Changes for page LT-22222-L -- LoRa I/O Controller User Manual
Last modified by Saxer Lin on 2025/04/15 17:24
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... ... @@ -971,10 +971,8 @@ 971 971 972 972 (% class="box infomessage" %) 973 973 ((( 974 -((( 975 975 **0xA9 aa bb cc ~/~/ Set DO1/DO2/DO3 output with time control** 976 976 ))) 977 -))) 978 978 979 979 This is to control the digital output time of DO pin. Include four bytes: 980 980 ... ... @@ -1191,6 +1191,7 @@ 1191 1191 1192 1192 [[image:image-20220524094641-11.png||height="390" width="723"]] 1193 1193 1192 + 1194 1194 [[image:image-20220524094641-12.png||height="402" width="718"]] 1195 1195 1196 1196 **Step 3**: Create an account or log in Mydevices. ... ... @@ -1249,7 +1249,7 @@ 1249 1249 1250 1250 So when sensor active, the current between NEC2501 pin1 and pin2 is： 1251 1251 1252 - [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]]**[[image:image-20220524095628-8.png]]= DI1+ / 1K.**1251 + //IF// = DI1+ / 1K. 1253 1253 1254 1254 If DI1+ = 12v, the //IF// = 12mA , So the LT-22222-L will be able to detect this active signal. 1255 1255 ... ... @@ -1263,9 +1263,9 @@ 1263 1263 1264 1264 So when sensor active, the current between NEC2501 pin1 and pin2 is: 1265 1265 1266 -[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]]** [[image:image-20220524095628-8.png]]= DI1+ / 1K.** 1265 +[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]][[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]][[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]]** [[image:image-20220524095628-8.png]]= DI1+ / 1K.** 1267 1267 1268 -If **DI1+ = 24v**, the [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]]**[[image:image-20220524095628-8.png]]** = 24mA , So the LT-22222-L will be able to detect this high active signal. 1267 +If **DI1+ = 24v**, the [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]][[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]][[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]]**[[image:image-20220524095628-8.png]]** = 24mA , So the LT-22222-L will be able to detect this high active signal. 1269 1269 1270 1270 1271 1271 **Example3**: Connect to a 220v high active sensor. ... ... @@ -1277,7 +1277,7 @@ 1277 1277 1278 1278 So when sensor active, the current between NEC2501 pin1 and pin2 is: 1279 1279 1280 - [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]]**[[image:image-20220524095628-8.png]] = DI1+ / 51K.** 1279 + [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]][[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]][[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]]**[[image:image-20220524095628-8.png]] = DI1+ / 51K.** 1281 1281 1282 1282 If sensor output is 220v, the (% id="cke_bm_243359S" style="display:none" %)[[image:image-20220524095628-8.png]](%%) = DI1+ / 51K. = 4.3mA , So the LT-22222-L will be able to detect this high active signal safely. 1283 1283 ... ... @@ -1336,9 +1336,7 @@ 1336 1336 1337 1337 [[image:1653358238933-385.png]] 1338 1338 1339 -((( 1340 1340 In PC, User needs to set (% style="color:#4f81bd" %)**serial tool**(%%)(such as [[putty>>url:https://www.chiark.greenend.org.uk/~~sgtatham/putty/latest.html]], SecureCRT) baud rate to (% style="color:green" %)**9600**(%%) to access to access serial console for LT. The AT commands are disable by default and need to enter password (default:(% style="color:green" %)**123456**)(%%) to active it. As shown below: 1341 -))) 1342 1342 1343 1343 [[image:1653358355238-883.png]] 1344 1344 ... ... @@ -1660,13 +1660,11 @@ 1660 1660 Below shows the hardware connection for how to upload an image to the LT: 1661 1661 * [[image:1653359603330-121.png]] 1662 1662 1663 -((( 1664 1664 **Step1:** Download [[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]]. 1665 1665 **Step2**: Download the [[LT Image files>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/]]. 1666 1666 **Step3: **Open flashloader; choose the correct COM port to update. 1667 1667 **For LT-22222-L**: 1668 1668 Hold down the PRO button and then momentarily press the RST reset button and the **DO1 led** will change from OFF to ON. When **DO1 LED** is on, it means the device is in download mode. 1669 -))) 1670 1670 1671 1671 [[image:image-20220524103407-12.png]] 1672 1672 ... ... @@ -1712,15 +1712,10 @@ 1712 1712 [[image:1653360231087-571.png||height="401" width="727"]] 1713 1713 ))) 1714 1714 1715 -((( 1716 1716 (% style="color:red" %)Note: user just need to make sure above three keys match, User can change either in TTN or Device to make then match. In TTN, NETSKEY and APPSKEY can be configured by user in setting page, but Device Addr is generated by TTN. 1717 -))) 1718 1718 1719 -((( 1720 1720 (% style="color:#4f81bd" %)**Step2**(%%)**: **Run AT Command to make LT work in Single frequency & ABP mode. Below is the AT commands: 1721 -))) 1722 1722 1723 -((( 1724 1724 (% style="background-color:#dcdcdc" %)123456 (%%) Enter Password to have AT access. 1725 1725 (% style="background-color:#dcdcdc" %)AT+FDR (%%) Reset Parameters to Factory Default, Keys Reserve 1726 1726 (% style="background-color:#dcdcdc" %)123456 (%%) Enter Password to have AT access. ... ... @@ -1731,11 +1731,8 @@ 1731 1731 (% style="background-color:#dcdcdc" %)AT+CHS=868400000 (%%)Set transmit frequency to 868.4Mhz 1732 1732 (% style="background-color:#dcdcdc" %)AT+DADDR=26 01 1A F1(%%) Set Device Address to 26 01 1A F1 1733 1733 (% style="background-color:#dcdcdc" %)ATZ (%%)Reset MCU 1734 -))) 1735 1735 1736 -((( 1737 1737 As shown in below: 1738 -))) 1739 1739 1740 1740 [[image:1653360498588-932.png||height="485" width="726"]] 1741 1741