main.lst

用89C51SND1C实现的USB存储器的代码,包括USB通信和FLASH的读写操作.

C51 COMPILER V6.23a  MAIN                                                                  05/31/2003 10:20:29 PAGE 1   


C51 COMPILER V6.23a, COMPILATION OF MODULE MAIN
OBJECT MODULE PLACED IN main.OBJ
COMPILER INVOKED BY: E:\Program Files\keil\C51\BIN\C51.EXE main.c BROWSE DEBUG OBJECTEXTEND

stmt level    source

   1          #include <REGSND1.H>
   2          #include "uart.h"
   3          #include "atmelusbci.h"
   4          #include "main.h"
   5          
   6          code unsigned char Device_Descriptor[18]={
   7                                                                                  0x12,                   //0x12
   8                                                                                           0x01,              //DEVICE descriptor
   9                                                                                           0x10,0x01,         //spec rev level (BCD) 1.0
  10                                                                                           0x0,              //device class
  11                                                                                           0x0,              //device subclass
  12                                                                                           0x0,              //device protocol
  13                                                                                           0x20,              //max packet size
  14                                                                                           0x05,0x82,         //National's vendor ID
  15                                                                                           0x00,0x11,         //National's product ID  
  16                                                                                           0x00,0x00,         //National's revision ID  
  17                                                                                           0,                 //index of manuf. string   
  18                                                                                           0,                 //index of prod.  string  
  19                                                                                           0,                 //index of ser. # string   
  20                                                                                           0x01               //number of configs.        
  21                                                                                  };
  22          
  23          code unsigned char Configuration_Descriptor_All[32]={
  24          
  25                                                                                      9,//Size of Descriptor in Bytes
  26                                                                                      2,//Configuration Descriptor (0x02)
  27                                                                                      0x20,//Total length in bytes of data returned  LSB
  28                                                                                          0x00,//MSB
  29                                                                                          1,//Number of Interfaces
  30                                                                                          1,//Value to use as an argument to select this configuration
  31                                                                                      0,//Index of String Descriptor describing this configuration
  32                                                                                          0x80,
  33                                                                                          0xfa,//Maximum Power Consumption in 2mA units 
  34                                                                                  
  35                                                                                      9,
  36                                                                                      4,
  37                                                                                      0,//the index of the interface descriptor Number of Interface
  38                                                                                      0,//Value used to select alternative setting
  39                                                                                          2,//EndPoint Number Used in this Descriptor
  40                                                                                          8,//Class Code (Assigned by USB Org)
  41                                                                                          6,      //interface subclass1=RBC,2=SFF,3=QIC,4=UFI,5=SFF,6=SCSI
  42                                                                                          0x50,//bulk 0nly Transport
  43                                                                                          0,//Index of String Descriptor Describing this interface
  44          
  45                                                                                           //Bulk-in Endpoint
  46                                                                                           0x07,              //length of this desc.   
  47                                                                                           0x05,              //ENDPOINT descriptor TYPE
  48                                                                                           0x81,              //address (IN) Endpoint 4 84
  49                                                                                           0x02,              //attributes  (BULK)    
  50                                                                                           0x40,0x00,         //max packet size (64)
  51                                                                                           0x0,              //Does not apply to Bulk endpoints
  52                                                                  
  53                                                                                           //Bulk-out Endpoint
  54                                                                                           0x07,              //length of this desc.   
  55                                                                                           0x05,              //ENDPOINT descriptor TYPE
C51 COMPILER V6.23a  MAIN                                                                  05/31/2003 10:20:29 PAGE 2   

  56                                                                                           0x02,              //address (OUT) Endpoint 5 05
  57                                                                                           0x02,              //attributes  (BULK)
  58                                                                                           0x40,0x00,         //max packet size (64)
  59                                                                                           0x0             //Does not apply to Bulk endpoints
  60                                                                                          };
  61          
  62          unsigned char ReadEp(unsigned char EpNum,unsigned char *Data)
  63          {
  64   1              unsigned char i=0,nLength;
  65   1              UEPNUM=EpNum;
  66   1      
  67   1              nLength=UBYCTX;
  68   1              while(nLength--) {Data[i++]=UEPDATX;/*printuf("%x ",Data[i]);*/}
  69   1      
  70   1              UEPSTAX&=~(RXOUTB0|RXOUTB1|RXSETUP);
  71   1              return(i);
  72   1      }
  73          
  74          void WriteEp(unsigned char EpNum,unsigned char nLength,unsigned char *Data)
  75          {
  76   1              unsigned char i=0;
  77   1              UEPNUM=EpNum;
  78   1              UEPSTAX|=DIR;//Set for status of a Control In transaction
  79   1              while(nLength--) UEPDATX=Data[i++];
  80   1              UEPSTAX|=TXRDY;//Sending the data,this action will switch between bank0 and bank1
  81   1              while(!(UEPSTAX&TXCMP)) ;
  82   1              UEPSTAX&=(~(TXCMP));//clear TXCMP
  83   1      }
  84          
  85          
  86          void Get_Status()
  87          {
  88   1              printu("Get_Status\n");
  89   1      }
  90          void Clear_Feature()
  91          {
  92   1              printu("Clear_Feature\n");
  93   1      }
  94          void Set_Feature()
  95          {
  96   1              printu("Set_Feature\n");
  97   1      }
  98          void Set_Address(unsigned char EpNum)
  99          {
 100   1              printu("Set_Address\n");
 101   1      //      unsigned char Test[]={0};
 102   1              WriteEp(0,0,0);//在Status阶段过后才能改变设备地址
 103   1      
 104   1              USBADDR|=EpNum;
 105   1              USBADDR|=FEN;
 106   1              USBCON|=FADDEN;
 107   1      
 108   1      //      printuf("\nSet_Address:%x\n",USBADDR);
 109   1      }
 110          void Get_Descriptor(unsigned char DesType,unsigned char nLength)
 111          {
 112   1              printu("Get_Descriptor\n");
 113   1              if(DesType==0x01) WriteEp(0,18,Device_Descriptor);
 114   1              if((DesType==0x02)&&(nLength==0x09)) WriteEp(0,9,Configuration_Descriptor_All);
 115   1              if((DesType==0x02)&&(nLength==0xff)) {WriteEp(0,32,Configuration_Descriptor_All);WriteEp(0,2,&Device_Desc
             -riptor[4]);}
 116   1              if((DesType==0x02)&&(nLength==0x20)) {WriteEp(0,32,Configuration_Descriptor_All);}
C51 COMPILER V6.23a  MAIN                                                                  05/31/2003 10:20:29 PAGE 3   

 117   1      
 118   1      //              printu("Get_Descriptor\n");
 119   1      }