bargraph.lst

time triggered 时间触发嵌入式系统的开发实例3

C51 COMPILER V6.10  BARGRAPH                                                               04/18/2001 18:01:10 PAGE 1   


C51 COMPILER V6.10, COMPILATION OF MODULE BARGRAPH
OBJECT MODULE PLACED IN .\BARGRAPH.OBJ
COMPILER INVOKED BY: C:\KEIL\C51\BIN\C51.EXE .\BARGRAPH.C BROWSE DEBUG OBJECTEXTEND

stmt level    source

   1          /*------------------------------------------------------------------*-
   2          
   3             Bargraph.c (v1.00)
   4          
   5            ------------------------------------------------------------------
   6          
   7             Simple bargraph library.  
   8          
   9             See Chapter 10 for further details.
  10          
  11          
  12             COPYRIGHT
  13             ---------
  14          
  15             This code is from the book:
  16          
  17             PATTERNS FOR TIME-TRIGGERED EMBEDDED SYSTEMS by Michael J. Pont 
  18             [Pearson Education, 2001; ISBN: 0-201-33138-1].
  19          
  20             This code is copyright (c) 2001 by Michael J. Pont.
  21           
  22             See book for copyright details and other information.
  23          
  24          -*------------------------------------------------------------------*/
  25          
  26          #include "Main.h"
  27          #include "Port.h"
  28          
  29          #include "Bargraph.h"
  30          
  31          // ------ Public variable declarations -----------------------------
  32          
  33          // The data to be displayed
  34          tBargraph Data_G;
  35          
  36          // ------ Private constants ----------------------------------------
  37          
  38          #define BARGRAPH_ON (1)
  39          #define BARGRAPH_OFF (0)
  40          
  41          // ------ Private variables ----------------------------------------
  42          
  43          // These  variables store the thresholds
  44          // used to update the display
  45          static tBargraph M9_1_G;
  46          static tBargraph M9_2_G;
  47          static tBargraph M9_3_G;
  48          static tBargraph M9_4_G;
  49          static tBargraph M9_5_G;
  50          static tBargraph M9_6_G;
  51          static tBargraph M9_7_G;
  52          static tBargraph M9_8_G;
  53          
  54          
  55          /*------------------------------------------------------------------*-
C51 COMPILER V6.10  BARGRAPH                                                               04/18/2001 18:01:10 PAGE 2   

  56          
  57            BARGRAPH_Init()
  58          
  59            Prepare for the bargraph display.
  60          
  61          -*------------------------------------------------------------------*/
  62          void BARGRAPH_Init(void)
  63             {
  64   1         Pin0 = BARGRAPH_OFF;   
  65   1         Pin1 = BARGRAPH_OFF;   
  66   1         Pin2 = BARGRAPH_OFF;   
  67   1         Pin3 = BARGRAPH_OFF;   
  68   1         Pin4 = BARGRAPH_OFF;   
  69   1         Pin5 = BARGRAPH_OFF;   
  70   1         Pin6 = BARGRAPH_OFF;   
  71   1         Pin7 = BARGRAPH_OFF;   
  72   1      
  73   1         // Use a linear scale to display data 
  74   1         // Remember: *9* possible output states
  75   1         // - do all calculations ONCE
  76   1         M9_1_G = (BARGRAPH_MAX - BARGRAPH_MIN) / 9;
  77   1         M9_2_G = M9_1_G * 2;
  78   1         M9_3_G = M9_1_G * 3;
  79   1         M9_4_G = M9_1_G * 4;
  80   1         M9_5_G = M9_1_G * 5;
  81   1         M9_6_G = M9_1_G * 6;
  82   1         M9_7_G = M9_1_G * 7;
  83   1         M9_8_G = M9_1_G * 8;
  84   1         }
  85          
  86          /*------------------------------------------------------------------*-
  87          
  88            BARGRAPH_Update()
  89          
  90            Update the bargraph display.
  91          
  92          -*------------------------------------------------------------------*/
  93          void BARGRAPH_Update(void)
  94             {
  95   1         tBargraph Data = Data_G - BARGRAPH_MIN; 
  96   1      
  97   1         Pin0 = ((Data >= M9_1_G) == BARGRAPH_ON);
  98   1         Pin1 = ((Data >= M9_2_G) == BARGRAPH_ON);
  99   1         Pin2 = ((Data >= M9_3_G) == BARGRAPH_ON);
 100   1         Pin3 = ((Data >= M9_4_G) == BARGRAPH_ON);
 101   1         Pin4 = ((Data >= M9_5_G) == BARGRAPH_ON);
 102   1         Pin5 = ((Data >= M9_6_G) == BARGRAPH_ON);
 103   1         Pin6 = ((Data >= M9_7_G) == BARGRAPH_ON);
 104   1         Pin7 = ((Data >= M9_8_G) == BARGRAPH_ON);
 105   1         }
 106          
 107          /*------------------------------------------------------------------*-
 108            ---- END OF FILE -------------------------------------------------
 109          -*------------------------------------------------------------------*/
 110          


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    245    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
C51 COMPILER V6.10  BARGRAPH                                                               04/18/2001 18:01:10 PAGE 3   

   DATA SIZE        =      9    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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