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USB voltage always zero

Von Superp
in General Discussion

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Geschrieben

Hello,

For a Master Brick 3.1 (HW version 3.0.0, FW 2.5.1, Ruby bindings 2.1.29), it seems #get_usb_voltage always returns 0 (zero).

The documentation says "Returns the USB voltage. Does not work with hardware version 2.1".

I am asking because I have a stack powered via USB by a power pack.

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    • Geschrieben

    Hello,

    it's right it is not working since version 2.1. Before that we had a analog measurement of the USB voltage to detect if USB is connected. With version 2.1 we have introduced a more stable solution which unfortunately makes it impossible to measure the voltage.

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    • Autor

    Well no, I would not say it is fixed, it's documented. This is costing me a bit.

     

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