RxUsbInterfaceGetStatus
Description
Executes the Standard Device Request that obtains the status of an interface.
Syntax
rc = RxUsbInterfaceGetStatus(Handle,Interface,Status)
Parameters
- Handle
- the Device Handle received from the previous RxUsbOpen.
- Interface
- the specific Interface Number appropriate for the USB device.
- Status
- the name of the variable to receive the Interface Status.
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
Remarks
Example Code
/* add RxUsbInterfaceGetStatus */
rc = RxFuncAdd('RxUsbInterfaceGetStatus','usbcalls','RxUsbInterfaceGetStatus')
say '+RxUsbInterfaceGetStatus(),RC=0x'd2x(rc)
/* invoke RxUsbInterfaceGetStatus */
Interface=1 /* second interface number */
drop Status /* receives interface status */
rc = RxUsbInterfaceGetStatus(Handle,Interface,Status)
say '*RxUsbInterfaceGetStatus(),RC=0x'd2x(rc)
/* drop RxUsbInterfaceGetStatus */
rc = RxFuncDrop('RxUsbInterfaceGetStatus')
say '-RxUsbInterfaceGetStatus(),RC=0x'd2x(rc)