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Wiki source code of LA66 LoRaWAN Module

Version 65.1 by Edwin Chen on 2022/07/02 23:30
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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 == Features ==
20
21
22 == Specification ==
23
24 [[image:image-20220517072526-1.png]]
25
26 Input Power Range: 1.8v ~~ 3.7v
27
28 Power Consumption: < 4uA.
29
30 Frequency Range: 150 MHz ~~ 960 MHz
31
32 Maximum Power +22 dBm constant RF output
33
34 High sensitivity: -148 dBm
35
36 Temperature:
37
38 * Storage: -55 ~~ +125℃
39 * Operating: -40 ~~ +85℃
40
41 Humidity:
42
43 * Storage: 5 ~~ 95% (Non-Condensing)
44 * Operating: 10 ~~ 95% (Non-Condensing)
45
46 LoRa Tx Current: <90 mA at +17 dBm, 108 mA at +22 dBm
47
48 LoRa Rx current: <9 mA
49
50 I/O Voltage: 3.3v
51
52
53 == AT Command ==
54
55 AT Command is valid over Main TXD and Main RXD. Serial Baud Rate is 9600. AT commands can be found in AT Command documents.
56
57
58 == Pin Mapping ==
59
60 [[image:image-20220523101537-1.png]]
61
62 == Land Pattern ==
63
64 [[image:image-20220517072821-2.png]]
65
66
67 == Part Number ==
68
69 Part Number: **LA66-XXX**
70
71 **XX**: The default frequency band
72
73 * **AS923**: LoRaWAN AS923 band
74 * **AU915**: LoRaWAN AU915 band
75 * **EU433**: LoRaWAN EU433 band
76 * **EU868**: LoRaWAN EU868 band
77 * **KR920**: LoRaWAN KR920 band
78 * **US915**: LoRaWAN US915 band
79 * **IN865**: LoRaWAN IN865 band
80 * **CN470**: LoRaWAN CN470 band
81
82 = LA66 LoRaWAN Shield =
83
84 LA66 LoRaWAN Shield is the Arduino Breakout PCB to fast test the features of LA66 module and turn Arduino to support LoRaWAN.
85
86 == Pin Mapping & LED ==
87
88 == Example: Use AT Command to communicate with LA66 module via Arduino UNO. ==
89
90 == Example: Join TTN network and send an uplink message, get downlink message. ==
91
92 == Example: Log Temperature Sensor(DHT11) and send data to TTN, show it in DataCake. ==
93
94 == Upgrade Firmware of LA66 LoRaWAN Shield ==
95
96 === what needs to be used ===
97
98 1.LA66 LoRaWAN Shield that needs to be upgraded
99
100 2.Arduino
101
102 3.USB TO TTL
103
104 [[image:image-20220602100052-2.png]]
105
106 === Wiring Schematic ===
107
108 [[image:image-20220602101311-3.png]]
109
110 LA66 LoRaWAN Shield  >>>>>>>>>>>>USB TTL
111
112 GND  >>>>>>>>>>>>GND
113
114 TXD  >>>>>>>>>>>>TXD
115
116 RXD  >>>>>>>>>>>>RXD
117
118 JP6 of LA66 LoRaWAN Shield needs to be connected with yellow jumper cap
119
120 Connect to the PC after connecting the wires
121
122 [[image:image-20220602102240-4.png]]
123
124 === Upgrade steps ===
125
126 ==== Dial the SW1 of the LA66 LoRaWAN Shield to the ISP's location as shown in the figure below ====
127
128 [[image:image-20220602102824-5.png]]
129
130 ==== Press the RST switch on the LA66 LoRaWAN Shield once ====
131
132 [[image:image-20220602104701-12.png]]
133
134 ==== Open the upgrade application software ====
135
136 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/]]
137
138 [[image:image-20220602103227-6.png]]
139
140 [[image:image-20220602103357-7.png]]
141
142 ===== Select the COM port corresponding to USB TTL =====
143
144 [[image:image-20220602103844-8.png]]
145
146 ===== Select the bin file to burn =====
147
148 [[image:image-20220602104144-9.png]]
149
150 [[image:image-20220602104251-10.png]]
151
152 [[image:image-20220602104402-11.png]]
153
154 ===== Click to start the download =====
155
156 [[image:image-20220602104923-13.png]]
157
158 ===== The following figure appears to prove that the burning is in progress =====
159
160 [[image:image-20220602104948-14.png]]
161
162 ===== The following picture appears to prove that the burning is successful =====
163
164 [[image:image-20220602105251-15.png]]
165
166 = LA66 USB LoRaWAN Adapter =
167
168 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.
169
170 Before use, please make sure that the computer has installed the CP2102 driver
171
172 == Pin Mapping & LED ==
173
174 == Example Send & Get Messages via LoRaWAN in PC ==
175
176 Connect the LA66 LoRa Shield to the PC
177
178 [[image:image-20220602171217-1.png||height="615" width="915"]]
179
180 Open the serial port tool
181
182 [[image:image-20220602161617-8.png]]
183
184 [[image:image-20220602161718-9.png||height="529" width="927"]]
185
186 Press the reset switch RST on the LA66 LoRa Shield.
187
188 The following picture appears to prove that the LA66 LoRa Shield successfully entered the network
189
190 [[image:image-20220602161935-10.png]]
191
192 send instructions: AT+SENDB=<confirn_status>,<Fport>,<data_len>,<data>
193
194 example: AT+SENDB=01,02,8,05820802581ea0a5
195
196 [[image:image-20220602162157-11.png]]
197
198 Check to see if TTN received the message
199
200 [[image:image-20220602162331-12.png||height="547" width="1044"]]
201
202 == Example Send & Get Messages via LoRaWAN in RPi ==
203
204 Connect the LA66 LoRa Shield to the RPI
205
206 [[image:image-20220602171233-2.png||height="592" width="881"]]
207
208 Log in to the RPI's terminal and connect to the serial port
209
210 [[image:image-20220602153146-3.png]]
211
212 Press the reset switch RST on the LA66 LoRa Shield.
213 The following picture appears to prove that the LA66 LoRa Shield successfully entered the network
214
215 [[image:image-20220602154928-5.png]]
216
217 send instructions: AT+SENDB=<confirn_status>,<Fport>,<data_len>,<data>
218
219 example: AT+SENDB=01,02,8,05820802581ea0a5
220
221 [[image:image-20220602160339-6.png]]
222
223 Check to see if TTN received the message
224
225 [[image:image-20220602160627-7.png||height="468" width="1013"]]
226
227 === Install Minicom ===
228
229 Enter the following command in the RPI terminal
230
231 apt update
232
233 [[image:image-20220602143155-1.png]]
234
235 apt install minicom
236
237 [[image:image-20220602143744-2.png]]
238
239 === Send PC's CPU/RAM usage to TTN via script. ===
240
241 ==== Take python as an example： ====
242
243 ===== Preconditions: =====
244
245 1.LA66 USB LoRaWAN Adapter works fine
246
247 2.LA66 USB LoRaWAN Adapter  is registered with TTN
248
249 ===== Steps for usage =====
250
251 1.Press the reset switch RESET on the LA66 USB LoRaWAN Adapter
252
253 2.Run the script and see the TTN
254
255 [[image:image-20220602115852-3.png]]
256
257
258
259 == Example: LA66 USB Module got a message from LA66 LoRa Shield and send the sensor data to NodeRed. ==
260
261
262 == Upgrade Firmware of LA66 USB LoRaWAN Adapter ==
263
264