ESP32 Forum

Hello, I would like to know how could I make my ESP32 s3 act as a file injector where when the esp would be connected to a device it would create a really small string for example “hello” in its internal memory and automatically paste it as a txt file into the root folder of the device.

You need to be a bit more clear on what you want: what device are we talking about, how do you expect the ESP32S3 to interface with it (USB, Samba, SPI, ...?), were does the string come from, ...?

The device would be a graphing calculator that I wanted to interface with through usb. I want to make this as a proof of concept so I was thinking if the string would only be a 1-3 bytes it could be stored directly on the esp.

Okay, sounds like it is possible. Does the calculator just look like an USB stick if you plug it into a PC, or do you need to run special software to talk to it?

It pops up in the file explorer and I can read/write files from and to it without any 3rd party apps

Sounds like it works like a standard USB mass storage device then. In that case, this example should already do most of what you want.

In that case I am guessing I should install esp idf for vs script?

Posting an update. Everything worked perfectly and the esp creates a folder in the calculator with files inside. Big thanks to sprite for helping me find the example I needed and I will no be able to continue working on the project

Glad to hear you got it working!