UsbInterfaceGetAltSetting

Description
Executes the Standard Device Request that obtains the Alternate Setting for an interface.

Syntax
ulrc = UsbInterfaceGetAltSetting(Handle,ucInterface,pucAltSetting)

Parameters

 * Handle : the Device Handle received from the previous UsbOpen.


 * ucInterface : the specific Interface Number appropriate for the USB device.


 * pucAltSetting : the address of the variable to receive the Alternate Setting.

Return Code
0x0000 - NO_ERROR

Errors
0x0006 - ERROR_INVALID_HANDLE 0x0008 - ERROR_NOT_ENOUGH_MEMORY 0x0057 - ERROR_INVALID_PARAMETER 0x005F - ERROR_INTERRUPT 0x0122 - ERROR_TOO_MANY_HANDLES 0x0280 - ERROR_TIMEOUT 0x1B58 - USB_NOT_INIT 0x4000 - USB_IORB_REQUEST 0x80XX - USB_IORB_FAILED 0xFF0D - ERROR_INVALID_DATA 0xFF13 - ERROR_I24_INVALID_PARAMETER 0xFF13 - USB_IDC_PARMERR 0xFF18 - USB_IDC_ADDRINV 0xFF37 - ERROR_DEV_NOT_EXIST 0xFF5D - EROR_NO_ITEMS 0xFFA7 - ERROR_LOCK_FAILED

Example Code
//Code Snippet - UsbInterfaceGetAltSetting { APIRET ulrc; PUCHAR pucAltSetting; UCHAR ucAltSetting; UCHAR ucInterface = 1;

pucAltSetting = &ucAltSetting; ulrc = UsbInterfaceGetAltSetting(Handle,ucInterface,pucAltSetting); printf("\nUsbInterfaceGetAltSetting - ulrc: 0x%04X (%hu)",ulrc,ulrc); if (!ulrc) //success {   printf(" - AltSetting: %hu",ucAltSetting); } }

Related Functions

 * UsbInterfaceSetAltSetting
 * UsbInterfaceGetStatus
 * UsbInterfaceClearFeature
 * UsbInterfaceSetFeature
 * UsbCtrlMessage
 * UsbOpen