0

First of all: my board used to work fine.

Now my Nano 33 IoT turns ON (green light) when connected to USB on Mac but:

  1. doesn't enter in upload mode after pressing twice on board button.
  2. doesn't shows up in any serial port: nor /dev/cu.usbmodem14*01, neither /dev/tty.usbmodem14*01

For reasons too long to explain, I want to connect via ANY pins to the SAMD21 and force the burning of a new bootloader.

Is that possible in any way? Any idea is welcome!

Tx

0
1

Use the SWD interface and a programmer to burn the bootloader to SAMD.

enter image description here

source of the picture https://medium.com/@manuel.bl/arduino-in-circuit-debugging-with-platformio-9f699da57ddc

I had luck with Adafruit DAP library using an Arduino M0 to burn a bootloader to MKR Zero.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.