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smlng 50f052b943 tests: set default board=stm32f4discovery for tests/periph_dac 5 years ago
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Makefile tests: set default board=stm32f4discovery for tests/periph_dac 5 years ago
README.md tests/periph_dac: updated test for API changes 6 years ago
main.c xtimer: Update xtimer usage to match API changes 6 years ago

README.md

About

This is a test application for a digital to analog converter (DAC).

This test application tries to initialize every available DAC line. If successful, it will output a saw tooth pattern with a period of about 10Hz on each of the available lines.

Usage

Connect an oscilloscope to the DAC pins and look at the signal levels (you should be able to clearly see the saw tooth signal in your scope)