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Bootloader and Application use both USB as serial port: how to deinit?

Question asked by Chris_31543 on Oct 16, 2015
Latest reply on Oct 22, 2015 by 68516

I have a bootloader communicating over USB and the application which is loaded and started uses the same USB port. When I use the bootloader and start the application the USB port isn't working inside the application. When I use the application without the bootloader flashed with SWD the USB is working.

I have no special de-init function for the USB port. How do I have to de-init it, before starting the application that it can use the same port?