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TOBY-L2 and MPCI-L2 series - System Integration Manual
UBX-13004618 - R28
System description
Page 41 of 164
As each USB profile of TOBY-L2 and MPCI-L2 modules identifies itself by its specific VID and PID
combination included in the USB device descriptor according to the USB 2.0 specifications
, the VID
and PID combination changes as following by switching the active USB profile configuration to the set
of functions described above (3 CDC-ACM for AT commands and data, and 1 CDC-ACM for
diagnostic):
VID = 0x1546
PID = 0x1141
Alternatively, as another example, the USB profile configuration can be changed by means of the
AT+UUSBCONF command switching to a USB profile configuration which provides the following
functions:
1 CDC-ECM for Ethernet-over-USB
3 CDC-ACM for AT commands and data
In case of this USB profile with the set of functions described above (1 CDC-ECM for Ethernet-over-
USB, and 3 CDC-ACM for AT commands and data), the VID and PID are the following:
VID = 0x1546
PID = 0x1143
The switch of the active USB profile selected by the AT+UUSBCONF command is not performed
immediately. The settings are saved in the non-volatile memory of the module at the power off,
triggered by means of the AT+CPWROFF command, and the new configuration is effective at the
subsequent reboot of the module.
If the USB is connected to the host before the module is switched on, or if the module is reset
(rebooted) with the USB connected to the host, the VID and PID are automatically updated during the
boot of the module. First, VID and PID are the following:
VID = 0x1546
PID = 0x1140
This VID and PID combination identifies a USB profile where no USB function described above is
available: AT commands must not be sent to the module over the USB profile identified by this VID
and PID combination.
Then, after a time period (roughly 20 s, depending on the host / device enumeration timings), the VID
and PID are updated to the ones related to the USB profile selected by the AT+UUSBCONF command.
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For more details regarding the TOBY-L2 and MPCI-L2 series modules USB configurations and
capabilities, see the u-blox AT Commands Manual
, +UUSBCONF AT command.
1.9.1.2
USB in Windows
USB drivers are provided for Windows operating system platforms and should be properly installed /
enabled by following the step-by-step instructions available in the EVK-L2x User Guide
Windows Embedded OS USB Driver Installation Application Note
USB drivers are available for the following operating system platforms:
Windows Vista
Windows 7
Windows 8
Windows 8.1
Windows 10
Windows Embedded CE 6.0
Windows Embedded Compact 7
Windows Embedded Compact 2013