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RIOT/tests/driver_mhz19
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MrKevinWeiss 551d25a296
drivers/mhz19: Update kconfig model
2022-03-04 14:15:46 +01:00
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app.config.test drivers/mhz19: Update kconfig model 2022-03-04 14:15:46 +01:00
main.c drivers/mhz19: migrate to ztimer 2021-12-01 14:32:41 +01:00
Makefile drivers/mhz19: migrate to ztimer 2021-12-01 14:32:41 +01:00
README.md tests/mhz19: add test application 2020-06-17 08:41:41 +02:00

README.md

MH-Z19/MH-Z19B Driver Test

Introduction

This test will test if the MH-Z19 C02 gas sensor is working. The MH-Z19B seems to be newer design which also works with this driver.

Configuration

When testing the UART mode, set TEST_MODE to 1. To test the PWM mode, set TEST_MODE to 2. In UART mode, make sure that TEST_UART points to the interface to use. In PWM mode, make sure to define TEST_PWM.

Expected result

The sensor should continuously (every 1 sec) output the CO2 ppm level. When the sensor is disconnected, it should display a failure message every second.