diff options
Diffstat (limited to 'sensorPlugins/heartrateSensor.cpp')
-rw-r--r-- | sensorPlugins/heartrateSensor.cpp | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/sensorPlugins/heartrateSensor.cpp b/sensorPlugins/heartrateSensor.cpp new file mode 100644 index 0000000..3ae18ee --- /dev/null +++ b/sensorPlugins/heartrateSensor.cpp @@ -0,0 +1,53 @@ +#include <QDateTime> +#include <QTimer> +#include <QtSensors/QHrmSensor> +#include <QDebug> +#include <QString> + +#include "../logger.h" + +#include "heartrateSensor.h" + +HeartrateSensorPlugin::HeartrateSensorPlugin(QObject *parent, int initInterval) : + QObject(parent){ + interval = initInterval; + + hrmSensor = new QHrmSensor(this); + connect(hrmSensor,SIGNAL(readingChanged()),this,SLOT(finishRecording())); + + qDebug() << "heartrate sensor is enabled. interval is (ms) " << interval; + recordIntervalTimer = new QTimer(this); + connect(recordIntervalTimer,SIGNAL(timeout()),this,SLOT(triggerRecording())); + recordIntervalTimer->setSingleShot(true); + recordIntervalTimer->start(interval); + lastRecordTime = QDateTime::currentDateTime(); +} + +void HeartrateSensorPlugin::timeUpdate() { + uint elapsed = QDateTime::currentMSecsSinceEpoch() - lastRecordTime.toMSecsSinceEpoch(); + qDebug() << "time until next steps recording" << recordIntervalTimer->remainingTime() << " elapsed = " << elapsed << " lastRecordTime " << lastRecordTime.toMSecsSinceEpoch(); + if (elapsed > interval) { //if too much time has passed, reset the timer and record + triggerRecording(); + lastRecordTime = QDateTime::currentDateTime(); + } else { //otherwise, restart the timer and compensate for time spent in suspend + recordIntervalTimer->start(interval - elapsed); + } +} + +void HeartrateSensorPlugin::triggerRecording() { + qDebug() << "heartrate interval recording"; + recordIntervalTimer->start(interval); + hrmSensor->start(); +} + +void HeartrateSensorPlugin::finishRecording() { + qDebug() << "bpm update received"; + int bpm = hrmSensor->reading()->bpm(); + qDebug() << QDateTime::currentDateTime().toString("hh:mm:ss") << " : " << bpm << hrmSensor->status() << hrmSensor->isActive(); + if ((bpm == 0) || (hrmSensor->status() < 3)) { + qDebug() << "hrm sensor accuracy insufficient. waiting."; + return; + } + writeReadingToFile(QString::number(QDateTime::currentSecsSinceEpoch()) + " : " + QString::number(bpm) + "\n", "hrmOut.txt"); + hrmSensor->stop(); +} |