Hello i found something that looks like the same problem I'm having in another post here. It looks like he has created his own board and bootloader for this. I have tired it and came up with this error.
I have put the folder in the Documents/Arduino Folder right with the libraries and sketches. Then i open arduino and saw it in the Boards area. So i selected it and upload the blink sketch and came up with this error.
Sketch uses 10792 bytes (65%) of program storage space. Maximum is 16384 bytes.
Global variables use 1984 bytes of dynamic memory.
Open On-Chip Debugger 0.10.0+dev-gf0767a31 (2018-06-11-13:36)
Licensed under GNU GPL v2
For bug reports, read
http://openocd.org/doc/doxygen/bugs.html
debug_level: 0
embedded:startup.tcl:60: Error: Can't find C:\Users\jJc\Documents\Arduino\hardware\my_boards\samd/variants/samd21e15/{build.openocdscript}
in procedure 'script'
at file "embedded:startup.tcl", line 60
the selected serial port at file "embedded:startup.tcl", line 60
does not exist or your board is not connected
I'm not sure what to do now? This is beyond my skill level now.
Edit: I'm at this point I'm unsure now what to do. Should i keep with this post or ask for help in the other post where that guy is having the same problem as me?
Joseph