It is an esp32 with screen and keyboard. I hope it is possible.
For the T-Keyboard (T-DECK) I am still waiting for the grove cable for firmware download, as it seems you need to use the serial port (not the USB-C) to download the firmware.
For both I wonder how to keep the original “firmware” as my T-DECK has LoRa and cardputer also have a lot of features.
For those who don’t know it, the M5Stack Cardputer is a 56-key keyboard and 1.14" TFT screen with a resolution of 240 x 135 pixels that includes a M5StampS3 module, containing an ESP32-S3:
For more information see: M5Stack Cardputer Kit with M5StampS3,
The screen seems a bit small for programming in Lisp; with a 5x7 bitmap font it will provide 16 lines of 40 characters. However, it should be possible to port the ESP32 version of uLisp to it. However, note my reservation about the ESP32-S3 built-in USB interface, as yet unfixed:
I don’t currently recommend ESP32-S2, ESP32-C3, or ESP32-S3 boards that use the built-in USB interface (USB CDC) because of a problem that causes them to hang up if you upload a long Lisp program (at least on MacOS).
As far as keeping the original firmware is concerned, I assume you mean being able to access the firmware functions, such as LoRa on the T-Deck, from uLisp? To do this you would need to implement a uLisp extension file containing uLisp functions that implement the firmware features, which would require C programming.
I have an M5Stack Cardputer in my handle for months (be side my hand made Lisp Badge LE, thanks David:), I also would like to see someone can run uLisp on it with full screen/keyboard support, then I can follow:).
I tried once to rebuild the firmware of Cardputer from it’s opensource repo, the ESP32 tools chain looks like very mature and easy to use, I hope I can compile/flash uLisp with this tools chain instead of Arduino IDE which can only compile a single file.
I got my hands on one of these and ported uLisp to it. It was much easier to do than the t-deck because it has nice arduino libraries. The screen is quite crisp but I’m not sure how big to make the font. Enjoy!
Good job!
Can you please share some photos of the chars/code on the screen? I tried once to build firmware for it with official ESP SDK, and that’s my preferred way compare to Arduino IDE.
My phone camera isn’t good but here you go. I recommend you build it with Arduino at first to make sure you have everything set up then try it the other way.
