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Updates readme with project description

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Simon Albinsson
2018-03-17 22:15:51 +01:00
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README.md
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# RPI_SGP30
Python-based SPI30 "program" for the SGP30
Based on the smbus2 for ease of use. Program to read eCO_2 and TVOC from the [https://www.sensirion.com/fileadmin/user_upload/customers/sensirion/Dokumente/9_Gas_Sensors/Sensirion_Gas_Sensors_SGP30_Datasheet_EN.pdf](SGP30 sensor).
It currently lacks support for many features features and is more of a crude demo than a proper library.
## Features that are known to be missing (listing in rough order of importance):
* CRC support
* reading/writing base-line data
* reading raw-values
* Proper structuring of the code
If you have the AdaFruit board with built in level shifters and voltage regulator it is should work if you just plug in [https://pinout.xyz/pinout/i2c](SDA to pin 3, SCL to pin 5, VCC to pin 17 and GND to pin 20). You should then be able to find the SGP30 an address 0x58 using `i2cdetect -y 1`. If you get an error message you probbably need to enable i2c in the kernel using [https://learn.sparkfun.com/tutorials/raspberry-pi-spi-and-i2c-tutorial](`raspi-config` and reboot)