Changes for page LT-22222-LA -- LoRa I/O Controller User Manual

Last modified by Kilight Cao on 2025/07/03 15:34

From 55.2 to 55.1

From version 59.1

edited by Kilight Cao
on 2025/07/03 15:34

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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@@ -29,8 +29,6 @@
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  With the LT-22222-LA I/O Controller, users can transmit data over ultra-long distances with low power consumption using LoRa, a spread-spectrum modulation technique derived from chirp spread spectrum (CSS) technology that operates on license-free ISM bands.
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--(% style="color:blue" %)**LT-22222-LA I/O Controller**(%%)  support (% style="color:blue" %)**OTA upgrade**(%%) via private LoRa protocol for easy maintaining.
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@@ -98,7 +98,7 @@
  * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/RU864/IN865/MA869
  * AT Commands to change parameters
  * Remotely configure parameters via LoRaWAN Downlink
--* Support wireless OTA update firmware
++* Firmware upgradable via program port
  * Counting
  == 1.4 Applications ==
@@ -173,7 +173,7 @@
  == 2.3 Connecting LT-22222-LA to a Power Source ==
--The LT-22222-LA I/O Controller can be powered by a **7–24V DC** power source. Connect your power supply’s **positive wire** to the **VIN** and the **negative wire** to the **GND** screw terminals. The power indicator **(PWR) LED** will turn on when the device is properly powered.
++The LT-22222-L I/O Controller can be powered by a **7–24V DC** power source. Connect your power supply’s **positive wire** to the **VIN** and the **negative wire** to the **GND** screw terminals. The power indicator **(PWR) LED** will turn on when the device is properly powered.
  {{warning}}
  **We recommend that you power on the LT-22222-LA after adding its registration information to the LoRaWAN network server. Otherwise, the device will continuously send join-request messages to attempt to join a LoRaWAN network but will fail.**
@@ -508,10 +508,6 @@
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  === 3.3.3 AT+MOD~=3, Single DI Counting + 2 x ACI ===
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  **To activate this mode, run the following AT commands:**
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  === 3.3.5 AT+MOD~=5, Single DI Counting + 2 x AVI + 1 x ACI ===
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  === 3.3.6 AT+ADDMOD~=6 (Trigger Mode, Optional) ===
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  (% style="color:blue" %)**Example 4**(%%): Connecting to a Dry Contact sensor
  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.
@@ -2569,52 +2569,78 @@
  == 5.1 Counting how many objects pass through the flow line ==
--See [[How to set up to setup counting for objects passing through the flow line>>https://wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/How%20to%20set%20up%20to%20count%20objects%20pass%20in%20flow%20line/]].
++See [[How to set up to setup counting for objects passing through the flow line>>How to set up to count objects pass in flow line]].
--= 6. OTA Firmware update =
++= 6. FAQ =
--(% class="wikigeneratedid" %)
--User can change firmware LT-22222-LA to:
++This section contains some frequently asked questions, which can help you resolve common issues and find solutions quickly.
--* Change Frequency band/ region.
--* Update with new features.
--* Fix bugs.
--Firmware and changelog can be downloaded from : **[[Firmware download link>>https://www.dropbox.com/sh/fis3g6nmhv0eokg/AAC6BcCZaX4BdqZkduUvZ3jIa?dl=0]]**
++== 6.1 How to update the firmware? ==
--Methods to Update Firmware:
++Dragino frequently releases firmware updates for the LT-22222-L. Updating your LT-22222-L with the latest firmware version helps to:
--* (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/]]**
--* 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]]**.
++* Support new features
++* Fix bugs
++* Change LoRaWAN frequency bands
++You will need the following things before proceeding:
++* 3.5mm programming cable (included with the LT-22222-L as an additional accessory)
++* USB to TTL adapter/converter
++* 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)
++* 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.
--= 7. FAQ =
++{{info}}
++As of this writing, the latest firmware version available for the LT-22222-L is v1.6.1.
++{{/info}}
++Below is the hardware setup for uploading a firmware image to the LT-22222-L:
--This section contains some frequently asked questions, which can help you resolve common issues and find solutions quickly.
++Start the STM32 Flash Loader and choose the correct COM port to update.
++
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--== 7.2 How to change the LoRaWAN frequency band/region? ==
++(% style="color:blue" %)**For LT-22222-LA**(%%):
++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.
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++(% 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:
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++(((
++== 6.2 How to change the LoRaWAN frequency band/region? ==
++
++
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--You can follow the introductions on [[how to upgrade the image>>doc:.https\:wiki\.dragino\.comxwikibinviewMainUser%20Manual%20for%20LoRaWAN%20End%20NodesLT-22222-LA#H6\.OTAFirmwareupdate.WebHome]]. When downloading, select the required image file.
++You can follow the introductions on [[how to upgrade the image>>||anchor="H6.1Howtoupdatethefirmware3F"]]. When downloading, select the required image file.
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--== 7.3 How to set up LT-22222-LA to work with a Single Channel Gateway, such as LG01/LG02? ==
++== 6.3 How to set up LT-22222-LA to work with a Single Channel Gateway, such as LG01/LG02? ==
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@@ -2644,7 +2644,7 @@
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  {{warning}}
--Ensure that the Device Address (DevAddr) and the two keys match between the LT-22222-LA and The Things Stack. You can modify them either in The Things Stack or on the LT-22222-LA to make them align. In The Things Stack, you can configure the NwkSKey and AppSKey on the settings page, but note that the Device Address is generated by The Things Stack.
++Ensure that the Device Address (DevAddr) and the two keys match between the LT-22222-L and The Things Stack. You can modify them either in The Things Stack or on the LT-22222-L to make them align. In The Things Stack, you can configure the NwkSKey and AppSKey on the settings page, but note that the Device Address is generated by The Things Stack.
  {{/warning}}
@@ -2688,13 +2688,13 @@
  [[image:1653360498588-932.png]]
--== 7.4 How to change the uplink interval? ==
++== 6.4 How to change the uplink interval? ==
  Please see this link: [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/How%20to%20set%20the%20transmit%20time%20interval/>>url:http://wiki.dragino.com/xwiki/bin/view/Main/How%20to%20set%20the%20transmit%20time%20interval/]]
--== 7.5 Can I see the counting event in the serial output? ==
++== 6.5 Can I see the counting event in the serial output? ==
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@@ -2705,7 +2705,7 @@
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--== 7.6 Why does the relay output default to an open relay after the LT-22222-LA is powered off? ==
++== 6.6 Why does the relay output default to an open relay after the LT-22222-LA is powered off? ==
  * If the device is not properly shut down and is directly powered off.
@@ -2713,7 +2713,7 @@
  * In modes 2 to 5, the DO/RO status and pulse count are saved to flash memory.
  * After a restart, the status before the power failure will be read from Flash.
--== 7.7 Can I set up LT-22222-LA as an NC (Normally Closed) relay? ==
++== 6.7 Can I set up LT-22222-LA as an NC (Normally Closed) relay? ==
  The LT-22222-LA's built-in relay is Normally Open (NO). You can use an external relay to achieve a Normally Closed (NC) configuration. The circuit diagram is shown below:
@@ -2723,13 +2723,13 @@
--== 7.8 Why does the LT-22222-LA always report 15.585V when measuring the AVI? ==
++== 6.8 Why does the LT-22222-LA always report 15.585V when measuring the AVI? ==
  It is likely that the GND is not connected during the measurement, or that the wire connected to the GND is loose.
--= 8. Troubleshooting =
++= 7. Troubleshooting =
  This section provides some known troubleshooting tips.
@@ -2739,7 +2739,7 @@
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--== 8.1 Downlink isn't working. How can I solve this? ==
++== 7.1 Downlink isn't working. How can I solve this? ==
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@@ -2752,7 +2752,7 @@
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--== 8.2 Having trouble uploading an image? ==
++== 7.2 Having trouble uploading an image? ==
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@@ -2764,7 +2764,7 @@
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--== 8.3 Why can't I join TTN in the US915 /AU915 bands? ==
++== 7.3 Why can't I join TTN in the US915 /AU915 bands? ==
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@@ -2774,7 +2774,7 @@
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--== 8.4 Why can the LT-22222-LA perform uplink normally, but cannot receive downlink? ==
++== 7.4 Why can the LT-22222-LA perform uplink normally, but cannot receive downlink? ==
  The FCD count of the gateway is inconsistent with the FCD count of the node, causing the downlink to remain in the queue.
@@ -2781,10 +2781,10 @@
  Use this command to synchronize their counts: [[Resets the downlink packet count>>||anchor="H3.4.2.23Resettingthedownlinkpacketcount"]]
--= 9. Ordering information =
++= 8. Ordering information =
--(% style="color:#4f81bd" %)**LT-22222-LA-XXX:**
++(% style="color:#4f81bd" %)**LT-22222-L-XXX:**
  (% style="color:#4f81bd" %)**XXX:**
@@ -2798,13 +2798,13 @@
  * (% style="color:red" %)**IN865**(%%): LT with frequency bands IN865
  * (% style="color:red" %)**CN779**(%%): LT with frequency bands CN779
--= 10. Package information =
++= 9. Package information =
  (% style="color:#037691" %)**Package Includes**:
--* 1 x LT-22222-LA I/O Controller
--* 1 x LoRa antenna matched to the frequency of the LT-22222-LA
++* 1 x LT-22222-L I/O Controller
++* 1 x LoRa antenna matched to the frequency of the LT-22222-L
  * 1 x bracket for DIN rail mounting
  * 1 x 3.5 mm programming cable
@@ -2813,7 +2813,7 @@
  * Package Size / pcs : 145×80×50 mm
  * Weight / pcs : 180 g
--= 11. Support =
++= 10. Support =
  * (((
@@ -2825,7 +2825,7 @@
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--= 12. Reference =
++= 11. Reference =
  * LT-22222-LA: [[http:~~/~~/www.dragino.com/products/lora-lorawan-end-node/item/156-lt-22222-l.html>>url:http://www.dragino.com/products/lora-lorawan-end-node/item/156-lt-22222-l.html]]