i2c.lst

这是一种温度变送器的源代码

C51 COMPILER V7.06   I2C                                                                   01/03/2008 17:28:43 PAGE 1   


C51 COMPILER V7.06, COMPILATION OF MODULE I2C
OBJECT MODULE PLACED IN I2C.OBJ
COMPILER INVOKED BY: d:\Keil\C51\BIN\C51.EXE I2C.c BROWSE DEBUG OBJECTEXTEND

stmt level    source

   1          #include<c8051f350.h>
   2          #include "variable.h"
   3          #include "I2C.h"
   4          #include "menu.h"
   5          
   6          bit SMB_BUSY;
   7          bit SMB_RW;
   8          bit RW_flag;
   9          bit Ack1;
  10          bit     Ack2;
  11          /********************************************
  12          函数名: SMbus_init
  13          功能: SMbus初始化
  14          形式参数:无
  15          返回值:无
  16          ********************************************/
  17          void SMbus_init(void)
  18          {
  19   1              SMB0CF = 0xDC;
  20   1      }
  21          /********************************************
  22          函数名: SMbus_24c02_read
  23          功能: SMbus读数据
  24          形式参数:addr-字节首地址
  25          返回值:读取的数据
  26          ********************************************/
  27          void SMbus_24c02_read(unsigned char addr)
  28          {
  29   1              while(SMB_BUSY);
  30   1              SMB_BUSY=1;
  31   1              RW_flag=1;
  32   1              Ack1=0;
  33   1              Ack2=0;
  34   1              Slave=0xa0;//24c02器件地址
  35   1              SMB_RW=write;
  36   1              Dat_addr=addr;//数据首字节地址
  37   1              STA=1;
  38   1              while(SMB_BUSY);
  39   1      }
  40          /********************************************
  41          函数名: SMbus_24c02_write
  42          功能: 24c02写数据 
  43          形式参数:addr-字节首地址，dat-数据值
  44          返回值:无
  45          ********************************************/
  46          void SMbus_24c02_write(unsigned char addr,unsigned char dat)
  47          {
  48   1              while(SMB_BUSY);
  49   1              SMB_BUSY=1;
  50   1              RW_flag=0;
  51   1              Ack1=0;
  52   1              Ack2=0;
  53   1              Slave=0xa0;
  54   1              SMB_RW=write;
  55   1              Dat_addr=addr;
C51 COMPILER V7.06   I2C                                                                   01/03/2008 17:28:43 PAGE 2   

  56   1              Dat_val=dat;
  57   1              STA=1;
  58   1              while(SMB_BUSY);        
  59   1      }
  60          


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =     54    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =      5    ----
END OF MODULE INFORMATION.


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