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# GyverBME280
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Lightweight BME280 I2C library for Arduino
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### Compatibility
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Compatible with all Arduino platforms (using Arduino functions)
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## Content
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- [Install](#install)
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- [Initialization](#init)
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- [Usage](#usage)
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- [Example](#example)
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- [Versions](#versions)
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- [Bugs and feedback](#feedback)
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<a id="install"></a>
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## Installation
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- The library can be found by the name **GyverBME280** and installed via the library manager in:
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- Arduino IDE
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- Arduino IDE v2
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- PlatformIO
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- [Download library](https://github.com/GyverLibs/GyverBME280/archive/refs/heads/main.zip) .zip archive for manual installation:
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- Unzip and put in *C:\Program Files (x86)\Arduino\libraries* (Windows x64)
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- Unzip and put in *C:\Program Files\Arduino\libraries* (Windows x32)
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- Unpack and put in *Documents/Arduino/libraries/*
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- (Arduino IDE) automatic installation from .zip: *Sketch/Include library/Add .ZIP library…* and specify the downloaded archive
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- Read more detailed instructions for installing libraries [here] (https://alexgyver.ru/arduino-first/#%D0%A3%D1%81%D1%82%D0%B0%D0%BD%D0%BE% D0%B2%D0%BA%D0%B0_%D0%B1%D0%B8%D0%B1%D0%BB%D0%B8%D0%BE%D1%82%D0%B5%D0%BA)
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<a id="init"></a>
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## Initialization
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```cpp
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GyverBME280 bme;
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```
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<a id="usage"></a>
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## Usage
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```cpp
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boolbegin(void); // run with standard addresscatfish (0x76)
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bool begin(uint8_t address); // run with address
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bool isMeasuring(void); // returns true while the measurement is in progress
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float readPressure(void); // read pressure in Pa
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float readHumidity(void); // Read humidity in %
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void oneMeasurement(void); // Take one measurement and go to sleep
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float readTemperature(void); // Read temperature in degrees C
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void setMode(uint8_tmode); // set the mode of operation
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// modes:
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NORMAL_MODE
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FORCED_MODE
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void setFilter(uint8_tmode); // change the filter factor. Call before begin
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// coefficients:
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FILTER_DISABLE
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FILTER_COEF_2
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FILTER_COEF_4
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FILTER_COEF_8
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FILTER_COEF_16
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void setStandbyTime(uint8_tmode); // Change time between measurements. Call before begin
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// modes:
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STANDBY_500US
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STANDBY_10MS
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STANDBY_20MS
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STANDBY_6250US
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STANDBY_125MS
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STANDBY_250MS
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STANDBY_500MS
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STANDBY_1000MS
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void setHumOversampling(uint8_t mode); // Set up oversampling or disable humidity. Call before begin
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void setTempOversampling(uint8_t mode); // Set up oversampling or disable temperature. Call before begin
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void setPressOversampling(uint8_t mode); // Set up oversampling or disable pressure. Call before begin
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// modes:
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MODULE_DISABLE
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OVERSAMPLING_1
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OVERSAMPLING_2
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OVERSAMPLING_4
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OVERSAMPLING_8
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OVERSAMPLING_16
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```
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<a id="example"></a>
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## Example
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See **examples** for other examples!
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```cpp
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/*
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A simple example showing the basic functions of measuring temperature, pressure and humidity
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*/
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#include <GyverBME280.h> // Including the library
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GyverBME280 bme; // Create bme object
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void setup() {
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Serial.begin(9600); // Start serial port
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bme.begin(); // If add. settings are not needed - initialize the sensor
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}
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void loop() {Serial.print("Temperature: ");
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Serial.print(bme.readTemperature()); // Print temperature in [*C]
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Serial.println("*C");
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Serial.print("Humidity: ");
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Serial.print(bme.readHumidity()); // Output humidity in [%]
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Serial.println("%");
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float pressure = bme.readPressure(); // Read pressure in [Pa]
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Serial.print("Pressure: ");
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Serial.print(pressure / 100.0F); // Display pressure in [hPa]
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Serial.print(" hPa , ");
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Serial.print(pressureToMmHg(pressure)); // Output pressure in [mmHg. pillar]
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Serial.println("mm hg");
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Serial.print("Altide: ");
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Serial.print(pressureToAltitude(pressure)); // Print height in [m a.s.l. seas]
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Serial.println("m");
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Serial.println("");
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delay(1000);
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}
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```
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<a id="versions"></a>
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## Versions
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- v1.3 - fixed bug when negative. temperature
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- v1.4 - split into h and cpp
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- v1.5 - added support for BMP280
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<a id="feedback"></a>
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## Bugs and feedback
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When you find bugs, create an **Issue**, or better, immediately write to the mail [alex@alexgyver.ru](mailto:alex@alexgyver.ru)
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The library is open for revision and your **Pull Request**'s!
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