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lib/SparkFun_BME280/examples/I2C_and_SPI_Multisensor/I2C_and_SPI_Multisensor.ino

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+/******************************************************************************
+I2C_and_SPI_Multisensor.ino
+BME280 Arduino and Teensy example
+Marshall Taylor @ SparkFun Electronics
+May 20, 2015
+https://github.com/sparkfun/SparkFun_BME280_Arduino_Library
+
+This sketch configures two BME280 breakouts.  One is configured as I2C and
+the other as SPI.  Data from both are displayed.
+
+Sensor A is I2C and connected through A4 and A5 (SDA/SCL)
+Sensor B is SPI and connected through pins 10, 11, 12, and 13 through a
+level shifter, with pin 10 being used for chip select.
+
+Resources:
+Uses Wire.h for I2C operation
+Uses SPI.h for SPI operation
+
+Development environment specifics:
+Arduino IDE 1.6.4
+Teensy loader 1.23
+
+This code is released under the [MIT License](http://opensource.org/licenses/MIT).
+Please review the LICENSE.md file included with this example. If you have any questions 
+or concerns with licensing, please contact techsupport@sparkfun.com.
+Distributed as-is; no warranty is given.
+******************************************************************************/
+
+#include <stdint.h>
+#include "SparkFunBME280.h"
+
+#include "Wire.h"
+#include "SPI.h"
+
+//Global sensor object
+BME280 mySensorA;
+BME280 mySensorB;
+
+void setup()
+{
+	//***Set up sensor 'A'******************************//
+	//commInterface can be I2C_MODE or SPI_MODE
+	mySensorA.settings.commInterface = I2C_MODE;
+	mySensorA.settings.I2CAddress = 0x77;
+	mySensorA.settings.runMode = 3; //  3, Normal mode
+	mySensorA.settings.tStandby = 0; //  0, 0.5ms
+	mySensorA.settings.filter = 0; //  0, filter off
+	//tempOverSample can be:
+	//  0, skipped
+	//  1 through 5, oversampling *1, *2, *4, *8, *16 respectively
+	mySensorA.settings.tempOverSample = 1;
+	//pressOverSample can be:
+	//  0, skipped
+	//  1 through 5, oversampling *1, *2, *4, *8, *16 respectively
+    mySensorA.settings.pressOverSample = 1;
+	//humidOverSample can be:
+	//  0, skipped
+	//  1 through 5, oversampling *1, *2, *4, *8, *16 respectively
+	mySensorA.settings.humidOverSample = 1;
+
+	
+	
+	
+	//***Set up sensor 'B'******************************//
+	//commInterface can be I2C_MODE or SPI_MODE
+	//specify chipSelectPin using arduino pin names
+	//specify I2C address.  Can be 0x77(default) or 0x76
+	mySensorB.settings.commInterface = SPI_MODE;
+	mySensorB.settings.chipSelectPin = 10;
+	mySensorB.settings.runMode = 3; //  3, Normal mode
+	mySensorB.settings.tStandby = 0; //  0, 0.5ms
+	mySensorB.settings.filter = 0; //  0, filter off
+	//tempOverSample can be:
+	//  0, skipped
+	//  1 through 5, oversampling *1, *2, *4, *8, *16 respectively
+	mySensorB.settings.tempOverSample = 1;
+	//pressOverSample can be:
+	//  0, skipped
+	//  1 through 5, oversampling *1, *2, *4, *8, *16 respectively
+    mySensorB.settings.pressOverSample = 1;
+	//humidOverSample can be:
+	//  0, skipped
+	//  1 through 5, oversampling *1, *2, *4, *8, *16 respectively
+	mySensorB.settings.humidOverSample = 1;
+	
+	
+	
+	//***Initialize the things**************************//
+	Serial.begin(57600);
+	Serial.print("Program Started\n");
+	Serial.println("Starting BME280s... result of .begin():");
+	delay(10);  //Make sure sensor had enough time to turn on. BME280 requires 2ms to start up.
+	//Calling .begin() causes the settings to be loaded
+	Serial.print("Sensor A: 0x");
+	Serial.println(mySensorA.begin(), HEX);
+	Serial.print("Sensor B: 0x");
+	Serial.println(mySensorB.begin(), HEX);
+
+
+}
+
+void loop()
+{
+	//Start with temperature, as that data is needed for accurate compensation.
+	//Reading the temperature updates the compensators of the other functions
+	//in the background.
+	Serial.print("Temperature: ");
+	Serial.print(mySensorA.readTempC(), 2);
+	Serial.print(", ");
+	Serial.print(mySensorB.readTempC(), 2);
+	Serial.println(" degrees C");
+
+	Serial.print("Temperature: ");
+	Serial.print(mySensorA.readTempF(), 2);
+	Serial.print(", ");
+	Serial.print(mySensorB.readTempF(), 2);
+	Serial.println(" degrees F");
+
+	Serial.print("Pressure: ");
+	Serial.print(mySensorA.readFloatPressure(), 2);
+	Serial.print(", ");
+	Serial.print(mySensorB.readFloatPressure(), 2);
+	Serial.println(" Pa");
+
+	Serial.print("Altitude: ");
+	Serial.print(mySensorA.readFloatAltitudeMeters(), 2);
+	Serial.print(", ");
+	Serial.print(mySensorB.readFloatAltitudeMeters(), 2);
+	Serial.println("m");
+
+	Serial.print("Altitude: ");
+	Serial.print(mySensorA.readFloatAltitudeFeet(), 2);
+	Serial.print(", ");
+	Serial.print(mySensorB.readFloatAltitudeFeet(), 2);
+	Serial.println("ft");	
+
+	Serial.print("%RH: ");
+	Serial.print(mySensorA.readFloatHumidity(), 2);
+	Serial.print(", ");
+	Serial.print(mySensorB.readFloatHumidity(), 2);
+	Serial.println(" %");
+	
+	Serial.println();
+	
+	delay(1000);
+
+}