And the takeaway from this exchange is that there is such a thing as the “ESP Journal”

https://medium.com/the-esp-journal

I’m interested in this topic as well.

Dana,
Does the AI-Thinker board have these parts?

Bob

For 60 sec. of 16 bit samples 4MB of PSRAM, as suggested above, would work but it has a slow write cycle. I don’t know if it would complete before the next interrupt.

Here’s a YouTube of the FIR Filter (Bandpass) running. Unoptimized ANSI C.
A 220 Tap Filter and the BLE Stack running at the same time in a $1 ESP32 is pretty amazing I think. But then I don’t get out much.

https://youtu.be/p_xYwLlHv3Y

I used the Espressif FIR filter from their ESP-DSP Library in a project.
Which someone might find useful.

https://docs.espressif.com/projects/esp ... s.html#fir

https://github.com/bobh/ESP_DSP/tree/ma ... P/ESP32FIR

Arduino passcode doesn’t work.
Need to use IDF examples.

48 hours later.
____
All done! You can now run:

. ./export.sh
____
"Thank You"

And now this ./install.sh Installing ESP-IDF tools Installing tools: xtensa-esp32-elf, xtensa-esp32s2-elf, esp32ulp-elf, openocd-esp32 Skipping xtensa-esp32-elf@esp32-2019r1-8.2.0 (already installed) WARNING: directory for tool xtensa-esp32s2-elf version esp32s2-dev-4-g3a626e9-8.2.0 is present, but ...

That looks like a Windows patch.
Removing the space from the url in /tools/tools.json doesn’t work either.
OK two spaces must be removed.

Following this: https://docs.espressif.com/projects/esp-idf/en/latest/get-started/index.html#get-started-get-esp-idf Checked this: https://github.com/espressif/esp-idf/issues/4297 Failed. Any help for me? Extracting /Users/bobh/.espressif/dist/xtensa-esp32s2-elf-gcc8_2_0-esp32s2-dev-4-g3a626e-macos....