NTSTATUS SelectInterfaces( _In_ WDFDEVICE Device ) /*++ Routine Description: This helper routine selects the configuration, interface and creates a context for every pipe (end point) in that interface. Arguments: Device - Handle to a framework device Return Value: NT status value --*/ { WDF_USB_DEVICE_SELECT_CONFIG_PARAMS configParams; NTSTATUS status = STATUS_SUCCESS; PDEVICE_CONTEXT pDeviceContext; WDFUSBPIPE pipe; WDF_USB_PIPE_INFORMATION pipeInfo; UCHAR index; UCHAR numberConfiguredPipes; WDFUSBINTERFACE usbInterface; PAGED_CODE(); pDeviceContext = GetDeviceContext(Device); WDF_USB_DEVICE_SELECT_CONFIG_PARAMS_INIT_SINGLE_INTERFACE( &configParams); usbInterface = WdfUsbTargetDeviceGetInterface(pDeviceContext->UsbDevice, 0); if (NULL == usbInterface) { status = STATUS_UNSUCCESSFUL; TraceEvents(TRACE_LEVEL_ERROR, DBG_PNP, "WdfUsbTargetDeviceGetInterface 0 failed %!STATUS! \n", status); return status; } configParams.Types.SingleInterface.ConfiguredUsbInterface = usbInterface; configParams.Types.SingleInterface.NumberConfiguredPipes = WdfUsbInterfaceGetNumConfiguredPipes(usbInterface); pDeviceContext->UsbInterface = configParams.Types.SingleInterface.ConfiguredUsbInterface; numberConfiguredPipes = configParams.Types.SingleInterface.NumberConfiguredPipes; // // Get pipe handles // for(index=0; index < numberConfiguredPipes; index++) { WDF_USB_PIPE_INFORMATION_INIT(&pipeInfo); pipe = WdfUsbInterfaceGetConfiguredPipe( pDeviceContext->UsbInterface, index, //PipeIndex, &pipeInfo ); // // Tell the framework that it's okay to read less than // MaximumPacketSize // WdfUsbTargetPipeSetNoMaximumPacketSizeCheck(pipe); if(WdfUsbPipeTypeInterrupt == pipeInfo.PipeType) { TraceEvents(TRACE_LEVEL_INFORMATION, DBG_IOCTL, "Interrupt Pipe is 0x%p\n", pipe); pDeviceContext->InterruptPipe = pipe; } if(WdfUsbPipeTypeBulk == pipeInfo.PipeType && WdfUsbTargetPipeIsInEndpoint(pipe)) { TraceEvents(TRACE_LEVEL_INFORMATION, DBG_IOCTL, "BulkInput Pipe is 0x%p\n", pipe); pDeviceContext->BulkReadPipe = pipe; } if(WdfUsbPipeTypeBulk == pipeInfo.PipeType && WdfUsbTargetPipeIsOutEndpoint(pipe)) { TraceEvents(TRACE_LEVEL_INFORMATION, DBG_IOCTL, "BulkOutput Pipe is 0x%p\n", pipe); pDeviceContext->BulkWritePipe = pipe; } } // // If we didn't find all the 3 pipes, fail the start. // if(!(pDeviceContext->BulkWritePipe && pDeviceContext->BulkReadPipe && pDeviceContext->InterruptPipe)) { status = STATUS_INVALID_DEVICE_STATE; TraceEvents(TRACE_LEVEL_ERROR, DBG_PNP, "Device is not configured properly %!STATUS!\n", status); return status; } return status; }
NTSTATUS Interface_InitContext(__in PDEVICE_CONTEXT deviceContext, __in PINTERFACE_CONTEXT interfaceContext) { NTSTATUS status = STATUS_SUCCESS; UCHAR pipeIndex; if (interfaceContext->Interface == WDF_NO_HANDLE) { // interface indexes are assigned only once during configuration. // memory may be corrupt // invalid config descriptor? // WDF decided not to give us an interface handle for some unknown reason USBERR("WdfUsbTargetDeviceGetInterface returned a null interface handle at index %u\n", interfaceContext->InterfaceIndex); return STATUS_FILE_CORRUPT_ERROR; } // get the configured alt setting index for this inteface interfaceContext->SettingIndex = WdfUsbInterfaceGetConfiguredSettingIndex(interfaceContext->Interface); // get the interface descriptor WdfUsbInterfaceGetDescriptor( interfaceContext->Interface, interfaceContext->SettingIndex, &interfaceContext->InterfaceDescriptor); // get the number of configured pipes interfaceContext->PipeCount = WdfUsbInterfaceGetNumConfiguredPipes(interfaceContext->Interface); // get the pipe handles and information for(pipeIndex = 0; pipeIndex < interfaceContext->PipeCount; pipeIndex++) { WDF_USB_PIPE_INFORMATION pipeInfo; WDFUSBPIPE pipe; PPIPE_CONTEXT pipeContext; // get the pipe handle and information WDF_USB_PIPE_INFORMATION_INIT(&pipeInfo); pipe = WdfUsbInterfaceGetConfiguredPipe(interfaceContext->Interface, pipeIndex, &pipeInfo); if (!pipe) { USBERR("WdfUsbInterfaceGetConfiguredPipe returned a null pipe handle at index %u\n", pipeIndex); // make sure we can't use this pipe interfaceContext->PipeCount = pipeIndex; status = STATUS_INSUFFICIENT_RESOURCES; return status; } // get the pipe context by endpoint id from the master pipe list // this is never null pipeContext = GetPipeContextByID(deviceContext, pipeInfo.EndpointAddress); // set the pipe context by index in the interface context interfaceContext->PipeContextByIndex[pipeIndex] = pipeContext; // update the pipe information // this needs to be done BEFORE calling Policy_InitPipe RtlCopyMemory(&pipeContext->PipeInformation, &pipeInfo, sizeof(WDF_USB_PIPE_INFORMATION)); // set the default pipe polices // NOTE: This is done only once for any given endpoint ID Policy_InitPipe(deviceContext, pipeContext); // always update the pipe handle pipeContext->Pipe = pipe; pipeInfo.MaximumTransferSize = Pipe_CalcMaxTransferSize(IsHighSpeedDevice(deviceContext), pipeInfo.PipeType, pipeInfo.MaximumPacketSize, pipeInfo.MaximumTransferSize); pipeContext->PipeInformation.MaximumTransferSize = pipeInfo.MaximumTransferSize; USBDBG("configured %s pipe: PipeID=%02Xh MaximumPacketSize=%u MaximumTransferSize=%u PipeType=%s\n", GetEndpointDirString(pipeInfo.EndpointAddress), pipeInfo.EndpointAddress, pipeInfo.MaximumPacketSize, pipeInfo.MaximumTransferSize, GetPipeTypeString(pipeInfo.PipeType)); } return status; }
// 并行处理 VOID CY001Drv::DeviceIoControlParallel(IN WDFQUEUE Queue, IN WDFREQUEST Request, IN size_t OutputBufferLength, IN size_t InputBufferLength, IN ULONG IoControlCode) { NTSTATUS status = STATUS_SUCCESS; ULONG ulRetLen = 0; size_t size = 0; void* pBufferInput = NULL; void* pBufferOutput = NULL; KDBG(DPFLTR_INFO_LEVEL, "[DeviceIoControlParallel] CtlCode:0x%0.8X", IoControlCode); // 取得输入缓冲区,判断其有效性 if(InputBufferLength){ status = WdfRequestRetrieveInputBuffer(Request, InputBufferLength, &pBufferInput, &size); if(status != STATUS_SUCCESS || pBufferInput == NULL || size < InputBufferLength){ WdfRequestComplete(Request, STATUS_INVALID_PARAMETER); return; } } // 取得输出缓冲区,判断其有效性 if(OutputBufferLength){ status = WdfRequestRetrieveOutputBuffer(Request, OutputBufferLength, &pBufferOutput, &size); if(status != STATUS_SUCCESS || pBufferOutput == NULL || size < OutputBufferLength){ WdfRequestComplete(Request, STATUS_INVALID_PARAMETER); return; } } // // 下面是主处理过程。 // switch(IoControlCode) { // 取得驱动的版本信息 case IOCTL_GET_DRIVER_VERSION: { PDRIVER_VERSION pVersion = (PDRIVER_VERSION)pBufferOutput; ULONG length; char tcsBuffer[120]; KDBG(DPFLTR_INFO_LEVEL, "IOCTL_GET_DRIVER_VERSION"); if(OutputBufferLength < sizeof(DRIVER_VERSION)){ status = STATUS_BUFFER_TOO_SMALL; break; } pVersion->DriverType = DR_WDF; pVersion->FirmwareType = FW_NOT_CY001; ulRetLen = sizeof(DRIVER_VERSION);// 告示返回长度 // 根据String描述符,判断Firmware代码是否已经被加载。 GetStringDes(2, 0, tcsBuffer, 120, &length); if(length){ WCHAR* pCyName = L"CY001 V"; size_t len; int nIndex; if(length < 8) break; RtlStringCchLengthW(pCyName, 7, &len); for(nIndex = 0; nIndex < len; nIndex++){ if(pCyName[nIndex] != ((WCHAR*)tcsBuffer)[nIndex]) break; } if(nIndex == len) pVersion->FirmwareType = FW_CY001; // 完全相符,说明新版Firmware已经加载到开发板。 } break; } // 收到App发送过来的一个同步Request,我们应该把它保存到同步Queue中,等到有同步事件发生的时候再从Queue中取出并完成。 case IOCTL_USB_SYNC: KDBG(DPFLTR_INFO_LEVEL, "IOCTL_USB_SYNC"); status = WdfRequestForwardToIoQueue(Request, m_hAppSyncManualQueue); // 直接返回,不调用WdfRequestComplete函数。 // 请求者将不会为此而等待;请求的完成在将来的某个时刻。 // 这就是所谓的异步处理之要义了。 if(NT_SUCCESS(status)) return; break; // 清空同步队列中的所有请求 case IOCTL_USB_SYNC_RELEASE: KDBG(DPFLTR_INFO_LEVEL, "IOCTL_USB_SYNC"); ClearSyncQueue(); break; // 应用程序退出,取消所有被阻塞的请求。 case IOCTL_APP_EXIT_CANCEL: // 取消USB设备的所有IO操作。它将连带取消所有Pipe的IO操作。 //WdfIoTargetStop(WdfUsbTargetDeviceGetIoTarget(m_hUsbDevice), WdfIoTargetCancelSentIo); break; // 取得当前的配置号.总是设置为0,因为在WDF框架中,0以外的配置是不被支持的。 case IOCTL_USB_GET_CURRENT_CONFIG: { KDBG(DPFLTR_INFO_LEVEL, "IOCTL_USB_GET_CURRENT_CONFIG"); if(InputBufferLength < 4){ status = STATUS_INVALID_PARAMETER; break; } *(PULONG)pBufferInput = 0;// 直接赋值0,即总是选择0号配置。也可以发送URB到总线获取当前配置选项。 ulRetLen = sizeof(ULONG); break; } case IOCTL_USB_ABORTPIPE: { ULONG pipenum = *((PULONG) pBufferOutput); KDBG(DPFLTR_INFO_LEVEL, "IOCTL_USB_ABORTPIPE"); status = AbortPipe(pipenum); } break; // 获取Pipe信息 case IOCTL_USB_GET_PIPE_INFO: { // 遍历获取Pipe信息,复制到输出缓冲中。 BYTE byCurSettingIndex = 0; BYTE byPipeNum = 0; BYTE index; USB_INTERFACE_DESCRIPTOR interfaceDescriptor; WDF_USB_PIPE_INFORMATION pipeInfor; KDBG(DPFLTR_INFO_LEVEL, "IOCTL_USB_GET_PIPE_INFO"); // 取得Pipe数。根据Pipe数计算缓冲区长度 byCurSettingIndex = WdfUsbInterfaceGetConfiguredSettingIndex(m_hUsbInterface); WdfUsbInterfaceGetDescriptor(m_hUsbInterface, byCurSettingIndex, &interfaceDescriptor); byPipeNum = WdfUsbInterfaceGetNumConfiguredPipes(m_hUsbInterface); if(OutputBufferLength < byPipeNum * sizeof(pipeInfor)){ status = STATUS_BUFFER_TOO_SMALL; // 缓冲区不足 }else{ ulRetLen = byPipeNum*sizeof(pipeInfor); // 遍历获取全部管道信息,拷贝到输出缓冲中。 // 应用程序得到输出缓冲的时候,也应该使用WDF_USB_PIPE_INFORMATION结构体解析缓冲区。 for(index = 0; index < byPipeNum; index++) { WDF_USB_PIPE_INFORMATION_INIT(&pipeInfor); WdfUsbInterfaceGetEndpointInformation(m_hUsbInterface, byCurSettingIndex, index, &pipeInfor); RtlCopyMemory((PUCHAR)pBufferOutput + index*pipeInfor.Size, &pipeInfor, sizeof(pipeInfor)); } } } break; // 获取设备描述符 case IOCTL_USB_GET_DEVICE_DESCRIPTOR: { USB_DEVICE_DESCRIPTOR UsbDeviceDescriptor; WdfUsbTargetDeviceGetDeviceDescriptor(m_hUsbDevice, &UsbDeviceDescriptor); KDBG(DPFLTR_INFO_LEVEL, "IOCTL_USB_GET_DEVICE_DESCRIPTOR"); // 判断输入缓冲区的长度是否足够长 if(OutputBufferLength < UsbDeviceDescriptor.bLength) status = STATUS_BUFFER_TOO_SMALL; else{ RtlCopyMemory(pBufferOutput, &UsbDeviceDescriptor, UsbDeviceDescriptor.bLength); ulRetLen = UsbDeviceDescriptor.bLength; } break; } // 获取字符串描述符 case IOCTL_USB_GET_STRING_DESCRIPTOR: { PGET_STRING_DESCRIPTOR Input = (PGET_STRING_DESCRIPTOR)pBufferInput; KDBG(DPFLTR_INFO_LEVEL, "IOCTL_USB_GET_STRING_DESCRIPTOR"); status = GetStringDes(Input->Index, Input->LanguageId, pBufferOutput, OutputBufferLength, &ulRetLen); // 由字符长度调整为字节长度 if(NT_SUCCESS(status) && ulRetLen > 0) ulRetLen *= (sizeof(WCHAR)/sizeof(char)); break; } // 获取配置描述信息。 case IOCTL_USB_GET_CONFIGURATION_DESCRIPTOR: { KDBG(DPFLTR_INFO_LEVEL, "IOCTL_USB_GET_CONFIGURATION_DESCRIPTOR"); // 首先获得配置描述符的长度。 status = WdfUsbTargetDeviceRetrieveConfigDescriptor(m_hUsbDevice, NULL, (USHORT*)&size); if(!NT_SUCCESS(status) && status != STATUS_BUFFER_TOO_SMALL) break; // 输出缓冲区不够长 if(OutputBufferLength < size) break; // 正式取得配置描述符。 status = WdfUsbTargetDeviceRetrieveConfigDescriptor(m_hUsbDevice, pBufferOutput, (USHORT*)&size); if(!NT_SUCCESS(status)) break; ulRetLen = size; break; } // 根据可选值配置接口 case IOCTL_USB_SET_INTERFACE: { BYTE byAlterSetting = *(BYTE*)pBufferInput; BYTE byCurSetting = WdfUsbInterfaceGetConfiguredSettingIndex(m_hUsbInterface); // 当前Alternate值 KDBG(DPFLTR_INFO_LEVEL, "IOCTL_USB_SETINTERFACE"); if(InputBufferLength < 1 || OutputBufferLength < 1) { status = STATUS_BUFFER_TOO_SMALL; break; } // 如果传入的可选值与当前的不同,则重新配置接口; // 否则直接返回。 if(byCurSetting != byAlterSetting) { WDF_USB_INTERFACE_SELECT_SETTING_PARAMS par; WDF_USB_INTERFACE_SELECT_SETTING_PARAMS_INIT_SETTING(&par, byAlterSetting); status = WdfUsbInterfaceSelectSetting(m_hUsbInterface, NULL, &par); } *(BYTE*)pBufferOutput = byCurSetting; break; } // 固件Rest。自定义命令,与Port Rest是两码事。 case IOCTL_USB_FIRMWRAE_RESET: { KDBG(DPFLTR_INFO_LEVEL, "IOCTL_USB_FIRMWRAE_RESET"); if(InputBufferLength < 1 || pBufferInput == NULL) status = STATUS_INVALID_PARAMETER; else status = FirmwareReset(*(char*)pBufferInput); break; } // 重置USB总线端口 case IOCTL_USB_PORT_RESET: { KDBG(DPFLTR_INFO_LEVEL, "IOCTL_USB_PORT_RESET"); WdfUsbTargetDeviceResetPortSynchronously(m_hUsbDevice); break; } // 管道重置 case IOCTL_USB_PIPE_RESET: { UCHAR uchPipe; WDFUSBPIPE pipe = NULL; KDBG(DPFLTR_INFO_LEVEL, "IOCTL_USB_PIPE_RESET"); if(InputBufferLength < 1){ status = STATUS_INVALID_PARAMETER; break; } // 根据ID找到对应的Pipe uchPipe = *(UCHAR*)pBufferInput; pipe = WdfUsbInterfaceGetConfiguredPipe(m_hUsbInterface, uchPipe, NULL); if(pipe == NULL){ status = STATUS_INVALID_PARAMETER; break; } status = WdfUsbTargetPipeResetSynchronously(pipe, NULL, NULL); break; } // 中断管道,放弃管道当前正在进行的操作 case IOCTL_USB_PIPE_ABORT: { UCHAR uchPipe; WDFUSBPIPE pipe = NULL; KDBG(DPFLTR_INFO_LEVEL, "IOCTL_USB_PIPE_ABORT"); if(InputBufferLength < 1){ status = STATUS_INVALID_PARAMETER; break; } // 根据ID找到对应的Pipe uchPipe = *(UCHAR*)pBufferInput; pipe = WdfUsbInterfaceGetConfiguredPipe(m_hUsbInterface, uchPipe, NULL); if(pipe == NULL){ status = STATUS_INVALID_PARAMETER; break; } status = WdfUsbTargetPipeAbortSynchronously(pipe, NULL, NULL); break; } // 取得驱动错误信息,驱动总是把最后一次发现的错误保存在设备对象的环境块中。 // 这个逻辑虽然实现了,但目前的版本中,应用程序并没有利用这个接口。 case IOCTL_USB_GET_LAST_ERROR: { KDBG(DPFLTR_INFO_LEVEL, "IOCTL_USB_GET_LAST_ERROR"); if (OutputBufferLength >= sizeof(ULONG)) *((PULONG)pBufferOutput) = m_ulLastUSBErrorStatusValue; else status = STATUS_BUFFER_TOO_SMALL; ulRetLen = sizeof(ULONG); break; } // Clear feature命令 case IOCTL_USB_SET_CLEAR_FEATURE: { KDBG(DPFLTR_INFO_LEVEL, "IOCTL_USB_SET_CLEAR_FEATURE"); status = UsbSetOrClearFeature(Request); break; } // 为USB设备加载固件程序。带有偏移量参数,用这个分支;不带偏移量,可用下一个分支。 // 带偏移量的情况下,固件代码是一段一段地加载; // 不带偏移量的情况,固件代码作为一整块一次性被加载。 case IOCTL_FIRMWARE_UPLOAD_OFFSET: { void* pData = pBufferOutput; WORD offset = 0; KDBG(DPFLTR_INFO_LEVEL, "IOCTL_FIRMWARE_UPLOAD_OFFSET"); if(InputBufferLength < sizeof(WORD)){ status = STATUS_INVALID_PARAMETER; break; } offset = *(WORD*)pBufferInput; status = FirmwareUpload((PUCHAR)pData, OutputBufferLength, offset); break; } // 为USB设备加载固件程序。 case IOCTL_FIRMWARE_UPLOAD: { void* pData = pBufferOutput; KDBG(DPFLTR_INFO_LEVEL, "IOCTL_FIRMWARE_UPLOAD"); status = FirmwareUpload((PUCHAR)pData, InputBufferLength, 0); break; } // 读取开发板设备的RAM内容。RAM也就是内存。 // 每次从同一地址读取的内容可能不尽相同,开发板中固件程序在不断运行,RAM被用来储数据(包括临时数据)。 case IOCTL_FIRMWARE_READ_RAM: { KDBG(DPFLTR_INFO_LEVEL, "IOCTL_FIRMWARE_READ_RAM"); status = ReadRAM(Request, &ulRetLen);// inforVal中保存读取的长度 break; } // 其他的请求 default: { // 一律转发到SerialQueue中去。 WdfRequestForwardToIoQueue(Request, m_hIoCtlSerialQueue); // 命令转发之后,这里必须直接返回,千万不可调用WdfRequestComplete函数。 // 否则会导致一个Request被完成两次的错误。 return; } } // 完成请求 WdfRequestCompleteWithInformation(Request, status, ulRetLen); }
NTSTATUS AbortPipes( __in WDFDEVICE Device ) /*++ Routine Description sends an abort pipe request on all open pipes. Arguments: Device - Handle to a framework device Return Value: NT status value --*/ { UCHAR i; ULONG count; NTSTATUS status; PDEVICE_CONTEXT pDevContext; PAGED_CODE(); // // initialize variables // pDevContext = GetDeviceContext(Device); TraceEvents(TRACE_LEVEL_INFORMATION, DBG_IOCTL, "--> AbortPipes \n"); count = WdfUsbInterfaceGetNumConfiguredPipes(pDevContext->UsbInterface); for (i = 0; i < count; i++) { WDFUSBPIPE pipe; pipe = WdfUsbInterfaceGetConfiguredPipe( pDevContext->UsbInterface, i, //PipeIndex, NULL ); TraceEvents(TRACE_LEVEL_INFORMATION, DBG_IOCTL, "Aborting open pipe %d\n", i); status = WdfUsbTargetPipeAbortSynchronously(pipe, WDF_NO_HANDLE, // WDFREQUEST NULL);//PWDF_REQUEST_SEND_OPTIONS if (!NT_SUCCESS(status)) { TraceEvents(TRACE_LEVEL_ERROR, DBG_IOCTL, "WdfUsbTargetPipeAbortSynchronously failed %x\n", status); break; } } TraceEvents(TRACE_LEVEL_INFORMATION, DBG_IOCTL, "<-- AbortPipes \n"); return STATUS_SUCCESS; }
VOID CyGetActiveAltInterfaceConfig(__in PDEVICE_CONTEXT pDevContext) { WDFUSBPIPE UsbPipe; WDF_USB_PIPE_INFORMATION UsbPipeInfo; UCHAR ucIndex; UCHAR ucNumberConfiguredPipes; ucNumberConfiguredPipes = WdfUsbInterfaceGetNumConfiguredPipes(pDevContext->UsbInterfaceConfig.Types.SingleInterface.ConfiguredUsbInterface); pDevContext->ucActiveNumOfPipe = ucNumberConfiguredPipes; /* Update the number of cofigured pipe */ CyTraceEvents(TRACE_LEVEL_INFORMATION, DBG_PNP,"Number of configured pipe 0x%x\n", pDevContext->ucActiveNumOfPipe); pDevContext->ucActiveInterruptInPipe = 0; // Initialize for(ucIndex=0; ucIndex < ucNumberConfiguredPipes; ucIndex++) { WDF_USB_PIPE_INFORMATION_INIT(&UsbPipeInfo); UsbPipe = WdfUsbInterfaceGetConfiguredPipe( pDevContext->UsbInterfaceConfig.Types.SingleInterface.ConfiguredUsbInterface, ucIndex, &UsbPipeInfo ); WdfUsbTargetPipeSetNoMaximumPacketSizeCheck(UsbPipe); /* disable check for the multiple of maximum packet size for read/write buffer */ pDevContext->WdfUsbPipeArray[ucIndex] = UsbPipe; /* Store pipe handle */ /* display information */ if(WdfUsbPipeTypeInterrupt == UsbPipeInfo.PipeType && (WdfUsbTargetPipeIsInEndpoint(UsbPipe))) { //Update the interrupt IN endpoint information pDevContext->WdfUsbInterruptInPipeArray[pDevContext->ucActiveInterruptInPipe]=UsbPipe; pDevContext->ucActiveInterruptInPipe++; CyTraceEvents(TRACE_LEVEL_VERBOSE, DBG_PNP, "Interrupt Pipe is 0x%p\n", UsbPipe); CyTraceEvents(TRACE_LEVEL_VERBOSE, DBG_PNP, "Interrupt Pipe\n"); } if(WdfUsbPipeTypeBulk == UsbPipeInfo.PipeType) { CyTraceEvents(TRACE_LEVEL_VERBOSE, DBG_PNP, "Bulk Pipe is 0x%p\n", UsbPipe); // && WdfUsbTargetPipeIsInEndpoint(pipe CyTraceEvents(TRACE_LEVEL_VERBOSE, DBG_PNP, "Bulk Pipe\n"); } if(WdfUsbPipeTypeIsochronous == UsbPipeInfo.PipeType && WdfUsbTargetPipeIsOutEndpoint(UsbPipe)) { CyTraceEvents(TRACE_LEVEL_VERBOSE, DBG_PNP, "Isochronous Pipe is 0x%p\n", UsbPipe); CyTraceEvents(TRACE_LEVEL_VERBOSE, DBG_PNP, "Isochronous Pipe\n"); } CyTraceEvents(TRACE_LEVEL_VERBOSE, DBG_PNP, " MaximumPacketSize :%x\n", UsbPipeInfo.MaximumPacketSize); CyTraceEvents(TRACE_LEVEL_VERBOSE, DBG_PNP, " EndpointAddress :%x\n", UsbPipeInfo.EndpointAddress); CyTraceEvents(TRACE_LEVEL_VERBOSE, DBG_PNP, " Interval :%x\n", UsbPipeInfo.Interval); CyTraceEvents(TRACE_LEVEL_VERBOSE, DBG_PNP, " SettingIndex :%x\n", UsbPipeInfo.SettingIndex); } }