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Last modified by Kilight Cao on 2025/07/03 15:34
From version 55.4
edited by Kilight Cao
on 2025/07/03 15:15
Change comment: There is no comment for this version
To version 55.2
edited by Kilight Cao
on 2025/07/03 15:07
Change comment: There is no comment for this version

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... ... @@ -506,7 +506,6 @@
506 506  
507 507  
508 508  
509 -
510 510  === 3.3.3 AT+MOD~=3, Single DI Counting + 2 x ACI ===
511 511  
512 512  
... ... @@ -545,7 +545,6 @@
545 545  
546 546  
547 547  
548 -
549 549  (((
550 550  **To activate this mode, run the following AT commands:**
551 551  )))
... ... @@ -640,7 +640,6 @@
640 640  
641 641  
642 642  
643 -
644 644  === 3.3.5 AT+MOD~=5, Single DI Counting + 2 x AVI + 1 x ACI ===
645 645  
646 646  
... ... @@ -703,7 +703,6 @@
703 703  
704 704  
705 705  
706 -
707 707  === 3.3.6 AT+ADDMOD~=6 (Trigger Mode, Optional) ===
708 708  
709 709  
... ... @@ -2284,7 +2284,6 @@
2284 2284  
2285 2285  
2286 2286  
2287 -
2288 2288  (% style="color:blue" %)**Example 4**(%%): Connecting to a Dry Contact sensor
2289 2289  
2290 2290  From the DI port circuit above, activating the photocoupler requires a voltage difference between the DI+ and DI- ports. However, the Dry Contact sensor is a passive component and cannot provide this voltage difference on its own.
... ... @@ -2561,29 +2561,55 @@
2561 2561  This section contains some frequently asked questions, which can help you resolve common issues and find solutions quickly.
2562 2562  
2563 2563  
2564 -== 6.1 OTA Firmware update ==
2559 +== 6.1 How to update the firmware? ==
2565 2565  
2566 2566  
2567 -(% class="wikigeneratedid" %)
2568 -User can change firmware LT-22222-LA to:
2562 +Dragino frequently releases firmware updates for the LT-22222-L. Updating your LT-22222-L with the latest firmware version helps to:
2569 2569  
2570 -* Change Frequency band/ region.
2571 -* Update with new features.
2572 -* Fix bugs.
2564 +* Support new features
2565 +* Fix bugs
2566 +* Change LoRaWAN frequency bands
2573 2573  
2574 -Firmware and changelog can be downloaded from : **[[Firmware download link>>https://www.dropbox.com/sh/fis3g6nmhv0eokg/AAC6BcCZaX4BdqZkduUvZ3jIa?dl=0]]**
2568 +You will need the following things before proceeding:
2575 2575  
2570 +* 3.5mm programming cable (included with the LT-22222-L as an additional accessory)
2571 +* USB to TTL adapter/converter
2572 +* Download and install the [[STM32 Flash loader>>url:https://www.st.com/content/st_com/en/products/development-tools/software-development-tools/stm32-software-development-tools/stm32-programmers/flasher-stm32.html]]. (replaced by STM32CubeProgrammer)
2573 +* Download the latest firmware image from [[LT-22222-L firmware image files>>https://www.dropbox.com/sh/g99v0fxcltn9r1y/AACrbrDN0AqLHbBat0ViWx5Da/LT-22222-L/Firmware?dl=0&subfolder_nav_tracking=1]]. Check the file name of the firmware to find the correct region.
2576 2576  
2577 -Methods to Update Firmware:
2575 +{{info}}
2576 +As of this writing, the latest firmware version available for the LT-22222-L is v1.6.1.
2577 +{{/info}}
2578 2578  
2579 -* (Recommanded way) OTA firmware update via wireless : **[[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/Firmware%20OTA%20Update%20for%20Sensors/>>url:http://wiki.dragino.com/xwiki/bin/view/Main/Firmware%20OTA%20Update%20for%20Sensors/]]**
2580 -* Update through UART TTL interface : **[[Instruction>>url:http://wiki.dragino.com/xwiki/bin/view/Main/UART%20Access%20for%20LoRa%20ST%20v4%20base%20model/#H1.LoRaSTv4baseHardware]]**.
2579 +Below is the hardware setup for uploading a firmware image to the LT-22222-L:
2581 2581  
2582 2582  
2583 2583  
2584 2584  
2584 +Start the STM32 Flash Loader and choose the correct COM port to update.
2585 +
2585 2585  (((
2586 2586  (((
2588 +(% style="color:blue" %)**For LT-22222-LA**(%%):
2589 +
2590 +Hold down the **PRO** button, then briefly press the **RST** button. The **DO1** LED will change from OFF to ON. When the **DO1** LED is ON, it indicates that the device is in firmware download mode.
2591 +)))
2592 +
2593 +
2594 +)))
2595 +
2596 +
2597 +
2598 +
2599 +
2600 +
2601 +
2602 +(% style="color:red" %)**Note**(%%): If you have lost the programming cable, you can make one from a 3.5 mm cable. The pin mapping is as follows:
2603 +
2604 +
2605 +
2606 +(((
2607 +(((
2587 2587  == 6.2 How to change the LoRaWAN frequency band/region? ==
2588 2588  
2589 2589  
... ... @@ -2767,7 +2767,7 @@
2767 2767  = 8. Ordering information =
2768 2768  
2769 2769  
2770 -(% style="color:#4f81bd" %)**LT-22222-LA-XXX:**
2791 +(% style="color:#4f81bd" %)**LT-22222-L-XXX:**
2771 2771  
2772 2772  (% style="color:#4f81bd" %)**XXX:**
2773 2773  
... ... @@ -2786,8 +2786,8 @@
2786 2786  
2787 2787  (% style="color:#037691" %)**Package Includes**:
2788 2788  
2789 -* 1 x LT-22222-LA I/O Controller
2790 -* 1 x LoRa antenna matched to the frequency of the LT-22222-LA
2810 +* 1 x LT-22222-L I/O Controller
2811 +* 1 x LoRa antenna matched to the frequency of the LT-22222-L
2791 2791  * 1 x bracket for DIN rail mounting
2792 2792  * 1 x 3.5 mm programming cable
2793 2793