Skip to Content
Version 162.3 by Xiaoling on 2023/06/05 15:35
Hide last authors
Xiaoling 134.2 1
Xiaoling 87.2 2
Xiaoling 87.13 3 **Table of Contents:**
4
Edwin Chen 1.1 5 {{toc/}}
6
7
Edwin Chen 6.1 8
Xiaoling 87.2 9 = 1.  LA66 LoRaWAN Module =
10
11 == 1.1  What is LA66 LoRaWAN Module ==
12
13
Xiaoling 87.15 14 (((
Xiaoling 100.2 15 (((
16 [[image:image-20220719093358-2.png||height="145" width="220"]](% style="color:blue" %)** **
17 )))
Edwin Chen 88.2 18
Xiaoling 100.2 19 (((
20
21 )))
22
23 (((
Edwin Chen 65.1 24 (% 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.
Xiaoling 87.15 25 )))
Xiaoling 100.2 26 )))
Edwin Chen 1.1 27
Xiaoling 87.15 28 (((
Xiaoling 100.2 29 (((
Xiaoling 101.4 30 (% style="color:blue" %)**LA66**(%%) is a ready-to-use module that includes the (% style="color:blue" %)**LoRaWAN v1.0.3 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.
Xiaoling 87.15 31 )))
Xiaoling 100.2 32 )))
Edwin Chen 1.1 33
Xiaoling 87.15 34 (((
Xiaoling 100.2 35 (((
Edwin Chen 65.1 36 Each LA66 module includes a (% style="color:blue" %)**world-unique OTAA key**(%%) for LoRaWAN registration.
Xiaoling 87.15 37 )))
Edwin Chen 1.1 38
Xiaoling 87.15 39 (((
Edwin Chen 65.1 40 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.
Xiaoling 87.15 41 )))
Xiaoling 100.2 42 )))
Edwin Chen 1.1 43
Xiaoling 87.15 44 (((
Xiaoling 100.2 45 (((
Edwin Chen 65.1 46 LA66 is equipped with (% style="color:blue" %)**TCXO crystal**(%%) which ensures the module can achieve stable performance in extreme temperatures.
Xiaoling 87.15 47 )))
Xiaoling 100.2 48 )))
Edwin Chen 1.1 49
Edwin Chen 67.1 50
Xiaoling 87.2 51 == 1.2  Features ==
Edwin Chen 64.1 52
Xiaoling 137.6 53
Xiaoling 146.4 54 * Support LoRaWAN v1.0.3 protocol
Edwin Chen 68.1 55 * Support peer-to-peer protocol
56 * TCXO crystal to ensure RF performance on low temperature
57 * SMD Antenna pad and i-pex antenna connector
58 * Available in different frequency LoRaWAN frequency bands.
59 * World-wide unique OTAA keys.
Edwin Chen 69.1 60 * AT Command via UART-TTL interface
61 * Firmware upgradable via UART interface
62 * Ultra-long RF range
Edwin Chen 64.1 63
Xiaoling 162.3 64
65
Xiaoling 87.2 66 == 1.3  Specification ==
67
Xiaoling 137.6 68
Edwin Chen 68.1 69 * CPU: 32-bit 48 MHz
70 * Flash: 256KB
71 * RAM: 64KB
Edwin Chen 66.1 72 * Input Power Range: 1.8v ~~ 3.7v
73 * Power Consumption: < 4uA.
74 * Frequency Range: 150 MHz ~~ 960 MHz
75 * Maximum Power +22 dBm constant RF output
76 * High sensitivity: -148 dBm
77 * Temperature:
78 ** Storage: -55 ~~ +125℃
79 ** Operating: -40 ~~ +85℃
80 * Humidity:
81 ** Storage: 5 ~~ 95% (Non-Condensing)
82 ** Operating: 10 ~~ 95% (Non-Condensing)
83 * LoRa Tx Current: <90 mA at +17 dBm, 108 mA at +22 dBm
84 * LoRa Rx current: <9 mA
85 * I/O Voltage: 3.3v
Edwin Chen 1.1 86
Xiaoling 162.3 87
88
Xiaoling 87.2 89 == 1.4  AT Command ==
90
Xiaoling 98.2 91
Edwin Chen 148.1 92 AT Command is valid over Main TXD and Main RXD. Serial Baud Rate is 9600. AT commands can be found in[[ AT Command documents>>https://www.dropbox.com/sh/wtq43za8sykpgta/AABAEE02uEAsRU-JV7bzEhMba?dl=0]].
Edwin Chen 1.1 93
Edwin Chen 3.1 94
Xiaoling 87.2 95 == 1.5  Dimension ==
Edwin Chen 3.1 96
Xiaoling 146.3 97
Xiaoling 98.2 98 [[image:image-20220718094750-3.png]]
Edwin Chen 3.1 99
100
Xiaoling 87.2 101 == 1.6  Pin Mapping ==
102
Xiaoling 101.2 103 [[image:image-20220720111850-1.png]]
Xiaoling 87.2 104
Edwin Chen 5.1 105
Xiaoling 87.2 106 == 1.7  Land Pattern ==
107
Xiaoling 137.6 108
Edwin Chen 5.1 109 [[image:image-20220517072821-2.png]]
110
111
Xiaoling 146.3 112 = 2.  FAQ =
Edwin Chen 6.1 113
Xiaoling 149.2 114 == 2.1  Where to find examples of how to use LA66? ==
Xiaoling 87.2 115
Xiaoling 149.2 116
Edwin Chen 149.1 117 (% class="wikigeneratedid" %)
118 Below products are made by LA66. User can use their examples as reference:
Edwin Chen 90.1 119
Xiaoling 149.2 120 * [[LA66 Shield for Arduino>>doc:Main.User Manual for LoRaWAN End Nodes.LA66 LoRaWAN Shield User Manual.WebHome]]
121 * [[LA66 USB Adapter>>doc:Main.User Manual for LoRaWAN End Nodes.LA66 USB LoRaWAN Adapter User Manual.WebHome]]
Edwin Chen 149.1 122
Xiaoling 162.3 123
124
Xiaoling 149.2 125 == 2.2  How to Compile Source Code for LA66? ==
Edwin Chen 149.1 126
127
Edwin Chen 147.1 128 Compile and Upload Code to ASR6601 Platform：[[Instruction>>Compile and Upload Code to ASR6601 Platform]]
Xiaoling 137.2 129
130
Xiaoling 149.2 131 == 2.3  Can i use LA66 module's internal I/O without external MCU, So to save product cost? ==
Xiaoling 137.2 132
Xiaoling 148.2 133
Edwin Chen 147.1 134 Yes, this is possible, user can refer[[ the source code from ASR >>https://github.com/asrlora/asr_lora_6601/tree/master/projects/ASR6601SE-EVAL/examples/lora]]to get examples for how to its I/O Interfaces.
135
136
Edwin Chen 149.1 137 == 2.4  Where to find Peer-to-Peer firmware of LA66? ==
Xiaoling 148.4 138
139
140 Instruction for LA66 Peer to Peer firmware :[[ Instruction >>doc:Main.User Manual for LoRaWAN End Nodes.LA66 LoRaWAN Shield User Manual.Instruction for LA66 Peer to Peer firmware.WebHome]]
141
142
Edwin Chen 150.1 143 == 2.5 How can i use J-LInk to debug LA66? ==
144
145
Xiaoling 162.2 146 (% style="color:#037691" %)**The steps are as follows:**
Edwin Chen 150.1 147
Xiaoling 162.2 148
149 (% style="color:blue" %)**1. Install J-Link software from**
150
151 [[https:~~/~~/www.segger.com/downloads/jlink/>>url:https://www.segger.com/downloads/jlink/]]
152
153
154 (% style="color:blue" %)**2. Expose PA6 / PA7 / RSTN of LA66.**
155
156
157 [[image:image-20230605151850-1.png]]
158
159
160 [[image:image-20230605151850-2.png]]
161
162
163 (% style="color:blue" %)**3. Connect JLINK, and switch mother board SW1 to ISP. Wire connection as below:**
164
165 **LA66 PA6 < ~-~- > JLINK SWDIO (Pin 7)**
166
167 **LA66 PA7 < ~-~- > JLINK SWCLK (Pin 9)**
168
169 **LA66 RSTN < ~-~- > JLINK RESET (Pin 15)**
170
171 **LA66 GND  < ~-~- > JLINK GND (Pin 8)**
172
173 [[image:image-20230605151850-3.png||height="629" width="1182"]]
174
175 (% style="display:none" %) (%%)
176
177 (% style="color:blue" %)**4. Copy \SN50v3\tools\FLM\ASR6601.FLM to \Keil\ARM\ Flash\**
178
179 (% style="display:none" %) [[image:image-20230605151850-4.png]]
180
181
Xiaoling 162.3 182 **Add ASR6601 256KB Flash to Flash Download**
Xiaoling 162.2 183
184 [[image:image-20230605152412-12.png]]
185
186
187 [[image:image-20230605151851-6.png]]
188
189
190 (% style="color:blue" %)**5. Modify \SN50v3\Projects\Applications\DRAGINO-LRWAN-AT\cfg\gcc.ld, to 0x08000000.**
191
Xiaoling 162.3 192
Xiaoling 162.2 193 [[image:image-20230605151851-7.png]]
194
195 [[image:image-20230605151851-8.png]]
196
197
Xiaoling 162.3 198 (% style="color:red" %)**Note: After debug, user should change the Flash address back to 0x0800D000, and upload the OTA bootloader to LA66. Otherwise, the compiled program doesn't support OTA update.**
Xiaoling 162.2 199
200
201 (% style="color:blue" %)**6. Comment the low power function in main.c.**
202
203
204 [[image:image-20230605151851-9.png]]
205
206
207 (% style="color:blue" %)**Click Debug mode to debug.**
208
209 [[image:image-20230605151851-10.png||height="293" width="1275"]]
210
211
212 [[image:image-20230605151851-11.png||height="739" width="1275"]](% style="display:none" %)
213
214 (% style="display:none" %) (%%)
215
Xiaoling 146.3 216 = 3.  Order Info =
Xiaoling 137.2 217
218
Xiaoling 146.3 219 **Part Number:**  (% style="color:blue" %)**LA66-XXX**
Xiaoling 87.4 220
Xiaoling 87.5 221 (% style="color:blue" %)**XXX**(%%): The default frequency band
Edwin Chen 86.1 222
Xiaoling 87.5 223 * (% style="color:red" %)**AS923**(%%):  LoRaWAN AS923 band
224 * (% style="color:red" %)**AU915**(%%):  LoRaWAN AU915 band
225 * (% style="color:red" %)**EU433**(%%):  LoRaWAN EU433 band
226 * (% style="color:red" %)**EU868**(%%):  LoRaWAN EU868 band
227 * (% style="color:red" %)**KR920**(%%):  LoRaWAN KR920 band
228 * (% style="color:red" %)**US915**(%%):  LoRaWAN US915 band
229 * (% style="color:red" %)**IN865**(%%):  LoRaWAN IN865 band
230 * (% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
231 * (% style="color:red" %)**PP**(%%):  Peer to Peer LoRa Protocol
Edwin Chen 73.1 232
Xiaoling 162.3 233
234
Xiaoling 148.6 235 = 4.  FCC Statement =
236
237
Xiaoling 148.7 238 (% style="color:red" %)**FCC Caution:**
Xiaoling 148.6 239
240 Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
241
242 This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
243
244
Xiaoling 148.7 245 (% style="color:red" %)**IMPORTANT NOTE: **
Xiaoling 148.6 246
Xiaoling 148.7 247 (% style="color:red" %)**Note:**(%%) This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
Xiaoling 148.6 248
249 —Reorient or relocate the receiving antenna.
250
251 —Increase the separation between the equipment and receiver.
252
253 —Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
254
255 —Consult the dealer or an experienced radio/TV technician for help.
256
257
Xiaoling 148.7 258 (% style="color:red" %)**FCC Radiation Exposure Statement: **
Xiaoling 148.6 259
260 This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment.This equipment should be installed and operated with minimum distance 20cm between the radiator& your body.
Xiaoling 149.3 261
262