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RIOT/tests/drivers/sm_pwm_01c/README.md

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# Test Application for the Amphenol SM_PWM_01C infrared dust sensor
## About
This is a simple test application for the SM_PWM_01C driver.
## Expected result
If everything works then you should see the progress bar vary if dust
concentration changes in the room, or manually block the infrared inputs
to force a change.
Overly exaggerated values (blocked infrared sensor) can be seen here:
```
# main(): This is RIOT! (Version: 2021.04-devel-1044-gfd36c-HEAD)
# sm_pwm_01c driver test application
# starting weighted average PM2.5 and PM10 measurements
#
# PM2.5 level: 1272 ug/m3|███████████ |
# PM10 level: 490 ug/m3|████ |
````
## Details
By default a moving average over a 30s window is returned ad the
read value. The progress bar is updated every 200ms.