Moddable 6 Schematic?

[amcelroy]

Hi,

I recently purchased a Moddable 6 with the hopes of pairing it with Rust and Slint UI for a demo. The Rust part has gone great, ESP32 support is top notch, probe-rs works great to flash and debug over the USB port, Embassy is working really well.

I'm not sure how to go about understanding the connection between the ESP32 and the ST7789 though, as that isn't in the documentation.

• Is there a schematic or place in the drivers that I could learn more about the ESP32 / ST7789 connection?
• These docs state the connection is 8-bit parallel, is it possible to get the pins? I found this discussion regarding a similar issue and they listed a manifest for a moddable zero and tried to find the Moddable 6 pin manifest here but didn't see it.
• Which color mode is the ST7789 operating in?

Really cool little dev kit, especially for embedded Rust with a GUI. Thanks for making it!

Embassy + Rust + Probe-rs:

Header Pins of interest:

[phoddie]

Glad you like the hardware. We think it is pretty awesome.

And Rust is fun: like JavaScript, it is a memory safe language that works well on embedded hardware.

Moddable hardware is intended to be used with the Moddable SDK in JavaScript or TypeScript. From the top of our hardware page, "Our hardware is designed to be paired with the Moddable SDK, eliminating the need for any special set‑up or configuration."

You'll find just about all the pin configurations in the Moddable Six manifest. There's additional information in the Moddable Six documentation.

Which color mode is the ST7789 operating in?

We run it in 16-bit 565 little endian. The display controller supports various modes. It is a common part so the data sheet is readily available.

[phoddie]

Please let us know if this answers your question. Thank you.

[amcelroy]

I apologize for not responding, yes, that is exactly what I was looking for, thank you!

[phoddie]

Perfect. Thanks for confirming.