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  • LoRa_Shield_Sketch_For_MQTT.ino
  • arduino-LoRa-master.zip
  • image-20221101160705-1.png

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1		-XWiki.Kilight
	1	+XWiki.Edwin

LoRa_Shield_Sketch_For_MQTT.ino

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1		-XWiki.Kilight

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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		-

arduino-LoRa-master.zip

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1		-XWiki.Kilight

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image-20221101160705-1.png

Author

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1		-XWiki.Kilight

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Content