reserved.                      #
#                                                                            #
#    Source file  =  C:\work\mega128\num_led\num_led.c                       #
#    Command line =  --cpu=m128 -ms -o C:\work\mega128\num_led\Debug\Obj\    #
#                    -I "C:\IAR SYSTEMS\EW23\AVR\SRC\CLIB\INC\" -D iar -lcN  #
#                    C:\work\mega128\num_led\Debug\List\ -e -y               #
#                    --initializers_in_flash -z3 --no_cse --no_inline        #
#                    --no_code_motion --no_cross_call --no_clustering        #
#                    --debug C:\work\mega128\num_led\num_led.c               #
#    List file    =  C:\work\mega128\num_led\Debug\List\num_led.lst          #
#    Object file  =  C:\work\mega128\num_led\Debug\Obj\num_led.r90           #
#                                                                            #
#                                                                            #
##############################################################################

      1          #include <iom128.h>
      2          #ifndef iar
      3            #include <macros.h>
      4          #endif  
      5          #define xtal 4
      6          const unsigned char seg_table[16]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,
      7          0x82,0xf8,0x80,0x90,0x88,0x83,0xc6,0xa1,0x86,0x8e};
      8          unsigned char led_buff[4]={0,0,0,0};	  
      9          void delay_1ms(void)
     10          	 {
     11          	  unsigned int i;
     12           	  for(i=1;i<(unsigned int)(xtal*143-2);i++)
     13                	; 
     14          	 }
     15          /*void delay_ms(unsigned int n)
     16          	 {
     17           	  unsigned int i=0;
     18             	  while(i<n)
     19             	  		{
     20          			 delay_1ms();
     21          			 i++;
     22             			}
     23          	 }*/
     24          void led_display(void)
     25          	 {
     26          	  unsigned char i;
     27          	  DDRA=0xff;
     28          	  PORTA=0xff;
     29          	  DDRC|=0xf0;
     30          	  PORTC|=0xf0;
     31          	  for(i=0;i<4;i++)
     32          	  	 {		  
     33          		  PORTA=led_buff[i];
     34          		  PORTC&=~(1<<(i+4));
     35          		  delay_1ms();
     36          		  PORTC|=0xf0;
     37          		 }
     38          	 }
     39          void led_fill(unsigned char index)
     40          	 {	 
     41          	  unsigned char i;
     42          	  for(i=0;i<4;i++)
     43          	     {
     44          		  led_buff[i]=seg_table[index+i];
     45          		 }
     46          	 }	 
     47          void main(void)
     48          	 {
     49          	  unsigned char i,j;
     50          	  while(1)
     51          	  	   {
     52          		    for(j=0;j<4;j++)
     53          				{
     54          		    	 led_fill(4*j);
     55          				 for(i=0;i<200;i++)
     56          			     	led_display();
     57          				} 
     58          		   }
     59          	 }
     60          	 	 

   Maximum stack usage in bytes:

     Function          CSTACK  RSTACK
     --------          ------  ------
     delay_1ms             0       0 
     led_display           2       2 
       -> delay_1ms        2       2 
     led_fill              0       0 
     main                  2       2 
       -> led_display      2       2 
       -> led_fill         2       2 

 
      4 bytes in segment ABSOLUTE
    170 bytes in segment CODE
     14 bytes in segment INITTAB
     16 bytes in segment NEAR_I
     16 bytes in segment NEAR_ID
      4 bytes in segment NEAR_Z
 
    186 bytes of CODE memory (+ 14 bytes shared)
     20 bytes of DATA memory (+ 4 bytes shared)

Errors: none
Warnings: none