kw_timer.lst

linux下数据下载器的设计与实现

C51 COMPILER V7.50   KW_TIMER                                                              10/12/2007 17:05:48 PAGE 1   


C51 COMPILER V7.50, COMPILATION OF MODULE KW_TIMER
OBJECT MODULE PLACED IN kw_timer.OBJ
COMPILER INVOKED BY: d:\Keil\C51\BIN\C51.EXE kw_timer.c OBJECTADVANCED OPTIMIZE(11,SIZE) REGFILE(.\nand_fw2k.ORC) BROWSE
                    - ORDER INCDIR(c:\cypress\usb\target\inc) DEFINE(NAND_2K) DEBUG

line level    source

   1          /************************************************************************************** 
   2           Copyright (C), 1988-1999, Xi'an Keyway Control & Measurement Technology Co., Ltd
   3           FileName: kw_timer.c 
   4           Description     :nandflash 接口模块。      
   5           Version         :1.0 
   6           Function List   :    
   7           History:         // 历史修改记录 
   8                <author>      <time>        <version >       <desc> 
   9                LigangWang    07/08/08       1.0             build this moudle   
  10          *************************************************************************************/
  11          
  12          #include "globals.h"
  13          
  14          #define TIMER0_COUNT 0x63c0                                                                             // 10ms at 24MHz
  15          
  16          WORD xdata  timer0_tick;                                                                                // 嘀哒数，10ms一周期
  17          
  18          /************************************************************************************* 
  19            Function:       TM_Timer0_Init
  20            Description:    初始化 Timer 0，启动中断，每10ms中断一次
  21            Called By:      fw.c / main()
  22            Input:          N/A
  23            Output:         N/A
  24            Return:         void
  25            Others:         
  26          *************************************************************************************/
  27          void TM_Timer0_Init (void)
  28          {
  29   1              EA = 0;                                                                                                         // 关闭中断
  30   1              TR0 = 0;                                                                                        // 进制timer0
  31   1                                              
  32   1              CKCON = 0x03;                                                                                           // Timer 0 使用 CLK24/12
  33   1              TMOD &= ~0x0F;                                                                                          // 清除 timer0 mod位
  34   1              TMOD |= 0x01;                                                                           // 设置T imer 0 为16位模式
  35   1      
  36   1              TL0 = (TIMER0_COUNT & 0x00FF);                                                          // 装载计数值
  37   1              TH0 = (TIMER0_COUNT >> 8);
  38   1      
  39   1              PT0 = 0;                                                                                                        // 设置中断触发方式
  40   1              ET0 = 1;                                                                                                        // 允许 Timer 0 中断
  41   1              TR0 = 1;                                                                                // 启动 Timer 0
  42   1              EA =  1;                                                                                                        // 开中断
  43   1              timer0_tick = 0;
  44   1      }
  45          
  46          /************************************************************************************* 
  47            Function:       TM_Timer0
  48            Description:    Timer 0中断服务程序，嘀哒数 timer0_tick 加1，并重新装载计数初值
  49            Called By:      ...
  50            Input:          N/A
  51            Output:         N/A
  52            Return:         void
  53            Others:         
  54          *************************************************************************************/
C51 COMPILER V7.50   KW_TIMER                                                              10/12/2007 17:05:48 PAGE 2   

  55          void TM_Timer0 (void) interrupt 1 using 1                               
  56          {
  57   1              TR0 = 0;                                                                                        // 停止计数
  58   1              timer0_tick++;                                                                                          // 嘀哒加1
  59   1              TL0 = TL0 + (TIMER0_COUNT & 0x00FF);                                            // 重新装载初值
  60   1              TH0 = TH0 + (TIMER0_COUNT >> 8);
  61   1              TR0 = 1;                                                                                                        // 启动计数
  62   1      }
  63          
  64          /************************************************************************************* 
  65            Function:       TM_ClearWTD
  66            Description:    清除看门狗信号，该函数必须在1.5s周期内运行
  67            Called By:      ...
  68            Input:          N/A
  69            Output:         N/A
  70            Return:         void
  71            Others:         
  72          *************************************************************************************/
  73          void TM_ClearWTD()
  74          {
  75   1              if((IOE & (1 << 1)) == 0)
  76   1                      IOE |= (1 << 1);                                                                                        //置IOE.1为高电平
  77   1              else
  78   1                      IOE &= (~(1 << 1));                                                                                     //清除，设为0
  79   1      }
  80          
  81          /************************************************************************************* 
  82            Function:       TM_InitWTD
  83            Description:    初始化看门狗
  84            Called By:      ...
  85            Input:          N/A
  86            Output:         N/A
  87            Return:         void
  88            Others:         
  89          *************************************************************************************/
  90          void TM_InitWTD()
  91          {
  92   1              return ;
  93   1      }
  94          
  95          
  96          


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    105    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =      2    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
   EDATA SIZE       =   ----    ----
   HDATA SIZE       =   ----    ----
   XDATA CONST SIZE =   ----    ----
   FAR CONST SIZE   =   ----    ----
END OF MODULE INFORMATION.


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