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145	145	* the last line return is what will be used for MQTT
146	146	* User can use other language ,not limited to Lua, just make sure the return is what you want to send.
147	147
148		-
149		-
150	150	== 2.2 Downstream ==
151	151
152	152	In LG308, we can create a file in the directory /var/iot/push for downstream purpose. We recommend using each command to generate this file. This file will be used for transmission and auto-deleted after used
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153	153
154	154	The file should use below format:
155	155
156		-(% style="color:#037691" %)**dev_addr,imme/time,txt/hex,payload**
	154	+**(% style="color:#037691" %)dev_addr,imme/time,txt/hex,payload**
157	157
158	158	Since fimware > Dragino-v2 lgw-5.4.1608518541 . Support more option
159	159
160		-(% style="color:#037691" %)**dev_addr,imme/time,txt/hex,payload,txpw,txbw,SF,frequency,rxwindow**
	158	+**(% style="color:#037691" %)dev_addr,imme/time,txt/hex,payload,txpw,txbw,SF,frequency,rxwindow**
161	161
162	162	* dev_addr: Inptu the device address
163	163	* imme/time:
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182	182	* Old version: echo 018193F4,imme,hex,0101 > /var/iot/push/test
183	183	* New version: echo 018193F4,imme,hex,0101,20,1,SF12,923300000,2 > /var/iot/push/test
184	184
	183	+**(% style="color:#037691" %)Downstream Frequency**
185	185
186		-(% style="color:#037691" %)**Downstream Frequency**
187		-
188	188	The LG308 will use the RX2 window info to send the downstream payload, use the default LoRaWAN settings, as below:
189	189
190	190	* EU868: 869.525Mhz, DR0(SF12BW125)
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196	196	* IN865: 866.55Mhz, SF10 BW125
197	197	* RU864: 869.1Mhz, SF12 BW125
198	198
199		-
200	200	(% style="color:#037691" %)**Examples:**
201	201
202	202	(% class="box" %)
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233	233	[5767501]rxDone
234	234	Rssi= -41
235	235	Receive data
236		-(% style="color:#037691" %)**2:12345678**  (%%) ~-~-> Hex
	232	+2:12345678    ~-~-> Hex
237	237	)))
238	238
239	239	(% class="box" %)
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249	249	[5958595]rxDone
250	250	Rssi= -37
251	251	Receive data
252		-(% style="color:#037691" %)**2:3132333435363738**(%%) ~-~-> ASCII string "12345678"
	248	+2:3132333435363738 ~-~-> ASCII string "12345678"
253	253	)))
254	254
255		-
256	256	= 3. Example 1: Communicate with LT-22222-L =
257	257
258	258	Script can be download from: [[Example Script 1>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_Gateway/LPS8/Firmware/customized_script/&file=talk_to_lt-22222-l_v0.1.sh]]
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297	297
298	298	~1. Input keys
299	299
300		-[[image:image-20220527162450-3.png]]
	295	+[[image:https://wiki.dragino.com/images/thumb/b/bf/LPS8_LT-22222_1.png/600px-LPS8_LT-22222_1.png||height="335" width="600"]]
301	301
302	302	Input Keys in LPS8
303	303
304		-
305	305	2. Make sure the LPS8 and LT use the same frequency bands, choose EU868 in this test.
306	306
307	307	3. Choose Built-in server
308	308
309		-[[image:image-20220527162518-4.png]]
	303	+[[image:https://wiki.dragino.com/images/thumb/d/d7/LPS8_LT-22222_2.png/600px-LPS8_LT-22222_2.png||height="264" width="600"]]
310	310
311	311	Choose Built-in server
312	312
313		-
314	314	4. Run the script.
315	315
316	316	[[image:https://wiki.dragino.com/images/thumb/3/39/LPS8_LT-22222_3.png/600px-LPS8_LT-22222_3.png||height="389" width="600"]]

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