RxUsbInterfaceGetAltSetting

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

Syntax
rc = RxUsbInterfaceGetAltSetting(Handle,Interface,AltSetting)

Parameters

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


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


 * AltSetting : the name of the variable to receive the Alternate Setting.

Return Code
0x0000 - NO_ERROR

Errors
0x0000 - NO_ERROR 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
/* add RxUsbInterfaceGetAltSetting */ rc = RxFuncAdd('RxUsbInterfaceGetAltSetting','usbcalls','RxUsbInterfaceGetAltSetting') say '+RxUsbInterfaceGetAltSetting,RC=0x'd2x(rc)

/* invoke RxUsbInterfaceGetAltSetting */ Interface=1 /* second interface number */ drop AltSetting /* receives alternate setting */ rc = RxUsbInterfaceGetAltSetting(Handle,Interface,AltSetting) say '*RxUsbInterfaceGetAltSetting,RC=0x'd2x(rc)

/* drop RxUsbInterfaceGetAltSetting */ rc = RxFuncDrop('RxUsbInterfaceGetAltSetting') say '-RxUsbInterfaceGetAltSetting,RC=0x'd2x(rc)

Related Functions

 * RxUsbInterfaceSetAltSetting
 * RxUsbInterfaceGetStatus
 * RxUsbInterfaceClearFeature
 * RxUsbInterfaceSetFeature
 * RxUsbCtrlMessage
 * RxUsbOpen