fw.lst

CYPRESS公司SL811HS芯片 USB主机和USB设备的实现

 156          		TD_Poll();
 157          	}
 158          }
 159          
 160          // Device request parser
 161          void SetupCommand(void)
 162          {
 163          	void	*dscr_ptr;
 164          	DWORD	i;
 165          
 166          	switch(SETUPDAT[1])
 167          	{
 168          		case SC_GET_DESCRIPTOR:						// *** Get Descriptor
 169          			if(DR_GetDescriptor())
 170          				switch(SETUPDAT[3])			
 171          				{
 172          					case GD_DEVICE:				// Device
 173          						SUDPTRH = MSB(pDeviceDscr);
 174          						SUDPTRL = LSB(pDeviceDscr);
C51 COMPILER V6.10  FW                                                                     09/04/2002 22:22:08 PAGE 4   

 175          						break;
 176          					case GD_CONFIGURATION:			// Configuration
 177          						if(dscr_ptr = (void *)EZUSB_GetConfigDscr(SETUPDAT[2]))
 178          						{
 179          							SUDPTRH = MSB(dscr_ptr);
 180          							SUDPTRL = LSB(dscr_ptr);
 181          						}
 182          						else
 183          							EZUSB_STALL_EP0(); 	// Stall End Point 0
 184          						break;
 185          					case GD_STRING:				// String
 186          						if(dscr_ptr = (void *)EZUSB_GetStringDscr(SETUPDAT[2]))
 187          						{
 188          							// Workaround for rev D errata number 8
 189          							// If you're certain that you will never run on rev D,
 190          							// you can just do this:
 191          							// SUDPTRH = MSB(dscr_ptr);
 192          							// SUDPTRL = LSB(dscr_ptr);
 193          							STRINGDSCR *sdp;
 194          							BYTE len;
 195          
 196          							sdp = dscr_ptr;
 197          
 198          							len = sdp->length;
 199          							if (len > SETUPDAT[6]) 
 200          								len = SETUPDAT[6]; //limit to the requested length
 201          							
 202          							while (len)
 203          							{
 204          								for(i=0; i<min(len,64); i++)
 205          									*(IN0BUF+i) = *((BYTE xdata *)sdp+i);
 206          
 207          								//set length and arm Endpoint
 208          								EZUSB_SET_EP_BYTES(IN0BUF_ID,min(len,64));	
 209          								len -= min(len,64);
 210                                  (BYTE *)sdp += 64;
 211          
 212          								// Wait for it to go out (Rev C and above)
 213          								while(EP0CS & 0x04)
 214          									;
 215          							}
 216          
 217          							// Arm a 0 length packet just in case.  There was some reflector traffic about
 218          							// Apple hosts asking for too much data.  This will keep them happy and will
 219          							// not hurt valid hosts because the next SETUP will clear this.
 220          							EZUSB_SET_EP_BYTES(IN0BUF_ID,0);	
 221          							// Clear the HS-nak bit
 222          							EP0CS = bmHS;
 223          						}
 224          						else 
 225          							EZUSB_STALL_EP0();	// Stall End Point 0
 226          						break;
 227          					default:				// Invalid request
 228          						EZUSB_STALL_EP0();		// Stall End Point 0
 229          				}
 230          			break;
 231          		case SC_GET_INTERFACE:						// *** Get Interface
 232          			DR_GetInterface();
 233          			break;
 234          		case SC_SET_INTERFACE:						// *** Set Interface
 235          			DR_SetInterface();
 236          			break;
C51 COMPILER V6.10  FW                                                                     09/04/2002 22:22:08 PAGE 5   

 237          		case SC_SET_CONFIGURATION:					// *** Set Configuration
 238          			DR_SetConfiguration();
 239          			break;
 240          		case SC_GET_CONFIGURATION:					// *** Get Configuration
 241          			DR_GetConfiguration();
 242          			break;
 243          		case SC_GET_STATUS:						// *** Get Status
 244          			if(DR_GetStatus())
 245          				switch(SETUPDAT[0])
 246          				{
 247          					case GS_DEVICE:				// Device
 248          						IN0BUF[0] = ((BYTE)Rwuen << 1) | (BYTE)Selfpwr;
 249          						IN0BUF[1] = 0;
 250          						EZUSB_SET_EP_BYTES(IN0BUF_ID,2);
 251          						break;
 252          					case GS_INTERFACE:			// Interface
 253          						IN0BUF[0] = 0;
 254          						IN0BUF[1] = 0;
 255          						EZUSB_SET_EP_BYTES(IN0BUF_ID,2);
 256          						break;
 257          					case GS_ENDPOINT:			// End Point
 258          						IN0BUF[0] = EPIO[EPID(SETUPDAT[4])].cntrl & bmEPSTALL;
 259          						IN0BUF[1] = 0;
 260          						EZUSB_SET_EP_BYTES(IN0BUF_ID,2);
 261          						break;
 262          					default:				// Invalid Command
 263          						EZUSB_STALL_EP0();		// Stall End Point 0
 264          				}
 265          			break;
 266          		case SC_CLEAR_FEATURE:						// *** Clear Feature
 267          			if(DR_ClearFeature())
 268          				switch(SETUPDAT[0])
 269          				{
 270          					case FT_DEVICE:				// Device
 271          						if(SETUPDAT[2] == 1)
 272          							Rwuen = FALSE; 		// Disable Remote Wakeup
 273          						else
 274          							EZUSB_STALL_EP0();	// Stall End Point 0
 275          						break;
 276          					case FT_ENDPOINT:			// End Point
 277          						if(SETUPDAT[2] == 0)
 278                            {
 279          							EZUSB_UNSTALL_EP( EPID(SETUPDAT[4]) );
 280                               EZUSB_RESET_DATA_TOGGLE( SETUPDAT[4] );
 281                            }
 282          						else
 283          							EZUSB_STALL_EP0();	// Stall End Point 0
 284          						break;
 285          				}
 286          			break;
 287          		case SC_SET_FEATURE:						// *** Set Feature
 288          			if(DR_SetFeature())
 289          				switch(SETUPDAT[0])
 290          				{
 291          					case FT_DEVICE:				// Device
 292          						if(SETUPDAT[2] == 1)
 293          							Rwuen = TRUE;		// Enable Remote Wakeup
 294          						else
 295          							EZUSB_STALL_EP0();	// Stall End Point 0
 296          						break;
 297          					case FT_ENDPOINT:			// End Point
 298          						if(SETUPDAT[2] == 0)
C51 COMPILER V6.10  FW                                                                     09/04/2002 22:22:08 PAGE 6   

 299          							EZUSB_STALL_EP( EPID(SETUPDAT[4]) );
 300          						else
 301          							EZUSB_STALL_EP0();	 // Stall End Point 0
 302          						break;
 303          				}
 304          			break;
 305          		default:							// *** Invalid Command
 306          			if(DR_VendorCmnd())
 307          				EZUSB_STALL_EP0();				// Stall End Point 0
 308          	}
 309          
 310          	// Acknowledge handshake phase of device request
 311          	// Required for rev C does not effect rev B
 312          	EP0CS |= bmBIT1;
 313          }
 314          
 315          // Wake-up interrupt handler
 316          void resume_isr(void) interrupt WKUP_VECT
 317          {
 318          	EZUSB_CLEAR_RSMIRQ();
 319          }

C51 COMPILATION COMPLETE.  0 WARNING(S),  3 ERROR(S)