esp32_usb_soft_host

esp32_usb_soft_host

esp32 USB-LS pure software host thru general IO pins. Up to 4 HID devices simultaneously.

Code is compatible with ESP-IDF version < 5.0, latest: https://github.com/espressif/esp-idf/releases/tag/v4.4.8

board ~$3 :https://www.aliexpress.com/premium/LOLIN32.html or any of https://www.aliexpress.com/premium/ESP32.html

usb connectors(for example): https://www.aliexpress.com/item/1005002027124387.html

//set right esp32 env for me it:

export IDF_PATH=$HOME/esp/esp-idf

source $HOME/esp/esp-idf/export.sh

//connect the board, build & flash

git clone https://github.com/sdima1357/esp32_usb_soft_host

cd esp32_usb_soft_host/usb_test/

idf.py set-target esp32

idf.py menuconfig

Please set in Menuconfig->compiler options -> optimization level> O2 ( must be in O2 options. “idf.py set-target esp32” resets it to Og ,I don’t know why)

idf.py flash monitor

Test run with 3 mouses, $3 CY7C68013A logic analyser and amazing program https://sigrok.org/wiki/PulseView :

Tue Aug 31 15:50:48 IDT 2021

Add esp32c3 support.

idf.py set-target esp32c3

idf.py menuconfig

set in:

Menuconfig->compiler options -> optimization level> O2

only for esp32c3: Component config-> ESP System Setting -> Memory protection-> Disable.

idf.py flash monitor

Warning(disclaimer): Sorry, but target of this project right now - only research & proof of feasibility. I can’t debug hardware which i don’t have. Some hardware(devices) may not work, from different reasons. In the case of problem i suggest to check wires & use $3 CY7C68013A logic analyser. Sometimes i can help.