Wiki source code of LA66 LoRaWAN Module

Version 66.1 by Edwin Chen on 2022/07/02 23:32
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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 * Input Power Range: 1.8v ~~ 3.7v
25 * Power Consumption: < 4uA.
26 * Frequency Range: 150 MHz ~~ 960 MHz
27 * Maximum Power +22 dBm constant RF output
28 * High sensitivity: -148 dBm
29 * Temperature:
30 ** Storage: -55 ~~ +125℃
31 ** Operating: -40 ~~ +85℃
32 * Humidity:
33 ** Storage: 5 ~~ 95% (Non-Condensing)
34 ** Operating: 10 ~~ 95% (Non-Condensing)
35 * LoRa Tx Current: <90 mA at +17 dBm, 108 mA at +22 dBm
36 * LoRa Rx current: <9 mA
37 * I/O Voltage: 3.3v
38
39
40 == AT Command ==
41
42 AT Command is valid over Main TXD and Main RXD. Serial Baud Rate is 9600. AT commands can be found in AT Command documents.
43
44
45 == Dimension ==
46
47 [[image:image-20220517072526-1.png]]
48
49
50 == Pin Mapping ==
51
52 [[image:image-20220523101537-1.png]]
53
54 == Land Pattern ==
55
56 [[image:image-20220517072821-2.png]]
57
58
59 == Part Number ==
60
61 Part Number: **LA66-XXX**
62
63 **XX**: The default frequency band
64
65 * **AS923**: LoRaWAN AS923 band
66 * **AU915**: LoRaWAN AU915 band
67 * **EU433**: LoRaWAN EU433 band
68 * **EU868**: LoRaWAN EU868 band
69 * **KR920**: LoRaWAN KR920 band
70 * **US915**: LoRaWAN US915 band
71 * **IN865**: LoRaWAN IN865 band
72 * **CN470**: LoRaWAN CN470 band
73
74 = LA66 LoRaWAN Shield =
75
76 LA66 LoRaWAN Shield is the Arduino Breakout PCB to fast test the features of LA66 module and turn Arduino to support LoRaWAN.
77
78 == Pin Mapping & LED ==
79
80 == Example: Use AT Command to communicate with LA66 module via Arduino UNO. ==
81
82 == Example: Join TTN network and send an uplink message, get downlink message. ==
83
84 == Example: Log Temperature Sensor(DHT11) and send data to TTN, show it in DataCake. ==
85
86 == Upgrade Firmware of LA66 LoRaWAN Shield ==
87
88 === what needs to be used ===
89
90 1.LA66 LoRaWAN Shield that needs to be upgraded
91
92 2.Arduino
93
94 3.USB TO TTL
95
96 [[image:image-20220602100052-2.png]]
97
98 === Wiring Schematic ===
99
100 [[image:image-20220602101311-3.png]]
101
102 LA66 LoRaWAN Shield  >>>>>>>>>>>>USB TTL
103
104 GND  >>>>>>>>>>>>GND
105
106 TXD  >>>>>>>>>>>>TXD
107
108 RXD  >>>>>>>>>>>>RXD
109
110 JP6 of LA66 LoRaWAN Shield needs to be connected with yellow jumper cap
111
112 Connect to the PC after connecting the wires
113
114 [[image:image-20220602102240-4.png]]
115
116 === Upgrade steps ===
117
118 ==== Dial the SW1 of the LA66 LoRaWAN Shield to the ISP's location as shown in the figure below ====
119
120 [[image:image-20220602102824-5.png]]
121
122 ==== Press the RST switch on the LA66 LoRaWAN Shield once ====
123
124 [[image:image-20220602104701-12.png]]
125
126 ==== Open the upgrade application software ====
127
128 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/]]
129
130 [[image:image-20220602103227-6.png]]
131
132 [[image:image-20220602103357-7.png]]
133
134 ===== Select the COM port corresponding to USB TTL =====
135
136 [[image:image-20220602103844-8.png]]
137
138 ===== Select the bin file to burn =====
139
140 [[image:image-20220602104144-9.png]]
141
142 [[image:image-20220602104251-10.png]]
143
144 [[image:image-20220602104402-11.png]]
145
146 ===== Click to start the download =====
147
148 [[image:image-20220602104923-13.png]]
149
150 ===== The following figure appears to prove that the burning is in progress =====
151
152 [[image:image-20220602104948-14.png]]
153
154 ===== The following picture appears to prove that the burning is successful =====
155
156 [[image:image-20220602105251-15.png]]
157
158 = LA66 USB LoRaWAN Adapter =
159
160 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.
161
162 Before use, please make sure that the computer has installed the CP2102 driver
163
164 == Pin Mapping & LED ==
165
166 == Example Send & Get Messages via LoRaWAN in PC ==
167
168 Connect the LA66 LoRa Shield to the PC
169
170 [[image:image-20220602171217-1.png||height="615" width="915"]]
171
172 Open the serial port tool
173
174 [[image:image-20220602161617-8.png]]
175
176 [[image:image-20220602161718-9.png||height="529" width="927"]]
177
178 Press the reset switch RST on the LA66 LoRa Shield.
179
180 The following picture appears to prove that the LA66 LoRa Shield successfully entered the network
181
182 [[image:image-20220602161935-10.png]]
183
184 send instructions: AT+SENDB=<confirn_status>,<Fport>,<data_len>,<data>
185
186 example: AT+SENDB=01,02,8,05820802581ea0a5
187
188 [[image:image-20220602162157-11.png]]
189
190 Check to see if TTN received the message
191
192 [[image:image-20220602162331-12.png||height="547" width="1044"]]
193
194 == Example Send & Get Messages via LoRaWAN in RPi ==
195
196 Connect the LA66 LoRa Shield to the RPI
197
198 [[image:image-20220602171233-2.png||height="592" width="881"]]
199
200 Log in to the RPI's terminal and connect to the serial port
201
202 [[image:image-20220602153146-3.png]]
203
204 Press the reset switch RST on the LA66 LoRa Shield.
205 The following picture appears to prove that the LA66 LoRa Shield successfully entered the network
206
207 [[image:image-20220602154928-5.png]]
208
209 send instructions: AT+SENDB=<confirn_status>,<Fport>,<data_len>,<data>
210
211 example: AT+SENDB=01,02,8,05820802581ea0a5
212
213 [[image:image-20220602160339-6.png]]
214
215 Check to see if TTN received the message
216
217 [[image:image-20220602160627-7.png||height="468" width="1013"]]
218
219 === Install Minicom ===
220
221 Enter the following command in the RPI terminal
222
223 apt update
224
225 [[image:image-20220602143155-1.png]]
226
227 apt install minicom
228
229 [[image:image-20220602143744-2.png]]
230
231 === Send PC's CPU/RAM usage to TTN via script. ===
232
233 ==== Take python as an example： ====
234
235 ===== Preconditions: =====
236
237 1.LA66 USB LoRaWAN Adapter works fine
238
239 2.LA66 USB LoRaWAN Adapter  is registered with TTN
240
241 ===== Steps for usage =====
242
243 1.Press the reset switch RESET on the LA66 USB LoRaWAN Adapter
244
245 2.Run the script and see the TTN
246
247 [[image:image-20220602115852-3.png]]
248
249
250
251 == Example: LA66 USB Module got a message from LA66 LoRa Shield and send the sensor data to NodeRed. ==
252
253
254 == Upgrade Firmware of LA66 USB LoRaWAN Adapter ==
255
256

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