serial_esp_lora_oled.ino

#include <ESP32_LoRaWAN.h>
#include "Arduino.h"


/*license for Heltec ESP32 LoRaWan, quary your ChipID relevant license: http://resource.heltec.cn/search */
uint32_t  license[4] = {0xD5397DF0, 0x8573F814, 0x7A38C73D, 0x48E68607};
/* OTAA para*/
uint8_t DevEui[] = { 0x22, 0x32, 0x33, 0x00, 0x00, 0x88, 0x88, 0x02 };
uint8_t AppEui[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
uint8_t AppKey[] = { 0x88, 0x88, 0x88, 0x88, 0x88, 0x88, 0x88, 0x88, 0x88, 0x88, 0x88, 0x88, 0x88, 0x88, 0x66, 0x01 };

/* ABP para*/
uint8_t NwkSKey[] = { 0x15, 0xb1, 0xd0, 0xef, 0xa4, 0x63, 0xdf, 0xbe, 0x3d, 0x11, 0x18, 0x1e, 0x1e, 0xc7, 0xda,0x85 };
uint8_t AppSKey[] = { 0xd7, 0x2c, 0x78, 0x75, 0x8c, 0xdc, 0xca, 0xbf, 0x55, 0xee, 0x4a, 0x77, 0x8d, 0x16, 0xef,0x67 };
uint32_t DevAddr =  ( uint32_t )0x007e6ae1;

/*LoraWan channelsmask, default channels 0-7*/ 
uint16_t userChannelsMask[6]={ 0x00FF,0x0000,0x0000,0x0000,0x0000,0x0000 };

/*LoraWan Class, Class A and Class C are supported*/
DeviceClass_t  loraWanClass = CLASS_C;

/*the application data transmission duty cycle.  value in [ms].*/
uint32_t appTxDutyCycle = 15000;

/*OTAA or ABP*/
bool overTheAirActivation = true;

/*ADR enable*/
bool loraWanAdr = true;

/* Indicates if the node is sending confirmed or unconfirmed messages */
bool isTxConfirmed = true;

/* Application port */
uint8_t appPort = 2;

/*!
* Number of trials to transmit the frame, if the LoRaMAC layer did not
* receive an acknowledgment. The MAC performs a datarate adaptation,
* according to the LoRaWAN Specification V1.0.2, chapter 18.4, according
* to the following table:
*
* Transmission nb | Data Rate
* ----------------|-----------
* 1 (first)       | DR
* 2               | DR
* 3               | max(DR-1,0)
* 4               | max(DR-1,0)
* 5               | max(DR-2,0)
* 6               | max(DR-2,0)
* 7               | max(DR-3,0)
* 8               | max(DR-3,0)
*
* Note, that if NbTrials is set to 1 or 2, the MAC will not decrease
* the datarate, in case the LoRaMAC layer did not receive an acknowledgment
*/
uint8_t confirmedNbTrials = 8;

/*LoraWan debug level, select in arduino IDE tools.
* None : print basic info.
* Freq : print Tx and Rx freq, DR info.
* Freq && DIO : print Tx and Rx freq, DR, DIO0 interrupt and DIO1 interrupt info.
* Freq && DIO && PW: print Tx and Rx freq, DR, DIO0 interrupt, DIO1 interrupt, MCU sleep and MCU wake info.
*/
uint8_t debugLevel = LoRaWAN_DEBUG_LEVEL;

/*LoraWan region, select in arduino IDE tools*/
LoRaMacRegion_t loraWanRegion = ACTIVE_REGION;

//initializing the value to transmit
uint32_t ser;
uint32_t app;

uint32_t readSerial()
{
    //reading from serial
  if (Serial.available()) {
        while (Serial.available() > 0) {
          app=Serial.parseInt();
          Serial.println(ser);
        }
        Serial.flush();
      }
   return app;
}
static void prepareTxFrame( uint8_t port ,uint32_t ser)
{
    appDataSize = 2;//AppDataSize max value is 64
    // Format the data to bytes 
    appData[0] = highByte(ser);
    appData[1] = lowByte(ser);
  
}

String LoRa_data;
String transmit="Start";
uint16_t num=0;
bool LoRaDownLink = false;
uint32_t LoRadonwlinkTime;
void downLinkDataHandle(McpsIndication_t *mcpsIndication)
{
  LoRa_data = ""; 
  Serial.printf("+REV DATA:%s,RXSIZE %d,PORT %d\r\n",mcpsIndication->RxSlot?"RXWIN2":"RXWIN1",mcpsIndication->BufferSize,mcpsIndication->Port);
  Serial.print("+REV DATA:");
  for(uint8_t i=0;i<mcpsIndication->BufferSize;i++)
  {
    Serial.printf("%d",mcpsIndication->Buffer[i]);
    LoRa_data = LoRa_data + (String)(char)mcpsIndication->Buffer[i];
  }
  LoRaDownLink = true;
  LoRadonwlinkTime = millis();
  num++;
  Serial.println();
  Serial.print(num);
  Serial.print(":");
  Serial.println(LoRa_data);

}

// Add your initialization code here
void setup()
{
  if(mcuStarted==0)
  {
    LoRaWAN.displayMcuInit();
  }
  Serial.begin(115200);
  while (!Serial);
  SPI.begin(SCK,MISO,MOSI,SS);
  Mcu.init(SS,RST_LoRa,DIO0,DIO1,license);
  deviceState = DEVICE_STATE_INIT;
  LoRa_data="Start";
}


// The loop function is called in an endless loop
void loop()
{ 
    switch( deviceState )
    {
      case DEVICE_STATE_INIT:
      {
  #if(LORAWAN_DEVEUI_AUTO)
        LoRaWAN.generateDeveuiByChipID();
  #endif
        ser=readSerial();
        if(ser!=0){
          LoRaWAN.init(loraWanClass,loraWanRegion);
        }
        break;
      }
      case DEVICE_STATE_JOIN:
      {
        LoRaWAN.displayJoining();
        LoRaWAN.join();
        break;
      }
      case DEVICE_STATE_SEND:
      {
        if(LoRa_data==transmit){
          LoRaWAN.displaySending();
          prepareTxFrame( appPort , ser);
          LoRaWAN.send(loraWanClass);
         }
         deviceState = DEVICE_STATE_CYCLE;
         break;
      }
      case DEVICE_STATE_CYCLE:
      {
        // Schedule next packet transmission
        txDutyCycleTime = appTxDutyCycle + randr( -APP_TX_DUTYCYCLE_RND, APP_TX_DUTYCYCLE_RND );
        LoRaWAN.cycle(txDutyCycleTime);
        deviceState = DEVICE_STATE_SLEEP;
        break;
      }
      case DEVICE_STATE_SLEEP:
      {
        LoRaWAN.displayAck();
        LoRaWAN.sleep(loraWanClass,debugLevel);
        
        break;
      }
      default:
      {
        deviceState = DEVICE_STATE_INIT;
        break;
      }
    }
}