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more tests
This commit is contained in:
626
861-tinycore-bcm280-test/libraries/MyBME280/MyBME280.cpp
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626
861-tinycore-bcm280-test/libraries/MyBME280/MyBME280.cpp
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@@ -0,0 +1,626 @@
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//MyBME280.cpp
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//Code fuer Arduino und Attiny85
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//Author Retian
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//Version 2.1
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/*
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Abfrage eines Luftdruck-/Luftfeuchtesensors BME280 ueber I2C- oder SPI-Schnittstelle
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(SPI-Schnittstelle nicht fuer Attiny)
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MyBME280 Name(i2cAdd); //fuer I2C-Schnittstelle
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MyBME280 Name(cs, interface); //fuer SPI-Schnittstelle; interface: BME280_SPI
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Beispiel siehe unter:
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http://arduino-projekte.webnode.at/meine-libraries/luftdruck-luftfeuchtesensor-bme280/
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Funktionen siehe unter:
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http://arduino-projekte.webnode.at/meine-libraries/luftdruck-luftfeuchtesensor-bme280/funktionen/
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*/
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//*************************************************************************
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#include "Arduino.h"
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#include "MyBME280.h"
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MyBME280::MyBME280(byte i2cAdd) : _cs(-1)
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{
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_i2cAdd = i2cAdd;
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Wire.begin();
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setDefaultParameters();
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}
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MyBME280::MyBME280(byte cs, byte interface)
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{
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#if defined_ATtiny
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//Keine Aktivitaet, wenn ein Attiny eingesetzt wird
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#else
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//"interface" wird nicht benoetigt, ist nur zur Unterscheidung
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//beim Aufruf der Instanzen zwischen SPI- und I2C-Schnittstelle
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_cs = cs;
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pinMode(_cs, OUTPUT);
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SPI.begin();
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setDefaultParameters();
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#endif
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}
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//*************************************************************************
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//Setzen der Standard-Parameter
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//(Interne Verwendung)
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void MyBME280::setDefaultParameters()
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{
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controlVal = 0;
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configVal = 0;
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controlHumVal = 0;
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//Setzen der Voreinstellungen
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mode = BME280_NORMAL_MODE;
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setMode(mode);
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osrs_p = BME280_P_OVERSAMPLING_x8; //Pressure oversampling x8
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setPressOversampling(osrs_p);
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osrs_t = BME280_T_OVERSAMPLING_x2; //Temperature oversampling x2
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setTempOversampling(osrs_t);
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osrs_h = BME280_H_OVERSAMPLING_x8; //Humidity oversampling x8
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setHumidityOversampling(osrs_h);
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t_sb = BME280_STANDBY_TIME_1000; //Standby time (NORMAL_MODE) = 1000 ms
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setStandbyTime(t_sb);
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filter = BME280_FILTER_COEFF_4; //Filter-Koeffizient = 4 (5 Stufen fuer 75%)
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setFilterCoeff(filter);
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}
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//*************************************************************************
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//BME280 vorhanden ?
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bool MyBME280::isReady()
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{
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if (read8(BMP280_CHIP_ID_REG) == BMP280_CHIP_ID) return true;
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else return false;
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}
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//*************************************************************************
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//BME280 initialisiern
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void MyBME280::init()
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{
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//BME280 zuruecksetzen
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reset();
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delay(300);
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//Kalibrierungskoeffizienten einlesen
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//Wenn der BME280 gerade die Koeffizienten ins interne
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//Image-Register liest, dann warte
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while (read8(BME280_STATUS_REG) & 0x01) delay(1);
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dig_T1 = (unsigned int)read16(BME280_DIG_T1_REG);
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dig_T2 = read16(BME280_DIG_T2_REG);
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dig_T3 = read16(BME280_DIG_T3_REG);
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dig_P1 = (unsigned int)read16(BME280_DIG_P1_REG);
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dig_P2 = read16(BME280_DIG_P2_REG);
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dig_P3 = read16(BME280_DIG_P3_REG);
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dig_P4 = read16(BME280_DIG_P4_REG);
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dig_P5 = read16(BME280_DIG_P5_REG);
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dig_P6 = read16(BME280_DIG_P6_REG);
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dig_P7 = read16(BME280_DIG_P7_REG);
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dig_P8 = read16(BME280_DIG_P8_REG);
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dig_P9 = read16(BME280_DIG_P9_REG);
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dig_H1 = (uint8_t)read8(BME280_DIG_H1_REG);
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dig_H2 = read16(BME280_DIG_H2_REG);
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dig_H3 = (uint8_t)read8(BME280_DIG_H3_REG);
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dig_H4 = (read8(BME280_DIG_H4_REG) << 4) |
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(read8(BME280_DIG_H4_REG + 1) & 0xF);
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dig_H5 = (read8(BME280_DIG_H5_REG + 1) << 4) |
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(read8(BME280_DIG_H5_REG) >> 4);
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dig_H6 = (uint8_t)read8(BME280_DIG_H6_REG);
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//Schreiben der gesetzten Parameter in die Register
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//Aenderungen beim Humidity-Controll-Register werden erst nach einer
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//Schreiboperation auf das Control-Register wirksam (lt. Datenblatt 5.4.3)
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write8(BME280_CONFIG_REG, configVal);
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write8(BME280_HUM_CONTROL_REG, controlHumVal);
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write8(BME280_CONTROL_REG, controlVal);
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}
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//*************************************************************************
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//Starte Einzelmessung (FORCED_MODE)
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void MyBME280::startSingleMeas()
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{
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controlVal &= B11111100;
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controlVal |= BME280_FORCED_MODE;
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write8(BME280_CONTROL_REG, controlVal);
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while (statusMeas()); //Warte bis Messzyklus beendet
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}
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//*************************************************************************
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//Ermittlung der Lufttemperatur
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float MyBME280::readTemp()
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{
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readRawData();
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if (adc_T == 0x80000) //Rueckgabe, wenn Temperaturmesseung ausgeschaltet ist
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return NAN;
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return calcTemp();
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}
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//*************************************************************************
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//Ermittlung des Luftdrucks
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float MyBME280::readPress()
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{
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readRawData();
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if (adc_P == 0x80000) //Rueckgabe, wenn Luftdruckmessung ausgeschaltet ist
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return NAN;
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calcTemp(); //calcPress() benoetigt t_fine aus calcTemp()
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return calcPress();
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}
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//*************************************************************************
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//Ermittlung der Luftfeuchtigkeit
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float MyBME280::readHumidity()
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{
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readRawData();
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if (adc_H == 0x8000) //Rueckgabe, wenn Luftfeuchtemessung ausgeschaltet ist
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return NAN;
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calcTemp(); //calcHumidity() benoetigt t_fine aus calcTemp()
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return calcHumidity();
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}
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//*************************************************************************
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//Reduzierten Luftdruck bezogen auf Meereshoehe ermitteln
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float MyBME280::readReducedPress(int hoehe)
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{
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//Berechne reduzierten Luftdruck
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int _hoehe = hoehe;
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readRawData();
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if (adc_P == 0x80000) //Rueckgabe, wenn Luftdruckmessung ausgeschaltet ist
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return NAN;
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calcTemp();
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return (calcPress() / (pow(1.0 - ((float)_hoehe / 44330.0), 5.255)));
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}
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//*************************************************************************
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//Einlesen von 8 Bytes (burst read) ueber die I2C-Schnittstelle
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//(Interne Verwendung)
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void MyBME280::readRawData()
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{
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while (statusMeas()); //Warte bis Messzyklus beendet
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if (_cs == -1)
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{
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Wire.beginTransmission(_i2cAdd);
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Wire.write(BME280_DATA_REG);
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Wire.endTransmission();
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Wire.requestFrom(_i2cAdd, (byte)8);
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adc_P = Wire.read();
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adc_P <<= 8;
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adc_P |= Wire.read();
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adc_P <<= 8;
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adc_P |= Wire.read();
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adc_P >>= 4;
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adc_T = Wire.read();
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adc_T <<= 8;
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adc_T |= Wire.read();
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adc_T <<= 8;
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adc_T |= Wire.read();
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adc_T >>= 4;
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adc_H = Wire.read();
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adc_H <<= 8;
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adc_H |= Wire.read();
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}
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else
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{
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#if defined_ATtiny
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//Keine Aktivitaet, wenn ein Attiny eingesetzt wird
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#else
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SPI.beginTransaction(SPISettings(5000000, MSBFIRST, SPI_MODE0));
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digitalWrite(_cs, LOW);
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SPI.transfer(BME280_DATA_REG | 0x80);
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adc_P = SPI.transfer(0);
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adc_P <<= 8;
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adc_P |= SPI.transfer(0);
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adc_P <<= 8;
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adc_P |= SPI.transfer(0);
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adc_P >>= 4;
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adc_T = SPI.transfer(0);
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adc_T <<= 8;
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adc_T |= SPI.transfer(0);
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adc_T <<= 8;
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adc_T |= SPI.transfer(0);
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adc_T >>= 4;
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adc_H = SPI.transfer(0);
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adc_H <<= 8;
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adc_H |= SPI.transfer(0);
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digitalWrite(_cs, HIGH);
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SPI.endTransaction();
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#endif
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}
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}
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//*************************************************************************
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//Temperatur ermitteln
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//(Interne Verwendung)
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float MyBME280::calcTemp()
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{
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int32_t var1, var2;
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int32_t temp;
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//Berechne Temperatur
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var1 = (((adc_T >> 3) - (dig_T1 << 1)) * dig_T2) >> 11;
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var2 = (((((adc_T >> 4) - (dig_T1)) * ((adc_T >> 4) - dig_T1)) >> 12) * dig_T3) >> 14;
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t_fine = var1 + var2;
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temp = (t_fine * 5 + 128) >> 8;
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return (float)temp / 100.0;
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}
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//*************************************************************************
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//Luftdruck ermitteln
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//(Interne Verwendung)
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float MyBME280::calcPress()
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{
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int64_t var1, var2;
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int64_t press;
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//Berechne Luftdruck
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var1 = ((int64_t)t_fine) - 128000;
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var2 = var1 * var1 * (int64_t)dig_P6;
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var2 = var2 + ((var1 * (int64_t)dig_P5) << 17);
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var2 = var2 + (((int64_t)dig_P4) << 35);
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var1 = ((var1 * var1 + (int64_t)dig_P3) >> 8) + ((var1 * (int64_t)dig_P2) << 12);
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var1 = (((((int64_t)1) << 47) + var1)) * ((int64_t)dig_P1) >> 33;
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if (var1 == 0) return 0;
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press= 1048576 - adc_P;
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press= (((press << 31) - var2) * 3125) / var1;
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var1 = (((int64_t)dig_P9) * (press>> 13) * (press>> 13)) >> 25;
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var2 = (((int64_t)dig_P8) * press) >> 19;
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press = ((press + var1 + var2) >> 8) + (((int64_t)dig_P7) << 4);
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press /= 256;
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||||
return (float) press / 100.0;
|
||||
}
|
||||
|
||||
//*************************************************************************
|
||||
//Luftfeuchte ermitteln
|
||||
//(Interne Verwendung)
|
||||
|
||||
float MyBME280::calcHumidity()
|
||||
{
|
||||
int32_t v_x1_u32r;
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||||
uint32_t humidity;
|
||||
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||||
//Berechne Luftfeuchtigkeit
|
||||
v_x1_u32r = (t_fine - ((int32_t)76800));
|
||||
v_x1_u32r = (((((adc_H << 14) - (((int32_t)dig_H4) << 20) - (((int32_t)dig_H5) * v_x1_u32r)) + ((int32_t)16384)) >> 15) * (((((((v_x1_u32r * ((int32_t)dig_H6)) >> 10) * (((v_x1_u32r * ((int32_t)dig_H3)) >> 11) + ((int32_t)32768))) >> 10) +
|
||||
((int32_t)2097152)) * ((int32_t)dig_H2) + 8192) >> 14));
|
||||
v_x1_u32r = (v_x1_u32r - (((((v_x1_u32r >> 15) * (v_x1_u32r >> 15)) >> 7) *
|
||||
((int32_t)dig_H1)) >> 4));
|
||||
v_x1_u32r = (v_x1_u32r < 0 ? 0 : v_x1_u32r);
|
||||
v_x1_u32r = (v_x1_u32r > 419430400 ? 419430400 : v_x1_u32r);
|
||||
humidity = (uint32_t)(v_x1_u32r >> 12);
|
||||
return (float)humidity / 1024.0;
|
||||
}
|
||||
|
||||
//*************************************************************************
|
||||
// Schreiben von 1 Byte ueber die I2C-Schnittstelle
|
||||
//(Interne Verwendung)
|
||||
|
||||
void MyBME280::write8(byte add, byte val)
|
||||
{
|
||||
byte _add = add;
|
||||
byte _val = val;
|
||||
|
||||
if (_cs == -1)
|
||||
{
|
||||
Wire.beginTransmission(_i2cAdd);
|
||||
Wire.write(_add);
|
||||
Wire.write(_val);
|
||||
Wire.endTransmission();
|
||||
}
|
||||
|
||||
else
|
||||
{
|
||||
#if defined_ATtiny
|
||||
//Keine Aktivitaet, wenn ein Attiny eingesetzt wird
|
||||
#else
|
||||
digitalWrite(_cs, LOW);
|
||||
SPI.beginTransaction(SPISettings(5000000, MSBFIRST, SPI_MODE0));
|
||||
SPI.transfer(_add & 0x7F);
|
||||
SPI.transfer(val);
|
||||
SPI.endTransaction();
|
||||
digitalWrite(_cs, HIGH);
|
||||
#endif
|
||||
}
|
||||
delay(5);
|
||||
}
|
||||
|
||||
//*************************************************************************
|
||||
// Einlesen von 1 Byte ueber die I2C-Schnittstelle
|
||||
//(Interne Verwendung)
|
||||
|
||||
byte MyBME280::read8(byte adr)
|
||||
{
|
||||
byte _adr = adr;
|
||||
byte val;
|
||||
|
||||
if (_cs == -1)
|
||||
{
|
||||
Wire.beginTransmission(_i2cAdd);
|
||||
Wire.write(_adr);
|
||||
Wire.endTransmission();
|
||||
Wire.requestFrom(_i2cAdd, (byte)1);
|
||||
val = Wire.read();
|
||||
}
|
||||
|
||||
else
|
||||
{
|
||||
#if defined_ATtiny
|
||||
//Keine Aktivitaet, wenn ein Attiny eingesetzt wird
|
||||
#else
|
||||
SPI.beginTransaction(SPISettings(5000000, MSBFIRST, SPI_MODE0));
|
||||
digitalWrite(_cs, LOW);
|
||||
SPI.transfer(_adr | 0x80);
|
||||
val = SPI.transfer(0);
|
||||
digitalWrite(_cs, HIGH);
|
||||
SPI.endTransaction();
|
||||
#endif
|
||||
}
|
||||
return val;
|
||||
}
|
||||
|
||||
//*************************************************************************
|
||||
// Einlesen von 2 Bytes ueber die I2C-Schnittstelle
|
||||
//(Interne Verwendung)
|
||||
|
||||
int MyBME280::read16(byte adr)
|
||||
{
|
||||
byte _adr = adr;
|
||||
int val;
|
||||
|
||||
if (_cs == -1)
|
||||
{
|
||||
Wire.beginTransmission(_i2cAdd);
|
||||
Wire.write(_adr);
|
||||
Wire.endTransmission();
|
||||
Wire.requestFrom(_i2cAdd, (byte)2);
|
||||
val = Wire.read() | (Wire.read() << 8);
|
||||
}
|
||||
|
||||
else
|
||||
{
|
||||
#if defined_ATtiny
|
||||
//Keine Aktivitaet, wenn ein Attiny eingesetzt wird
|
||||
#else
|
||||
SPI.beginTransaction(SPISettings(5000000, MSBFIRST, SPI_MODE0));
|
||||
digitalWrite(_cs, LOW);
|
||||
SPI.transfer(_adr | 0x80);
|
||||
val = SPI.transfer(0) | (SPI.transfer(0) << 8);
|
||||
digitalWrite(_cs, HIGH);
|
||||
SPI.endTransaction();
|
||||
#endif
|
||||
}
|
||||
return val;
|
||||
}
|
||||
|
||||
//*************************************************************************
|
||||
//Setzen des Modus
|
||||
|
||||
void MyBME280::setMode(byte mode)
|
||||
{
|
||||
byte _mode = mode;
|
||||
|
||||
controlVal &= B11111100; //Loesche mode
|
||||
controlVal |= _mode;
|
||||
}
|
||||
|
||||
//*************************************************************************
|
||||
//Setzen Temperatur-Oversampling
|
||||
|
||||
void MyBME280::setTempOversampling(byte osrs_t)
|
||||
{
|
||||
byte _osrs_t = osrs_t;
|
||||
|
||||
controlVal &= ~(B111 << 5); //Loesche Temp.oversampling
|
||||
controlVal |= (_osrs_t << 5);
|
||||
}
|
||||
|
||||
//*************************************************************************
|
||||
//Setzen Druck-Oversampling
|
||||
|
||||
void MyBME280::setPressOversampling(byte osrs_p)
|
||||
{
|
||||
byte _osrs_p = osrs_p;
|
||||
|
||||
controlVal &= ~(B111 << 2); //Loesche Press.oversampling
|
||||
controlVal |= (_osrs_p << 2);
|
||||
}
|
||||
|
||||
//*************************************************************************
|
||||
//Setzen Feuchte-Oversampling
|
||||
|
||||
void MyBME280::setHumidityOversampling(byte osrs_h)
|
||||
{
|
||||
byte _osrs_h = osrs_h;
|
||||
|
||||
controlHumVal &= ~(B111); //Loesche Humid.oversampling
|
||||
controlHumVal |= _osrs_h;
|
||||
}
|
||||
|
||||
//*************************************************************************
|
||||
//Setzen der Standby-Zeit (Normal-Modus)
|
||||
|
||||
void MyBME280::setStandbyTime(byte t_sb)
|
||||
{
|
||||
byte _t_sb = t_sb;
|
||||
|
||||
configVal &= ~(B111 << 5); //Loesche Standby Time
|
||||
configVal |= (_t_sb << 5);
|
||||
}
|
||||
|
||||
//*************************************************************************
|
||||
//Setzen des Filterkoeffizienten
|
||||
|
||||
void MyBME280::setFilterCoeff(byte filter)
|
||||
{
|
||||
byte _filter = filter;
|
||||
|
||||
configVal &= ~(B111 << 2); //Loesche Filter
|
||||
configVal |= (_filter << 2);
|
||||
}
|
||||
|
||||
//*************************************************************************
|
||||
//Abfrage des Controll-Register 0xF4
|
||||
|
||||
byte MyBME280::readControlReg(void)
|
||||
{
|
||||
return read8(BME280_CONTROL_REG);
|
||||
}
|
||||
|
||||
//*************************************************************************
|
||||
//Abfrage des Config-Register 0xF5
|
||||
|
||||
byte MyBME280::readConfigReg(void)
|
||||
{
|
||||
return read8(BME280_CONFIG_REG);
|
||||
}
|
||||
|
||||
//*************************************************************************
|
||||
//Abfrage des Humidity-Control-Register 0xF2
|
||||
|
||||
byte MyBME280::readHumidityControlReg(void)
|
||||
{
|
||||
return read8(BME280_HUM_CONTROL_REG);
|
||||
}
|
||||
|
||||
//*************************************************************************
|
||||
//Abfrage des Status des Measuring-Bit
|
||||
//(Interne Verwendung)
|
||||
|
||||
bool MyBME280::statusMeas()
|
||||
{
|
||||
byte reg;
|
||||
|
||||
reg = read8(BME280_STATUS_REG);
|
||||
return (reg & B00001000) >> 3;
|
||||
}
|
||||
|
||||
//*************************************************************************
|
||||
//Software-Reset
|
||||
//(Interne Verwendung)
|
||||
|
||||
void MyBME280::reset()
|
||||
{
|
||||
write8(BME280_RESET_REG, BME280_RESET);
|
||||
}
|
||||
|
||||
//*************************************************************************
|
||||
//Voreinstellung fuer Weather Monitoring
|
||||
|
||||
void MyBME280::setWeatherMonitoring()
|
||||
{
|
||||
mode = BME280_FORCED_MODE;
|
||||
setMode(mode);
|
||||
|
||||
osrs_p = BME280_P_OVERSAMPLING_x1; //Pressure oversampling x1
|
||||
setPressOversampling(osrs_p);
|
||||
|
||||
osrs_t = BME280_T_OVERSAMPLING_x1; //Temperature oversampling x1
|
||||
setTempOversampling(osrs_t);
|
||||
|
||||
osrs_h = BME280_H_OVERSAMPLING_x1; //Humidity oversampling x1
|
||||
setHumidityOversampling(osrs_h);
|
||||
|
||||
/*Keine Bedeutung bei WeatherMonitoring (Forced Mode)
|
||||
t_sb = BME280_STANDBY_TIME_62p5;
|
||||
setStandbyTime(t_sb);
|
||||
*/
|
||||
|
||||
filter = BME280_FILTER_COEFF_0; //Filter aus
|
||||
setFilterCoeff(filter);
|
||||
}
|
||||
|
||||
//*************************************************************************
|
||||
//Voreinstellung fuer Humidity Sensing (Luftfeuchtemessung)
|
||||
|
||||
void MyBME280::setHumiditySensing()
|
||||
{
|
||||
mode = BME280_FORCED_MODE;
|
||||
setMode(mode);
|
||||
|
||||
osrs_p = BME280_P_OVERSAMPLING_x0; //Pressure oversampling x0
|
||||
setPressOversampling(osrs_p);
|
||||
|
||||
osrs_t = BME280_T_OVERSAMPLING_x1; //Temperature oversampling x1
|
||||
setTempOversampling(osrs_t);
|
||||
|
||||
osrs_h = BME280_H_OVERSAMPLING_x1; //Humidity oversampling x1
|
||||
setHumidityOversampling(osrs_h);
|
||||
|
||||
/*Keine Bedeutung bei Humidity Sensing (Forced Mode)
|
||||
t_sb = BME280_STANDBY_TIME_62p5;
|
||||
setStandbyTime(t_sb);
|
||||
*/
|
||||
|
||||
filter = BME280_FILTER_COEFF_0; //Filter aus
|
||||
setFilterCoeff(filter);
|
||||
}
|
||||
|
||||
//*************************************************************************
|
||||
//Voreinstellung fuer Indoor Navigation
|
||||
|
||||
void MyBME280::setIndoorNavigation()
|
||||
{
|
||||
mode = BME280_NORMAL_MODE;
|
||||
setMode(mode);
|
||||
|
||||
osrs_p = BME280_P_OVERSAMPLING_x16; //Pressure oversampling x16
|
||||
setPressOversampling(osrs_p);
|
||||
|
||||
osrs_t = BME280_T_OVERSAMPLING_x2; //Temperature oversampling x2
|
||||
setTempOversampling(osrs_t);
|
||||
|
||||
osrs_h = BME280_H_OVERSAMPLING_x1; //Humidity oversampling x1
|
||||
setHumidityOversampling(osrs_h);
|
||||
|
||||
t_sb = BME280_STANDBY_TIME_0p5; //Standby Time 0,5 ms
|
||||
setStandbyTime(t_sb);
|
||||
|
||||
filter = BME280_FILTER_COEFF_16; //Filter-Koeffizient = 16 (22 Stufen fuer 75%)
|
||||
setFilterCoeff(filter);
|
||||
}
|
||||
|
||||
//*************************************************************************
|
||||
//Voreinstellung fuer Gaming
|
||||
|
||||
void MyBME280::setGaming()
|
||||
{
|
||||
mode = BME280_NORMAL_MODE;
|
||||
setMode(mode);
|
||||
|
||||
osrs_p = BME280_P_OVERSAMPLING_x4; //Pressure oversampling x4
|
||||
setPressOversampling(osrs_p);
|
||||
|
||||
osrs_t = BME280_T_OVERSAMPLING_x1; //Temperature oversampling x1
|
||||
setTempOversampling(osrs_t);
|
||||
|
||||
osrs_h = BME280_H_OVERSAMPLING_x0; //Humidity oversampling x0
|
||||
setHumidityOversampling(osrs_h);
|
||||
|
||||
t_sb = BME280_STANDBY_TIME_0p5; //Standby Time 0,5 ms
|
||||
setStandbyTime(t_sb);
|
||||
|
||||
filter = BME280_FILTER_COEFF_16; //Filter-Koeffizient = 16 (22 Stufen fuer 75%)
|
||||
setFilterCoeff(filter);
|
||||
}
|
||||
Reference in New Issue
Block a user