RNBO Daisy example builds and flashes correctly, but produces no output

Hi,

I’m trying to get the rnbo.example.daisy project working, following the repository instructions here:

https://github.com/Cycling74/rnbo.example.daisy?tab=readme-ov-file

Here are the exact steps I followed:

git clone https://github.com/Cycling74/rnbo.example.daisy.git
cd rnbo.example.daisy
git submodule update --init --recursive

cd 3rdparty/libDaisy
make

Then, from RNBO, I exported the patch into the export folder, using:

• Minimal export

• export name: rnbo_source

Then I went back to the root of rnbo.example.daisy and ran:

make clean
make
dfu-util -a 0 -s 0x08000000:leave -D build/RNBO.bin

So far, everything appears to complete correctly. The project builds, the binary is flashed, and there are no obvious errors in the process.

However, the code produces no output at all.

We have carefully followed the steps, including the export settings, but still get nothing.

Has anyone run into this before?
Are there specific things we should check next?

For example:

• something wrong with the RNBO export itself

• required patch structure or mandatory objects

• audio callback / hardware initialization issue

• incorrect assumptions about the Daisy target or audio routing

Any advice would be appreciated.

We read about a json file while using oopsy... that would link parameter with gpio.
But we didn't have any success with oopsy.

But would it be this same json file in our process outside of oopsy ?

Some users/students here are running away using Plug Data as it can compile to Daisy.