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23	23	|(% style="width:444px" %)[[RS485-BL>>url:https://www.dragino.com/products/lora-lorawan-end-node/item/167-rs485-bl.html]], LDDS75,[[LLDS12>>url:https://www.dragino.com/products/distance-level-sensor/item/185-llds12.html]],LDDS20,[[LSE01>>https://www.dragino.com/products/agriculture-weather-station/item/159-lse01.html]],WSC1-L,GroPoint Air|(% style="width:239px" %)[[Hardware Connection Photo>>url:https://wiki.dragino.com/index.php/Firmware_Upgrade_Trouble_Shooting#RS485-BL.2FLDDS75.2FLDDS20.2FLSE01]]|(% style="width:204px" %)[[Hardware Connect Photo>>url:https://wiki.dragino.com/index.php/Firmware_Upgrade_Instruction_for_STM32_base_products#RS485-BL.2FLDDS75.2FLDDS20.2FLSE01_2]]
24	24	|(% style="width:444px" %)[[LTC2>>url:https://www.dragino.com/products/temperature-humidity-sensor/item/170-ltc2.html]]|(% style="width:239px" %)×|(% style="width:204px" %)[[Hardware Connect Photo>>url:https://wiki.dragino.com/index.php/Firmware_Upgrade_Instruction_for_STM32_base_products#LTC2]]
25	25
26		-
27	27	= 3. UART Upgrade Guide =
28	28
29	29	== 3.1 Hardware Connection ==
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30	30
31	31	=== 3.1.1 LSN50 v1 ===
32	32
33		-[[image:image-20220511163746-2.png]]
	32	+[[image:image-20220511163746-2.png||height="322" width="433"]]
34	34
35	35	Connection for LSN50 v1
36	36
37	37	=== 3.1.2 LSN50 v2/LSN50v2-D22/LSN50v2-D23 ===
38	38
39		-[[image:https://wiki.dragino.com/images/thumb/f/f8/STM32_UART_Upgrade_2.png/600px-STM32_UART_Upgrade_2.png||height="291" width="600"]]
	38	+[[image:https://wiki.dragino.com/images/thumb/f/f8/STM32_UART_Upgrade_2.png/600px-STM32_UART_Upgrade_2.png||height="267" width="551"]]
40	40
41	41	Connection for LSN50 Type V2
42	42
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54	54	* Put Switch SW1 to ISP position
55	55	* Connect JP2 jumper (Yellow one), so device is power on.
56	56
57		-
58	58	== 3.2 Upgrade Steps ==
59	59
60	60	(((
...	...	@@ -111,7 +111,6 @@
111	111	1. If you use Windows10 system. Please change the flash loader to run in Windows7 compatibility mode.
112	112	1. We see a case the FT232 USB TTL adapter has reliability issue with the PC USB chipset(Intel). In this case, even above, it still has serious reliability issue for uploading. If this happen, change a PC or change a USB to TTL adapter will solve.
113	113
114		-
115	115	== 3.4 Flash Loader ~-~- Unable to Load data from this file ==
116	116
117	117	[[image:https://wiki.dragino.com/images/9/96/FlashLoader-troube_1.png||height="521" width="399"]]
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149	149	* ST-LINK v2 SWCLK <~-~-> Dupont green pin
150	150	* ST-LINK v2 SWDIO <~-~-> Dupont white pin
151	151
152		-
153	153	=== 4.1.3 LAQ4 ST-Link v2 Connection ===
154	154
155	155	[[image:https://wiki.dragino.com/images/thumb/0/03/STM32_STLINK_Upgrade_LAQ4.png/600px-STM32_STLINK_Upgrade_LAQ4.png||height="331" width="600"]]
...	...	@@ -184,7 +184,6 @@
184	184	* ST-LINK v2 SWCLK <~-~-> LTC2 SWCLK
185	185	* ST-LINK v2 SWDIO <~-~-> LTC2 SWDIO
186	186
187		-
188	188	== 4.2 ST-Link Upgrade Guide ==
189	189
190	190	(((
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210	210
211	211	Click Global Icon
212	212
213		-
	208	+(((
214	214	**Step 5**: After click the Global ICon in Step4, The led on the ST-LINK v2 adapter will now blinks, if you use hand to press the reset button , you need to release the reset button when see the LED blinks, and the ST-Link will detect the STM32 hardware as below. Click cancel to enter next step. Please check hardware connection if ST-Link v2 LED doesn't blink
	210	+)))
215	215
216	216	[[image:https://wiki.dragino.com/images/thumb/2/20/ST-LINK-troube_2.png/600px-ST-LINK-troube_2.png||height="366" width="600"]]
217	217
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232	232
233	233	1. Make sure see the LED blink on the ST-Link and release the reset button during blinking.
234	234
235		-
236	236	Possible Issue 2:
237	237
238	238	1. There are different version ST-Link v2. The white one as below is the most stable and recommended one.
...	...	@@ -249,15 +249,27 @@
249	249
250	250	[[image:https://wiki.dragino.com/images/a/a3/ST-LINK-troube_4.png||height="337" width="406"]]
251	251
	247	+(((
252	252	RESET pin not function
	249	+)))
253	253
254	254	(((
	252	+
	253	+)))
	254	+
	255	+(((
	256	+(((
255	255	User can try to mannual reset when use this type of ST-Link, touch the reset pin to GND pin and click the global icon in the ST Utility, If the other 3 wire connection is fine, the ST-LInk adapter LED will blink. and then release the reset. The IC should be detected.
256	256	)))
	259	+)))
257	257
	261	+(((
258	258	For LHT65 we recommend to use the white one show in possible issue 2.
	263	+)))
259	259
	265	+(((
260	260	For LGT92, if user use this type of ST-Link, please also connect the 5v to USB port of LGT92
	267	+)))
261	261
262	262
263	263	=== 4.3.2 ST-Link v2 detect the hardware but disconnect after click OK ===