This bootloader was creating during a class assignment. The code is experimental and highly untested, but it should work.
Upon boot, the bootloader expects a 'p' via the UART. When this char is not sent after a small amount of time, the boot process continues. When the device is in flash mode, the system expects a Intel HEX-File with the flash contents. When the file was transmitted, the device should boot normally.
Copyright 2019 Stephan Brunner
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