Summary

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Author

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1		-XWiki.Bei
	1	+XWiki.Xiaoling

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"]]
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37	37	= 3. UART Upgrade Guide =
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39	39	== 3.1 Hardware Connection ==
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71	71	* Connect JP2 jumper (Yellow one), so device is power on.
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	75	+
74	74	== 3.2 Upgrade Steps ==
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140	140	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.
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	145	+
143	143	== 3.4 Flash Loader ~-~- Unable to Load data from this file ==
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191	191	* ST-LINK v2 SWDIO  <~-~->  Dupont Cable white pin
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	197	+
194	194	=== 4.1.3 LAQ4 ST-Link v2 Connection ===
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216	216	* ST-LINK (VDD 3.3v,pin19)  <~-~->  ST-LINK (TVCC ,pin1) a wire to connect two pins of ST-Link together.
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	223	+
219	219	=== 4.1.5 LTC2 ===
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233	233	* ST-LINK (VDD 3.3v,pin19)  <~-~->  ST-LINK (TVCC ,pin1) a wire to connect two pins of ST-Link together.
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	241	+
236	236	== 4.2 ST-Link Upgrade Guide ==
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