Hi ! I have been working on a project for the past month on Arduino IDE. I have to now implement a feature that lets me use my MCU (ESP32 -S3 - DFR1145 FireBeetle 2 ) as a USB host to connect a mass storage device (most likely a USB Flash drive or a SD card reader ).

I wish to transfer all the log files I have on an SD card connected to my MCU, to a Flash Drive. My problem is, I cannot seem to find anything useful in the arduino core to help me use my esp32-s3 as a USB-CDC Host device.

The closest I have come is through this library : https://github.com/chegewara/EspTinyUSB . It still fails to compile and says hal/usb_hal.h is missing, which I figured was because of me using arduino-esp32 v3.x., instead of v2.x. I downgraded to 2.0.17, yet I haven't achieved any success.

Digging around, I have been led to believe that the Arduino Core for ESP32 has limited native USB Host support, so ESP-IDF is recommended for direct access to USB Host libraries. The thing is, I am fairly new to embedded programming, totally out of my depth when it comes to ESP-IDF. I am trying but have not gotten any success at all.

Can someone please point me to the right direction ? Any example of reading/writing to a mass storage device as a USB host. Any teeny-tiny implementation that I can leverage to make further progress. Thanks a lot, in advance.