ESP32 ESP-NOW/TCP sending files MicroPython [uasyncio]- Suggestions

[rarefeen]

I am quite new at this, does anyone know which would good protocol or method to send audio files between two esp32?
I saw quite few articles about using TCP and webserver, but did not find any on ESP-NOW, maybe because it is quite new.
I try to do it using uasyncio startserver to make server and send files using various methods [ so far failed miserably].
so I am looking for methods and opinions whether anyone has done it with uasyncio start server, then connect with client to send audio file. or used ESP-NOW protocol to send files.
Thank you for any advices.
[forgive me if the question is too basic or I made a mistake in my writing.]

[bixb922]

Perhaps this could help on the ESP32 side; https://github.com/robert-hh/FTP-Server-for-ESP8266-ESP32-and-PYBD
Installing and importing uftp.py starts a FTP server on the ESP32. On the PC there are many clients available, from command line curl to drag and drop. You'll need to start wifi.

[rarefeen]

@glenn20 Thank you, is it on v1.20 or 1.19 also supports?

[glenn20]

I believe it is in 1.20, but not 1.19.

[rarefeen]

@glenn20 @peterhinch sorry if this is a dumb question,
But is there any way to change the micropython firmware [for example, custom install few libraries and make a main.py and other files ]. then make it into firmware file?
so I can use it[same custom firmware] on multiple esp32 devices? If it is possible, how to do it, is there any guideline?
for example, if I install microdot on micropython V1.2, then I want to make it into firmware so that I do not need to install it on other esp32's.

[peterhinch]

See this doc which explains frozen bytecode. Another approach is to use standard firmware but use mpremote to install the modules you need. mpremote can be scripted, so you would only need to run the script against each target to adapt it.

[rarefeen]

@peterhinch Thank you, I will look into it now.
for more clarification, What I ultimately wanted is, I have several esp32, I wanted to make a .bin file [firmware],
meaning I want to upload codes into esp32 then just export the firmware including the files from esp32 in a .bin.