MurataのLoRaWANチップCMWX1ZZABZ搭載ボードをArduino IDEで開発　プログラム編

/* Simple ABP join for a LoRaWAN network
 *  
 *  In setup() below please replace the argument to LoRaWAN.begin()
 *  with your appropriate region specific band:
 *
 *  AS923
 *  AU915
 *  EU868
 *  IN865
 *  KR920
 *  US915
 *
 *  AU915/US915 networks have 64+8 channels. Typical gateways support only
 *  8 (9) channels. Hence it's a good idea to pick the proper channel
 *  subset via select via LoRaWAN.setSubBand(),
 *    
 *  EU868/IN865 have duty cycle restrictions. For debugging it makes sense
 *  to disable those via setDutyCycle(false);
 *    
 *  For an external antenna one should set the proper antenna gain
 *  (default is 2.0) via setAntennaGain().
 *    
 *  Please edit the keys below as they are just debugging samples.
 *    
 *    
 * This example code is in the public domain.
 */
 
#include "LoRaWAN.h"
#include "TimerMillis.h"
 
#define Interval 360000                                     /* 送信間隔　単位はmS この場合6分おきに送信します */
 
const char *devAddr = "00000000"                            /* 書き換えてください。 */
const char *nwkSKey = "00000000000000000000000000000000";   /* 書き換えてください。 */
const char *appSKey = "00000000000000000000000000000000";   /* 書き換えてください。 */
 
TimerMillis transmitTimer;
 
static char counter = 0;                                    /* 送信カウンター Char型なので 255になったら0に戻ります */
 
void transmitCallback(void)
{
    /* ここから */
    if (!LoRaWAN.joined() || LoRaWAN.busy())
    {
        Serial.println("LoRaWAN Non Active!");
        LoRaWAN.rejoinABP();
    }
    /* ここまで追加しました */
 
    if (LoRaWAN.joined() && !LoRaWAN.busy())
    {
        Serial.print("TRANSMIT( ");
        Serial.print("TimeOnAir: ");
        Serial.print(LoRaWAN.getTimeOnAir());
        Serial.print(", NextTxTime: ");
        Serial.print("NextTxTime: ");
        Serial.print(LoRaWAN.getNextTxTime());
        Serial.print(", MaxPayloadSize: ");
        Serial.print(LoRaWAN.getMaxPayloadSize());
        Serial.print(", DR: ");
        Serial.print(LoRaWAN.getDataRate());
        Serial.print(", TxPower: ");
        Serial.print(LoRaWAN.getTxPower(), 1);
        Serial.print("dbm, UpLinkCounter: ");
        Serial.print(LoRaWAN.getUpLinkCounter());
        Serial.print(", DownLinkCounter: ");
        Serial.print(LoRaWAN.getDownLinkCounter());
        Serial.println(" )");
 
        LoRaWAN.beginPacket();
        LoRaWAN.write(0xef);
        LoRaWAN.write(0xbe);
        LoRaWAN.write(0xad);
        LoRaWAN.write(counter);                             /* ここにカウンター値を入れています */
        LoRaWAN.endPacket();
        counter++;                                          /* 送信カウンター インクリメント */
    }
}
 
void setup( void )
{
    Serial.begin(9600);
 
    while (!Serial) { }
 
    LoRaWAN.begin(AS923);
    // LoRaWAN.setSubBand(2);                               /* 元々コメントアウト */
    // LoRaWAN.setDutyCycle(false);                         /* 元々コメントアウト */
    // LoRaWAN.setAntennaGain(2.0);                         /* 元々コメントアウト */
    LoRaWAN.joinABP(devAddr, nwkSKey, appSKey);
 
    Serial.println("JOIN( )");
    transmitTimer.start(transmitCallback, 0, Interval);
}
 
void loop( void )
{
}

    int               _joinOTAA(LoRaWANCommissioning *commissioning);
    int               _joinABP(LoRaWANCommissioning *commissioning);
    int               _rejoinOTAA();
    int               _rejoinABP();    bool              _send();

int LoRaWANClass::joinABP(const char *devAddr, const char *nwkSKey, const char *appSKey)
{
    LoRaWANCommissioning commissioning;
    uint8_t DevAddr[4];
 
    if (!_Band) {
        return 0;
    }
 
    if (!ConvertString((uint8_t*)&DevAddr, 4, devAddr)) {
        return 0;
    }
 
    commissioning.DevAddr = (DevAddr[0] << 24) | (DevAddr[1] << 16) | (DevAddr[2] << 8) | (DevAddr[3] << 0);
 
    if (!ConvertString(commissioning.NwkSKey, 16, nwkSKey)) {
        return 0;
    }
 
    if (!ConvertString(commissioning.AppSKey, 16, appSKey)) {
        return 0;
    }
 
    return _joinABP(&commissioning);
}
 
int LoRaWANClass::rejoinABP()
{
    if (!_Band) {
        return 0;
    }
 
    if (_session.Activation != LORAWAN_ACTIVATION_ABP) {
        return 0;
    }
 
    return _rejoinABP();
}