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#include "n900proximitysensor.h"

#include <QFile>

#include <QDebug>

#include <string.h>

#include <time.h>

const char *n900proximitysensor::id("n900.proximity");

const char *n900proximitysensor::filename("/sys/bus/platform/devices/proximity/state");

n900proximitysensor::n900proximitysensor(QSensor *sensor)

    : n900filebasedsensor(sensor)

{

    setReading<QProximityReading>(&m_reading);

    addDataRate(100, 100); // 100Hz

    sensor->setDataRate(100); // default is 10Hz

}

void n900proximitysensor::start()

{

    if (!QFile::exists(QLatin1String(filename)))

        goto error;

    n900filebasedsensor::start();

    return;

error:

    sensorStopped();

}

void n900proximitysensor::poll()

{

    FILE *fd = fopen(filename, "r");

    if (!fd) return;

    char buffer[20];

    int rs = fscanf(fd, "%s", buffer);

    fclose(fd);

    if (rs != 1) return;

    bool close;

    if (strcmp(buffer, "closed") == 0) {

        close = true;

    } else {

        close = false;

    }

    if (close != m_reading.close()) {

        m_reading.setTimestamp(clock());

        m_reading.setClose(close);

        newReadingAvailable();

    }

}