SAMD51J20 bootloader

[PaulZC]

Hi @potato45 ,

Please see these posts:

Problems flashing bootloader to SAMD51 using Segger J-Link EDU and Microchip studio

“Bits 11:8 – BOOTPROT[3:0] Boot Loader Protection Size This bitfield is loaded from the NVM User page during the device startup (See the Memories chapter). Defines the size of the BOOTPROT region which is protected against write or erase or Chip-Erase operations. This size is given by the following formula (15-BOOTPROT)*8KB.” So, if I’m reading this right, 0 maximises the size of the write- and erase-protected region? I suggest setting it to 15, then erase, then write, then set it back to 0. Best, Paul

SAMD51 Thing Plus Processor Fuse Settings

I was wondering if anyone has the fuse settings used for the SAMD51J20A for Microchip Studio for the SAMD51 thing plus? I bought the SAMD51 thing plus dev. board (actually 3 of them at this point haha) to help in the development of a custom flight computer I am working on for a college engineering team, but have had a few problems with our board. One of them was the processor would consistently reset every 15s, and I was able to fix that by disabling the wdt_en fuse bits, but I still have some other weird problems that show up once in awhile. If it would be possible for someone to just copy the fuse settings from one and send them to me that would be amazing, I have had some trouble trying to solder wires onto one to connect it to the Atmel ICE debugger I have. Best, Barrett Twining

I hope this helps,
Paul