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

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... ... @@ -506,6 +506,7 @@
506 506  
507 507  
508 508  
509 +
509 509  === 3.3.3 AT+MOD~=3, Single DI Counting + 2 x ACI ===
510 510  
511 511  
... ... @@ -544,6 +544,7 @@
544 544  
545 545  
546 546  
548 +
547 547  (((
548 548  **To activate this mode, run the following AT commands:**
549 549  )))
... ... @@ -638,6 +638,7 @@
638 638  
639 639  
640 640  
643 +
641 641  === 3.3.5 AT+MOD~=5, Single DI Counting + 2 x AVI + 1 x ACI ===
642 642  
643 643  
... ... @@ -700,6 +700,7 @@
700 700  
701 701  
702 702  
706 +
703 703  === 3.3.6 AT+ADDMOD~=6 (Trigger Mode, Optional) ===
704 704  
705 705  
... ... @@ -2280,6 +2280,7 @@
2280 2280  
2281 2281  
2282 2282  
2287 +
2283 2283  (% style="color:blue" %)**Example 4**(%%): Connecting to a Dry Contact sensor
2284 2284  
2285 2285  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.
... ... @@ -2556,55 +2556,29 @@
2556 2556  This section contains some frequently asked questions, which can help you resolve common issues and find solutions quickly.
2557 2557  
2558 2558  
2559 -== 6.1 How to update the firmware? ==
2564 +== 6.1 OTA Firmware update ==
2560 2560  
2561 2561  
2562 -Dragino frequently releases firmware updates for the LT-22222-L. Updating your LT-22222-L with the latest firmware version helps to:
2567 +(% class="wikigeneratedid" %)
2568 +User can change firmware LT-22222-LA to:
2563 2563  
2564 -* Support new features
2565 -* Fix bugs
2566 -* Change LoRaWAN frequency bands
2570 +* Change Frequency band/ region.
2571 +* Update with new features.
2572 +* Fix bugs.
2567 2567  
2568 -You will need the following things before proceeding:
2574 +Firmware and changelog can be downloaded from : **[[Firmware download link>>https://www.dropbox.com/sh/fis3g6nmhv0eokg/AAC6BcCZaX4BdqZkduUvZ3jIa?dl=0]]**
2569 2569  
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.
2574 2574  
2575 -{{info}}
2576 -As of this writing, the latest firmware version available for the LT-22222-L is v1.6.1.
2577 -{{/info}}
2577 +Methods to Update Firmware:
2578 2578  
2579 -Below is the hardware setup for uploading a firmware image to the LT-22222-L:
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]]**.
2580 2580  
2581 2581  
2582 2582  
2583 2583  
2584 -Start the STM32 Flash Loader and choose the correct COM port to update.
2585 -
2586 2586  (((
2587 2587  (((
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 -(((
2608 2608  == 6.2 How to change the LoRaWAN frequency band/region? ==
2609 2609  
2610 2610  
... ... @@ -2788,7 +2788,7 @@
2788 2788  = 8. Ordering information =
2789 2789  
2790 2790  
2791 -(% style="color:#4f81bd" %)**LT-22222-L-XXX:**
2770 +(% style="color:#4f81bd" %)**LT-22222-LA-XXX:**
2792 2792  
2793 2793  (% style="color:#4f81bd" %)**XXX:**
2794 2794  
... ... @@ -2807,8 +2807,8 @@
2807 2807  
2808 2808  (% style="color:#037691" %)**Package Includes**:
2809 2809  
2810 -* 1 x LT-22222-L I/O Controller
2811 -* 1 x LoRa antenna matched to the frequency of the LT-22222-L
2789 +* 1 x LT-22222-LA I/O Controller
2790 +* 1 x LoRa antenna matched to the frequency of the LT-22222-LA
2812 2812  * 1 x bracket for DIN rail mounting
2813 2813  * 1 x 3.5 mm programming cable
2814 2814