Last modified by Kilight Cao on 2024/03/04 09:10
<
From version < 101.1 >
edited by Edwin Chen
on 2022/11/14 19:39
To version < 93.1 >
edited by Kilight Cao
on 2022/11/09 15:10
>
Change comment: Uploaded new attachment "Log-Temperature-Sensor-and-send-data-to-node-red.json", version {1}

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283 283  )))
284 284  
285 285  
286 -== **5.2 Example: LG01v2** ==
286 +== **5.2 Example: LG01**-**V2 Peer-to-Peer** ==
287 287  
288 -=== **5.2.1 Introduce for the example:** ===
289 289  
290 290  [[image:image-20221104102736-3.png||height="282" width="723"]]
291 291  
292 292  
293 -In this example, there are two devices:
292 +The user can run the AT command to set the LG01-V2 RX window always open as a Receiver, The LG01-V2 can display the received data in the built-in server Node-Red, Here are the specific steps:
294 294  
295 -* **LA66 Shield + UNO + DHT11**: The UNO will get the temperature and humidity and broadcast the value via LoRa protocol.
296 -* **LG01v2** : LG01v2 is set to listening the LoRa Channel which LA66 is broadcasting. When LG01v2 get the data from LA66, LG01v2 will plot the data in built-in IoT server.
294 +(% style="color:red" %)**Prerequisites: **(%%)The configuration of LG01-V2 and  LA66 Shield must match and the LA66 Shield firmware is **[[LA66 Peer-to-Peer firmware>>http://wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LA66%20LoRaWAN%20Shield%20User%20Manual/Instruction%20for%20LA66%20Peer%20to%20Peer%20firmware/]]**, users can use **AT+CFG** to check all configurations.
297 297  
298 298  
299 -=== 5.2.2 Set Up LA66 Shield + UNO ===
297 +=== **Log Temperature Sensor(DHT11) and send data to LG01-V2, show it in Node-RED.** ===
300 300  
301 301  
302 -==== **Set up LA66 Module** ====
300 +(% style="color:red; font-weight:bold" %)**LG01-V**(% style="color:red" %)**2 as Receiver: (configured as AT+RXMOD=65535,2)**
303 303  
304 -LA66 Module is loaded with the firmware **[[LA66 Peer-to-Peer firmware>>http://wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LA66%20LoRaWAN%20Shield%20User%20Manual/Instruction%20for%20LA66%20Peer%20to%20Peer%20firmware/]] **and user can use AT Command to set up LA66 with below parameters:
305 -
302 +(% class="box infomessage" %)
306 306  (((
304 +**LG01-V2 configuration:**
305 +
306 +AT+FRE=868.100,868.100  ~-~--> TX and RX frequency set: 868100000
307 +AT+BW=0,0  ~-~--> TX and RX Bandwidth set: 125kHz
308 +AT+SF=12,12  ~-~--> TX and RX Spreading Factor set: SF12
309 +AT+POWER=14  ~-~--> TX Power Range set: 14dBm
310 +AT+CRC=1,1  ~-~--> TX and RX CRC Type
311 +AT+HEADER=0,0  ~-~--> TX and RX Header Type
312 +AT+CR=1,1  ~-~--> TX and RX Coding Rate
313 +AT+IQ=0,0  ~-~--> TX and RX InvertIQ
314 +AT+PREAMBLE=8,8  ~-~--> TX and RX Preamble Length set: 8
315 +AT+SYNCWORD=0  ~-~-->  Syncword**(0: private，1: public)**
316 +AT+RXMOD=65535,0  ~-~-->  Rx Timeout and Reply mode, RX window always open
317 +)))
318 +
319 +
307 307  (% style="color:red" %)**LA66 Shield as Sender: **
308 308  
309 309  (% class="box infomessage" %)
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325 325  )))
326 326  
327 327  
328 -==== **Set up Arduino UNO** ====
341 +After the above configuration is complete, users can send test simulation data to check whether the configuration is correct, In LA66 sheild serial console send:(% style="color:red" %)**(AT+SEND=1,hello world,2,3).**
329 329  
330 -(% id="cke_bm_1033249S" style="display:none" %)** **(%%)**Hardware Connection**
343 +When LG01-V2 replies with ACK when it receives a packet sent by LA66 sheild.
331 331  
345 +[[image:image-20221108164413-2.png]]
346 +
347 +
348 +In the real-time log of LG01-V2：
349 +
350 +[[image:image-20221108170314-3.png]]
351 +
352 +
353 +**Hardware Connection**
354 +
332 332  (% class="box infomessage" %)
333 333  (((
334 334  **The DHT11 sensor connects to the LA66 Shield:**
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341 341  [[image:image-20221108170731-5.png||height="588" width="441"]]
342 342  
343 343  
344 -===== **1. Open Arduino IDE** =====
367 +==== **1. Open Arduino IDE** ====
345 345  
346 346  [[image:image-20221108172149-6.png||height="650" width="542"]]
347 347  
348 348  
349 -===== **2. Open project** =====
372 +==== **2. Open project** ====
350 350  
374 +
351 351  Users can download Arduino files from this link: [[attach:Log-Temperature-Sensor-and-send-data-to-Node-red.ino||target="_blank"]]
352 352  
353 353  Then click Compile and Upload to LA66 Shield,
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355 355  [[image:image-20221108172432-7.png]]
356 356  
357 357  
358 -===== **3. Open the Serial Monitor to check the LA66 Shield data** =====
382 +==== **3. Open the Serial Monitor to check the LA66 Shield data** ====
359 359  
360 -The UNO will now reads the temperature and humidity data from the sensor and broadcast it via LoRa wireless,
361 361  
385 +The LA66 Shield reads the temperature and humidity data from the sensor and sends it to LG01-V2,
386 +
362 362  [[image:image-20221108174840-8.png||height="731" width="671"]]
363 363  
364 -
365 -Sending out data as below.
366 -
367 367  [[image:image-20221108175113-9.png||height="556" width="998"]]
368 368  
369 369  
392 +==== **4. Import the flow to the built-in server on LG01-V2** ====
370 370  
371 -=== 5.2.3 Set Up LG01v2 ===
372 372  
395 +Users can import this example in Node-Red: [[attach:Log-Temperature-Sensor-and-send-data-to-node-red.json||target="_blank"]]
373 373  
374 -Configure LG01v2 LoRa channel parameters so it can get data from LA66 Shield
375 -
376 -(% style="color:red; font-weight:bold" %)**LG01v**(% style="color:red" %)**2 as Receiver: (configured as AT+RXMOD=65535,2)**
377 -
378 -(% class="box infomessage" %)
379 -(((
380 -**LG01-V2 configuration:**
381 -
382 -AT+FRE=868.100,868.100  ~-~--> TX and RX frequency set: 868100000
383 -AT+BW=0,0  ~-~--> TX and RX Bandwidth set: 125kHz
384 -AT+SF=12,12  ~-~--> TX and RX Spreading Factor set: SF12
385 -AT+POWER=14  ~-~--> TX Power Range set: 14dBm
386 -AT+CRC=1,1  ~-~--> TX and RX CRC Type
387 -AT+HEADER=0,0  ~-~--> TX and RX Header Type
388 -AT+CR=1,1  ~-~--> TX and RX Coding Rate
389 -AT+IQ=0,0  ~-~--> TX and RX InvertIQ
390 -AT+PREAMBLE=8,8  ~-~--> TX and RX Preamble Length set: 8
391 -AT+SYNCWORD=0  ~-~-->  Syncword**(0: private，1: public)**
392 -AT+RXMOD=65535,0  ~-~-->  Rx Timeout and Reply mode, RX window always open
393 -)))
394 -
395 -
396 -=== 5.2.4 Test result ===
397 -
398 -After the above configuration is complete, users can send test simulation data to check whether the configuration is correct, In LA66 sheild serial console send:(% style="color:red" %)**(AT+SEND=1,hello world,2,3).**
399 -)))
400 -
401 -When LG01v2 replies with ACK when it receives a packet sent by LA66 sheild.
402 -
403 -[[image:image-20221108164413-2.png]]
404 -
405 -
406 -In the real-time log of LG01v2：
407 -
408 -[[image:image-20221108170314-3.png]]
409 -
410 -
411 -=== **5.2.5 Plot data chart in LG01v2** ===
412 -
413 -
414 -User can plot the temperature and humidity chat via LG01v2 built-in IoT server.
415 -
416 -User can import this example in Node-Red: [[attach:Log-Temperature-Sensor-and-send-data-to-node-red.json||target="_blank"]]
417 -
418 418  [[image:image-20221108180334-10.png||height="651" width="1141"]]
419 419  
420 420  
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425 425  [[image:image-20221108180458-11.png||height="402" width="1137"]]
426 426  
427 427  
428 -= (% style="color:inherit; font-family:inherit; font-size:29px" %)**6. How users can access LG01**(%%)**v(% style="color:inherit; font-family:inherit; font-size:29px" %)2 using serial USB(%%)** =
407 += (% style="color:inherit; font-family:inherit; font-size:29px" %)**6. How users can access LG01**(%%)**-V(% style="color:inherit; font-family:inherit; font-size:29px" %)2 using serial USB(%%)** =
429 429  
430 430  
431 431  (% style="color:blue" %)**USB TTL to LG01-V2  Connection:**
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463 463  == **7.1 How does LG01-V2 communicate with Lora shield (LoRa.h)** ==
464 464  
465 465  
466 -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
467 467  
468 468  [[image:image-20221103152238-8.png||height="251" width="654"]]
469 469  
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505 505  [[image:image-20221101162527-4.png]]
506 506  
507 507  
508 -== **7.2 How does LG01-V2 communicate with Heltec LoRa Node** ==
509 -
510 -
511 -This example describes how to use LG01-V2 and Heltec LoRa Node to set up a LoRa network,
512 -
513 -[[image:image-20221112161111-2.png||height="258" width="692"]]
514 -
515 -(% style="color:red" %)**Prerequisites: The configurations of LG01-V2 and Lora shield must match**
516 -
517 -**LG01-V2 configuration:**
518 -
519 -(% class="box infomessage" %)
520 -(((
521 -AT+FRE=868.100,868.100  ~-~--> TX and RX frequency set: 868100000
522 -AT+BW=0,0  ~-~--> TX and RX Bandwidth set: 125kHz
523 -AT+SF=12,12  ~-~--> TX and RX Spreading Factor set: SF12
524 -AT+POWER=14  ~-~--> TX Power Range
525 -AT+CRC=1,1  ~-~--> TX and RX CRC Type
526 -AT+HEADER=0,0  ~-~--> TX and RX Header Type
527 -AT+CR=1,1  ~-~--> TX and RX Coding Rate
528 -AT+IQ=0,0  ~-~--> TX and RX InvertIQ
529 -AT+PREAMBLE=8,8  ~-~--> TX and RX Preamble Length set: 8
530 -AT+SYNCWORD=0  ~-~-->  Syncword**(0: private，1: public), **the corresponding Lora shield syncword is 0x12
531 -AT+RXMOD=65535,0  ~-~-->  Rx Timeout and Reply mode,RX window always open
532 -AT+RXDAFORM=1  ~-~--> RX data format**（0: Hex ,1: String）**
533 -)))
534 -
535 -After we upload the sketch to Heltec LoRa Node, we can see below output from Arduino.
536 -
537 -Lora Shield example: [[attach:LoRa_send_trial.ino||target="_blank"]]
538 -
539 -[[image:image-20221112162733-3.png||height="524" width="927"]]
540 -
541 -
542 -And we can see the logread of gateway as below, means the packet arrive gateway:
543 -
544 -[[image:image-20221112163119-4.png||height="808" width="560"]]
545 -
546 546  = (% style="color:inherit; font-family:inherit; font-size:29px" %)**8. Supports**(%%) =
547 547  
548 548  
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 -
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