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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	+
148	148	== 2.2 Downstream ==
149	149
150	150	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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151	151
152	152	The file should use below format:
153	153
154		-**(% style="color:#037691" %)dev_addr,imme/time,txt/hex,payload**
	156	+(% style="color:#037691" %)**dev_addr,imme/time,txt/hex,payload**
155	155
156	156	Since fimware > Dragino-v2 lgw-5.4.1608518541 . Support more option
157	157
158		-**(% style="color:#037691" %)dev_addr,imme/time,txt/hex,payload,txpw,txbw,SF,frequency,rxwindow**
	160	+(% style="color:#037691" %)**dev_addr,imme/time,txt/hex,payload,txpw,txbw,SF,frequency,rxwindow**
159	159
160	160	* dev_addr: Inptu the device address
161	161	* imme/time:
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180	180	* Old version: echo 018193F4,imme,hex,0101 > /var/iot/push/test
181	181	* New version: echo 018193F4,imme,hex,0101,20,1,SF12,923300000,2 > /var/iot/push/test
182	182
183		-**(% style="color:#037691" %)Downstream Frequency**
184	184
	186	+(% style="color:#037691" %)**Downstream Frequency**
	187	+
185	185	The LG308 will use the RX2 window info to send the downstream payload, use the default LoRaWAN settings, as below:
186	186
187	187	* EU868: 869.525Mhz, DR0(SF12BW125)
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193	193	* IN865: 866.55Mhz, SF10 BW125
194	194	* RU864: 869.1Mhz, SF12 BW125
195	195
	199	+
196	196	(% style="color:#037691" %)**Examples:**
197	197
198	198	(% class="box" %)
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229	229	[5767501]rxDone
230	230	Rssi= -41
231	231	Receive data
232		-2:12345678    ~-~-> Hex
	236	+(% style="color:#037691" %)**2:12345678**  (%%) ~-~-> Hex
233	233	)))
234	234
235	235	(% class="box" %)
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245	245	[5958595]rxDone
246	246	Rssi= -37
247	247	Receive data
248		-2:3132333435363738 ~-~-> ASCII string "12345678"
	252	+(% style="color:#037691" %)**2:3132333435363738**(%%) ~-~-> ASCII string "12345678"
249	249	)))
250	250
	255	+
251	251	= 3. Example 1: Communicate with LT-22222-L =
252	252
253	253	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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292	292
293	293	~1. Input keys
294	294
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"]]
	300	+[[image:image-20220527162450-3.png]]
296	296
297	297	Input Keys in LPS8
298	298
	304	+
299	299	2. Make sure the LPS8 and LT use the same frequency bands, choose EU868 in this test.
300	300
301	301	3. Choose Built-in server
302	302
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"]]
	309	+[[image:image-20220527162518-4.png]]
304	304
305	305	Choose Built-in server
306	306
	313	+
307	307	4. Run the script.
308	308
309		-[[image:https://wiki.dragino.com/images/thumb/3/39/LPS8_LT-22222_3.png/600px-LPS8_LT-22222_3.png||height="389" width="600"]]
	316	+[[image:image-20220527162552-5.png]]
310	310
311	311	Run the script
312	312
	320	+
313	313	5. Output:
314	314
315		-[[image:https://wiki.dragino.com/images/thumb/f/fe/LPS8_LT-22222_4.png/600px-LPS8_LT-22222_4.png||height="433" width="600"]]
	323	+[[image:image-20220527162619-6.png]]
316	316
317	317	Output from LPS8
318	318

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