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Xiaoling 134.2 1
Xiaoling 87.2 2
Xiaoling 87.13 3 **Table of Contents:**
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Edwin Chen 1.1 5 {{toc/}}
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Edwin Chen 6.1 8
Xiaoling 87.2 9 = 1.  LA66 LoRaWAN Module =
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11 == 1.1  What is LA66 LoRaWAN Module ==
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Xiaoling 87.15 14 (((
Xiaoling 100.2 15 (((
16 [[image:image-20220719093358-2.png||height="145" width="220"]](% style="color:blue" %)** **
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Edwin Chen 88.2 18
Xiaoling 100.2 19 (((
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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 (((
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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 (((
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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 (((
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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 87.2 64 == 1.3  Specification ==
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Xiaoling 137.6 66
Edwin Chen 68.1 67 * CPU: 32-bit 48 MHz
68 * Flash: 256KB
69 * RAM: 64KB
Edwin Chen 66.1 70 * Input Power Range: 1.8v ~~ 3.7v
71 * Power Consumption: < 4uA.
72 * Frequency Range: 150 MHz ~~ 960 MHz
73 * Maximum Power +22 dBm constant RF output
74 * High sensitivity: -148 dBm
75 * Temperature:
76 ** Storage: -55 ~~ +125℃
77 ** Operating: -40 ~~ +85℃
78 * Humidity:
79 ** Storage: 5 ~~ 95% (Non-Condensing)
80 ** Operating: 10 ~~ 95% (Non-Condensing)
81 * LoRa Tx Current: <90 mA at +17 dBm, 108 mA at +22 dBm
82 * LoRa Rx current: <9 mA
83 * I/O Voltage: 3.3v
Edwin Chen 1.1 84
Xiaoling 87.2 85 == 1.4  AT Command ==
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Xiaoling 98.2 87
Xiaoling 162.6 88 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/scl/fi/3mll5vn9wd446wuk7fwtn/LA66-AT-commands.pdf?rlkey=webesgp6himl162wnx7xssqa1&dl=0]].
Edwin Chen 1.1 89
Xiaoling 87.2 90 == 1.5  Dimension ==
Edwin Chen 3.1 91
Xiaoling 146.3 92
Xiaoling 98.2 93 [[image:image-20220718094750-3.png]]
Edwin Chen 3.1 94
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Xiaoling 87.2 96 == 1.6  Pin Mapping ==
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Xiaoling 101.2 98 [[image:image-20220720111850-1.png]]
Xiaoling 87.2 99
Edwin Chen 5.1 100
Xiaoling 87.2 101 == 1.7  Land Pattern ==
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Xiaoling 137.6 103
Edwin Chen 5.1 104 [[image:image-20220517072821-2.png]]
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Xiaoling 146.3 107 = 2.  FAQ =
Edwin Chen 6.1 108
Xiaoling 149.2 109 == 2.1  Where to find examples of how to use LA66? ==
Xiaoling 87.2 110
Xiaoling 149.2 111
Edwin Chen 149.1 112 (% class="wikigeneratedid" %)
113 Below products are made by LA66. User can use their examples as reference:
Edwin Chen 90.1 114
Xiaoling 149.2 115 * [[LA66 Shield for Arduino>>doc:Main.User Manual for LoRaWAN End Nodes.LA66 LoRaWAN Shield User Manual.WebHome]]
116 * [[LA66 USB Adapter>>doc:Main.User Manual for LoRaWAN End Nodes.LA66 USB LoRaWAN Adapter User Manual.WebHome]]
Edwin Chen 149.1 117
Xiaoling 149.2 118 == 2.2  How to Compile Source Code for LA66? ==
Edwin Chen 149.1 119
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Edwin Chen 147.1 121 Compile and Upload Code to ASR6601 Platform：[[Instruction>>Compile and Upload Code to ASR6601 Platform]]
Xiaoling 137.2 122
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Xiaoling 149.2 124 == 2.3  Can i use LA66 module's internal I/O without external MCU, So to save product cost? ==
Xiaoling 137.2 125
Xiaoling 148.2 126
Edwin Chen 147.1 127 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.
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Edwin Chen 149.1 130 == 2.4  Where to find Peer-to-Peer firmware of LA66? ==
Xiaoling 148.4 131
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133 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]]
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Edwin Chen 150.1 136 == 2.5 How can i use J-LInk to debug LA66? ==
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Xiaoling 162.2 139 (% style="color:#037691" %)**The steps are as follows:**
Edwin Chen 150.1 140
Xiaoling 162.2 141
142 (% style="color:blue" %)**1. Install J-Link software from**
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144 [[https:~~/~~/www.segger.com/downloads/jlink/>>url:https://www.segger.com/downloads/jlink/]]
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147 (% style="color:blue" %)**2. Expose PA6 / PA7 / RSTN of LA66.**
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Xiaoling 162.4 150 [[image:image-20230605151850-1.png||height="676" width="640"]]
Xiaoling 162.2 151
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153 [[image:image-20230605151850-2.png]]
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Xiaoling 162.4 155 (% style="display:none" %) (%%)
Xiaoling 162.2 156
157 (% style="color:blue" %)**3. Connect JLINK, and switch mother board SW1 to ISP. Wire connection as below:**
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Xiaoling 162.4 159
Xiaoling 162.2 160 **LA66 PA6 < ~-~- > JLINK SWDIO (Pin 7)**
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162 **LA66 PA7 < ~-~- > JLINK SWCLK (Pin 9)**
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164 **LA66 RSTN < ~-~- > JLINK RESET (Pin 15)**
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166 **LA66 GND  < ~-~- > JLINK GND (Pin 8)**
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168 [[image:image-20230605151850-3.png||height="629" width="1182"]]
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170 (% style="display:none" %) (%%)
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172 (% style="color:blue" %)**4. Copy \SN50v3\tools\FLM\ASR6601.FLM to \Keil\ARM\ Flash\**
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174 (% style="display:none" %) [[image:image-20230605151850-4.png]]
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Xiaoling 162.3 177 **Add ASR6601 256KB Flash to Flash Download**
Xiaoling 162.2 178
179 [[image:image-20230605152412-12.png]]
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182 [[image:image-20230605151851-6.png]]
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185 (% style="color:blue" %)**5. Modify \SN50v3\Projects\Applications\DRAGINO-LRWAN-AT\cfg\gcc.ld, to 0x08000000.**
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Xiaoling 162.3 187
Xiaoling 162.2 188 [[image:image-20230605151851-7.png]]
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190 [[image:image-20230605151851-8.png]]
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Xiaoling 162.3 193 (% 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 162.2 194
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196 (% style="color:blue" %)**6. Comment the low power function in main.c.**
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199 [[image:image-20230605151851-9.png]]
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202 (% style="color:blue" %)**Click Debug mode to debug.**
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204 [[image:image-20230605151851-10.png||height="293" width="1275"]]
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207 [[image:image-20230605151851-11.png||height="739" width="1275"]](% style="display:none" %)
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209 (% style="display:none" %) (%%)
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Xiaoling 146.3 211 = 3.  Order Info =
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Xiaoling 146.3 214 **Part Number:**  (% style="color:blue" %)**LA66-XXX**
Xiaoling 87.4 215
Xiaoling 87.5 216 (% style="color:blue" %)**XXX**(%%): The default frequency band
Edwin Chen 86.1 217
Xiaoling 87.5 218 * (% style="color:red" %)**AS923**(%%):  LoRaWAN AS923 band
219 * (% style="color:red" %)**AU915**(%%):  LoRaWAN AU915 band
220 * (% style="color:red" %)**EU433**(%%):  LoRaWAN EU433 band
221 * (% style="color:red" %)**EU868**(%%):  LoRaWAN EU868 band
222 * (% style="color:red" %)**KR920**(%%):  LoRaWAN KR920 band
223 * (% style="color:red" %)**US915**(%%):  LoRaWAN US915 band
224 * (% style="color:red" %)**IN865**(%%):  LoRaWAN IN865 band
225 * (% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
226 * (% style="color:red" %)**PP**(%%):  Peer to Peer LoRa Protocol
Edwin Chen 73.1 227
Xiaoling 148.6 228 = 4.  FCC Statement =
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Xiaoling 148.7 231 (% style="color:red" %)**FCC Caution:**
Xiaoling 148.6 232
233 Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
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235 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.
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Xiaoling 148.7 238 (% style="color:red" %)**IMPORTANT NOTE: **
Xiaoling 148.6 239
Xiaoling 148.7 240 (% 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 148.6 241
242 —Reorient or relocate the receiving antenna.
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244 —Increase the separation between the equipment and receiver.
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246 —Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
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248 —Consult the dealer or an experienced radio/TV technician for help.
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Xiaoling 148.7 251 (% style="color:red" %)**FCC Radiation Exposure Statement: **
Xiaoling 148.6 252
253 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 149.3 254
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