main.lst

时间触发嵌入式系统设计模式:使用8051系列微控制器开发可靠应用

C51 COMPILER V6.10  MAIN                                                                   04/19/2001 12:00:55 PAGE 1   


C51 COMPILER V6.10, COMPILATION OF MODULE MAIN
OBJECT MODULE PLACED IN .\MAIN.OBJ
COMPILER INVOKED BY: C:\KEIL\C51\BIN\C51.EXE .\MAIN.C OPTIMIZE(6,SPEED) BROWSE DEBUG OBJECTEXTEND

stmt level    source

   1          /*------------------------------------------------------------------*-
   2          
   3             Main.C (v1.00)
   4          
   5            ------------------------------------------------------------------
   6          
   7             Simple test program for SPI code library.
   8          
   9             Reads from Max1110 / 1111 SPI ADC.
  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 "SPI_Core.h"
  28          #include "SPI_1110.h"
  29          #include "Delay_T0.h"
  30          
  31          // In this test program, we define the error code variable here.
  32          tByte Error_code_G = 0;
  33          
  34          void main(void)
  35             {
  36   1         tByte Data1 = 0;
  37   1         tByte Data2 = 0;
  38   1      
  39   1         tWord Data_address = 0;
  40   1      
  41   1         // See text for details 
  42   1      
  43   1         // SPI Control Register.
  44   1         // Bit 0 = SPR0
  45   1         // Bit 1 = SPR1 (these two control the clock rate)
  46   1         // Bit 2 = CPHA (transfer format, see p15 of AT89S53 docs)
  47   1         // Bit 3 = CPOL (clock polarity, 1 = high when idle, 0 = low when idle)
  48   1         // Bit 4 = MSTR (1 for master, 0 for slave)
  49   1         // Bit 5 = DORD (data order, 1 for LSB first, 0 for MSB first)
  50   1         // Bit 6 = SPE  (enable SPI)
  51   1         // Bit 7 = SPIE (enable SPI interrupt, if ES is also 1)
  52   1      
  53   1         // To interface with the MAX1110 ADC, we need a clock rate in the range 
  54   1         // 50-500 kHz, so with a 12 MHz oscillator SPR0 and SPR1 are set at 1 and 0, 
  55   1         // so SPI speed is Fosc / 64, which is 187.5 kHz
C51 COMPILER V6.10  MAIN                                                                   04/19/2001 12:00:55 PAGE 2   

  56   1         // 
  57   1         // CPHA and CPOL both need to be zero, see MAX1110 docs
  58   1         // DORD needs to be zero (MSB first)
  59   1         // MSTR, SPE, SPIE need to be one
  60   1         //  SPCR = 0x52;
  61   1         SPI_Init_AT89S53(0x52);
  62   1      
  63   1         while (1) 
  64   1            {
  65   2            // Read ADC byte
  66   2            Data2 = SPI_MAX1110_Read_Byte();
  67   2      
  68   2            // Display data
  69   2            P2 = 255 - Data2;
  70   2      
  71   2            // Display error codes (if any)
  72   2            P3 = 255 - Error_code_G;
  73   2      
  74   2            Hardware_Delay_T0(1000);
  75   2            }   
  76   1         }
  77          
  78          /*------------------------------------------------------------------*-
  79            ---- END OF FILE -------------------------------------------------
  80          -*------------------------------------------------------------------*/
  81          
  82          


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =     43    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =      1       4
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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