73 lines
2.6 KiB
Arduino
73 lines
2.6 KiB
Arduino
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/***************************************************************************
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This is a library for the BMP280 humidity, temperature & pressure sensor
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Designed specifically to work with the Adafruit BMP280 Breakout
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----> http://www.adafruit.com/products/2651
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These sensors use I2C or SPI to communicate, 2 or 4 pins are required
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to interface.
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Adafruit invests time and resources providing this open source code,
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please support Adafruit andopen-source hardware by purchasing products
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from Adafruit!
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Written by Limor Fried & Kevin Townsend for Adafruit Industries.
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BSD license, all text above must be included in any redistribution
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***************************************************************************/
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#include <Wire.h>
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#include <SPI.h>
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#include <Adafruit_BMP280.h>
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#define BMP_SCK (13)
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#define BMP_MISO (12)
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#define BMP_MOSI (11)
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#define BMP_CS (10)
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Adafruit_BMP280 bmp; // I2C
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//Adafruit_BMP280 bmp(BMP_CS); // hardware SPI
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//Adafruit_BMP280 bmp(BMP_CS, BMP_MOSI, BMP_MISO, BMP_SCK);
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void setup() {
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Serial.begin(9600);
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while ( !Serial ) delay(100); // wait for native usb
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Serial.println(F("BMP280 test"));
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unsigned status;
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//status = bmp.begin(BMP280_ADDRESS_ALT, BMP280_CHIPID);
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status = bmp.begin();
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if (!status) {
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Serial.println(F("Could not find a valid BMP280 sensor, check wiring or "
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"try a different address!"));
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Serial.print("SensorID was: 0x"); Serial.println(bmp.sensorID(),16);
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Serial.print(" ID of 0xFF probably means a bad address, a BMP 180 or BMP 085\n");
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Serial.print(" ID of 0x56-0x58 represents a BMP 280,\n");
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Serial.print(" ID of 0x60 represents a BME 280.\n");
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Serial.print(" ID of 0x61 represents a BME 680.\n");
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while (1) delay(10);
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}
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/* Default settings from datasheet. */
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bmp.setSampling(Adafruit_BMP280::MODE_NORMAL, /* Operating Mode. */
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Adafruit_BMP280::SAMPLING_X2, /* Temp. oversampling */
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Adafruit_BMP280::SAMPLING_X16, /* Pressure oversampling */
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Adafruit_BMP280::FILTER_X16, /* Filtering. */
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Adafruit_BMP280::STANDBY_MS_500); /* Standby time. */
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}
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void loop() {
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Serial.print(F("Temperature = "));
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Serial.print(bmp.readTemperature());
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Serial.println(" *C");
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Serial.print(F("Pressure = "));
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Serial.print(bmp.readPressure());
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Serial.println(" Pa");
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Serial.print(F("Approx altitude = "));
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Serial.print(bmp.readAltitude(1013.25)); /* Adjusted to local forecast! */
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Serial.println(" m");
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Serial.println();
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delay(2000);
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}
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