Changes for page LG01v2 -- LoRa Gateway User Manual
Last modified by Kilight Cao on 2024/10/12 08:58
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Uploaded new attachment "LoRa_Shield_Sketch_For_MQTT.ino", version {1}
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- LoRa_Shield_Sketch_For_MQTT.ino
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... ... @@ -1,0 +1,118 @@ 1 +#include <SPI.h> 2 +#include <LoRa.h> 3 + 4 +// This is the LoRa Node side sketch for the MQTT example: http://wiki.dragino.com/index.php?title=MQTT_Forward_Instruction#Example_to_communicate_to_a_simple_MQTT_server 5 + 6 +float tem,hum; 7 +char tem_1[8]={"\0"},hum_1[8]={"\0"}; 8 +char *node_id = "<4567>"; //From LG01 via web Local Channel settings on MQTT.Please refer <> dataformat in here. 9 +uint8_t datasend[36]; 10 +unsigned int count = 1; 11 +unsigned long new_time,old_time=0; 12 + 13 +void setup() 14 +{ 15 + Serial.begin(9600); 16 + while (!Serial); 17 + Serial.println(F("Start MQTT Example")); 18 + if (!LoRa.begin(868100000)) //868000000 is frequency 19 + { 20 + Serial.println("Starting LoRa failed!"); 21 + while (1); 22 + } 23 + // Setup Spreading Factor (6 ~ 12) 24 + LoRa.setSpreadingFactor(12); 25 + 26 + // Setup BandWidth, option: 7800,10400,15600,20800,31250,41700,62500,125000,250000,500000 27 + //Lower BandWidth for longer distance. 28 + LoRa.setSignalBandwidth(125000); 29 + 30 + // Setup Coding Rate:5(4/5),6(4/6),7(4/7),8(4/8) 31 + LoRa.setCodingRate4(5); 32 + LoRa.setSyncWord(0x12); 33 + void disableCrc(); 34 + LoRa.disableInvertIQ(); 35 + LoRa.explicitHeaderMode(); 36 + Serial.println("LoRa init succeeded."); 37 + LoRa.onReceive(onReceive); 38 + LoRa.receive(); 39 +} 40 + 41 +void dhtTem() 42 +{ 43 + tem = random(15,40); 44 + hum = random(40,80); 45 + Serial.println(F("The temperature and humidity:")); 46 + Serial.print("["); 47 + Serial.print(tem); 48 + Serial.print("℃"); 49 + Serial.print(","); 50 + Serial.print(hum); 51 + Serial.print("%"); 52 + Serial.print("]"); 53 + Serial.println(""); 54 +} 55 +void dhtWrite() 56 +{ 57 + char data[50] = "\0"; 58 + //for(int i = 0; i < 50; i++) 59 + //{ 60 + // data[i] = node_id[i]; 61 + //} 62 + 63 + dtostrf(tem,0,1,tem_1); 64 + dtostrf(hum,0,1,hum_1); 65 + 66 + // Serial.println(tem_1); 67 + strcat(data,"tem="); 68 + strcat(data,tem_1); 69 + strcat(data,"&hum="); 70 + strcat(data,hum_1); 71 + strcpy((char *)datasend,data); 72 + 73 + //Serial.println((char *)datasend); 74 + //Serial.println(sizeof datasend); 75 + 76 +} 77 + 78 + 79 +void SendData() 80 +{ 81 + LoRa.beginPacket(); 82 + LoRa.print((char *)datasend); 83 + LoRa.endPacket(); 84 + Serial.println("Packet Sent"); 85 +} 86 + 87 + 88 + 89 +void loop() 90 +{ 91 + new_time=millis(); 92 + if (new_time - old_time >= 30000 || old_time == 0) 93 + { 94 + old_time = new_time; 95 + Serial.print("########### "); 96 + Serial.print("COUNT="); 97 + Serial.print(count); 98 + Serial.println(" ###########"); 99 + count++; 100 + dhtTem(); 101 + dhtWrite(); 102 + SendData(); 103 + LoRa.receive(); 104 + } 105 +} 106 + 107 +void onReceive(int packetSize) { 108 + 109 + // received a packet 110 + Serial.print("Received packet : "); 111 + 112 + // read packet 113 + for (int i = 0; i < packetSize; i++) { 114 + Serial.print((char)LoRa.read()); 115 + } 116 + Serial.print("\n\r"); 117 +} 118 +