Lucent Technologies USS-720 manual Ioctlgetcapabilities

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Preliminary User Guide, Rev. 2	USS-720
February 1999	USB Device Driver

4 I/O Control Codes (continued)

4.10 IOCTL_GET_CAPABILITIES

IOCTL_GET_CAPABILITIES returns a variable buffer length containing the device capabilities string. This is an IEEE 1284 compatible string. Details regarding parameters and error codes follow.

4.10.1 Parameters

lpInBuffer—Points to an input buffer. Not used with this operation. Set to NULL.

nInBufferSize—Speciﬁes the size (in bytes) of the buffer pointed to by lpInBuffer. Not used with this operation. Set to zero.

lpOutBuffer—Points to an output buffer that will receive an IEEE 1284 Device ID string.

nOutBufferSize—Speciﬁes the size (in bytes) of the buffer pointed to by lpOutBuffer. Specify zero to return only the length of the Device ID string in lpBytesReturned.

lpBytesReturned—Points to a DWORD that receives the actual size (in bytes) of the data stored into lpOutBuffer or returns the length of the Device ID string if nOutBufferSize is zero.

4.10.2 Notes

None.

4.10.3 Error Codes

ERROR_NOT_ENOUGH_BUFFER—lpOutBuffer was not large enough to receive the Device ID string (see USS- 720 USB-to-IEEE 1284 Bridge Preliminary Data Sheet, “Printer Class-Speciﬁc Requests”).

STATUS_INSUFFICIENT_RESOURCES—Not enough memory to perform the request on this device instance.

Lucent Technologies Inc.

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Contents Information Manual, Rev September IntroductionTable of Contents September USB-to-IEEE Bridge Information Manual, Rev Evaluation Kit for USS-720IOCTLSET1284REGISTER USS-720 USB Device Driver Preliminary User GuideIOCTL1284 Terminate USS-720 USB Port Monitor Application Note Evaluation Kit Contents \SAMPLES Hardware RequirementsGetting Started Instructions OSR2.1 Cable Installation InstructionsWindows 98 Cable Installation Instructions Software UpdatesPort Creation USB Driver and Port MonitorPlug and Play Eeprom Lucent Technologies Inc In-System Design, Inc Lucent Technologies Microelectronics GroupUSB Applications Support September USS-720 Driver Software Object Code License Agreement Evaluation Kit SoftwareFebruary IntroductionLicensed Software USS-720 Software Use Agreement FebruaryFurnishing of Licensed Software OwnershipFebruary Software Use Agreement USS-720Agreement Prevails Warranty and IndemnityNothing Construed 04 ConﬁdentialityNonassignability PublicityAddresses IntegrationDisputes Applicable LawDocumentation USS720.SYSUSS720.INF USS-720 Software Use Agreement February Application Note, Rev February Software ComponentsPrinter Enumeration Customer-Deﬁned DataPlug and Play Operation PnP Installation Process Power ManagementOperating Systems Supported USB Hardware Types SupportedPrint Types Supported Printer Types SupportedDescription FeaturesPreliminary Data Sheet, Rev September Table of Contents USB-to-IEEE Preliminary Data Sheet, Rev USS-720Pin Information Parallel Port nSelectIn Signal Active-Low Parallel Port nAutoFd Signal Active-LowParallel Port nInit Signal Active-Low Parallel Port nAck Signal Active-LowUSB Port OverviewDevice Descriptor, Conﬁgurations, and Inter- faces Descriptor LocationsDevice Descriptor Offset Field Size Value Description USB-to- Ieee 1284 Bridge SeptemberOnboard Device Descriptor Conﬁguration Descriptor USB-to- IeeeBulk Out Endpoint Descriptor, I0A0E1 Interface DescriptorsBulk In Endpoint Descriptor, I0A1E2 September USB-to-IEEE1284 BridgeBulk Out Endpoint Descriptor, I0A1E1 Interrupt Endpoint Descriptor, I0A2E3 Bulk Out Endpoint Descriptor, I0A2E1Bulk In Endpoint Descriptor, I0A2E2 Standard Requests PipesRequests Get Port Status Data Bit Description Printer Class-Speciﬁc RequestsSET1284REGISTER Vendor-Speciﬁc RequestsGET1284REGISTER Register-Based Operation Ieee 1284 PortGET1284REGISTER Data Byte Register Data RegistersInterrupt Pipe Read Data Byte Register DataParallel Port nFault Signal Reserved Status Register Address Bit SymbolDefault Bit Symbol Bit Description Access Default Bit Symbol Bit Description Control Register Address Bit SymbolParallel Port nInit Signal USB-to-IEEE1284 BridgeUSS-720Instant USB ECP Command Register Address Bit Symbol Access Mode20 Description Extended Control Register Address Bit SymbolUSS-720 Control Register Address Bit Symbol USS-720 Setup Register Address Bit Symbol Interrupts External Crystal Connection External Circuitry RequirementsHigh Drive Mode Filter Bypass ModeSelf-Powered Mode Absolute Maximum Ratings Parameter Symbol Min UnitParameter Symbol Test Conditions Min Typ Max Unit Electrical CharacteristicsCapacitance Values Parameter Unit Clklo ClkhiOutput Delay Timing Parameter Min Max Unit Timing CharacteristicsSetup and Hold Input Timing Parameter Ordering Information Outline DiagramPin Mqfp Device Code Package ComcodeApplication Note February Description Port ParallelBridging USB to Typical Circuit Showing USSLucent Technologies Inc Preliminary User Guide, Rev February Signal DirectionsIOCTL1284 Setmode O File Functions InitializationPreliminary User Guide, Rev USS-720 February USB Device DriverCreateFile ReadFile Error CodesWriteFile DeviceIoControl CloseHandle Control Code Description O Control CodesParameters IOCTL1284 EcpfwdtorevIOCTL1284ECPREVTOFWD IOCTL1284 Ecpsetchannel IOCTL1284 Setmode Register Mode DescriptionIOCTL1284 Terminate Value Description IoctlabortpipeBulkoutpipe BulkinpipeIoctlcancelpiperequest IOCTLGET1284REGISTER ALTINTERFACE0 IoctlgetaltsettingALTINTERFACE1 ALTINTERFACE2Ioctlgetcapabilities Ioctlgetconfigurationdescriptor Ioctlgetdevicedescriptor Ioctlgetdeviceinstances Ioctlgetinterface Bit Meaning IoctlgetportstatusCommand Description IOCTLISSUEUSS720COMMANDByte Description IoctlreadinterruptpipeIoctlresetpipe IOCTLSET1284REGISTER Ioctlsetaltsetting Ioctlsoftreset Deviceinstanceheader O Control Data StructuresDeviceinstance Data StructureREGISTER1284, *PREGISTER1284 REGISTER1284ADVREGISTER1284, *PADVREGISTER1284 ADVREGISTER1284Lucent Technologies Inc USS-720 USB Port Monitor Printer Cable with Instant USB USS-720 Application Note USB Port Monitor FebruaryW98USS720EvalKit2402.zip to download the installation ﬁles Software Installation InstructionsApplication Note June Click on Enter LibrarySeptember MN99-052CMPR-1 Replaces MN97-061CMPR-04