msg.lst

51单片机C语言常用模块与综合系统设计实例精讲

C51 COMPILER V7.06   MSG                                                                   10/13/2006 09:21:10 PAGE 1   


C51 COMPILER V7.06, COMPILATION OF MODULE MSG
OBJECT MODULE PLACED IN msg.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE msg.c LARGE BROWSE DEBUG OBJECTEXTEND

stmt level    source

   1          #include <stdio.h>
   2          #include <absacc.h>
   3          #include <stdarg.h>
   4          #include <./Atmel/at89x52.h>
   5          #include "source.h"     
   6          /****HBS=half bottom screen ****/
   7          #define HBS_MSG_DEEP    10 //设置为screen_hbs函数定义消息的深度
   8          unsigned char hbs_msg[HBS_MSG_DEEP];
   9          unsigned char hbs_tail=0;
  10          unsigned char hbs_head=0;
  11          void send_hbs_msg(unsigned char msg){//向screen_hbs函数的消息队列发送消息
  12   1              hbs_msg[hbs_head]=msg;
  13   1              hbs_head++;
  14   1              hbs_head %=HBS_MSG_DEEP;
  15   1      }
  16          unsigned char  read_hbs_msg(void){//从screen_hbs函数的消息队列中读取消息
  17   1              unsigned char ret_msg;
  18   1              if(hbs_tail!=hbs_head){//消息队列不为空，返回消息
  19   2                      ret_msg=hbs_msg[hbs_tail];
  20   2                      hbs_tail++;
  21   2                      hbs_tail %=HBS_MSG_DEEP;
  22   2                      return ret_msg;
  23   2              }
  24   1              else{
  25   2                      return 0;//消息队列为空，返回0
  26   2              }
  27   1      }       
  28          void change_hbs_fsm(unsigned char fsm){//改变screen_hbs函数里的状态机
  29   1              screen.hbs_fsm=fsm;
  30   1      }
  31          /******以下消息函数的功能同以上的说明****/
  32          #define STATUS_MSG_DEEP    10
  33          unsigned char status_msg[STATUS_MSG_DEEP];
  34          unsigned char status_tail=0;
  35          unsigned char status_head=0;
  36          void send_status_msg(unsigned char msg){
  37   1              status_msg[status_head]=msg;
  38   1              status_head++;
  39   1              status_head %=STATUS_MSG_DEEP;
  40   1      }
  41          unsigned char  read_status_msg(void){
  42   1              unsigned char ret_msg;
  43   1              if(status_tail!=status_head){//消息队列不为空，返回消息
  44   2                      ret_msg=status_msg[status_tail];
  45   2                      status_tail++;
  46   2                      status_tail %=STATUS_MSG_DEEP;
  47   2                      return ret_msg;
  48   2              }
  49   1              else{
  50   2                      return 0;//消息队列为空，返回0
  51   2              }
  52   1      }
  53          void change_status_fsm(unsigned char fsm){//改变状态机
  54   1              screen.status_fsm=fsm;
  55   1      }
C51 COMPILER V7.06   MSG                                                                   10/13/2006 09:21:10 PAGE 2   



MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    158    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =     24    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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