MHZ19/src/include/MHZ19/SampleConfig.h

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/*
 * Common code for initialising serial ports
 */

#define PWM_PIN 14

#define SERIAL_TX_PIN 2
#define MHZ19_TX_PIN 15
#define MHZ19_RX_PIN 13

namespace
{
HardwareSerial serial0(0);
MHZ19::Uart mhz19(serial0);
MHZ19::PwmReader pwmReader;
} // namespace

void initHardware()
{
    serial0.begin();
    serial0.swap();

    Serial.setPort(1);
    Serial.begin(SERIAL_BAUD_RATE, SERIAL_8N1, SERIAL_TX_ONLY, SERIAL_TX_PIN);
    Serial.systemDebugOutput(true);

    auto range = MHZ19::DetectionRange::PPM_2000;

    mhz19.setDetectionRange(range);
    pwmReader.begin(PWM_PIN, range);
}