mysensors.cpp 3.01 KB
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#include "mysensors.h"
#include "utils.h"

// === LDR SETUP =======================================

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#define  LDR_PIN     1   // analog
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String read_LDR()
{
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    return FloatToString(100/1023.0 * (1023 - analogRead(LDR_PIN)));
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}

// === DHT22 SETUP =======================================

// https://github.com/adafruit/DHT-sensor-library

#define DHT22_PIN        4   // digital
#define DHTTYPE DHT22
DHT dht(DHT22_PIN, DHTTYPE);

String read_DHT22_TEMP()
{
    return FloatToString(dht.readTemperature());
}

String read_DHT22_AH()
{
    return FloatToString(dht.readHumidity());
}

// === BMP085 SETUP ===============================================

// https://github.com/adafruit/Adafruit-BMP085-Library

Adafruit_BMP085 bmp;
bool is_bmp085_connected=false;

String read_BMP085_PRESSURE()
{
    if (is_bmp085_connected)
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    {
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        return String(bmp.readPressure());
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    }
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    else
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    {
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        return String("<bmp085_not_found>");
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    }   
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}

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// === RTC_DS1307 SETUP ===========================================

// https://github.com/adafruit/RTClib

RTC_DS1307 rtc;

String read_RTC_DS1307()
{
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    return get_datetime_str(rtc.now());

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    if (rtc.isrunning())
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    {
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        return get_datetime_str(rtc.now());
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    }
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    else
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    {
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        return String("<RTC_DS1307_not_found>");
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    }
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}

String get_datetime_str(DateTime dt)
{
    String result="";

    result += String(dt.year(), DEC);
    result += String("-");
    result += String(dt.month(), DEC);
    result += String("-");
    result += String(dt.day(), DEC);
    result += String(" ");
    result += String(dt.hour(), DEC);
    result += String(":");
    result += String(dt.minute(), DEC);
    result += String(":");
    result += String(dt.second(), DEC);

    return result;
}

// Expects something like "2015,6,28,13,13,10"
String set_time_from_csv(String s)
{
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    /*
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    if (!rtc.isrunning())
    {
        return String("<RTC_DS1307_not_found>");
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    } */
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    DateTime dt;    
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    int i_month = s.indexOf(CSV_SEP);
    int i_day = s.indexOf(CSV_SEP, i_month + 1);
    int i_hour = s.indexOf(CSV_SEP, i_day + 1);
    int i_minute = s.indexOf(CSV_SEP, i_hour + 1);
    int i_second = s.indexOf(CSV_SEP, i_minute + 1);

    String year = s.substring(0, i_month);
    String month = s.substring(i_month + 1, i_day);
    String day = s.substring(i_day + 1, i_hour);
    String hour = s.substring(i_hour + 1, i_minute);
    String minute = s.substring(i_minute + 1, i_second);
    String second = s.substring(i_second + 1);

    dt = DateTime(year.toInt(), month.toInt(), day.toInt(), \
                  hour.toInt(), minute.toInt(), second.toInt());

    rtc.adjust(dt);

    return String("done: ") + get_datetime_str(dt);
}

// ----------------------------------------------------------------

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void mysensors_setup()
{
    dht.begin();
    is_bmp085_connected = bmp.begin();
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#ifdef AVR
    Wire.begin();
#else
    Wire1.begin(); // Shield I2C pins connect to alt I2C bus on Arduino Due
#endif
    rtc.begin();
    // adjust rtc from compile date time
    // rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));
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}