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BGS5 USB cold-plug vs hot-plug | Thales IoT Developer Community

September 13, 2016 - 3:05pm, 2169 views

When starting a BGS5 by providing BATT+ and 600ms later an IGNITION pulse while the USB connection to a PC is present (cold-plug), sometimes the BGS5 doesn't enumerate in Windows 7 (unknown device detected and no modem device is in device manager).

If in this situation, we remove the USB connection and restore the USB connection (so hot-plug), the BGS5 always enumerates in Windows 7.

Is there a difference in the USB stack of the BGS5 between cold and hot-plug?