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Heltec-Aaron-LeeHeltec-Aaron-Lee
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Add LoRa communication example
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‎examples/LoRa/LoRaPingpongTimeoutRetransmissionOLED/LoRaPingpongTimeoutRetransmissionOLED.ino‎

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/*
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* HelTec Automation(TM) LoRaWAN 1.0.2 OTAA example use OTAA, CLASS A
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*
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* Function summary:
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*
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* - use internal RTC(150KHz);
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*
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* - Include stop mode and deep sleep mode;
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*
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* - 15S data send cycle;
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*
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* - Informations output via serial(115200);
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*
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* - Only ESP32 + LoRa series boards can use this library, need a license
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* to make the code run(check you license here: http://www.heltec.cn/search/);
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*
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* You can change some definition in "Commissioning.h" and "LoRaMac-definitions.h"
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*
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* HelTec AutoMation, Chengdu, China.
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* 成都惠利特自动化科技有限公司
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* https://heltec.org
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* [email protected]
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*
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*this project also release in GitHub:
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*https://github.com/HelTecAutomation/ESP32_LoRaWAN
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*/
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#include <ESP32_LoRaWAN.h>
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#include "Arduino.h"
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#define RF_FREQUENCY 868000000 // Hz
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#define TX_OUTPUT_POWER 15 // dBm
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#define LORA_BANDWIDTH 0 // [0: 125 kHz,
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// 1: 250 kHz,
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// 2: 500 kHz,
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// 3: Reserved]
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#define LORA_SPREADING_FACTOR 7 // [SF7..SF12]
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#define LORA_CODINGRATE 1 // [1: 4/5,
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// 2: 4/6,
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// 3: 4/7,
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// 4: 4/8]
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#define LORA_PREAMBLE_LENGTH 8 // Same for Tx and Rx
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#define LORA_SYMBOL_TIMEOUT 0 // Symbols
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#define LORA_FIX_LENGTH_PAYLOAD_ON false
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#define LORA_IQ_INVERSION_ON false
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#define RX_TIMEOUT_VALUE 1000
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#define BUFFER_SIZE 30 // Define the payload size here
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char txpacket[BUFFER_SIZE];
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char rxpacket[BUFFER_SIZE];
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char Repacket[BUFFER_SIZE];
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static RadioEvents_t RadioEvents;
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void OnTxDone( void );
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void OnTxTimeout( void );
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void OnRxDone( uint8_t *payload, uint16_t size, int16_t rssi, int8_t snr );
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void OnRxTimeout(void);
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void displayMcuInit();
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void displaySendReceive();
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typedef enum
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{
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STATUS_LOWPOWER,
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STATUS_RX,
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STATUS_TX
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}States_t;
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int16_t txNumber;
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States_t state;
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bool sleepMode = false;
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int16_t Rssi,rxSize;
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uint32_t license[4] = {0xD5397DF0, 0x8573F814, 0x7A38C73D, 0x48E68607};
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// Add your initialization code here
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void setup()
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{
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displayMcuInit();
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Serial.begin(115200);
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while (!Serial);
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SPI.begin(SCK,MISO,MOSI,SS);
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Mcu.init(SS,RST_LoRa,DIO0,DIO1,license);
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txNumber=0;
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Rssi=0;
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RadioEvents.TxDone = OnTxDone;
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RadioEvents.TxTimeout = OnTxTimeout;
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RadioEvents.RxDone = OnRxDone;
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RadioEvents.RxTimeout = OnRxTimeout;
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Radio.Init( &RadioEvents );
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Radio.SetChannel( RF_FREQUENCY );
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Radio.SetTxConfig( MODEM_LORA, TX_OUTPUT_POWER, 0, LORA_BANDWIDTH,
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LORA_SPREADING_FACTOR, LORA_CODINGRATE,
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LORA_PREAMBLE_LENGTH, LORA_FIX_LENGTH_PAYLOAD_ON,
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true, 0, 0, LORA_IQ_INVERSION_ON, 3000 );
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Radio.SetRxConfig( MODEM_LORA, LORA_BANDWIDTH, LORA_SPREADING_FACTOR,
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LORA_CODINGRATE, 0, LORA_PREAMBLE_LENGTH,
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LORA_SYMBOL_TIMEOUT, LORA_FIX_LENGTH_PAYLOAD_ON,
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0, true, 0, 0, LORA_IQ_INVERSION_ON, true );
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state=STATUS_TX;
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}
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void loop()
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{
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switch(state)
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{
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case STATUS_TX:
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delay(1000);
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txNumber++;
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sprintf(txpacket,"%s","hello");
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sprintf(txpacket+strlen(txpacket),"%d",txNumber);
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sprintf(txpacket+strlen(txpacket),"%s"," Rssi : ");
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sprintf(txpacket+strlen(txpacket),"%d",Rssi);
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Serial.printf("\r\nsending packet \"%s\" , length %d\r\n",txpacket, strlen(txpacket));
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Radio.Send( (uint8_t *)txpacket, strlen(txpacket) );
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state=STATUS_LOWPOWER;
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break;
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case STATUS_RX:
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Serial.println("into RX mode");
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Radio.Rx( 5000 );
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state=STATUS_LOWPOWER;
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break;
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case STATUS_LOWPOWER:
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LoRaWAN.sleep(CLASS_C,0);
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break;
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default:
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break;
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}
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}
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void OnTxDone( void )
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{
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Serial.print("TX done......");
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sprintf(Repacket,"%s","");
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displaySendReceive();
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state=STATUS_RX;
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}
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void OnTxTimeout( void )
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{
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Radio.Sleep( );
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Serial.print("TX Timeout......");
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sprintf(Repacket,"%s","TX Timeout,Retransmission");
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displaySendReceive();
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state=STATUS_TX;
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}
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void OnRxDone( uint8_t *payload, uint16_t size, int16_t rssi, int8_t snr )
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{
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Rssi=rssi;
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rxSize=size;
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memcpy(rxpacket, payload, size );
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rxpacket[size]='\0';
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Radio.Sleep( );
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Serial.printf("\r\nreceived packet \"%s\" with Rssi %d , length %d\r\n",rxpacket,Rssi,rxSize);
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Serial.println("wait to send next packet");
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sprintf(Repacket,"%s","");
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displaySendReceive();
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state=STATUS_TX;
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}
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void OnRxTimeout( void )
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{
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Radio.Sleep( );
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Serial.print("RX Timeout......");
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sprintf(Repacket,"%s","RX Timeout,Retransmission");
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displaySendReceive();
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state=STATUS_TX;
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}
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void displayMcuInit()
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{
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Display.wakeup();
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Display.init();
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delay(100);
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Display.flipScreenVertically();
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Display.setFont(ArialMT_Plain_10);
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Display.setTextAlignment(TEXT_ALIGN_LEFT);
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Display.clear();
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Display.drawString(18, 11, "ESP32_PINGPONG");
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Display.drawString(40, 31, "STARTING");
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Display.display();
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delay(100);
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Display.clear();
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}
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void displaySendReceive()
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{
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Display.drawString(0,0,"sending packet:");
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Display.drawString(0,11,(String)txpacket);
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Display.drawString(0,25,(String)Repacket);
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Display.drawString(0,40,"received packet:" );
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Display.drawString(0,51,(String)rxpacket);
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Display.display();
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delay(100);
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Display.clear();
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}

‎examples/LoRa/LoRaPingpongTimeoutRetransmissionOLED/images.h‎

Lines changed: 102 additions & 0 deletions
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#ifndef IMAGES_H
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#define IMAGES_H
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#define logo_width 128
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#define logo_height 53
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const static char logo_bits[] = {
7+
8+
0x00, 0x00, 0x38, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
9+
0x00, 0x00, 0x00, 0x00, 0x70, 0x00, 0xF8, 0x00, 0x00, 0x00, 0x00, 0x00,
10+
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xE0, 0x01, 0xF0, 0x03,
11+
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
12+
0xC0, 0x07, 0xF0, 0x07, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
13+
0x00, 0x00, 0x00, 0x00, 0xC0, 0x0F, 0xF0, 0x0F, 0x00, 0x00, 0x00, 0x00,
14+
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xC0, 0x1F, 0xF0, 0x1F,
15+
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
16+
0xE0, 0x1F, 0xF0, 0x1F, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
17+
0x00, 0x00, 0x00, 0x00, 0xE0, 0x3F, 0xF8, 0x3F, 0x00, 0x00, 0x00, 0x00,
18+
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xE0, 0x1F, 0xF8, 0x3F,
19+
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
20+
0xE0, 0x1F, 0xF8, 0x3F, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
21+
0x00, 0x00, 0x00, 0x00, 0xF0, 0x1F, 0xF8, 0x1F, 0x00, 0x00, 0x00, 0x00,
22+
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xF0, 0x1F, 0xFC, 0x1F,
23+
0x80, 0xFF, 0x8F, 0x7F, 0xC0, 0xFF, 0x7F, 0xC0, 0xFF, 0x03, 0xC0, 0x3F,
24+
0xF0, 0x1F, 0xFC, 0x1F, 0xE0, 0xFF, 0x87, 0x3F, 0xC0, 0xFF, 0x7F, 0xF0,
25+
0xFF, 0x01, 0xF8, 0xFF, 0xF0, 0x0F, 0xFC, 0x1F, 0xE0, 0xFF, 0x87, 0x3F,
26+
0xE0, 0xFF, 0x7F, 0xF8, 0xFF, 0x01, 0xFE, 0xFF, 0xF8, 0x0F, 0xFE, 0x0F,
27+
0xF0, 0xFF, 0x87, 0x3F, 0xE0, 0xFF, 0x7F, 0xFC, 0xFF, 0x01, 0xFF, 0xFF,
28+
0xF8, 0xFF, 0xFF, 0x0F, 0xF0, 0xFF, 0xC7, 0x3F, 0xE0, 0xFF, 0x3F, 0xFC,
29+
0xFF, 0x81, 0xFF, 0xFF, 0xF8, 0xFF, 0xFF, 0x0F, 0xF0, 0xFF, 0xC3, 0x1F,
30+
0xE0, 0xFF, 0x3F, 0xFC, 0xFF, 0xC0, 0xFF, 0x7F, 0xFC, 0xFF, 0xFF, 0x0F,
31+
0xF8, 0xFF, 0xC3, 0x1F, 0xE0, 0xFF, 0x3F, 0xFC, 0xFF, 0xE0, 0xFF, 0x7F,
32+
0xFC, 0xFF, 0xFF, 0x07, 0xF8, 0x03, 0xC0, 0x1F, 0x00, 0xFE, 0x01, 0xFE,
33+
0x00, 0xF0, 0x3F, 0x70, 0xFC, 0xFF, 0xFF, 0x07, 0xF8, 0x03, 0xE0, 0x0F,
34+
0x00, 0xFE, 0x00, 0xFE, 0x00, 0xF0, 0x1F, 0x60, 0xFC, 0xFF, 0xFF, 0x07,
35+
0xF8, 0x03, 0xE0, 0x0F, 0x00, 0xFE, 0x00, 0xFE, 0x00, 0xF0, 0x07, 0x20,
36+
0xFE, 0xFF, 0xFF, 0x07, 0xFC, 0xFF, 0xE1, 0x0F, 0x00, 0xFF, 0x00, 0xFF,
37+
0x7F, 0xF8, 0x07, 0x00, 0xFE, 0x83, 0xFF, 0x03, 0xFC, 0xFF, 0xF1, 0x0F,
38+
0x00, 0x7F, 0x00, 0xFF, 0x7F, 0xF8, 0x03, 0x00, 0xFE, 0x83, 0xFF, 0x03,
39+
0xFC, 0xFF, 0xF0, 0x07, 0x00, 0x7F, 0x00, 0xFF, 0x7F, 0xFC, 0x03, 0x00,
40+
0xFE, 0x81, 0xFF, 0x03, 0xFC, 0xFF, 0xF0, 0x07, 0x00, 0x7F, 0x00, 0xFF,
41+
0x3F, 0xFC, 0x03, 0x00, 0xFF, 0xC1, 0xFF, 0x01, 0xFE, 0xFF, 0xF0, 0x07,
42+
0x80, 0x3F, 0x80, 0xFF, 0x3F, 0xFC, 0x03, 0x00, 0xFF, 0xC1, 0xFF, 0x01,
43+
0xFE, 0xFF, 0xF8, 0x07, 0x80, 0x3F, 0x80, 0xFF, 0x3F, 0xFC, 0x03, 0x10,
44+
0xFF, 0xC1, 0xFF, 0x01, 0xFE, 0x00, 0xF8, 0x03, 0x80, 0x3F, 0x80, 0x3F,
45+
0x00, 0xFC, 0x03, 0x0C, 0xFF, 0xC0, 0xFF, 0x01, 0xFF, 0x00, 0xF8, 0x03,
46+
0xC0, 0x3F, 0x80, 0x3F, 0x00, 0xFC, 0x07, 0x0E, 0xFF, 0xE0, 0xFF, 0x00,
47+
0x7F, 0x00, 0xF8, 0x03, 0xC0, 0x1F, 0xC0, 0x3F, 0x00, 0xFC, 0xFF, 0x0F,
48+
0xFF, 0xE0, 0xFF, 0x00, 0xFF, 0x7F, 0xFC, 0xFF, 0xC1, 0x1F, 0xC0, 0xFF,
49+
0x1F, 0xFC, 0xFF, 0x0F, 0x7F, 0xE0, 0xFF, 0x00, 0xFF, 0x3F, 0xFC, 0xFF,
50+
0xC1, 0x1F, 0xC0, 0xFF, 0x0F, 0xF8, 0xFF, 0x07, 0x7E, 0xE0, 0xFF, 0x80,
51+
0xFF, 0x3F, 0xFC, 0xFF, 0xE0, 0x1F, 0xC0, 0xFF, 0x0F, 0xF8, 0xFF, 0x07,
52+
0x7C, 0xF0, 0x7F, 0x80, 0xFF, 0x3F, 0xFE, 0xFF, 0xE0, 0x0F, 0xE0, 0xFF,
53+
0x0F, 0xF0, 0xFF, 0x07, 0xF8, 0xF0, 0x7F, 0x80, 0xFF, 0x1F, 0xFE, 0xFF,
54+
0xE0, 0x0F, 0xE0, 0xFF, 0x0F, 0xE0, 0xFF, 0x07, 0xE0, 0xF0, 0x7F, 0x80,
55+
0xFF, 0x1F, 0xFE, 0xFF, 0xE0, 0x0F, 0xE0, 0xFF, 0x07, 0x80, 0xFF, 0x03,
56+
0x00, 0xF0, 0x7F, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
57+
0x00, 0x00, 0x3C, 0x00, 0x00, 0xF8, 0x3F, 0x00, 0x00, 0x00, 0x00, 0x00,
58+
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xF8, 0x3F, 0x00,
59+
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
60+
0x00, 0xF8, 0x3F, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
61+
0x00, 0x00, 0x00, 0x00, 0x00, 0xFC, 0x1F, 0x00, 0x8F, 0xF7, 0xFF, 0x7C,
62+
0xBC, 0xC7, 0xF3, 0xFF, 0xFC, 0xBC, 0x07, 0x00, 0x00, 0xFC, 0x1F, 0x00,
63+
0x8F, 0x73, 0xFF, 0xFE, 0xBE, 0xC7, 0xFB, 0xFF, 0xFE, 0xBD, 0x03, 0x00,
64+
0x00, 0xFC, 0x1F, 0x80, 0x8F, 0x73, 0xFF, 0xEF, 0xFE, 0xE7, 0xFB, 0x77,
65+
0xEF, 0xFD, 0x03, 0x00, 0x00, 0xFC, 0x1F, 0x80, 0xDF, 0x7B, 0x9C, 0xE7,
66+
0xFE, 0xF7, 0xE3, 0x71, 0xE7, 0xFD, 0x03, 0x00, 0x00, 0xFC, 0x0F, 0xC0,
67+
0xDF, 0x79, 0x9E, 0xE3, 0xFE, 0xF3, 0xE3, 0x78, 0xE7, 0xFF, 0x03, 0x00,
68+
0x00, 0xFC, 0x0F, 0xE0, 0xDF, 0x39, 0x8E, 0xF3, 0xFF, 0xFB, 0xE7, 0xF8,
69+
0xE7, 0xFE, 0x01, 0x00, 0x00, 0xFC, 0x0F, 0xE0, 0xDF, 0x3F, 0x8E, 0x7F,
70+
0xFF, 0xFF, 0xE7, 0x38, 0x7F, 0xEE, 0x01, 0x00, 0x00, 0xF8, 0x0F, 0x70,
71+
0xDC, 0x1F, 0x0E, 0x3F, 0xFF, 0x9D, 0xF7, 0x38, 0x3F, 0xEF, 0x01, 0x00,
72+
0x00, 0xF8, 0x0F, 0x00, 0x00, 0x03, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00,
73+
0x08, 0x00, 0x00, 0x00, 0x00, 0xF0, 0x07, 0x00, 0x00, 0x00, 0x00, 0x00,
74+
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xE0, 0x0F, 0x00,
75+
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
76+
0x00, 0x80, 0x0F, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
77+
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1E, 0x00, 0x00, 0x00, 0x00, 0x00,
78+
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, };
79+
80+
const char activeSymbol[] PROGMEM = {
81+
B00000000,
82+
B00000000,
83+
B00011000,
84+
B00100100,
85+
B01000010,
86+
B01000010,
87+
B00100100,
88+
B00011000
89+
};
90+
91+
const char inactiveSymbol[] PROGMEM = {
92+
B00000000,
93+
B00000000,
94+
B00000000,
95+
B00000000,
96+
B00011000,
97+
B00011000,
98+
B00000000,
99+
B00000000
100+
};
101+
102+
#endif

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