SleepRTC_HCSr04_MOSFET.ino

/*******************************************************************************
 * Copyright (c) 2015 Thomas Telkamp and Matthijs Kooijman
 *
 * Permission is hereby granted, free of charge, to anyone
 * obtaining a copy of this document and accompanying files,
 * to do whatever they want with them without any restriction,
 * including, but not limited to, copying, modification and redistribution.
 * NO WARRANTY OF ANY KIND IS PROVIDED.
 *
 * This example sends a valid LoRaWAN packet with payload "Hello,
 * world!", using frequency and encryption settings matching those of
 * the The Things Network.
 *
 * This uses OTAA (Over-the-air activation), where where a DevEUI and
 * application key is configured, which are used in an over-the-air
 * activation procedure where a DevAddr and session keys are
 * assigned/generated for use with all further communication.
 *
 * Note: LoRaWAN per sub-band duty-cycle limitation is enforced (1% in
 * g1, 0.1% in g2), but not the TTN fair usage policy (which is probably
 * violated by this sketch when left running for longer)!
 * To use this sketch, first register your application and device with
 * the things network, to set or generate an AppEUI, DevEUI and AppKey.
 * Multiple devices can use the same AppEUI, but each device has its own
 * DevEUI and AppKey.
 *
 * Do not forget to define the radio type correctly in config.h.
 *
 *******************************************************************************/

#include <lmic.h>
#include <hal/hal.h>
#include <SPI.h>
#include <RTCZero.h> // Download from https://github.com/arduino-libraries/RTCZero

RTCZero rtc;


#define trigPin A0
#define echoPin A1
#define mosfetPin A5
#define VBATPIN A7 

long duration;
int distance;

// This EUI must be in little-endian format, so least-significant-byte
// first. When copying an EUI from ttnctl output, this means to reverse
// the bytes. For TTN issued EUIs the last bytes should be 0xD5, 0xB3,
// 0x70. isb
static const u1_t PROGMEM APPEUI[8] = { 0x09, 0x24, 0x02, 0xD0, 0x7E, 0xD5, 0xB3, 0x70 };
void os_getArtEui (u1_t* buf) { memcpy_P(buf, APPEUI, 8);}

// This should also be in little endian format, see above. isb
static const u1_t PROGMEM DEVEUI[8] = { 0xDA, 0x39, 0x11, 0x00, 0x00, 0xB6, 0x76, 0x98 };
void os_getDevEui (u1_t* buf) { memcpy_P(buf, DEVEUI, 8);}

// This key should be in big endian format (or, since it is not really a
// number but a block of memory, endianness does not really apply). In
// practice, a key taken from the TTN console can be copied as-is. msb
static const u1_t PROGMEM APPKEY[16] = { 0x68, 0x46, 0x0E, 0x4D, 0x3A, 0xA5, 0x31, 0x14, 0x7C, 0xCE, 0xEE, 0x07, 0x0F, 0x60, 0x94, 0xB5 };
void os_getDevKey (u1_t* buf) {  memcpy_P(buf, APPKEY, 16);}

// payload to send to TTN gateway
static uint8_t payload[5];
static osjob_t sendjob;

// Schedule TX every this many seconds (might become longer due to duty
// cycle limitations).
const unsigned TX_INTERVAL = 900; //900 seconds for 15 mins

// Pin mapping for Adafruit Feather M0 LoRa
const lmic_pinmap lmic_pins = {
    .nss = 8,
    .rxtx = LMIC_UNUSED_PIN,
    .rst = 4,
    .dio = {3, 6, LMIC_UNUSED_PIN},
    .rxtx_rx_active = 0,
    .rssi_cal = 8,              // LBT cal for the Adafruit Feather M0 LoRa, in dB
    .spi_freq = 8000000,
};

void onEvent (ev_t ev) {
    Serial.print(os_getTime());
    Serial.print(": ");
    switch(ev) {
        case EV_SCAN_TIMEOUT:
            Serial.println(F("EV_SCAN_TIMEOUT"));
            break;
        case EV_BEACON_FOUND:
            Serial.println(F("EV_BEACON_FOUND"));
            break;
        case EV_BEACON_MISSED:
            Serial.println(F("EV_BEACON_MISSED"));
            break;
        case EV_BEACON_TRACKED:
            Serial.println(F("EV_BEACON_TRACKED"));
            break;
        case EV_JOINING:
            Serial.println(F("EV_JOINING"));
            break;
        case EV_JOINED:
            Serial.println(F("EV_JOINED"));
            {
              u4_t netid = 0;
              devaddr_t devaddr = 0;
              u1_t nwkKey[16];
              u1_t artKey[16];
              LMIC_getSessionKeys(&netid, &devaddr, nwkKey, artKey);
              Serial.print("netid: ");
              Serial.println(netid, DEC);
              Serial.print("devaddr: ");
              Serial.println(devaddr, HEX);
              Serial.print("artKey: ");
              for (size_t i=0; i<sizeof(artKey); ++i) {
                if (i != 0)
                  Serial.print("-");
                Serial.print(artKey[i], HEX);
              }
              Serial.println("");
              Serial.print("nwkKey: ");
              for (size_t i=0; i<sizeof(nwkKey); ++i) {
                      if (i != 0)
                              Serial.print("-");
                      Serial.print(nwkKey[i], HEX);
              }
              Serial.println("");
            }
            // Disable link check validation (automatically enabled
            // during join, but because slow data rates change max TX
      // size, we don't use it in this example.
            LMIC_setLinkCheckMode(0);
            break;
        /*
        || This event is defined but not used in the code. No
        || point in wasting codespace on it.
        ||
        || case EV_RFU1:
        ||     Serial.println(F("EV_RFU1"));
        ||     break;
        */
        case EV_JOIN_FAILED:
            Serial.println(F("EV_JOIN_FAILED"));
            break;
        case EV_REJOIN_FAILED:
            Serial.println(F("EV_REJOIN_FAILED"));
            break;
            break;
        case EV_TXCOMPLETE:
            Serial.println(F("EV_TXCOMPLETE (includes waiting for RX windows)"));
            if (LMIC.txrxFlags & TXRX_ACK)
              Serial.println(F("Received ack"));
            if (LMIC.dataLen) {
              Serial.println(F("Received "));
              Serial.println(LMIC.dataLen);
              Serial.println(F(" bytes of payload"));
            }
            // Ensure all debugging messages are sent before sleep
            Serial.flush();
      
            // Sleep for a period of TX_INTERVAL using single shot alarm
            rtc.setAlarmEpoch(rtc.getEpoch() + TX_INTERVAL);
            rtc.enableAlarm(rtc.MATCH_YYMMDDHHMMSS);
            rtc.attachInterrupt(alarmMatch);
            // USB port consumes extra current
            USBDevice.detach();
            // Enter sleep mode
            rtc.standbyMode();
            // Reinitialize USB for debugging
            USBDevice.init();
            USBDevice.attach();
            // Schedule next transmission
            os_setTimedCallback(&sendjob, os_getTime()+sec2osticks(1), do_send);
            break;
        case EV_LOST_TSYNC:
            Serial.println(F("EV_LOST_TSYNC"));
            break;
        case EV_RESET:
            Serial.println(F("EV_RESET"));
            break;
        case EV_RXCOMPLETE:
            // data received in ping slot
            Serial.println(F("EV_RXCOMPLETE"));
            break;
        case EV_LINK_DEAD:
            Serial.println(F("EV_LINK_DEAD"));
            break;
        case EV_LINK_ALIVE:
            Serial.println(F("EV_LINK_ALIVE"));
            break;
        /*
        || This event is defined but not used in the code. No
        || point in wasting codespace on it.
        ||
        || case EV_SCAN_FOUND:
        ||    Serial.println(F("EV_SCAN_FOUND"));
        ||    break;
        */
        case EV_TXSTART:
            Serial.println(F("EV_TXSTART"));
            break;  
        default:
            Serial.print(F("Unknown event: "));
            Serial.println((unsigned) ev);
            break;
    }
}


void do_send(osjob_t* j){
    // Check if there is not a current TX/RX job running
    if (LMIC.opmode & OP_TXRXPEND) {
        Serial.println(F("OP_TXRXPEND, not sending"));
    } else {
        // Sensor readings may also be up to 2 seconds 'old' (its a very slow sensor)
        //delay(2000);
        // Clears the trigPin

        
  digitalWrite(LED_BUILTIN, HIGH);

  digitalWrite(LED_BUILTIN, LOW);
  //delay(30000);

  digitalWrite(mosfetPin, HIGH); //turn on mosfet pin
  delay(70);
  
  digitalWrite(trigPin, LOW);
  delayMicroseconds(2);

// Sets the trigPin on HIGH state for 10 micro seconds

  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);

//Echo
   
    duration = pulseIn(echoPin, HIGH);
    digitalWrite(mosfetPin, LOW);

// Calculating the distance
    distance= duration*0.034/2;

// Distance in CM
// Prints the distance on the Serial Monitor
Serial.print("Distance: "); Serial.print(distance);
Serial.println(" cm");


float measuredvbat = analogRead(VBATPIN);
measuredvbat *= 2;    // we divided by 2, so multiply back
measuredvbat *= 3.3;  // Multiply by 3.3V, our reference voltage
measuredvbat /= 1024; // convert to voltage
Serial.print("VBat: " ); 
Serial.println(measuredvbat);




        // prepare upstream data transmission at the next possible time.
        // transmit on port 1 (the first parameter); you can use any value from 1 to 223 (others are reserved).
        // don't request an ack (the last parameter, if not zero, requests an ack from the network).
        // Remember, acks consume a lot of network resources; don't ask for an ack unless you really need it.
        LMIC_setTxData2(1, payload, sizeof(payload)-1, 0);
        Serial.println(F("Packet queued"));
    }
    // Next TX is scheduled   after TX_COMPLETE event.

}

void setup() {
  
    Serial.begin(9600);
    //while (!Serial);
    Serial.println(F("Starting"));
   
    pinMode(trigPin, OUTPUT); // Sets the trigPin as an Output
    pinMode(echoPin, INPUT); // Sets the echoPin as an Input
    pinMode(mosfetPin, OUTPUT); //initialize mosfet pin
    digitalWrite(mosfetPin, LOW); //initialize mosfet pin
    
  
    /*  
    int count;
    unsigned char pinNumber;
  
    // ***** Put unused pins into known state *****
    pinMode(0, INPUT_PULLUP);
    pinMode(1, INPUT_PULLUP);
  
    // D8-D13, A0(D14)-A5(D19), SDA(D20), SCL(D21), MISO(D22)
    for (pinNumber = 8; pinNumber <= 22; pinNumber++)
    {
      pinMode(pinNumber, INPUT_PULLUP);
    }
    // RX_LED (D25) & TX_LED (D26) (both LED not mounted on Mini Ultra Pro)
    pinMode(25, INPUT_PULLUP);
    pinMode(26, INPUT_PULLUP);
    // D30 (RX) & D31 (TX) of Serial
    pinMode(30, INPUT_PULLUP);
    pinMode(31, INPUT_PULLUP);
    // D34-D38 (EBDG Interface)
    for (pinNumber = 34; pinNumber <= 38; pinNumber++)
    {
      pinMode(pinNumber, INPUT_PULLUP);
    }
    // ***** End of unused pins state initialization *****
  
    pinMode(LED_BUILTIN, OUTPUT);

    //#ifdef VCC_ENABLE
    // For Pinoccio Scout boards
    //pinMode(VCC_ENABLE, OUTPUT);
    //digitalWrite(VCC_ENABLE, HIGH);
    //delay(1000);
    //#endif
    */

        // Initialize RTC
    rtc.begin();
    // Use RTC as a second timer instead of calendar
    rtc.setEpoch(0);
  
    // LMIC init
    os_init();
    // Reset the MAC state. Session and pending data transfers will be discarded.
    LMIC_reset();
    // Disable link-check mode and ADR, because ADR tends to complicate testing.
    LMIC_setLinkCheckMode(0);
    // Set the data rate to Spreading Factor 7.  This is the fastest supported rate for 125 kHz channels, and it
    // minimizes air time and battery power. Set the transmission power to 14 dBi (25 mW).
    LMIC_setDrTxpow(DR_SF7,14);
    // in the US, with TTN, it saves join time if we start on subband 1 (channels 8-15). This will
    // get overridden after the join by parameters from the network. If working with other
    // networks or in other regions, this will need to be changed.
    LMIC_selectSubBand(1);

    // Start job (sending automatically starts OTAA too)
    do_send(&sendjob);
    
}

void loop() {
    os_runloop_once();
}

void alarmMatch()
{

}