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adafruit / Adafruit_DAP

port of free-DAP to standalone arduino
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Flash MKR Bootloader for ATSAMD21G17A. #38

Closed HuyNguyen-01 closed 2 months ago

HuyNguyen-01 commented 3 months ago

Hi. I have designed a custom board based on the Arduino MKR 1500 board. But I used the ATSAMD21G17A chip instead of the original ATSAMD21G18A. This causes me to not be able to load the bootloader. Node: I added "{0x10010306, (char *)"SAM D21G17A (Rev E)", 128*1024, 4096}," to the "Adafruit_DAP_SAM.cpp" file.

This helped me get the bootloader.

But when I plug the USB cable into my custom board, I don't see any USB PORT appearing. I think the Flash is different between the two chips leading to this error. (128Kb for ATSAMD21G17A; 256Kb for ATSAMD21G18A)

Has anyone had any success or have any ideas?

hathach commented 2 months ago

sorry, we don't have the hardware to test with. If you figure it out, feel free to make an PR for the fix.