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Wiki source code of LA66 LoRaWAN Module

Version 70.1 by Edwin Chen on 2022/07/02 23:51
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Edwin Chen 1.1 1 {{box cssClass="floatinginfobox" title="**Contents**"}}
2 {{toc/}}
3 {{/box}}
4
Edwin Chen 6.1 5 = LA66 LoRaWAN Module =
Edwin Chen 1.1 6
Edwin Chen 6.1 7 == What is LA66 LoRaWAN Module ==
8
Edwin Chen 65.1 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.
Edwin Chen 1.1 10
Edwin Chen 65.1 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.
Edwin Chen 1.1 12
Edwin Chen 65.1 13 Each LA66 module includes a (% style="color:blue" %)**world-unique OTAA key**(%%) for LoRaWAN registration.
Edwin Chen 1.1 14
Edwin Chen 65.1 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.
Edwin Chen 1.1 16
Edwin Chen 65.1 17 LA66 is equipped with (% style="color:blue" %)**TCXO crystal**(%%) which ensures the module can achieve stable performance in extreme temperatures.
Edwin Chen 1.1 18
Edwin Chen 67.1 19
Edwin Chen 65.1 20 == Features ==
Edwin Chen 64.1 21
Edwin Chen 68.1 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.
Edwin Chen 69.1 28 * AT Command via UART-TTL interface
29 * Firmware upgradable via UART interface
30 * Ultra-long RF range
Edwin Chen 64.1 31
Edwin Chen 67.1 32
Edwin Chen 70.1 33
Edwin Chen 6.1 34 == Specification ==
Edwin Chen 1.1 35
Edwin Chen 68.1 36 * CPU: 32-bit 48 MHz
37 * Flash: 256KB
38 * RAM: 64KB
Edwin Chen 66.1 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
Edwin Chen 1.1 53
Edwin Chen 66.1 54 == AT Command ==
Edwin Chen 1.1 55
Edwin Chen 66.1 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.
Edwin Chen 1.1 57
Edwin Chen 3.1 58
Edwin Chen 66.1 59 == Dimension ==
Edwin Chen 3.1 60
Edwin Chen 66.1 61 [[image:image-20220517072526-1.png]]
Edwin Chen 3.1 62
63
Edwin Chen 6.1 64 == Pin Mapping ==
Edwin Chen 5.1 65
Xiaoling 10.2 66 [[image:image-20220523101537-1.png]]
Edwin Chen 5.1 67
Edwin Chen 6.1 68 == Land Pattern ==
Edwin Chen 5.1 69
70 [[image:image-20220517072821-2.png]]
71
72
Edwin Chen 6.1 73 == Part Number ==
Edwin Chen 5.1 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
Edwin Chen 68.1 87 * **PP**: Peer to Peer LoRa Protocol
Edwin Chen 6.1 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
Edwin Chen 11.1 93 == Pin Mapping & LED ==
Edwin Chen 6.1 94
Edwin Chen 11.1 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
Edwin Chen 13.1 101 == Upgrade Firmware of LA66 LoRaWAN Shield ==
Edwin Chen 11.1 102
Herong Lu 20.1 103 === what needs to be used ===
Edwin Chen 11.1 104
Herong Lu 20.1 105 1.LA66 LoRaWAN Shield that needs to be upgraded
Edwin Chen 13.1 106
Herong Lu 20.1 107 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
Herong Lu 32.1 133 ==== Dial the SW1 of the LA66 LoRaWAN Shield to the ISP's location as shown in the figure below ====
Herong Lu 20.1 134
Herong Lu 32.1 135 [[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
Herong Lu 39.1 143 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
Herong Lu 32.1 145 [[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
Edwin Chen 6.1 173 = LA66 USB LoRaWAN Adapter =
174
Edwin Chen 7.1 175 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
Herong Lu 52.1 177 Before use, please make sure that the computer has installed the CP2102 driver
178
Edwin Chen 14.1 179 == Pin Mapping & LED ==
Edwin Chen 7.1 180
Edwin Chen 11.1 181 == Example Send & Get Messages via LoRaWAN in PC ==
Edwin Chen 7.1 182
Herong Lu 58.1 183 Connect the LA66 LoRa Shield to the PC
184
Herong Lu 61.1 185 [[image:image-20220602171217-1.png||height="615" width="915"]]
Herong Lu 58.1 186
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
Edwin Chen 11.1 209 == Example Send & Get Messages via LoRaWAN in RPi ==
210
Herong Lu 52.1 211 Connect the LA66 LoRa Shield to the RPI
Edwin Chen 12.1 212
Herong Lu 61.1 213 [[image:image-20220602171233-2.png||height="592" width="881"]]
Herong Lu 43.1 214
Herong Lu 52.1 215 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
Edwin Chen 8.1 234 === Install Minicom ===
235
Herong Lu 46.1 236 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
Herong Lu 38.1 246 === Send PC's CPU/RAM usage to TTN via script. ===
Edwin Chen 11.1 247
Herong Lu 38.1 248 ==== Take python as an example： ====
Edwin Chen 11.1 249
Herong Lu 38.1 250 ===== Preconditions: =====
251
Herong Lu 62.1 252 1.LA66 USB LoRaWAN Adapter works fine
Herong Lu 38.1 253
Herong Lu 62.1 254 2.LA66 USB LoRaWAN Adapter  is registered with TTN
Herong Lu 38.1 255
256 ===== Steps for usage =====
257
Herong Lu 62.1 258 1.Press the reset switch RESET on the LA66 USB LoRaWAN Adapter
Herong Lu 38.1 259
260 2.Run the script and see the TTN
261
262 [[image:image-20220602115852-3.png]]
263
264
265
Edwin Chen 11.1 266 == Example: LA66 USB Module got a message from LA66 LoRa Shield and send the sensor data to NodeRed. ==
267
Edwin Chen 13.1 268
269 == Upgrade Firmware of LA66 USB LoRaWAN Adapter ==
Herong Lu 63.1 270
271