Wiki source code of LA66 LoRaWAN Module

Version 70.1 by Edwin Chen on 2022/07/02 23:51
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1 {{box cssClass="floatinginfobox" title="**Contents**"}}
2 {{toc/}}
3 {{/box}}
4
5 = LA66 LoRaWAN Module =
6
7 == What is LA66 LoRaWAN Module ==
8
9 (% style="color:blue" %)**Dragino LA66**(%%) is a small wireless LoRaWAN module that offers a very compelling mix of long-range, low power consumption, and secure data transmission. It is designed to facilitate developers to quickly deploy industrial-level LoRaWAN and IoT solutions. It helps users to turn the idea into a practical application and make the Internet of Things a reality. It is easy to create and connect your things everywhere.
10
11 (% style="color:blue" %)**LA66**(%%) is a ready-to-use module that includes the (% style="color:blue" %)**LoRaWAN v1.0.4 protocol**(%%). The LoRaWAN stack used in LA66 is used in more than 1 million LoRaWAN End Devices deployed world widely. This mature LoRaWAN stack greatly reduces the risk to make stable LoRaWAN Sensors to support different LoRaWAN servers and different countries' standards. External MCU can use AT command to call LA66 and start to transmit data via the LoRaWAN protocol.
12
13 Each LA66 module includes a (% style="color:blue" %)**world-unique OTAA key**(%%) for LoRaWAN registration.
14
15 Besides the support of the LoRaWAN protocol, LA66 also supports (% style="color:blue" %)**open-source peer-to-peer LoRa Protocol**(%%) for the none-LoRaWAN application.
16
17 LA66 is equipped with (% style="color:blue" %)**TCXO crystal**(%%) which ensures the module can achieve stable performance in extreme temperatures.
18
19
20 == Features ==
21
22 * Support LoRaWAN v1.0.4 protocol
23 * Support peer-to-peer protocol
24 * TCXO crystal to ensure RF performance on low temperature
25 * SMD Antenna pad and i-pex antenna connector
26 * Available in different frequency LoRaWAN frequency bands.
27 * World-wide unique OTAA keys.
28 * AT Command via UART-TTL interface
29 * Firmware upgradable via UART interface
30 * Ultra-long RF range
31
32
33
34 == Specification ==
35
36 * CPU: 32-bit 48 MHz
37 * Flash: 256KB
38 * RAM: 64KB
39 * Input Power Range: 1.8v ~~ 3.7v
40 * Power Consumption: < 4uA.
41 * Frequency Range: 150 MHz ~~ 960 MHz
42 * Maximum Power +22 dBm constant RF output
43 * High sensitivity: -148 dBm
44 * Temperature:
45 ** Storage: -55 ~~ +125℃
46 ** Operating: -40 ~~ +85℃
47 * Humidity:
48 ** Storage: 5 ~~ 95% (Non-Condensing)
49 ** Operating: 10 ~~ 95% (Non-Condensing)
50 * LoRa Tx Current: <90 mA at +17 dBm, 108 mA at +22 dBm
51 * LoRa Rx current: <9 mA
52 * I/O Voltage: 3.3v
53
54 == AT Command ==
55
56 AT Command is valid over Main TXD and Main RXD. Serial Baud Rate is 9600. AT commands can be found in AT Command documents.
57
58
59 == Dimension ==
60
61 [[image:image-20220517072526-1.png]]
62
63
64 == Pin Mapping ==
65
66 [[image:image-20220523101537-1.png]]
67
68 == Land Pattern ==
69
70 [[image:image-20220517072821-2.png]]
71
72
73 == Part Number ==
74
75 Part Number: **LA66-XXX**
76
77 **XX**: The default frequency band
78
79 * **AS923**: LoRaWAN AS923 band
80 * **AU915**: LoRaWAN AU915 band
81 * **EU433**: LoRaWAN EU433 band
82 * **EU868**: LoRaWAN EU868 band
83 * **KR920**: LoRaWAN KR920 band
84 * **US915**: LoRaWAN US915 band
85 * **IN865**: LoRaWAN IN865 band
86 * **CN470**: LoRaWAN CN470 band
87 * **PP**: Peer to Peer LoRa Protocol
88
89 = LA66 LoRaWAN Shield =
90
91 LA66 LoRaWAN Shield is the Arduino Breakout PCB to fast test the features of LA66 module and turn Arduino to support LoRaWAN.
92
93 == Pin Mapping & LED ==
94
95 == Example: Use AT Command to communicate with LA66 module via Arduino UNO. ==
96
97 == Example: Join TTN network and send an uplink message, get downlink message. ==
98
99 == Example: Log Temperature Sensor(DHT11) and send data to TTN, show it in DataCake. ==
100
101 == Upgrade Firmware of LA66 LoRaWAN Shield ==
102
103 === what needs to be used ===
104
105 1.LA66 LoRaWAN Shield that needs to be upgraded
106
107 2.Arduino
108
109 3.USB TO TTL
110
111 [[image:image-20220602100052-2.png]]
112
113 === Wiring Schematic ===
114
115 [[image:image-20220602101311-3.png]]
116
117 LA66 LoRaWAN Shield  >>>>>>>>>>>>USB TTL
118
119 GND  >>>>>>>>>>>>GND
120
121 TXD  >>>>>>>>>>>>TXD
122
123 RXD  >>>>>>>>>>>>RXD
124
125 JP6 of LA66 LoRaWAN Shield needs to be connected with yellow jumper cap
126
127 Connect to the PC after connecting the wires
128
129 [[image:image-20220602102240-4.png]]
130
131 === Upgrade steps ===
132
133 ==== Dial the SW1 of the LA66 LoRaWAN Shield to the ISP's location as shown in the figure below ====
134
135 [[image:image-20220602102824-5.png]]
136
137 ==== Press the RST switch on the LA66 LoRaWAN Shield once ====
138
139 [[image:image-20220602104701-12.png]]
140
141 ==== Open the upgrade application software ====
142
143 Software download link:  [[https:~~/~~/www.dragino.com/downloads/index.php?dir=LSN50-LoRaST/Utility/LSN50N/>>https://www.dragino.com/downloads/index.php?dir=LSN50-LoRaST/Utility/LSN50N/]]
144
145 [[image:image-20220602103227-6.png]]
146
147 [[image:image-20220602103357-7.png]]
148
149 ===== Select the COM port corresponding to USB TTL =====
150
151 [[image:image-20220602103844-8.png]]
152
153 ===== Select the bin file to burn =====
154
155 [[image:image-20220602104144-9.png]]
156
157 [[image:image-20220602104251-10.png]]
158
159 [[image:image-20220602104402-11.png]]
160
161 ===== Click to start the download =====
162
163 [[image:image-20220602104923-13.png]]
164
165 ===== The following figure appears to prove that the burning is in progress =====
166
167 [[image:image-20220602104948-14.png]]
168
169 ===== The following picture appears to prove that the burning is successful =====
170
171 [[image:image-20220602105251-15.png]]
172
173 = LA66 USB LoRaWAN Adapter =
174
175 LA66 USB LoRaWAN Adapter is the USB Adapter for LA66, it combines a USB TTL Chip and LA66 module which can easy to test the LoRaWAN feature by using PC or embedded device which has USB Interface.
176
177 Before use, please make sure that the computer has installed the CP2102 driver
178
179 == Pin Mapping & LED ==
180
181 == Example Send & Get Messages via LoRaWAN in PC ==
182
183 Connect the LA66 LoRa Shield to the PC
184
185 [[image:image-20220602171217-1.png||height="615" width="915"]]
186
187 Open the serial port tool
188
189 [[image:image-20220602161617-8.png]]
190
191 [[image:image-20220602161718-9.png||height="529" width="927"]]
192
193 Press the reset switch RST on the LA66 LoRa Shield.
194
195 The following picture appears to prove that the LA66 LoRa Shield successfully entered the network
196
197 [[image:image-20220602161935-10.png]]
198
199 send instructions: AT+SENDB=<confirn_status>,<Fport>,<data_len>,<data>
200
201 example: AT+SENDB=01,02,8,05820802581ea0a5
202
203 [[image:image-20220602162157-11.png]]
204
205 Check to see if TTN received the message
206
207 [[image:image-20220602162331-12.png||height="547" width="1044"]]
208
209 == Example Send & Get Messages via LoRaWAN in RPi ==
210
211 Connect the LA66 LoRa Shield to the RPI
212
213 [[image:image-20220602171233-2.png||height="592" width="881"]]
214
215 Log in to the RPI's terminal and connect to the serial port
216
217 [[image:image-20220602153146-3.png]]
218
219 Press the reset switch RST on the LA66 LoRa Shield.
220 The following picture appears to prove that the LA66 LoRa Shield successfully entered the network
221
222 [[image:image-20220602154928-5.png]]
223
224 send instructions: AT+SENDB=<confirn_status>,<Fport>,<data_len>,<data>
225
226 example: AT+SENDB=01,02,8,05820802581ea0a5
227
228 [[image:image-20220602160339-6.png]]
229
230 Check to see if TTN received the message
231
232 [[image:image-20220602160627-7.png||height="468" width="1013"]]
233
234 === Install Minicom ===
235
236 Enter the following command in the RPI terminal
237
238 apt update
239
240 [[image:image-20220602143155-1.png]]
241
242 apt install minicom
243
244 [[image:image-20220602143744-2.png]]
245
246 === Send PC's CPU/RAM usage to TTN via script. ===
247
248 ==== Take python as an example： ====
249
250 ===== Preconditions: =====
251
252 1.LA66 USB LoRaWAN Adapter works fine
253
254 2.LA66 USB LoRaWAN Adapter  is registered with TTN
255
256 ===== Steps for usage =====
257
258 1.Press the reset switch RESET on the LA66 USB LoRaWAN Adapter
259
260 2.Run the script and see the TTN
261
262 [[image:image-20220602115852-3.png]]
263
264
265
266 == Example: LA66 USB Module got a message from LA66 LoRa Shield and send the sensor data to NodeRed. ==
267
268
269 == Upgrade Firmware of LA66 USB LoRaWAN Adapter ==
270
271

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