C51 COMPILER V9.60.7.0   UL                                                                03/10/2025 18:03:55 PAGE 1   


C51 COMPILER V9.60.7.0, COMPILATION OF MODULE UL
OBJECT MODULE PLACED IN .\Objects\ul.obj
COMPILER INVOKED BY: D:\Keil_v5\C51\BIN\C51.EXE ..\driver\ul.c OPTIMIZE(8,SPEED) BROWSE INCDIR(..\driver;..\user) DEBUG 
                    -OBJECTEXTEND PRINT(.\Listings\ul.lst) TABS(2) OBJECT(.\Objects\ul.obj)

line level    source

   1          #include "ul.h"
   2          
   3          #include "intrins.h"
   4          sbit Tx = P1 ^ 0;
   5          sbit Rx = P1 ^ 1;
   6          void Delay12us(void)  //@12.000MHz
   7          {
   8   1        unsigned char data i;
   9   1      
  10   1        _nop_();
  11   1        _nop_();
  12   1        i = 33;  // 38
  13   1        while (--i);
  14   1      }
  15          void Ut_Wave_Init() {
  16   1        unsigned char i;
  17   1        for (i = 0; i < 8; i++) {
  18   2          Tx = 1;
  19   2          Delay12us();
  20   2          Tx = 0;
  21   2          Delay12us();
  22   2        }
  23   1      }
  24          unsigned char Ut_Wave_Data() {
  25   1        unsigned int time;
  26   1        CH = CL = 0;
  27   1        CMOD = 0x00;
  28   1      
  29   1        EA = 0;
  30   1        Ut_Wave_Init();
  31   1        EA = 1;
  32   1      
  33   1        CR = 1;
  34   1        while (Rx && !CF);
  35   1        CR = 0;
  36   1        if (!CF) {  // us -> s 10^(-6)
  37   2          // m -> cm 10^2
  38   2          //  10^(-4)
  39   2          // L = V*T/2=340*time/2=170*10^(-4)*time=0.017*time
  40   2          time = CH << 8 | CL;
  41   2          return (0.017 * time + 3);
  42   2        } else {
  43   2          CF = 0;
  44   2          return 0;
  45   2        }
  46   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =     94    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----    ----
C51 COMPILER V9.60.7.0   UL                                                                03/10/2025 18:03:55 PAGE 2   

   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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