WMXZ
Senior Member

exactly. the loop() is called continuously from (hidden) main. Every direct call to set the volume can generate a glitch. So, put all one-time settings into setup(). If you need to modify volume during replay, you...

Don't touch continuously the volume within the loop, it only create noise.

Are you sure? It is easy to verify. AFAIK, I2S input allocates 4 blocks for input and you have only 5. You need IMO at least 6 to allow allocation of new blocks while data are still written to USB. Keep in mind that...

The few occasions I had similar problems, could be solved by reformatting with the official tool from sdcard.org

short answer: one of the first statements in ISR is to clear this particular interrupt, otherwise it can trigger again.

If you have access to GND (e.g. battery) then behind the hole needs to be only a contact that is connected to program pin. A grounded needle / wire will put teensy into programming mode. or have two nails (GND and...

Even without button, you still have the Program Pin, you can use to start programming by touching GND. It is fairly common for systems that are enclosed to have program pin accessible.

So much time has passed!

No, connect I2S MEMS directly to Teensy replacing the Audio shield. Run the following program #include <Audio.h> #include <Wire.h> #include <SPI.h> #include <SD.h> #include <SerialFlash.h> // GUItool: begin...

I ended up with RP2040 as an LC replacement :-(

Similar to @StefanPetrick delivery can take long time (in my case > 3 weeks) for delivery from UK to Germany (standard shipping). In addition to VAT I had also to pay custom handling.

Shipments from UK to EU are still ... lets say difficult.

Can someone explain in two sentences: Apart from replacing "void (*funct)()" by "callback funct" is there any other advantage, and what is different to "typedef void (*callback)() ;" that I used in the past? and why...