eforth-stm32f4x-a

eForth for STM32F407 Discovery board

local studies by wa1tnr

Target board: STM32F407 Discovery

Target board: Adafruit STM32F405 Express

Sun Dec 20 14:24:03 UTC 2020

NEWS

TURNKEY with eForth logo in blue - working

As of 20 December, the turnkey code seems to be working well - displays the eForth logo on the Lumex 96x8 RGB display (it uses TTL serial to talk, and a Hayes-like ‘AT’ command set, similar (roughly) to an older modem.

STM32F407 Discovery - primary target

The STM32F407 Discovery was received in the post, from DigiKey, earlier in the year, and became the primary target for the program, as a result (needed to have the extra GPIO pins not available on the Adafruit target, which is otherwise suitable).

Lumex 96x8 RGB matrix, 3mm pitch, supported.

The Lumex display uses Hayes style ‘AT’ commands.

The trick to messaging to the display is to do so continuously; if there’s much of a delay, then the display will not accumulate the message - it will start over again at the left margin, after blanking the entire display.

The Lumex display support was written entirely in Forth. ;)

Including the setup for the second USART pin pair.

older: Tue Dec 17 22:00:36 UTC 2019

from: doc/notes.txt

Tue Dec 17 22:55:21 UTC 2019

Dr. C.H. Ting’s eForth for the STM32F407 Discovery board:

http://forth.org/OffeteStore/OffeteStore.html

STM32 eForth - 2014

    http://forth.org/OffeteStore/2165_stm32eForth720.zip

Target board: Adafruit STM32F405 Express

http://adafru.it/4382

Dr. Ting’s eForth runs (unmodified) on the Adafruit board. GPIO support is on four unavailable pins, however.

TX/RX (for USART1) is brought out on (STM32F405 Express) SCL/SDA.

rename repository:

eforth-stm4x-a > eforth-stm32f4x-a

REFERENCES

Markdown:

[https://guides.github.com/features/mastering-markdown/]

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