RxUsbDeviceSetDescriptor: Difference between revisions
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; Descriptor : the Device Descriptor appropriate for the device. | ; Descriptor : the Device Descriptor appropriate for the device. | ||
==Return Code== | ==Return Code== | ||
<pre> | |||
0x0000 - NO_ERROR | |||
</pre> | |||
===Errors=== | ===Errors=== | ||
<pre> | |||
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 | |||
</pre> | |||
==Remarks== | ==Remarks== | ||
'''Warning:''' Do NOT use this function unless you know your USB device supports it. | '''Warning:''' Do NOT use this function unless you know your USB device supports it. | ||
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rc = RxFuncDrop('RxUsbDeviceSetDescriptor') | rc = RxFuncDrop('RxUsbDeviceSetDescriptor') | ||
say '-RxUsbDeviceSetDescriptor(),RC=0x'd2x(rc) | say '-RxUsbDeviceSetDescriptor(),RC=0x'd2x(rc) | ||
</pre> | </pre> | ||
Revision as of 18:59, 22 January 2017
Description
Warning: Do NOT use this function unless you know your USB device supports it.
Executes the Standard Device Request that updates the Device Descriptor.
Syntax
rc = RxUsbDeviceSetDescriptor(Handle,Length,Descriptor)
Parameters
- Handle
- the Device Handle received from the previous RxUsbOpen.
- Length
- the desired number of bytes or 0 for the whole Device Descriptor.
- Descriptor
- the Device Descriptor appropriate for the device.
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
Warning: Do NOT use this function unless you know your USB device supports it.
Example Code
/* add RxUsbDeviceSetDescriptor */
rc = RxFuncAdd('RxUsbDeviceSetDescriptor','usbcalls','RxUsbDeviceSetDescriptor')
say '+RxUsbDeviceSetDescriptor(),RC=0x'd2x(rc)
/* invoke RxUsbDeviceSetDescriptor */
Length=18 /* to replace whole descriptor */
Descriptor=x2c(1201100100000040450C2D60010100010001)
rc = RxUsbDeviceSetDescriptor(Handle,Length,Descriptor)
say '*RxUsbDeviceSetDescriptor(),RC=0x'd2x(rc)
/* drop RxUsbDeviceSetDescriptor */
rc = RxFuncDrop('RxUsbDeviceSetDescriptor')
say '-RxUsbDeviceSetDescriptor(),RC=0x'd2x(rc)