Sensirion I2C SDP Arduino Library

This is the Sensirion SDP library for Arduino using the modules I2C interface.

Click here to learn more about the SDP3x Sensor Evaluation Kit.

Click here to learn more about the SDP8xx series Sensor Evaluation Kit.

Installation

To install, download the latest release as .zip file and add it to your Arduino IDE via

Sketch => Include Library => Add .ZIP Library...

Don't forget to install the dependencies listed below the same way via Add .ZIP Library

Note: Installation via the Arduino Library Manager is coming soon.

Dependencies

• Sensirion Core

Quick Start

1. Connect the SDP Sensor to your Arduino board's standard I2C bus. Check the pinout of your Arduino board to find the correct pins. The pinout of the SDP Sensor board can be found in the data sheet.

   • VDD of the SEK-SDP to the 3V3 of your Arduino board (5V is also possible)
   • GND of the SEK-SDP to the GND of your Arduino board
   • SCL of the SEK-SDP to the SCL of your Arduino board
   • SDA of the SEK-SDP to the SDA of your Arduino board

2. Open the exampleUsage sample project within the Arduino IDE

   File => Examples => Sensirion I2C SDP => exampleUsage

3. Click the Upload button in the Arduino IDE or

   Sketch => Upload

4. When the upload process has finished, open the Serial Monitor or Serial Plotter via the Tools menu to observe the measurement values. Note that the Baud Rate in the corresponding window has to be set to 115200 baud.

I2C address selection in exampleUsage

In the provided exampleUsage it is possible to select the I2C address depending on the model of the sensor used. When using the wrong address the sensor will not answer the I2C requests, resulting in NACK errors. Please find the possible values below:

constant_name	value
SDP8XX_I2C_ADDRESS_0	0x25
SDP8XX_I2C_ADDRESS_1	0x26
SDP3X_I2C_ADDRESS_0	0x21
SDP3X_I2C_ADDRESS_1	0x22
SDP3X_I2C_ADDRESS_2	0x23

Contributing

Contributions are welcome!

We develop and test this driver using our company internal tools (version control, continuous integration, code review etc.) and automatically synchronize the master branch with GitHub. But this doesn't mean that we don't respond to issues or don't accept pull requests on GitHub. In fact, you're very welcome to open issues or create pull requests :)

This Sensirion library uses clang-format to standardize the formatting of all our .cpp and .h files. Make sure your contributions are formatted accordingly:

The -i flag will apply the format changes to the files listed.

clang-format -i src/*.cpp src/*.h

Note that differences from this formatting will result in a failed build until they are fixed.

License

See LICENSE.