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Showing results for tags 'usb disconnect'.
Hello, Is there any way to figure out if a Tiva-C board is being powered with the usb connector, or from an external power supply connected to vbus? This is the problem I am facing: I am poweing Tiva-C board from the vbus connector, on a robot. At times we need to connect the usb cable for programming. Since VBUS is connected to external battery, it will "some times" (most of the time) - crash the computer. So I am using a pololu switching regulator, with a shutdown control pin. What I would like to do is, the device to figure out if usb power is being used, and shutdown the ext