|
1 /* |
|
2 * Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies). |
|
3 * All rights reserved. |
|
4 * This component and the accompanying materials are made available |
|
5 * under the terms of "Eclipse Public License v1.0" |
|
6 * which accompanies this distribution, and is available |
|
7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
|
8 * |
|
9 * Initial Contributors: |
|
10 * Nokia Corporation - initial contribution. |
|
11 * |
|
12 * Contributors: |
|
13 * |
|
14 * Description: |
|
15 * |
|
16 */ |
|
17 |
|
18 #include <e32std.h> |
|
19 #include "CdcDataInterface.h" |
|
20 #include "ActiveReader.h" |
|
21 #include "ActiveWriter.h" |
|
22 #include "AcmPanic.h" |
|
23 #include "AcmUtils.h" |
|
24 #include "ActiveReadOneOrMoreReader.h" |
|
25 #include "ActiveDataAvailableNotifier.h" |
|
26 #include "inifile.h" |
|
27 #include <usb/usblogger.h> |
|
28 |
|
29 #ifdef __FLOG_ACTIVE |
|
30 _LIT8(KLogComponent, "ECACM"); |
|
31 #endif |
|
32 |
|
33 #ifdef __HEADLESS_ACM_TEST_CODE__ |
|
34 #pragma message ("Building headless ACM (performance test code for RDevUsbcClient)") |
|
35 #endif // __HEADLESS_ACM_TEST_CODE__ |
|
36 |
|
37 CCdcDataInterface::CCdcDataInterface(const TDesC16& aIfcName) |
|
38 /** |
|
39 * Overloaded Constructor using interface name. |
|
40 * @param aIfcName contains the interface name |
|
41 */ |
|
42 : CCdcInterfaceBase(aIfcName), |
|
43 iPacketSize(KDefaultMaxPacketTypeBulk) |
|
44 { |
|
45 } |
|
46 |
|
47 CCdcDataInterface* CCdcDataInterface::NewL(const TDesC16& aIfcName) |
|
48 /** |
|
49 * Create a new CCdcDataInterface object and construct it using interface name |
|
50 * This call will return an object with a valid USB configuration |
|
51 * |
|
52 * @param aParent Observer. |
|
53 * @param aIfcName Contains the interface name |
|
54 * @return A pointer to the new object |
|
55 */ |
|
56 { |
|
57 LOG_STATIC_FUNC_ENTRY |
|
58 |
|
59 LOGTEXT2(_L("\tData Ifc Name = %S"), &aIfcName); |
|
60 |
|
61 CCdcDataInterface* self = new (ELeave) CCdcDataInterface(aIfcName); |
|
62 CleanupStack::PushL(self); |
|
63 self->ConstructL(); |
|
64 CLEANUPSTACK_POP(self); |
|
65 return self; |
|
66 } |
|
67 |
|
68 void CCdcDataInterface::ConstructL() |
|
69 /** |
|
70 * Construct the object |
|
71 * This call registers the object with the USB device driver |
|
72 * |
|
73 * @param aParent Observer. |
|
74 */ |
|
75 { |
|
76 BaseConstructL(); |
|
77 |
|
78 iReadOneOrMoreReader = CActiveReadOneOrMoreReader::NewL(*this, iLdd, EEndpoint2); |
|
79 iReader = CActiveReader::NewL(*this, iLdd, EEndpoint2); |
|
80 iDataAvailableNotifier = CActiveDataAvailableNotifier::NewL(*this, iLdd, EEndpoint2); |
|
81 iWriter = CActiveWriter::NewL(*this, iLdd, EEndpoint1); |
|
82 iLinkState = CLinkStateNotifier::NewL(*this, iLdd); |
|
83 |
|
84 iLinkState->Start(); |
|
85 |
|
86 LOGTEXT(_L8("\tchecking ecacm.ini")); |
|
87 iHostCanHandleZLPs = EFalse; |
|
88 GetHostZLPHandlingFromFile(); |
|
89 LOGTEXT(_L8("\tfinished checking ecacm.ini")); |
|
90 } |
|
91 |
|
92 TInt CCdcDataInterface::SetUpInterface() |
|
93 /** |
|
94 * Retrieves the device capabilities and searches for suitable input and |
|
95 * output bulk endpoints. If suitable endpoints are found, an interface |
|
96 * descriptor for the endpoints is registered with the LDD. |
|
97 */ |
|
98 { |
|
99 LOGTEXT(_L8(">>CCdcDataInterface::SetUpInterface")); |
|
100 |
|
101 TUsbDeviceCaps dCaps; |
|
102 TInt ret = iLdd.DeviceCaps(dCaps); |
|
103 LOGTEXT(_L8("\tchecking result of DeviceCaps")); |
|
104 if ( ret ) |
|
105 { |
|
106 LOGTEXT2(_L8("<<CCdcDataInterface::SetUpInterface ret=%d"), ret); |
|
107 return ret; |
|
108 } |
|
109 |
|
110 TInt maxBulkPacketSize = (dCaps().iHighSpeed) ? KMaxPacketTypeBulkHS : KMaxPacketTypeBulkFS; |
|
111 const TUint KRequiredNumberOfEndpoints = 2; |
|
112 |
|
113 const TUint totalEndpoints = static_cast<TUint>(dCaps().iTotalEndpoints); |
|
114 LOGTEXT2(_L8("\tiTotalEndpoints = %d"), totalEndpoints); |
|
115 if ( totalEndpoints < KRequiredNumberOfEndpoints ) |
|
116 { |
|
117 LOGTEXT2(_L8("<<CCdcDataInterface::SetUpInterface ret=%d"), |
|
118 KErrGeneral); |
|
119 return KErrGeneral; |
|
120 } |
|
121 |
|
122 // Endpoints |
|
123 TUsbcEndpointData data[KUsbcMaxEndpoints]; |
|
124 TPtr8 dataptr(reinterpret_cast<TUint8*>(data), sizeof(data), sizeof(data)); |
|
125 ret = iLdd.EndpointCaps(dataptr); |
|
126 LOGTEXT(_L8("\tchecking result of EndpointCaps")); |
|
127 if ( ret ) |
|
128 { |
|
129 LOGTEXT2(_L8("<<CCdcDataInterface::SetUpInterface ret=%d"), ret); |
|
130 return ret; |
|
131 } |
|
132 |
|
133 // |
|
134 TUsbcInterfaceInfoBuf ifc; |
|
135 TBool foundIn = EFalse; |
|
136 TBool foundOut = EFalse; |
|
137 |
|
138 for ( TUint i = 0; !(foundIn && foundOut) && i < totalEndpoints; i++ ) |
|
139 { |
|
140 const TUsbcEndpointCaps* caps = &data[i].iCaps; |
|
141 __ASSERT_DEBUG(caps, |
|
142 _USB_PANIC(KAcmPanicCat, EPanicInternalError)); |
|
143 if (data[i].iInUse) |
|
144 continue; |
|
145 |
|
146 //get the max packet size it can potentially support |
|
147 //it's possible that it can support Isoch (1023) which is greater |
|
148 //than max for Bulk at 64 |
|
149 const TInt maxSize = Min ( maxBulkPacketSize, |
|
150 caps->MaxPacketSize() ); |
|
151 |
|
152 const TUint KBulkInFlags = KUsbEpTypeBulk | KUsbEpDirIn; |
|
153 const TUint KBulkOutFlags = KUsbEpTypeBulk | KUsbEpDirOut; |
|
154 |
|
155 // use EEndPoint1 for TX (IN) EEndpoint1 |
|
156 if (! foundIn && (caps->iTypesAndDir & KBulkInFlags) == KBulkInFlags) |
|
157 { |
|
158 |
|
159 ifc().iEndpointData[0].iType = KUsbEpTypeBulk; |
|
160 ifc().iEndpointData[0].iDir = KUsbEpDirIn; |
|
161 |
|
162 //get the max packet size it can potentially support |
|
163 //it's possible that it can support Isoch (1023) which is greater |
|
164 //than max for Bulk at 64 |
|
165 ifc().iEndpointData[0].iSize = maxSize; |
|
166 foundIn = ETrue; |
|
167 } |
|
168 // use EEndPoint2 for RX (OUT) endpoint |
|
169 else if ( !foundOut |
|
170 && (caps->iTypesAndDir & KBulkOutFlags) == KBulkOutFlags |
|
171 ) |
|
172 { |
|
173 // EEndpoint2 is going to be our RX (OUT, read) endpoint |
|
174 ifc().iEndpointData[1].iType = KUsbEpTypeBulk; |
|
175 ifc().iEndpointData[1].iDir = KUsbEpDirOut; |
|
176 |
|
177 //get the max packet size it can potentially support |
|
178 //it's possible that it can support Isoch (1023) which is greater |
|
179 //than max for Bulk at 64 |
|
180 ifc().iEndpointData[1].iSize = maxSize; |
|
181 foundOut = ETrue; |
|
182 } |
|
183 } |
|
184 |
|
185 if (! (foundIn && foundOut)) |
|
186 { |
|
187 LOGTEXT2(_L8("<<CCdcDataInterface::SetUpInterface ret=%d"), |
|
188 KErrGeneral); |
|
189 return KErrGeneral; |
|
190 } |
|
191 |
|
192 // If the device supports USB High-speed, then we request 64KB buffers |
|
193 // (otherwise the default 4KB ones will do). |
|
194 |
|
195 TUint bandwidthPriority = (EUsbcBandwidthOUTDefault | EUsbcBandwidthINDefault); |
|
196 if (dCaps().iHighSpeed) |
|
197 { |
|
198 bandwidthPriority = (EUsbcBandwidthOUTPlus2 | EUsbcBandwidthINPlus2); |
|
199 } |
|
200 |
|
201 ifc().iString = &iIfcName; |
|
202 ifc().iTotalEndpointsUsed = KRequiredNumberOfEndpoints; |
|
203 ifc().iClass.iClassNum = 0x0A; // Table 18- Data Interface Class |
|
204 ifc().iClass.iSubClassNum = 0x00; // Section 4.6- unused. |
|
205 ifc().iClass.iProtocolNum = 0x00; // Table 19- no class specific protocol required |
|
206 |
|
207 // Indicate that this interface does not expect any control transfers |
|
208 // from EP0. |
|
209 ifc().iFeatureWord |= KUsbcInterfaceInfo_NoEp0RequestsPlease; |
|
210 |
|
211 LOGTEXT(_L8("\tcalling SetInterface")); |
|
212 // Zero effectively indicates that alternate interfaces are not used. |
|
213 ret = iLdd.SetInterface(0, ifc, bandwidthPriority); |
|
214 |
|
215 LOGTEXT2(_L8("<<CCdcDataInterface::SetUpInterface ret=%d"), ret); |
|
216 return ret; |
|
217 } |
|
218 |
|
219 |
|
220 void CCdcDataInterface::MLSOStateChange(TInt aPacketSize) |
|
221 { |
|
222 iPacketSize = aPacketSize; |
|
223 } |
|
224 |
|
225 |
|
226 CCdcDataInterface::~CCdcDataInterface() |
|
227 /** |
|
228 * Destructor. Cancel and destroy the child classes. |
|
229 */ |
|
230 { |
|
231 LOG_FUNC |
|
232 |
|
233 delete iLinkState; |
|
234 delete iReadOneOrMoreReader; |
|
235 delete iReader; |
|
236 delete iWriter; |
|
237 delete iDataAvailableNotifier; |
|
238 } |
|
239 |
|
240 void CCdcDataInterface::Write(MWriteObserver& aObserver, |
|
241 const TDesC8& aDes, |
|
242 TInt aLen) |
|
243 /** |
|
244 * Write data down the interface |
|
245 * |
|
246 * @param aObserver The observer to notify of completion. |
|
247 * @param aDes Descriptor containing the data to be sent |
|
248 * @param aLen Length of the data to be sent |
|
249 */ |
|
250 { |
|
251 LOG_FUNC |
|
252 |
|
253 __ASSERT_DEBUG(!iWriteObserver, |
|
254 _USB_PANIC(KAcmPanicCat, EPanicInternalError)); |
|
255 |
|
256 iWriteObserver = &aObserver; |
|
257 |
|
258 __ASSERT_DEBUG(iWriter, _USB_PANIC(KAcmPanicCat, EPanicInternalError)); |
|
259 |
|
260 if ( iHostCanHandleZLPs ) |
|
261 { |
|
262 |
|
263 // Make sure the driver sends a Zero Length Packet if required (i.e. if the |
|
264 // data size is an exact multiple of the endpoint's packet size). |
|
265 TBool requestZlp = ( aLen % iPacketSize ) ? EFalse : ETrue; |
|
266 iWriter->Write(aDes, aLen, requestZlp); |
|
267 } |
|
268 else |
|
269 { |
|
270 iWriter->Write(aDes, aLen, EFalse); |
|
271 } |
|
272 |
|
273 LOGTEXT(_L8("<<CCdcDataInterface::Write")); |
|
274 } |
|
275 |
|
276 void CCdcDataInterface::WriteCompleted(TInt aError) |
|
277 /** |
|
278 * Called when a write request completes. |
|
279 * |
|
280 * @param aError Error. |
|
281 */ |
|
282 { |
|
283 LOGTEXT2(_L8(">>CCdcDataInterface::WriteCompleted aError=%d"), aError); |
|
284 |
|
285 #ifdef __HEADLESS_ACM_TEST_CODE__ |
|
286 // Issue another Read or ReadOneOrMore as appropriate. |
|
287 // If the Write completed with an error, we panic, as it's invalidating |
|
288 // the test. |
|
289 __ASSERT_DEBUG(aError == KErrNone, |
|
290 _USB_PANIC(KAcmPanicCat, EPanicInternalError)); |
|
291 switch ( iHeadlessReadType ) |
|
292 { |
|
293 case ERead: |
|
294 LOGTEXT2(_L8("__HEADLESS_ACM_TEST_CODE__- issuing Read for %d bytes"), |
|
295 iHeadlessReadLength); |
|
296 __ASSERT_DEBUG(iReader, _USB_PANIC(KAcmPanicCat, EPanicInternalError)); |
|
297 iReader->Read(iHeadlessAcmBuffer, iHeadlessReadLength); |
|
298 break; |
|
299 case EReadOneOrMore: |
|
300 LOGTEXT2(_L8("__HEADLESS_ACM_TEST_CODE__- issuing ReadOneOrMore for %d bytes"), |
|
301 iHeadlessReadLength); |
|
302 __ASSERT_DEBUG(iReadOneOrMoreReader, _USB_PANIC(KAcmPanicCat, EPanicInternalError)); |
|
303 iReadOneOrMoreReader->ReadOneOrMore(iHeadlessAcmBuffer, iHeadlessReadLength); |
|
304 break; |
|
305 case EUnknown: |
|
306 default: |
|
307 _USB_PANIC(KAcmPanicCat, EPanicInternalError); |
|
308 break; |
|
309 } |
|
310 #else |
|
311 // In case the write observer wants to post another write synchronously on |
|
312 // being informed that this write has completed, use this little 'temp' |
|
313 // fiddle. |
|
314 __ASSERT_DEBUG(iWriteObserver, |
|
315 _USB_PANIC(KAcmPanicCat, EPanicInternalError)); |
|
316 MWriteObserver* temp = iWriteObserver; |
|
317 iWriteObserver = NULL; |
|
318 LOGTEXT(_L8("\tcalling WriteCompleted on observer")); |
|
319 temp->WriteCompleted(aError); |
|
320 #endif // __HEADLESS_ACM_TEST_CODE__ |
|
321 |
|
322 LOGTEXT(_L8("<<CCdcDataInterface::WriteCompleted")); |
|
323 } |
|
324 |
|
325 void CCdcDataInterface::CancelWrite() |
|
326 /** |
|
327 * Cancel an outstanding write request |
|
328 */ |
|
329 { |
|
330 LOG_FUNC |
|
331 |
|
332 __ASSERT_DEBUG(iWriter, _USB_PANIC(KAcmPanicCat, EPanicInternalError)); |
|
333 |
|
334 iWriter->Cancel(); |
|
335 |
|
336 iWriteObserver = NULL; |
|
337 } |
|
338 |
|
339 void CCdcDataInterface::Read(MReadObserver& aObserver, |
|
340 TDes8& aDes, |
|
341 TInt aMaxLen) |
|
342 /** |
|
343 * Read data from the interface. As the LDD supports an appropriate function, |
|
344 * this request can be passed straight down. |
|
345 * |
|
346 * @param aObserver The observer to notify of completion. |
|
347 * @param aDes Descriptor to put the read data in |
|
348 * @param aMaxLen Number of bytes to read |
|
349 */ |
|
350 { |
|
351 LOG_FUNC |
|
352 |
|
353 #ifdef __HEADLESS_ACM_TEST_CODE__ |
|
354 LOGTEXT(_L8("__HEADLESS_ACM_TEST_CODE__")); |
|
355 // Issue a Read using our special internal buffer. |
|
356 iHeadlessReadType = ERead; |
|
357 iHeadlessReadLength = aMaxLen; |
|
358 static_cast<void>(&aObserver); |
|
359 static_cast<void>(&aDes); |
|
360 __ASSERT_DEBUG(aMaxLen <= iHeadlessAcmBuffer.MaxLength(), |
|
361 _USB_PANIC(KAcmPanicCat, EPanicInternalError)); |
|
362 __ASSERT_DEBUG(iReader, _USB_PANIC(KAcmPanicCat, EPanicInternalError)); |
|
363 iReader->Read(iHeadlessAcmBuffer, aMaxLen); |
|
364 #else |
|
365 __ASSERT_DEBUG(!iReadObserver, |
|
366 _USB_PANIC(KAcmPanicCat, EPanicInternalError)); |
|
367 iReadObserver = &aObserver; |
|
368 |
|
369 __ASSERT_DEBUG(iReader, _USB_PANIC(KAcmPanicCat, EPanicInternalError)); |
|
370 iReader->Read(aDes, aMaxLen); |
|
371 #endif // __HEADLESS_ACM_TEST_CODE__ |
|
372 } |
|
373 |
|
374 void CCdcDataInterface::ReadOneOrMore(MReadOneOrMoreObserver& aObserver, |
|
375 TDes8& aDes, |
|
376 TInt aMaxLen) |
|
377 /** |
|
378 * Read a given amount of data from the interface, but complete if any data |
|
379 * arrives. |
|
380 * |
|
381 * @param aObserver The observer to notify of completion. |
|
382 * @param aDes Descriptor to put the read data in |
|
383 * @param aMaxLen Number of bytes to read |
|
384 */ |
|
385 { |
|
386 LOG_FUNC |
|
387 |
|
388 #ifdef __HEADLESS_ACM_TEST_CODE__ |
|
389 LOGTEXT(_L8("__HEADLESS_ACM_TEST_CODE__")); |
|
390 // Issue a ReadOneOrMore using our special internal buffer. |
|
391 iHeadlessReadType = EReadOneOrMore; |
|
392 iHeadlessReadLength = aMaxLen; |
|
393 static_cast<void>(&aObserver); |
|
394 static_cast<void>(&aDes); |
|
395 __ASSERT_DEBUG(aMaxLen <= iHeadlessAcmBuffer.MaxLength(), |
|
396 _USB_PANIC(KAcmPanicCat, EPanicInternalError)); |
|
397 __ASSERT_DEBUG(iReadOneOrMoreReader, |
|
398 _USB_PANIC(KAcmPanicCat, EPanicInternalError)); |
|
399 iReadOneOrMoreReader->ReadOneOrMore(iHeadlessAcmBuffer, aMaxLen); |
|
400 #else |
|
401 __ASSERT_DEBUG(!iReadOneOrMoreObserver, |
|
402 _USB_PANIC(KAcmPanicCat, EPanicInternalError)); |
|
403 iReadOneOrMoreObserver = &aObserver; |
|
404 |
|
405 __ASSERT_DEBUG(iReadOneOrMoreReader, |
|
406 _USB_PANIC(KAcmPanicCat, EPanicInternalError)); |
|
407 iReadOneOrMoreReader->ReadOneOrMore(aDes, aMaxLen); |
|
408 #endif // __HEADLESS_ACM_TEST_CODE__ |
|
409 } |
|
410 |
|
411 void CCdcDataInterface::ReadOneOrMoreCompleted(TInt aError) |
|
412 /** |
|
413 * The completion function, called when a ReadOneOrMore request is completed |
|
414 * by the LDD. |
|
415 * |
|
416 * @param aError The result of the read request. |
|
417 */ |
|
418 { |
|
419 LOGTEXT2(_L8(">>CCdcDataInterface::ReadOneOrMoreCompleted aError=%d"), |
|
420 aError); |
|
421 |
|
422 #ifdef __HEADLESS_ACM_TEST_CODE__ |
|
423 LOGTEXT2(_L8("__HEADLESS_ACM_TEST_CODE__- issuing Write for %d bytes"), |
|
424 iHeadlessAcmBuffer.Length()); |
|
425 // Write back the data just read. |
|
426 // If the ReadOneOrMore completed with an error, we panic, as it's |
|
427 // invalidating the test. |
|
428 __ASSERT_DEBUG(aError == KErrNone, |
|
429 _USB_PANIC(KAcmPanicCat, EPanicInternalError)); |
|
430 __ASSERT_DEBUG(iWriter, _USB_PANIC(KAcmPanicCat, EPanicInternalError)); |
|
431 iWriter->Write(iHeadlessAcmBuffer, iHeadlessAcmBuffer.Length(), EFalse); |
|
432 #else |
|
433 __ASSERT_DEBUG(iReadOneOrMoreObserver, |
|
434 _USB_PANIC(KAcmPanicCat, EPanicInternalError)); |
|
435 |
|
436 // See comment in WriteCompleted. |
|
437 MReadOneOrMoreObserver* temp = iReadOneOrMoreObserver; |
|
438 iReadOneOrMoreObserver = NULL; |
|
439 LOGTEXT(_L8("\tcalling ReadOneOrMoreCompleted on observer")); |
|
440 temp->ReadOneOrMoreCompleted(aError); |
|
441 #endif // __HEADLESS_ACM_TEST_CODE__ |
|
442 |
|
443 LOGTEXT(_L8("<<CCdcDataInterface::ReadOneOrMoreCompleted")); |
|
444 } |
|
445 |
|
446 void CCdcDataInterface::ReadCompleted(TInt aError) |
|
447 /** |
|
448 * Called by the active reader object when it completes. |
|
449 * |
|
450 * @param aError Error. |
|
451 */ |
|
452 { |
|
453 LOGTEXT2(_L8(">>CCdcDataInterface::ReadCompleted aError=%d"), aError); |
|
454 |
|
455 #ifdef __HEADLESS_ACM_TEST_CODE__ |
|
456 LOGTEXT2(_L8("__HEADLESS_ACM_TEST_CODE__- issuing Write for %d bytes"), |
|
457 iHeadlessAcmBuffer.Length()); |
|
458 // Write back the data just read. |
|
459 // If the Read completed with an error, we panic, as it's invalidating the |
|
460 // test. |
|
461 __ASSERT_DEBUG(aError == KErrNone, |
|
462 _USB_PANIC(KAcmPanicCat, EPanicInternalError)); |
|
463 __ASSERT_DEBUG(iWriter, _USB_PANIC(KAcmPanicCat, EPanicInternalError)); |
|
464 iWriter->Write(iHeadlessAcmBuffer, iHeadlessAcmBuffer.Length(), EFalse); |
|
465 #else |
|
466 __ASSERT_DEBUG(iReadObserver, |
|
467 _USB_PANIC(KAcmPanicCat, EPanicInternalError)); |
|
468 |
|
469 // See comment in WriteCompleted. |
|
470 MReadObserver* temp = iReadObserver; |
|
471 iReadObserver = NULL; |
|
472 LOGTEXT(_L8("\tcalled ReadCompleted on observer")); |
|
473 temp->ReadCompleted(aError); |
|
474 #endif // __HEADLESS_ACM_TEST_CODE__ |
|
475 |
|
476 LOGTEXT(_L8("<<CCdcDataInterface::ReadCompleted")); |
|
477 } |
|
478 |
|
479 void CCdcDataInterface::CancelRead() |
|
480 /** |
|
481 * Cancel an outstanding read request |
|
482 */ |
|
483 { |
|
484 LOG_FUNC |
|
485 |
|
486 __ASSERT_DEBUG(iReader, _USB_PANIC(KAcmPanicCat, EPanicInternalError)); |
|
487 __ASSERT_DEBUG(iReadOneOrMoreReader, |
|
488 _USB_PANIC(KAcmPanicCat, EPanicInternalError)); |
|
489 |
|
490 iReader->Cancel(); |
|
491 iReadOneOrMoreReader->Cancel(); |
|
492 iReadObserver = NULL; |
|
493 iReadOneOrMoreObserver = NULL; |
|
494 } |
|
495 |
|
496 |
|
497 void CCdcDataInterface::GetHostZLPHandlingFromFile() |
|
498 /** |
|
499 * Opens the ECACM.ini file to check on the capabilities of the host device. |
|
500 * If the ini file cannot be found or read successfully, the default setting i.e. the |
|
501 * host device CANNOT handle Zero Length Packets (set in CCdcAcmClass::ConstructL()), |
|
502 * is kept. |
|
503 */ |
|
504 { |
|
505 LOG_FUNC |
|
506 |
|
507 CIniFile* iniFile = NULL; |
|
508 |
|
509 _LIT(KEcacmIniFilename, "ecacm.ini" ); |
|
510 _LIT(KEcacmIniFilePath, "\\system\\data\\" ); |
|
511 |
|
512 TRAPD(error, iniFile = CIniFile::NewL(KEcacmIniFilename, KEcacmIniFilePath)); |
|
513 |
|
514 if (error == KErrNone) |
|
515 { |
|
516 TInt hostHandlesZLPs = 1; |
|
517 |
|
518 _LIT(KHostUSBDeviceDriver, "HostUSBDeviceDriver"); |
|
519 _LIT(KCanHandleZLP, "CanHandleZLP"); |
|
520 |
|
521 if ( iniFile->FindVar(KHostUSBDeviceDriver, KCanHandleZLP(), hostHandlesZLPs)) |
|
522 { |
|
523 iHostCanHandleZLPs = (( hostHandlesZLPs == 1 ) ? ETrue : EFalse ); |
|
524 |
|
525 LOGTEXT2(_L8("\tecacm.ini: CanHandleZLP=%d"), hostHandlesZLPs); |
|
526 } |
|
527 |
|
528 delete iniFile; |
|
529 } |
|
530 } |
|
531 |
|
532 void CCdcDataInterface::NotifyDataAvailableCompleted(TInt aError) |
|
533 /** |
|
534 * Called by the active data available notifier object when it completes. |
|
535 * |
|
536 * @param aError Error. |
|
537 */ |
|
538 { |
|
539 LOGTEXT2(_L8(">>CCdcDataInterface::NotifyDataAvailableCompleted aError=%d"), aError); |
|
540 |
|
541 // See comment in WriteCompleted. |
|
542 MNotifyDataAvailableObserver* temp = iNotifyDataAvailableObserver; |
|
543 iNotifyDataAvailableObserver = NULL; |
|
544 LOGTEXT(_L8("\tcalled NotifyDataAvailableCompleted on observer")); |
|
545 temp->NotifyDataAvailableCompleted(aError); |
|
546 |
|
547 LOGTEXT(_L8("<<CCdcDataInterface::NotifyDataAvailableCompleted")); |
|
548 } |
|
549 |
|
550 void CCdcDataInterface::NotifyDataAvailable(MNotifyDataAvailableObserver& aObserver) |
|
551 /** |
|
552 * Complete if any data arrives. |
|
553 * |
|
554 * @param aObserver The observer to notify of completion. |
|
555 */ |
|
556 { |
|
557 LOG_FUNC |
|
558 |
|
559 __ASSERT_DEBUG(!iNotifyDataAvailableObserver, _USB_PANIC(KAcmPanicCat, EPanicInternalError)); |
|
560 iNotifyDataAvailableObserver = &aObserver; |
|
561 |
|
562 __ASSERT_DEBUG(iDataAvailableNotifier, |
|
563 _USB_PANIC(KAcmPanicCat, EPanicInternalError)); |
|
564 iDataAvailableNotifier->NotifyDataAvailable(); |
|
565 } |
|
566 |
|
567 void CCdcDataInterface::CancelNotifyDataAvailable() |
|
568 /** |
|
569 * Cancel notification of arrival of data. |
|
570 */ |
|
571 { |
|
572 LOG_FUNC |
|
573 |
|
574 __ASSERT_DEBUG(iDataAvailableNotifier, _USB_PANIC(KAcmPanicCat, EPanicInternalError)); |
|
575 |
|
576 iDataAvailableNotifier->Cancel(); |
|
577 iNotifyDataAvailableObserver = NULL; |
|
578 } |
|
579 |
|
580 // |
|
581 // End of file |