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.

 120          void Get_Configuration()
 121          {
 122   1              printu("Get_Configuration\n");
 123   1      }
 124          void Set_Configuration(unsigned char wValue)
 125          {
 126   1      
 127   1              printu("Set_Configuration\n");
 128   1              if(wValue == 0) {
 129   2              /* put device in unconfigured state */
 130   2                       /* Disable all endpoints but EPP0. *///init_unconfig
 131   2      
 132   2                      UEPNUM=0x00;//Ep0 as control Endpoint
 133   2                      UEPCONX=0x80;
 134   2              
 135   2                      UEPNUM=0x01;//Ep1 as Bulk-in Endpoint
 136   2                      UEPCONX=0x86;
 137   2              
 138   2                      UEPNUM=0x02;//Ep2 as Bulk-out Endpoint
 139   2                      UEPCONX=0x82;
 140   2      
 141   2      //              WriteEp(0,&Device_Descriptor[4],2);
 142   2                      USBCON&=(~CONFG);
 143   2                      WriteEp(0,0,0);//状态传送阶段之前完成指定操作
 144   2      
 145   2              }
 146   1              else if(wValue == 1) {
 147   2              /* Configure device */
 148   2                      /* Enable generic/iso endpoints. init_config*/
 149   2      
 150   2                      UEPNUM=0x00;//Ep0 as control Endpoint
 151   2                      UEPCONX=0x80;
 152   2              
 153   2                      UEPNUM=0x01;//Ep1 as Bulk-in Endpoint
 154   2                      UEPCONX=0x86;
 155   2              
 156   2                      UEPNUM=0x02;//Ep2 as Bulk-out Endpoint
 157   2                      UEPCONX=0x82;
 158   2      
 159   2      
 160   2      //              WriteEp(0,&Device_Descriptor[4],2);
 161   2                      USBCON|=CONFG;
 162   2                      WriteEp(0,0,0);//状态传送阶段之前完成指定操作
 163   2      //              printuf("After Config,USBADDR:%x  ",USBADDR);
 164   2      //              printuf("USBCON:%x \n",USBCON);
 165   2      
 166   2              }
 167   1      //      printu("Set_Configuration ");
 168   1      }
 169          void Get_Interface()
 170          {
 171   1              printu("Get_Interface\n");
 172   1      }
 173          void Set_Interface()
 174          {
 175   1              WriteEp(0,0,0);
 176   1              printu("Set_Interface\n");
 177   1      }
 178          void Reserved()
C51 COMPILER V6.23a  MAIN                                                                  05/31/2003 10:20:29 PAGE 4   

 179          {}
 180          
 181          void Ep0Int()
 182          {
 183   1              unsigned char i,j;
 184   1              unsigned char ControlData[32]={0,};
 185   1      //      printu("\nEp0 Interrrupted!");
 186   1              i=ReadEp(0,ControlData);//读端点0数据
 187   1          for(j=0;j<i;j++) printuf("%x ",ControlData[j]);
 188   1              j=ControlData[0]&0x60;  //判断是否是USB标准请求
 189   1              if((j==0)&&i){                  //如果端点0数据长度非零且为标准请求
 190   2                      switch(ControlData[1]){ //分支处理
 191   3                                      case get_status                 :       Get_Status();break;
 192   3                                      case clear_feature              :       Clear_Feature();break;
 193   3              
 194   3                                      case set_feature                :       Set_Feature();break;
 195   3              
 196   3                                      case set_address                :       Set_Address(ControlData[2]);break;
 197   3                                      case get_descriptor             :       Get_Descriptor(ControlData[3],ControlData[6]);break;
 198   3              
 199   3                                      case get_configuration  :       Get_Configuration();break;
 200   3                                      case set_configuration  :       Set_Configuration(ControlData[2]);break;
 201   3                                      case get_interface              :       Get_Interface();break;
 202   3                                      case set_interface              :       Set_Interface();break;
 203   3                                      default                                 :       Reserved();break;
 204   3                              }
 205   2              }
 206   1              else if(ControlData[0]==0xa1){//非标准USB请求
 207   2                              WriteEp(0,0,0);
 208   2                      }
 209   1      }
 210          
 211          void main_txdone()
 212          {
 213   1              printu("Bulk_In Ep Intterupt\n");
 214   1      }
 215          void main_rxdone()
 216          {
 217   1              printu("Bulk_Out Ep Intterupt\n");
 218   1      }
 219          void main()
 220          {
 221   1              printu("Test Ep0 Intterupt\n");
 222   1              AtmelUSBInit(0,2,0);
 223   1              EpEnable();
 224   1              while(1){
 225   2                      if(UEPINT&EP0INT) Ep0Int();
 226   2                      if(UEPINT&EP1INT) main_txdone();
 227   2                      if(UEPINT&EP2INT) main_rxdone();
 228   2                      UEPINT=0;
 229   2              }
 230   1      }
 231          
 232          
 233          


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    600    ----
   CONSTANT SIZE    =    288    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
C51 COMPILER V6.23a  MAIN                                                                  05/31/2003 10:20:29 PAGE 5   

   DATA SIZE        =   ----      44
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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