IPASS 2019 Herkansing

About

This project is a library that provides functionality that makes it easy to use a bmp280 with bmpwk and hwlib.
All three modes(SLEEP, FORCED, NORMAL) work. IIR, standby (also for bme280) and oversampling works.
A bme280 can also be used.However, humidity does not work on a bme280.

Requirements

Software requirements

Bmptk and hwlib.

Hardware requirements

BME280 or BMP280.

How to use

The library is fairly easy to use.

   // hwlib functionality
   auto scl           = hwlib::target::pin_oc{ hwlib::target::pins::scl };
   auto sda           = hwlib::target::pin_oc{ hwlib::target::pins::sda };
   auto i2c_bus       = hwlib::i2c_bus_bit_banged_scl_sda( scl, sda );
   
   // bmp280 functionality
   bmp280 bmpInstance(i2c_bus, 0x76);
   bmpInstance.configure()       // configures bmp280 settings. Required before calling any other methods.
   bmpInstance.getTemperature(); // get temperature as degrees celcius float.
   bmpInstance.getPressure();    // get pressure in Pa.
   bmpInstance.getAltitude();    // get altitude in meters.
   bmpInstance.setMode(MODE);    // set bmp mode.
   bmpInstance.setIIR(IIR_RES);  // set iir resolution for pressure.
   bmpInstance.setOversampling(OVERSAMPLING);   // set oversampling of measurements.
   bmpInstance.setStandbyTime(STANDBY_TIME);    // set standby time in normal mode.
   bmpInstance.getErrors();      // Get possible errors.

Resources

hwlib: https://github.com/wovo/hwlib
bmptk: https://github.com/wovo/bmptk

Future

Adding full support for the BME280 also.