RxUsbQueryDeviceReport: Difference between revisions
Created page with "==Description== Obtains the Compound Descriptor of a specific USB device. ==Syntax== <pre> rc = RxUsbQueryDeviceReport(Handle,Report) </pre> ==Parameters== ; Handle : the D..." |
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Revision as of 03:27, 11 January 2017
Description
Obtains the Compound Descriptor of a specific USB device.
Syntax
rc = RxUsbQueryDeviceReport(Handle,Report)
Parameters
- Handle
- the Device Handle received from the previous RxUsbOpen.
- Report
- receives the Compound Descriptor as hexadecimal string. The Compound Descriptor is the concatenation of Device Descriptor and Configuration Descriptor.
Return Code
Errors
Remarks
Example Code
/* add RxUsbQueryDeviceReport */
rc = RxFuncAdd('RxUsbQueryDeviceReport','usbcalls','RxUsbQueryDeviceReport')
say '+RxUsbQueryDeviceReport(),RC=0x'd2x(rc)
/* invoke RxUsbQueryDeviceReport */
drop Report /* receives device report */
rc = RxUsbQueryDeviceReport(Handle,Report)
say '*RxUsbQueryDeviceReport(),RC=0x'd2x(rc)
/* drop RxUsbQueryDeviceReport */
rc = RxFuncDrop('RxUsbQueryDeviceReport')
say '-RxUsbQueryDeviceReport(),RC=0x'd2x(rc)