<
From version < 39.2 >
edited by Xiaoling
on 2022/08/11 18:03
To version < 39.3 >
edited by Xiaoling
on 2022/08/11 18:05
>
Change comment: There is no comment for this version

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35 35  |(% 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"]]
36 36  
37 37  
38 +
39 +
38 38  = 3. UART Upgrade Guide =
39 39  
40 40  == 3.1 Hardware Connection ==
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93 93  (% style="color:blue" %)**Step 4: **(%%)Set The device into (% style="color:#037691" %)**ISP Mode**(%%). Then Press the (% style="color:#037691" %)**Reset Button**(%%), In the Flash tool, click next and the tool will detect the board type.
94 94  
95 95  
96 -(% style="color:red" %)**Note:** ** ISP Mode can be a switch or a button, depends on the product. The device only need to be in ISP mode when press the reset button for UART Upgrade. So if the device is of a button type ISP mode, user can release the ISP button after press the reset button.**
98 +(% style="color:red" %)**Note:** ** ISP Mode can be a switch or a button, depends on the product. The device only need to be in ISP mode when press the reset button for UART Upgrade. So if the device is of a button type ISP mode, user can release the ISP button after press the reset button.**
97 97  
98 98  
99 99  )))
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146 146  
147 147  
148 148  
149 -
150 150  == 3.4 Flash Loader ~-~- Unable to Load data from this file ==
151 151  
152 152  
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202 202  
203 203  
204 204  
205 -
206 206  === 4.1.3 LAQ4 ST-Link v2 Connection ===
207 207  
208 208  
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230 230  
231 231  
232 232  
233 -
234 234  === 4.1.5 LTC2 ===
235 235  
236 236  
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248 248  
249 249  
250 250  
251 -
252 252  == 4.2 ST-Link Upgrade Guide ==
253 253  
254 254  
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271 271  * Case 1: If your board has the **Reset pin** connect to St-Link ((for example: LSN50v2, LHT65, LAQ4), click the blue global “settings” button on ST-LINK.
272 272  * Case 2: If your board doesn't have reset pin connect to ST-Link, but has a reset button (for example: LGT92). Keep pushing the small reset button on LGT92 and then click the blue global “settings” button on ST-Link utility.
273 273  
272 +
273 +
274 274  [[image:image-20220526175243-19.png]]
275 275  
276 276  Click Global Icon
277 277  
278 278  
279 -(% style="color:blue" %)**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
279 +(% style="color:blue" %)**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.
280 280  
281 +
281 281  [[image:image-20220526175307-20.png]]
282 282  
283 283  Do not click OK, click Cancel
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301 301  1. Make sure see the LED blink on the ST-Link and release the reset button during blinking.
302 302  
303 303  
304 -
305 305  (% style="color:#4f81bd" %)**Possible Issue 2:**
306 306  
307 307  1. There are different version ST-Link v2. The white one as below is the most stable and recommended one.
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308 308  1. The white version ST-Link v2 such as below photo has different hardware version. The original one doesn’t have 3.3v on pin 1/2 and the clone one has 3.3v on pin 1/2. User has to short pin19 (VDD 3.3v) and pin 1/2 (TVCC) for the original one so pin 1/2 has 3.3v power. Otherwise, the original one might have problem to upload firmware to End Node.
309 309  
310 310  
311 -
312 312  [[image:image-20220526175418-21.png]]
313 313  
314 314  ST-Link upload issue
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319 319  1. The ST-Link adapter has issue in the RESET pin. this happens for the LHT65 model where the update request use the reset pin of ST-Link.We see this issue happen in below ST-LINK.
320 320  
321 321  
322 -
323 323  [[image:image-20220526175708-22.png]]
324 324  
325 325  (((
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