pico-sensor-devices

Arduino Code for various Sensors modified to work in the pico-c-sdk

Sensors

• DHT22, Temperature and Humidity
• BH1750, Light (Lux)
• INA226, Voltage and Current
• PCF8563, RTC
• VEML6070, UV (Ultra Violet)
• BMP085/BMP180, Temperature and Atmospheric Pressure
• PCF8591, 8-bit A/D and D/A converter
• PCF8575, 16 port I/O Expander
• AT25Cx, EEPROM
• PCA9548A, I2C Mux

Feel free to issue PR's with additional devices.

Wire

All the sensors apart from the DHT22 are I2C sensors, most of these are compatible with the arduino sensor code, the wire class provides a compatible interface and is used by the sensors.

Each sensor class holds its own instance of wire, a "begin" method has been added or modified to pass in the pico i2c device.

The newer classes just read/write to I2C as the code was written by me and help of copilot.

Using

To use the library, follow these steps, it will be similar to that you would have used to use the "pico-extras" library.

1. Download the pico_sensors_import.cmake file to the root of your project.

   wget https://github.com/mwinters-stuff/pico-sensor-devices/blob/master/pico_sensors_import.cmake

2. Add the following lines to your CMakeLists.txt before the pico_sdk_init() call

      set(PICO_SENSORS_FETCH_FROM_GIT 1)
      include(pico_sensors_import.cmake)
   

3. Target the libraries you are using, each one is prefixed sensor_:

    target_link_libraries(my-project-name
      sensor_ADS1X15
      sensor_AT24Cx
      sensor_BH1750
      sensor_BMP085
      sensor_DHT22
      sensor_INA226
      sensor_PCF8563
      sensor_PCF8575
      sensor_PCF8591
      sensor_VEML6070
    )
   

4. In your code, include the header you need, if you didnt target the sensor then the header wont be found.

   #include "sensor/ADS1X15.h"
   #include "sensor/AT24Cx.h"
   #include "sensor/BH1750.h"
   #include "sensor/BMP085.h"
   #include "sensor/DHT22.h"
   #include "sensor/INA226.h"
   #include "sensor/PCF8563.h"
   #include "sensor/PCF8575.h"
   #include "sensor/PCF8591.h"
   #include "sensor/VEML6070.h"

5. Look in the examples directory, cmake will give you the targets to run and code.