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442 442  == **7.1 How does LG01-V2 communicate with Lora shield (LoRa.h)** ==
443 443  
444 444  
445 -This example describes how to use LG01-V2, LoRa Shield to set up a LoRa network
445 +This example describes how to use LG01-V2, LoRa Shield to set up a LoRa network,
446 446  
447 447  [[image:image-20221103152238-8.png||height="251" width="654"]]
448 448  
... ... @@ -484,6 +484,44 @@
484 484  [[image:image-20221101162527-4.png]]
485 485  
486 486  
487 +== **7.2 How does LG01-V2 communicate with Heltec LoRa Node** ==
488 +
489 +
490 +This example describes how to use LG01-V2 and Heltec LoRa Node to set up a LoRa network,
491 +
492 +[[image:image-20221112161111-2.png||height="258" width="692"]]
493 +
494 +(% style="color:red" %)**Prerequisites: The configurations of LG01-V2 and Lora shield must match**
495 +
496 +**LG01-V2 configuration:**
497 +
498 +(% class="box infomessage" %)
499 +(((
500 +AT+FRE=868.100,868.100  ~-~--> TX and RX frequency set: 868100000
501 +AT+BW=0,0  ~-~--> TX and RX Bandwidth set: 125kHz
502 +AT+SF=12,12  ~-~--> TX and RX Spreading Factor set: SF12
503 +AT+POWER=14  ~-~--> TX Power Range
504 +AT+CRC=1,1  ~-~--> TX and RX CRC Type
505 +AT+HEADER=0,0  ~-~--> TX and RX Header Type
506 +AT+CR=1,1  ~-~--> TX and RX Coding Rate
507 +AT+IQ=0,0  ~-~--> TX and RX InvertIQ
508 +AT+PREAMBLE=8,8  ~-~--> TX and RX Preamble Length set: 8
509 +AT+SYNCWORD=0  ~-~-->  Syncword**(0: private，1: public), **the corresponding Lora shield syncword is 0x12
510 +AT+RXMOD=65535,0  ~-~-->  Rx Timeout and Reply mode,RX window always open
511 +AT+RXDAFORM=1  ~-~--> RX data format**（0: Hex ,1: String）**
512 +)))
513 +
514 +After we upload the sketch to Heltec LoRa Node, we can see below output from Arduino.
515 +
516 +Lora Shield example: [[attach:LoRa_send_trial.ino||target="_blank"]]
517 +
518 +[[image:image-20221112162733-3.png||height="524" width="927"]]
519 +
520 +
521 +And we can see the logread of gateway as below, means the packet arrive gateway:
522 +
523 +[[image:image-20221112163119-4.png||height="808" width="560"]]
524 +
487 487  = (% style="color:inherit; font-family:inherit; font-size:29px" %)**8. Supports**(%%) =
488 488  
489 489  
LoRa_send_trial.ino
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1 +#include "LoRaWan_APP.h"
2 +#include "Arduino.h"
3 +
4 +
5 +#define RF_FREQUENCY 868100000 // Hz
6 +
7 +#define TX_OUTPUT_POWER 5 // dBm
8 +
9 +#define LORA_BANDWIDTH 0 // [0: 125 kHz,
10 + // 1: 250 kHz,
11 + // 2: 500 kHz,
12 + // 3: Reserved]
13 +#define LORA_SPREADING_FACTOR 12 // [SF7..SF12]
14 +#define LORA_CODINGRATE 1 // [1: 4/5,
15 + // 2: 4/6,
16 + // 3: 4/7,
17 + // 4: 4/8]
18 +#define LORA_PREAMBLE_LENGTH 8 // Same for Tx and Rx
19 +#define LORA_SYMBOL_TIMEOUT 0 // Symbols
20 +#define LORA_FIX_LENGTH_PAYLOAD_ON false
21 +#define LORA_IQ_INVERSION_ON false
22 +
23 +
24 +#define RX_TIMEOUT_VALUE 1000
25 +#define BUFFER_SIZE 30 // Define the payload size here
26 +
27 +float tem,hum;
28 +char tem_1[8]={"\0"},hum_1[8]={"\0"};
29 +char *node_id = "<GW01>"; //From LG01 via web Local Channel settings on MQTT.Please refer <> dataformat in here.
30 +
31 +char txpacket[BUFFER_SIZE];
32 +char rxpacket[BUFFER_SIZE];
33 +
34 +double txNumber;
35 +
36 +bool lora_idle=true;
37 +
38 +static RadioEvents_t RadioEvents;
39 +void OnTxDone( void );
40 +void OnTxTimeout( void );
41 +
42 +void dhtTem()
43 +{
44 + tem = random(15,40);
45 + hum = random(40,80);
46 + Serial.println(F("The temperature and humidity:"));
47 + Serial.print("[");
48 + Serial.print(tem);
49 + Serial.print("℃");
50 + Serial.print(",");
51 + Serial.print(hum);
52 + Serial.print("%");
53 + Serial.print("]");
54 + Serial.println("");
55 +}
56 +
57 +void dhtWrite()
58 +{
59 + char data[50] = "\0";
60 + for(int i = 0; i < 50; i++)
61 + {
62 + data[i] = node_id[i];
63 + }
64 +
65 + dtostrf(tem,0,1,tem_1);
66 + dtostrf(hum,0,1,hum_1);
67 +
68 + strcat(data,"tem_a=");
69 + strcat(data,tem_1);
70 + strcat(data,"&hum_a=");
71 + strcat(data,hum_1);
72 + strcpy((char *)txpacket,data);
73 +
74 + Serial.println((char *)txpacket);
75 +}
76 +
77 +void setup() {
78 + Serial.begin(115200);
79 + Mcu.begin();
80 +
81 + txNumber=0;
82 +
83 + RadioEvents.TxDone = OnTxDone;
84 + RadioEvents.TxTimeout = OnTxTimeout;
85 +
86 + Radio.Init( &RadioEvents );
87 + Radio.SetChannel( RF_FREQUENCY );
88 + Radio.SetTxConfig( MODEM_LORA, TX_OUTPUT_POWER, 0, LORA_BANDWIDTH,
89 + LORA_SPREADING_FACTOR, LORA_CODINGRATE,
90 + LORA_PREAMBLE_LENGTH, LORA_FIX_LENGTH_PAYLOAD_ON,
91 + true, 0, 0, LORA_IQ_INVERSION_ON, 3000 );
92 + }
93 +
94 +
95 +
96 +void loop()
97 +{
98 + if(lora_idle == true)
99 + {
100 + delay(5000);
101 + txNumber += 0.01;
102 + Serial.println(txNumber);
103 +
104 + dhtTem();
105 + dhtWrite();
106 + Radio.Send( (uint8_t *)txpacket, strlen(txpacket) ); //send the package out
107 + lora_idle = false;
108 + }
109 + Radio.IrqProcess( );
110 +}
111 +
112 +void OnTxDone( void )
113 +{
114 + Serial.println("TX done......");
115 + lora_idle = true;
116 +}
117 +
118 +void OnTxTimeout( void )
119 +{
120 + Radio.Sleep( );
121 + Serial.println("TX Timeout......");
122 + lora_idle = true;
123 +}
124 +
image-20221112162733-3.png
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