I'm using SAMD21G18A 32bit MCU in a custom board I designed. I programmed it using Atmel ICE, but the code does not execute. Arduino M0 board has the same MCU. Finally, I tried to change the fuse settings of custom board mcu from Arduino M0. Fuse values can be edited but there's an error message when trying to program the new fuse values " value has been modified but not programmed".
Please share your ideas to get the custom board work.