I really need your help for guiding me to learn how to write a bootloader for a SAM D20 (Atmel Cortex M0+) MCU.:roll: I have a SAM D20 Xplained Pro evaluation board in hand. However I am surprised that there is not much tutorial/user guide on the web for teaching to write a bootloader for the SAM D MCU.:shock: Often I can only find the "SAM-BA" guide which is a PC software.
Where should I start?:?:
Thanks a lot! :D