The microcontroller type is wrong: it's not a ATSAMD51J19A but a G19A. The J19A is only in the Metro M4 and Feather M4, according to Adafruit's board.txt. The hardware is thus slightly different, having for example a different number of TCs. I'm not entirely sure about the debug section since I'm not using any of those debug devices, but I made what seemed to be the corresponding change. Feel free to correct me if I'm wrong.
ivankravets
commented
5 years ago
The microcontroller type is wrong: it's not a ATSAMD51J19A but a G19A. The J19A is only in the Metro M4 and Feather M4, according to Adafruit's
board.txt. The hardware is thus slightly different, having for example a different number of TCs. I'm not entirely sure about the debug section since I'm not using any of those debug devices, but I made what seemed to be the corresponding change. Feel free to correct me if I'm wrong.