src/NW_BME280.cpp

Source code

/******************************************************************************
NW_BME280.cpp — NW_BME280
Northern Widget interface for the Bosch BME280 temperature, humidity,
and pressure sensor.

Bobby Schulz @ Northern Widget LLC

Distributed as-is; no warranty is given.
******************************************************************************/

#include "NW_BME280.h"

BME::BME()
{
}

bool BME::begin(uint8_t ADR_)
{
    ADR = ADR_;
    return Sensor.begin(ADR);
}

float BME::getPressure()
{
    return Sensor.readPressure() * 0.01;  // Pa → mBar
}

float BME::getHumidity()
{
    return Sensor.readHumidity();
}

float BME::getTemperature()
{
    return Sensor.readTemperature();
}

String BME::getHeader()
{
    return "Pressure Atmos [mBar],Humidity [%],Temp Atmos [C],";
}

String BME::getString()
{
    return String(getPressure()) + "," + String(getHumidity()) + "," + String(getTemperature()) + ",";
}

void BME::beginRawReadings() {}

uint16_t BME::takeRawReading(char* buf, uint16_t offset) {
    char tmp[10];
    dtostrf(getPressure(),    1, 2, tmp); offset += snprintf(buf + offset, 10, "%s,", tmp);
    dtostrf(getHumidity(),    1, 2, tmp); offset += snprintf(buf + offset, 10, "%s,", tmp);
    dtostrf(getTemperature(), 1, 2, tmp); offset += snprintf(buf + offset, 10, "%s,", tmp);
    return offset;
}

void BME::endRawReadings() {}

// ── PascalCase aliases (deprecated) ───────────────────────────────────────────

float BME::GetPressure()     { return getPressure(); }
float BME::GetHumidity()     { return getHumidity(); }
float BME::GetTemperature()  { return getTemperature(); }
String BME::GetHeader()      { return getHeader(); }
String BME::GetString()      { return getString(); }

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Updated on 2026-05-15 at 05:04:17 +0000