Kévin Redon d70836f965 DFU: restart bootloader when USB conf failed ...

when starting the DFU bootloader, but USB configuration (e.g.
enumeration) failed, the MCU restarted in the main application.
this occured after a DFU detach and were the USB host missed the
USB reset.
now after MCU reset, the bootloader is started again, since this
is what was requested to begin with.
the bootloader will always restart in the bootloader until USB
enumeration succeeded.
this boot loop can be stopped by unplugging/removing power from
the device.

Change-Id: I4062a7d8a7934af2119c169759b614dc45990651

2019-12-03 15:51:52 +00:00

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