Arduino Nano 33 IOT 'west flash' failure
Sunanda Roy <sroy9@...>
While trying to execute a simple test program (samples/hello_world) on Arduino Nano 33 IOT (target) using Zephyr RTOS. I followed all installation steps and when I run the 'west flash' command in bootloader mode, I got this error: No device found on /dev/ttyACM0 (serial port).
After some online study, I find that I need to change permissions of serial port to 666 before every flash. Now when I follow the steps at (https://docs.zephyrproject.org/latest/boards/arm/arduino_nano_33_iot/doc/index.html), I get the below error:
-- west flash: using runner bossac
SAM-BA operation failed
On the contrary, when I do NOT open the minicom terminal (in a separate window), I am able to flash successfully.
This allows me to successfully flash and verify sample programs which do not require any serial output (ex. samples/basic/blinky). But I am not able to see any output for sample programs like (samples/drivers/crypto) after a successful flash.
Please provide your suggestions to see the output of these sample programs on my desktop machine running Ubuntu 20.04.2 LTS.
I have been seeing the same thing with the nano-33 Sense using windows. I had assumed it must be my set-up but this would indicate that there is an issue with serial output on the Nano boards.
Not sure where to start.