About Sduino

The idea is to smoothen the path towards your first successful STM8-based project.

The Arduino project was very successful in offering a simplified API hiding most of the complexity of embedded system programming while still allowing for advanced programming technics.

The SPL (standard peripheral library) offered by ST is very powerful and provides an relativly easy migration path towards the STM32 CPU series in case a project outgrows the capabilities of the 8-bit STM8 series. But using that library is not very intuitive and still requires a fairly detailed knowledge of the CPU internals. compiling the SPL with SDCC

Tools used

This project is based on free tools that are available for Linux, MacOS, and Windows. It uses the small devices C compiler (SDCC) for compiling, stm8flash for uploading the binary to the CPU, and simple Makefiles for the build process.

Support for the Cosmic compiler under Windows and integration into the ST visual developer IDE might be possible, but is not done (yet?).

The build process is controlled by a makefile based on the amazing Arduino.mk makefile by Sudar.

Project origin

For a customer I needed to port an existing project from an ATmega to a better suited (read: cheaper) platform. As the project was based on some Arduino libraries, porting parts of the Arduino environment was the logical first step. After doing that porting the firmware was finished in a couple of days. Porting some of the more commonly used Arduino libraries was a fun project done in my spare time later.

About me

I am a freelance programmer for embedded systems and electronics developer based in Heidelberg, Germany. I work with embedded systems for more than 25 years now.


current CPU architectures: AVR (ATmega, ATxmega), PIC, STM8, STM32, MCS51

classic CPU architectures: 6502, 68HC11, 6809, Z80, MCS48

electronics development: optical sensors, laser driver, sensor electronics, measurement equipment, industrial control, SMPS, displays (LCD, TFT)