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1		-XWiki.Xiaoling
	1	+XWiki.Bei

Content

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34	34	|(% style="width:284px" %)[[LTC2>>url:https://www.dragino.com/products/temperature-humidity-sensor/item/170-ltc2.html]]|(% style="width:409px" %)×|(% style="width:204px" %)[[Hardware Connect Photo>>||anchor="H4.1.5LTC2"]]
35	35
36	36
37		-
38	38	= 3. UART Upgrade Guide =
39	39
40	40	== 3.1 Hardware Connection ==
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76	76	* **Connect JP2 jumper (Yellow one), so device is power on.**
77	77
78	78
79		-
80	80	== 3.2 Upgrade Steps ==
81	81
82	82
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197	197	* **ST-LINK v2 SWDIO  <~-~->  Dupont Cable white pin**
198	198
199	199
200		-
201	201	=== 4.1.3 LAQ4 ST-Link v2 Connection ===
202	202
203	203
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227	227	* **ST-LINK (VDD 3.3v,pin19)  <~-~->  ST-LINK (TVCC ,pin1) a wire to connect two pins of ST-Link together.**
228	228
229	229
230		-
231	231	=== 4.1.5 LTC2 ===
232	232
233	233
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249	249	* **ST-LINK (VDD 3.3v,pin19)  <~-~->  ST-LINK (TVCC ,pin1) a wire to connect two pins of ST-Link together.**
250	250
251	251
252		-
253	253	= 4.2. Firmware upgrade using STM32 Cubeprogramer =
254	254
255	255
256		-(% style="color:blue" %)**Step1:**(%%) Enter the download interface
	251	+(% style="color:blue" %)**Step1:**(%%) download [[STM32 Cubeprogramer>>https://www.st.com/en/development-tools/stm32cubeprog.html#get-software]]
257	257
	253	+(% style="color:blue" %)**Step2:**(%%) Enter the download interface
	254	+
258	258	[[image:image-20230222160658-1.png||height="479" width="827"]]
259	259
260	260
261		-(% style="color:blue" %)**Step2:**(%%) Connect serial port correctly and select UART/ST-LINK
	258	+(% style="color:blue" %)**Step3:**(%%) Connect serial port correctly and select UART/ST-LINK
262	262
263	263	[[image:image-20230222160847-2.png||height="481" width="830"]]
264	264
265	265
266		-(% style="color:blue" %)**Step3: **(%%)Select the file to download
	263	+(% style="color:blue" %)**Step4: **(%%)Select the file to download
267	267
268	268	[[image:image-20230222160947-3.png||height="473" width="818"]]
269	269
270	270
271		-(% style="color:blue" %)**Step4: **(%%)Click to start programming, and wait for it to download to 100%, pop up a successful download box
	268	+(% style="color:blue" %)**Step5: **(%%)Click to start programming, and wait for it to download to 100%, pop up a successful download box
272	272
273	273	[[image:image-20230222161119-4.png||height="476" width="821"]]
274	274