90 lines
2.1 KiB
C++
90 lines
2.1 KiB
C++
/**
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* Copyright (C) 2021 Bosch Sensortec GmbH
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*
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*/
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#include "Arduino.h"
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#include "bme68xLibrary.h"
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#define NEW_GAS_MEAS (BME68X_GASM_VALID_MSK | BME68X_HEAT_STAB_MSK | BME68X_NEW_DATA_MSK)
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#define MEAS_DUR 140
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#ifndef PIN_CS
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#define PIN_CS SS
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#endif
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Bme68x bme;
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/**
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* @brief Initializes the sensor and hardware settings
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*/
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void setup(void)
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{
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SPI.begin();
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Serial.begin(115200);
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while (!Serial)
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delay(10);
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/* initializes the sensor based on SPI library */
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bme.begin(PIN_CS, SPI);
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if(bme.checkStatus())
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{
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if (bme.checkStatus() == BME68X_ERROR)
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{
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Serial.println("Sensor error:" + bme.statusString());
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return;
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}
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else if (bme.checkStatus() == BME68X_WARNING)
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{
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Serial.println("Sensor Warning:" + bme.statusString());
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}
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}
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/* Set the default configuration for temperature, pressure and humidity */
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bme.setTPH();
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/* Heater temperature in degree Celsius */
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uint16_t tempProf[10] = { 320, 100, 100, 100, 200, 200, 200, 320, 320,
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320 };
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/* Multiplier to the shared heater duration */
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uint16_t mulProf[10] = { 5, 2, 10, 30, 5, 5, 5, 5, 5, 5 };
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/* Shared heating duration in milliseconds */
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uint16_t sharedHeatrDur = MEAS_DUR - (bme.getMeasDur(BME68X_PARALLEL_MODE) / 1000);
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bme.setHeaterProf(tempProf, mulProf, sharedHeatrDur, 10);
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bme.setOpMode(BME68X_PARALLEL_MODE);
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Serial.println("TimeStamp(ms), Temperature(deg C), Pressure(Pa), Humidity(%), Gas resistance(ohm), Status, Gas index");
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}
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void loop(void)
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{
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bme68xData data;
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uint8_t nFieldsLeft = 0;
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/* data being fetched for every 140ms */
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delay(MEAS_DUR);
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if (bme.fetchData())
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{
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do
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{
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nFieldsLeft = bme.getData(data);
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if (data.status == NEW_GAS_MEAS)
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{
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Serial.print(String(millis()) + ", ");
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Serial.print(String(data.temperature) + ", ");
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Serial.print(String(data.pressure) + ", ");
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Serial.print(String(data.humidity) + ", ");
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Serial.print(String(data.gas_resistance) + ", ");
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Serial.print(String(data.status, HEX) + ", ");
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Serial.println(data.gas_index);
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}
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} while (nFieldsLeft);
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}
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}
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