stmdsp

The stmdsp project enables certain STM32 development boards to be used as a digital signal processing (DSP) education tool. The solution is portable, and can be used without any external tools or lab equipment.

The project consists of three parts: the firmware, which allows users to upload custom DSP algorithms to process signals in real-time; the hardware, which provides the necessary circuitry for interfacing with signals and the host computer; and the computer software, a program currently named stmdspgui that facilitates algorithm design and execution while also providing numerous analysis features.

Features

• Real-time signal processing: signal readings from the ADC are streamed through the loaded algorithm and outputted over the DAC.
• Supports signal sampling rates from 8kS/s up to 96kS/s.
• Supports signals between -3.3V and +3.3V, with adequate protection for the development board.
• Custom algorithms are uploaded to the hardware at run-time, enabling a faster design and test process.
• Parameter knobs allow for algorithm adjustments while the algorithm is running.
• An on-board signal generator eliminates the need for external generators.
• Numerous analysis features, including signal visualization and measuring algorithm execution time, eliminate the need for other external tools.

Learn more

See the project's wiki for more details. The doc folder also contains add-on board schematics and a work-in-progress PDF guide (which may later be abandoned in favor of the wiki).

Licensing

The stmdsp, stmdspgui, and ChibiOS projects are all licensed under version three of the GNU General Public License.