nrf52840 pro mini Serial error

Wireless & IoT Bluetooth
1

Hello,

I truly need your support as I hit a brick wall following your tutorial and I have no idea how to move forward…

I’m following the tutorial for [nRF52840 Development with Arduino and CircuitPython, I updated the boards and libraries (see screenshots) however when I try the Arduino Examples the code refuses to compile and I get the following error:

C:\Users\Antec\AppData\Local\Arduino15\packages\adafruit\hardware\nrf52\0.11.1\libraries\Bluefruit52Lib\examples\Peripheral\blinky_ota\blinky_ota.ino: In function 'void setup()':

blinky_ota:22:3: error: 'Serial' was not declared in this scope

(full compilation log is attached to this post and the updated boards file)

The following is the Arduino IDE settings:

https://dl.dropbox.com/s/07fqvcttps23k2a/1.png

the board folder settings:

https://dl.dropbox.com/s/qo1ba11knyos2lv/2.png

Can you please help me understand what is it I’m missing here?

Many thanks in advance,

Ram](nRF52840 Development with Arduino and CircuitPython - SparkFun Learn)

boards.txt (9.82 KB)

2

Hello,

Same problem here.

Tried several things, including new installation of the Arduino IDE. Two different computers. Nothing

3

Hi everyone,

It looks like this issue is related to the latest version of Adafruit nRF52x library and our custom board definition. We have identified the issue and have a fix that is ready to go. We will update the [GitHub Repository and the [Arduino and CircuitPython Software Development Guide as soon as possible. That should be completed today or tomorrow (7/18).

You will need to update the boards.txt file and reinstall the SparkFun Pro nRF52840 Board Definitions once the fix has been pushed. You will be able to tell when the fix is live by checking the latest commit on the GitHub repository as the last one was from 2018.](https://learn.sparkfun.com/tutorials/nrf52840-development-with-arduino-and-circuitpython#introduction)](GitHub - sparkfun/nRF52840_Breakout_MDBT50Q: Breakout board for the MDBT50Q nRF52840 module)

4

Hi,

I tested the new software and it works fine for me.

Thank you