Error message: PICO Compiler Toolchain is not installed.

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HansJuergenHalder
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Error message: PICO Compiler Toolchain is not installed.

Post by HansJuergenHalder »

Hello,

When I try to create a new Flowcode program for the RP 2040, I get the following error message:
PICO Compiler Toolchain is not installed.

1. I can work with pico-sdk in VS Code.
2. Flowcode Toolchain is installed.
3. The folder for pico-sdk is entered in the global settings.
Last edited by HansJuergenHalder on Mon Sep 15, 2025 11:01 am, edited 1 time in total.

chipfryer27
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Re: PICO Compiler Toolchain is not installed.

Post by chipfryer27 »

Hi

This link details installation of toolchains

https://www.flowcode.co.uk/wiki/index.p ... Toolchains

At the bottom you will see further links to install ESP and Pico toolchains.

It is very important that you follow the guides exactly as documented. If you change directories or install different versions from the documentation then you will most likely face issues.

Once installed, remember to set your Com Port under Project Options too, so FC knows which PC port you are using.

Hope this helps.

medelec35
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Re: PICO Compiler Toolchain is not installed.

Post by medelec35 »

Hello.
The Toolchain is not installed is caused by not adding the correct path within File > Global Options ... > Location tab
Check the path for PICO is correct.
Martin

HansJuergenHalder
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Re: PICO Compiler Toolchain is not installed.

Post by HansJuergenHalder »

Hello,

I installed the missing tools according to these instructions https://www.flowcode.co.uk/wiki/index.p ... Toolchains

The path was automatically added by Flowcode

RPI Toolchain is installed under ...\pico_sdk

HansJuergenHalder
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Re: PICO Compiler Toolchain is not installed.

Post by HansJuergenHalder »

Additional information

When starting Flowcode, I receive the additional error message
“Definition file Free Target ... Raspberry.Pi_Pico.FCD” is missing.

medelec35
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Re: Error message: PICO Compiler Toolchain is not installed.

Post by medelec35 »

Can you post your fcfx and msg.txt project files and I will investigate the issue you have.
Martin

HansJuergenHalder
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Re: Error message: PICO Compiler Toolchain is not installed.

Post by HansJuergenHalder »

Hello,

Please find the files attached.
Attachments
Flowcode1Pico.msg.txt
(1.43 KiB) Downloaded 4 times
Flowcode1Pico.fcfx
(7.44 KiB) Downloaded 1 time

chipfryer27
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Re: Error message: PICO Compiler Toolchain is not installed.

Post by chipfryer27 »

Hi

It compiles OK for me.

I suspect something wrong with your installation.

I did notice though that your chart won't actually do much if it were to run.

You:-

Output 0 on GPO0
Wait 1mS
Output 0 on GPO0
Wait 1mS
End

Whilst the above would run, it wouldn't actually do much that you could detect.

Regards

chipfryer27
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Re: Error message: PICO Compiler Toolchain is not installed.

Post by chipfryer27 »

Hi

Matrix would be better able to assist with your error but perhaps look in

C:\ProgramData\MatrixTSL\FlowcodeV10\FCD\PICO to see if you have the folder and files?

Regards

LeighM
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Re: Error message: PICO Compiler Toolchain is not installed.

Post by LeighM »

Your attached msg.txt file seems to end abruptly.
Have you got generic file system issues on your PC?
Full hard drive?
As chipfryer27, please check files exist.

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