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RIOT/tests/driver_si70xx
iosabi f72efb1daf drivers/si70xx: Add support for Si705x sensors
The Silicon Labs Si705x sensors (Si7050/1/3/4/5) are very similar to the
Si7021 sensors featuring only a temperature sensor and no humidity
sensor. The only difference between the Si705x is the temperature
accuracy of the reading, ranging from +/- 0.1 C in the Si7051 to +/- 1 C
in the Si7050.

This patch adds support for this family of sensors extending the
functionality of the existing si70xx driver. Following the style of
other modules, this implements a pseudomodule per supported chip, adding
si7050, si7051, si7053, si7054 and si7055 pseudomodules.

As a minor change this patch also implements the missing
si70xx_get_serial, si70xx_get_id and si70xx_get_revision functions that
were declared in the si70xx.h header but implemented as private
functions. The si70xx_get_id() may be relevant for the application to
know at run time exactly which version of the hardware is installed.

The updated test running with a Si7051 shows the following output, which
seems consistent with the room temperature conditions during the test.

```
make SI70XX_VARIANT=si7051 -C tests/driver_si70xx/ all flash
```

```
SI70XX temperature and humidity sensor test application
Initializing sensor...
[OK]
Found SI7051 sensor, revision 32
temperature: 24.71 C
temperature: 24.69 C
```
2021-04-17 20:14:35 +00:00
..
app.config.test tests/driver_s*: add Kconfig configuration files 2021-01-21 11:24:31 +01:00
main.c drivers/si70xx: Add support for Si705x sensors 2021-04-17 20:14:35 +00:00
Makefile drivers/si70xx: Add support for Si705x sensors 2021-04-17 20:14:35 +00:00
README.md drivers/si70xx: cleanup and use pseudomodules 2017-11-05 18:13:19 +01:00

Si70xx Driver Test

Introduction

This test checks if the Si7006/13/20/21 temperature and humidity sensor is working.

Expected result

After initialization, the sensor continuously (every 1 sec) displays the relative humidity and temperature. The precision is two digits.