Xiao rp2040 with Arduino IDE 1.8.19 upload simple sketch failed

[davekw7x]

Here are some notes about how I got things to work. If any Seeed developers can read this, maybe they can make a fix. It’s really simple once you know what the problem is.

XIAO RP2040: Board Package 2.7.2: I2C and SPI can actually work

Here’s what I found after some “poking around.” 1. If you have never used the XIAO RP2040 with your Arduino system and you use the Hardware Manager to load the Seeed XIAO RP2040 package 2.7.2 (the latest package): It compiles OK, but chokes when you try to upload to the device. (Awww $hit!) 2. If you use the Arduino Boards Manager to remove the 2.7.2 package and install the 1.12.0 version: It compiles OK and you can upload the file to the device. (Attaboy!) However… 3. With version 1.1…

Bottom line:

1. Use Boards Manager to remove XIAO RP2040 package 2.7.2
2. Use Boards Manager to install package 1.12.0
3. Use Boards Manager to upgrade the package to 2.7.2

Note that these steps fix the missing tools blunder that my other post refers to, but does not fix the upper-case blunder that Linux users like @rbehm must fix. (Rather than rename the file, I created a symbolic link.)

Regards,

Dave

Footnote: When you are in Boot mode, you can drag and drop a MicroPython or CircuitPython script to the board, but Arduino can not talk to it since there is no serial port.

With the Arduino tools installed as I showed above, you get a serial port to use with Arduino when you do a non-boot reset. After the very first upload from Arduino the serial port number may (or, maybe, not) change to a new value, which you will use for all subsequent Arduino activity.