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1		-XWiki.Bei
	1	+XWiki.Xiaoling

Content

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33	33	)))|(% style="width:409px" %)[[Hardware Connection Photo>>||anchor="H3.1.3RS485-BL2FLDDS752FLDDS202FLSE01"]]|(% style="width:204px" %)[[Hardware Connect Photo>>||anchor="H4.1.4RS485-BL2FLDDS752FLDDS202FLSE01"]]
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	+
	37	+
36	36	= 3. UART Upgrade Guide =
37	37
38	38	== 3.1 Hardware Connection ==
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63	63
64	64	(% style="color:#4472c4" %) **For UART Update, need:**
65	65
66		-* Connect USB-TTL TXD  <~-~-> Device UART_RX
67		-* Connect USB-TTL RXD  <~-~-> Device UART_TX
68		-* Connect USB-TTL GND <~-~-> Device GND
69		-* Put Switch SW1 to ISP position
70		-* Connect JP2 jumper (Yellow one), so device is power on.
	68	+* **Connect USB-TTL TXD  <~-~-> Device UART_RX**
	69	+* **Connect USB-TTL RXD  <~-~-> Device UART_TX**
	70	+* **Connect USB-TTL GND <~-~-> Device GND**
	71	+* **Put Switch SW1 to ISP position**
	72	+* **Connect JP2 jumper (Yellow one), so device is power on.**
71	71
	74	+
	75	+
72	72	== 3.2 Upgrade Steps ==
73	73
74	74
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137	137	1. If you use Windows10 system. Please change the flash loader to run in Windows7 compatibility mode.
138	138	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.
139	139
	144	+
	145	+
140	140	== 3.4 Flash Loader ~-~- Unable to Load data from this file ==
141	141
142	142
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180	180	[[image:image-20220526174518-13.png]]
181	181
182	182
183		-Connection to LGT92
	189	+**Connection to (% style="color:blue" %)LGT92(%%)**
184	184
185		-* ST-LINK v2 5.0v  <~-~->  Dupont Cable red pin
186		-* ST-LINK v2 GND  <~-~->  Dupont Cable black pin
187		-* ST-LINK v2 SWCLK  <~-~->  Dupont Cable green pin
188		-* ST-LINK v2 SWDIO  <~-~->  Dupont Cable white pin
	191	+* **ST-LINK v2 5.0v  <~-~->  Dupont Cable red pin**
	192	+* **ST-LINK v2 GND  <~-~->  Dupont Cable black pin**
	193	+* **ST-LINK v2 SWCLK  <~-~->  Dupont Cable green pin**
	194	+* **ST-LINK v2 SWDIO  <~-~->  Dupont Cable white pin**
189	189
	196	+
	197	+
190	190	=== 4.1.3 LAQ4 ST-Link v2 Connection ===
191	191
192	192
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203	203	Connection for RS485-BL base mother board
204	204
205	205
206		-When use ST-Link v2 to update, need:
	214	+**When use (% style="color:blue" %)ST-Link v2(%%) to update, need:**
207	207
208		-* ST-LINK v2 RESET  <~-~->  NRST
209		-* ST-LINK v2 GND  <~-~->  GND
210		-* ST-LINK v2 SWCLK  <~-~->  SWCLK
211		-* ST-LINK v2 SWDIO  <~-~->  SWDIO
212		-* ST-LINK (VDD 3.3v,pin19)  <~-~->  ST-LINK (TVCC ,pin1) a wire to connect two pins of ST-Link together.
	216	+* **ST-LINK v2 RESET  <~-~->  NRST**
	217	+* **ST-LINK v2 GND  <~-~->  GND**
	218	+* **ST-LINK v2 SWCLK  <~-~->  SWCLK**
	219	+* **ST-LINK v2 SWDIO  <~-~->  SWDIO**
	220	+* **ST-LINK (VDD 3.3v,pin19)  <~-~->  ST-LINK (TVCC ,pin1) a wire to connect two pins of ST-Link together.**
213	213
	222	+
	223	+
214	214	=== 4.1.5 LTC2 ===
215	215
216	216
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221	221
222	222	**Connection:**
223	223
224		-* ST-LINK v2 GND  <~-~->  LTC2 GND
225		-* ST-LINK v2 RESET  <~-~->  LTC2 NRST
226		-* ST-LINK v2 SWCLK  <~-~->  LTC2 SWCLK
227		-* ST-LINK v2 SWDIO  <~-~->  LTC2 SWDIO
228		-* ST-LINK (VDD 3.3v,pin19)  <~-~->  ST-LINK (TVCC ,pin1) a wire to connect two pins of ST-Link together.
	234	+* **ST-LINK v2 GND  <~-~->  LTC2 GND**
	235	+* **ST-LINK v2 RESET  <~-~->  LTC2 NRST**
	236	+* **ST-LINK v2 SWCLK  <~-~->  LTC2 SWCLK**
	237	+* **ST-LINK v2 SWDIO  <~-~->  LTC2 SWDIO**
	238	+* **ST-LINK (VDD 3.3v,pin19)  <~-~->  ST-LINK (TVCC ,pin1) a wire to connect two pins of ST-Link together.**
229	229
	240	+
	241	+
230	230	= 4.2. Firmware upgrade using STM32 Cubeprogramer =
231	231
232	232
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341	341
342	342	== 5. Other Method ==
343	343
	356	+
344	344	ST-Link v2 Upgrade Guide
345	345
346	346