t0_m3_t_gs.lst

timer for AT89C5131 example

C51 COMPILER V7.06   T0_M3_T_GS                                                            04/08/2004 13:57:01 PAGE 1   


C51 COMPILER V7.06, COMPILATION OF MODULE T0_M3_T_GS
OBJECT MODULE PLACED IN t0_m3_t_gs.OBJ
COMPILER INVOKED BY: C:\KEIL\C51\BIN\C51.EXE t0_m3_t_gs.c BROWSE DEBUG OBJECTEXTEND

stmt level    source

   1          /**
   2           * @file $RCSfile: t0_m3_t_gs.c,v $
   3           *
   4           * Copyright (c) 2004 Atmel.
   5           *
   6           * Please read file license.txt for copyright notice.
   7           *
   8           * @brief This file is an example to use timer0 in mode 3.
   9           *
  10           * This file can be parsed by Doxygen for automatic documentation
  11           * generation.
  12           * Put here the functional description of this file within the software
  13           * architecture of your program.
  14           *
  15           * @version $Revision: 1.0 $ $Name:  $
  16           */
  17          
  18          /* @section  I N C L U D E S */
  19          #include "reg_c51.h"
  20          
  21          
  22          /**
  23           * FUNCTION_PURPOSE: This file set up timer 0 in mode 3 (two 8 bits timers) 
  24           * with a software gate for the first.The second is always in timer mode
  25           * without hardware gate.
  26           * The two 8-bits register consist of all 8 bits of TL0 for the first timer
  27           * and all 8 bits of TH0 for the second timer.
  28           * In mode 3 TR1 is used for run the second timer and timer1.
  29           * FUNCTION_INPUTS: void
  30           * FUNCTION_OUTPUTS: void
  31           */
  32          void main(void)
  33          {
  34   1              TMOD &= 0xF0;                         /* Timer 0 mode 3 with software gate */
  35   1              TMOD |= 0x03;              /* GATE0=0; C/T0#=0; M10=1; M00=1; */
  36   1              
  37   1              TH0 = 0x00;                              /* init values */
  38   1              TL0 = 0x00;             
  39   1              ET0=1;                     /* enable first timer interrupt */
  40   1              ET1=1;                     /* enable second timer interrupt */
  41   1              EA=1;                                       /* enable interrupts */
  42   1              TR0=1;                                /* run the first timer */
  43   1              TR1=1;                                /* run the second timer */
  44   1      
  45   1              while(1);                                     /* endless  */
  46   1      }
  47          
  48          
  49          /**
  50           * FUNCTION_PURPOSE: first timer interrupt
  51           * FUNCTION_INPUTS: void
  52           * FUNCTION_OUTPUTS: P1.0 toggle period = 2 * 8192 cycles  
  53           */
  54          void it_first_timer(void) interrupt 1 /* interrupt address is 0x000b */
  55          {
C51 COMPILER V7.06   T0_M3_T_GS                                                            04/08/2004 13:57:01 PAGE 2   

  56   1              TF0 = 0;                                                        /* reset  interrupt flag (already done by hardware)*/
  57   1              P1_0 = ~P1_0;                                   /* P1.0 toggle when interrupt. */
  58   1      }
  59          
  60          
  61          /**
  62           * FUNCTION_PURPOSE: second timer interrupt.In mode 3 timer1 have not 
  63           * interrupt.
  64           * FUNCTION_INPUTS: void
  65           * FUNCTION_OUTPUTS: P1.1 toggle period = 2 * 8192 cycles  
  66           */
  67          void it_second_timer(void) interrupt 3 /* interrupt address is 0x001b */
  68          {
  69   1              TF1 = 0;                                                        /* reset  interrupt flag (already done by hardware)*/
  70   1              P1_1 = ~P1_1;                                   /* P1.1 toggle when interrupt. */
  71   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =     33    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


C51 COMPILATION COMPLETE.  0 WARNING(S),  0 ERROR(S)