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atc1441 / CH559sdccUSBHost

USB host to Arduino Interface with the Cheap CH559 uC
GNU General Public License v3.0
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[Question] Can I use this project to restore UART signals that have been converted by CH340? #21

Closed liu2-3zhi closed 11 months ago

liu2-3zhi commented 12 months ago

I am looking to implement a functionality similar to STM32 → UART → CH340 →USB → CH559 →ESP32. I am hoping that the CH559 can utilize the USB host to restore the UART signals. Is this something that can be achieved with this project?

GrantMTG commented 12 months ago

I can't speak to the firmware part as I haven't made any changes yet (though I was planning to turn it back into a Keil uVision project), but hardware-wise it would work. Most expensive "wire-replacement" I've seen in a while though

So assuming you have this on the STM32 side:

STM32 → UART → CH340 (USB Device) → USB cable

I'm guessing the CH340 is USB Device to UART, I've never used one before. And on the ESP32 side you'd have:

USB cable → CH559 (USB Host) → ESP32

then you'd need CDC (host) code for the CH559. I don't know if that exists (yet) or not.

Now having said all that there are lots of more direct ways of connecting an ESP32 to an STM32.