Serial devices (FTDI, CP210X, PL2303, CH340/1 and CDC)

[probonopd]

@sdima1357 great work 👍

Would it be possbile to also support serial devices like

• FTDI FT23... series
• Prolific PL2303
• SiLabs CP210X range
• CH340G / CH341G
• CDC Communications, e.g., Arduino Boards using CDC (UNO, Mega, Leonardo etc.)

similar to https://www.hobbytronics.co.uk/usb-host-serial?

This would be very useful e.g., for 3D printer applications, where the ESP32 could be used to steer a 3D printer attached over USB.

[sdima1357]

Unfortunately this program implements only Host side and can work with only Low speed devices (1.5 Mb/s)

[probonopd]

@sdima1357 that should be plenty for 115,200 bits/s serial which is typical for e.g., 3D printing applications?

[sdima1357]

It doesn't matter. USB 1.1 Devices may be 2 types :
1: Full speed 12 Mbits/s - FS device which connect D+ line to 3.3 v for recognize it.
2: Low speed 1.5 Mbits/s - LS device which connect D- line to 3.3 v for recognize it.
I can't exchange data with HS device. CH-340,FTDI FT232 - FS devices .They have different speed & different protocol :(

[probonopd]

Ah, I understand. Thanks for the clarification!