?? f34x_usb_standard_requests.lst
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198 //-----------------------------------------------------------------------------
199 // Clear_Feature
200 //-----------------------------------------------------------------------------
201 //
202 // Return Value : None
203 // Parameters : None
204 //
205 // This routine can clear Halt Endpoint features on endpoint 1 and 2.
206 //
207 //-----------------------------------------------------------------------------
208
209 void Clear_Feature()
210 {
211 1
212 1 if ((USB_State != DEV_CONFIGURED) ||// Send procedural stall if device isn't configured
213 1 (Setup.bmRequestType == IN_DEVICE) ||// or request is made to host(remote wakeup not supported)
214 1 (Setup.bmRequestType == IN_INTERFACE) ||// or request is made to interface
215 1 Setup.wValue.c[MSB] || Setup.wIndex.c[MSB]||// or msbs of value or index set to non-zero value
216 1 Setup.wLength.c[MSB] || Setup.wLength.c[LSB])// or data length set to non-zero.
217 1 {
218 2 Force_Stall();
219 2 }
220 1
221 1 else
222 1 {
223 2 if ((Setup.bmRequestType == IN_ENDPOINT)&&// Verify that packet was directed at an endpoint
224 2 (Setup.wValue.c[LSB] == ENDPOINT_HALT) &&// the feature selected was HALT_ENDPOINT
225 2 ((Setup.wIndex.c[LSB] == IN_EP1) || // and that the request was directed at EP 1 in
226 2 (Setup.wIndex.c[LSB] == OUT_EP2))) // or EP 2 out
227 2 {
228 3 if (Setup.wIndex.c[LSB] == IN_EP1)
229 3 {
230 4 POLL_WRITE_BYTE (INDEX, 1); // Clear feature endpoint 1 halt
231 4 POLL_WRITE_BYTE (EINCSR1, rbInCLRDT);
232 4 Ep_Status[1] = EP_IDLE; // Set endpoint 1 status back to idle
233 4 }
234 3 else
235 3 {
236 4 POLL_WRITE_BYTE (INDEX, 2); // Clear feature endpoint 2 halt
237 4 POLL_WRITE_BYTE (EOUTCSR1, rbOutCLRDT);
238 4 Ep_Status[2] = EP_IDLE; // Set endpoint 2 status back to idle
239 4 }
240 3 }
241 2 else
C51 COMPILER V8.02 F34X_USB_STANDARD_REQUESTS 04/28/2008 13:24:09 PAGE 5
242 2 {
243 3 Force_Stall(); // Send procedural stall
244 3 }
245 2 }
246 1 POLL_WRITE_BYTE(INDEX, 0); // Reset Index to 0
247 1 if (Ep_Status[0] != EP_STALL)
248 1 {
249 2 // Indicate setup packet has been serviced
250 2 POLL_WRITE_BYTE(E0CSR, rbSOPRDY);
251 2 }
252 1 }
253
254 //-----------------------------------------------------------------------------
255 // Set_Feature
256 //-----------------------------------------------------------------------------
257 //
258 // Return Value : None
259 // Parameters : None
260 //
261 // This routine will set the EP Halt feature for endpoints 1 and 2
262 //
263 //-----------------------------------------------------------------------------
264
265 void Set_Feature(void)
266 {
267 1
268 1 if ((USB_State != DEV_CONFIGURED) ||// Make sure device is configured, setup data
269 1 (Setup.bmRequestType == IN_DEVICE) ||// is all valid and that request is directed at
270 1 (Setup.bmRequestType == IN_INTERFACE) ||// an endpoint
271 1 Setup.wValue.c[MSB] || Setup.wIndex.c[MSB]||
272 1 Setup.wLength.c[MSB] || Setup.wLength.c[LSB])
273 1 {
274 2 Force_Stall(); // Otherwise send stall to host
275 2 }
276 1
277 1 else
278 1 {
279 2 if ((Setup.bmRequestType == IN_ENDPOINT)&&// Make sure endpoint exists and that halt
280 2 (Setup.wValue.c[LSB] == ENDPOINT_HALT) &&// endpoint feature is selected
281 2 ((Setup.wIndex.c[LSB] == IN_EP1) ||
282 2 (Setup.wIndex.c[LSB] == OUT_EP2)))
283 2 {
284 3 if (Setup.wIndex.c[LSB] == IN_EP1)
285 3 {
286 4 POLL_WRITE_BYTE (INDEX, 1); // Set feature endpoint 1 halt
287 4 POLL_WRITE_BYTE (EINCSR1, rbInSDSTL);
288 4 Ep_Status[1] = EP_HALT;
289 4 }
290 3 else
291 3 {
292 4 POLL_WRITE_BYTE (INDEX, 2); // Set feature Ep2 halt
293 4 POLL_WRITE_BYTE (EOUTCSR1, rbOutSDSTL);
294 4 Ep_Status[2] = EP_HALT;
295 4 }
296 3 }
297 2 else
298 2 {
299 3 Force_Stall(); // Send procedural stall
300 3 }
301 2 }
302 1 POLL_WRITE_BYTE(INDEX, 0);
303 1 if (Ep_Status[0] != EP_STALL)
C51 COMPILER V8.02 F34X_USB_STANDARD_REQUESTS 04/28/2008 13:24:09 PAGE 6
304 1 {
305 2 // Indicate setup packet has been serviced
306 2 POLL_WRITE_BYTE(E0CSR, rbSOPRDY);
307 2 }
308 1 }
309
310 //-----------------------------------------------------------------------------
311 // Set_Address
312 //-----------------------------------------------------------------------------
313 //
314 // Return Value : None
315 // Parameters : None
316 //
317 // Set new function address
318 //
319 //-----------------------------------------------------------------------------
320
321 void Set_Address(void)
322 {
323 1 if ((Setup.bmRequestType != IN_DEVICE) ||// Request must be directed to device
324 1 Setup.wIndex.c[MSB] || Setup.wIndex.c[LSB]||// with index and length set to zero.
325 1 Setup.wLength.c[MSB] || Setup.wLength.c[LSB]||
326 1 Setup.wValue.c[MSB] || (Setup.wValue.c[LSB] & 0x80))
327 1 {
328 2 Force_Stall(); // Send stall if setup data invalid
329 2 }
330 1
331 1 Ep_Status[0] = EP_ADDRESS; // Set endpoint zero to update address next status phase
332 1 if (Setup.wValue.c[LSB] != 0)
333 1 {
334 2 USB_State = DEV_ADDRESS; // Indicate that device state is now address
335 2 }
336 1 else
337 1 {
338 2 USB_State = DEV_DEFAULT; // If new address was 0x00, return device to default
339 2 } // state
340 1 if (Ep_Status[0] != EP_STALL)
341 1 {
342 2 // Indicate setup packet has been serviced
343 2 POLL_WRITE_BYTE(E0CSR, rbSOPRDY);
344 2 }
345 1 }
346
347 //-----------------------------------------------------------------------------
348 // Get_Descriptor
349 //-----------------------------------------------------------------------------
350 //
351 // Return Value : None
352 // Parameters : None
353 //
354 // This routine sets the data pointer and size to correct
355 // descriptor and sets the endpoint status to transmit
356 //
357 //-----------------------------------------------------------------------------
358
359 void Get_Descriptor(void)
360 {
361 1
362 1 switch(Setup.wValue.c[MSB]) // Determine which type of descriptor
363 1 { // was requested, and set data ptr and
364 2 case DSC_DEVICE: // size accordingly
365 2 DataPtr = (BYTE*) &DeviceDesc;
C51 COMPILER V8.02 F34X_USB_STANDARD_REQUESTS 04/28/2008 13:24:09 PAGE 7
366 2 DataSize = DeviceDesc.bLength;
367 2 break;
368 2
369 2 case DSC_CONFIG:
370 2 DataPtr = (BYTE*) &ConfigDesc;
371 2 // Compiler Specific - The next statement reverses the
372 2 // bytes in the configuration descriptor for the compiler
373 2 DataSize = ConfigDesc.wTotalLength.c[MSB] + 256*ConfigDesc.wTotalLength.c[LSB];
374 2 break;
375 2
376 2 case DSC_STRING:
377 2 DataPtr = StringDescTable[Setup.wValue.c[LSB]];
378 2 // Can have a maximum of 255 strings
379 2 DataSize = *DataPtr;
380 2 break;
381 2
382 2 case DSC_INTERFACE:
383 2 DataPtr = (BYTE*) &InterfaceDesc;
384 2 DataSize = InterfaceDesc.bLength;
385 2 break;
386 2
387 2 case DSC_ENDPOINT:
388 2 if ((Setup.wValue.c[LSB] == IN_EP1) ||
389 2 (Setup.wValue.c[LSB] == OUT_EP2))
390 2 {
391 3 if (Setup.wValue.c[LSB] == IN_EP1)
392 3 {
393 4 DataPtr = (BYTE*) &Endpoint1Desc;
394 4 DataSize = Endpoint1Desc.bLength;
395 4 }
396 3 else
397 3 {
398 4 DataPtr = (BYTE*) &Endpoint2Desc;
399 4 DataSize = Endpoint2Desc.bLength;
400 4 }
401 3 }
402 2 else
403 2 {
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