More beyond MIDI    hard&firm

"CForth" Forth interpreter for STM32G4xx, STM32F042 and STM32L476

Veroboard photo CForth is a 32 bit Forth interpreter system completely written in C language.
The intention is to make a straightforward user oriented Forth system,
specifically to organize interactive electronic control
of art objects and installations
or similar process control.

Primarily the code was developed for STM32G431KB (LQFP32),
but STM32G441KB is supported, too.

Based on this source, modified firmware versions for STM32F042 TSSOP20 and LQFP32 (also works with STM32F070), for STM32L476 Nucleo-64 and STM32G431 Nucleo-64 are provided.

Veroboard compatible PCB designs are proposed.    ...more

CForth Low Power version for STM32G431, STM32G441 and STM32F042

Veroboard photo This special version is preferably designed for
interactive control of dynamic objects powered by small solar panels or similar projects by means of the Forth programming language.

The power reduction is essentially obtained by a low CPU clock (921.6kHz, optionally switchable at runtime to 3.6864MHz or 14.7456MHz)
and terminal access only by RS-232 instead USB.
Else this CForth version has almost the same Forth kernel features as the standard version.

Appropriate hardware was developed under the aspects of saving power.
Veroboard compatible single layer PCB layouts are available for download.    ...more

SPI I/O expansion board for CForth compatible hardware

Veroboard photo This SPI controlled circuit provides two 12 bit DAC, 8 digital IN, 8 digital OUT.

It can be operated with 3.3V supply or with 5V supply/3.3V logic level.
Due to a special chip select design, three ICs can be controlled with a single /CS line.
This way it fits especially for the CForth compatible STM32F042 board, but can be used generally with SPI mode 0, 8 bit.
Clock speed is uncritical up to 500 kHz.

A Veroboard compatible single layer PCB layout is available for download.   ...more

"DTerm" terminal software for RS-232 and UDP

It is surely not the best terminal emulator,
but has been developed over the years for best fitness with my actual projects.

The present version 3.13 is optimized for interactive upload
of scripts and source code, working together with the CForth project.

As a result of older projects, next to RS-232,
Ethernet UDP terminal operation is supported.
A lot of TCP / Telnet terminals are available,
but tools for manual communication over UDP are rare.   ...more

Simple digital sine wave generator

Generator assembled in enclosure Construction of a simple digital sine wave generator based on Atmel ATXmega32A4 is described.
The frequency range is 40Hz to 15.6 Kilohertz.
With pushbuttons, three independent frequencies are selectable:
default frequencies 5kHz, 1kHz, 200Hz, which is good for rapid test of audio circuits.
The frequency of each button can be tuned over the full frequency range.

The source code written in assembler language and schematic is published here.

An additional charger for a built-in 9V block accumulator is described too. This way it is an ideal out-of-lab service tool.     ...more


* State of information April 2022.
* The hints presented here are for information only. No product features, specifications or useability are assured in juridical sense.
* All information based on best knowledge, but without any warranty. Any responsibility is excluded.
* Trademarks and product names cited in this text are property of their respective owners.

* Informationsstand April 2022.
sie geben keine Zusicherung von Produkteigenschaften und -Tauglichkeiten im rechtlichen Sinne
* Alle Informationen nach bestem Wissen, jedoch ohne Gewähr und unter Ausschluß jeglicher Haftung.
* Im Text zitierte Warenzeichen und Produktnamen sind geschütztes Eigentum ihrer jeweiligen Eigentümer.