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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... ... @@ -971,8 +971,10 @@ 971 971 972 972 (% class="box infomessage" %) 973 973 ((( 974 +((( 974 974 **0xA9 aa bb cc ~/~/ Set DO1/DO2/DO3 output with time control** 975 975 ))) 977 +))) 976 976 977 977 This is to control the digital output time of DO pin. Include four bytes: 978 978 ... ... @@ -1189,7 +1189,6 @@ 1189 1189 1190 1190 [[image:image-20220524094641-11.png||height="390" width="723"]] 1191 1191 1192 - 1193 1193 [[image:image-20220524094641-12.png||height="402" width="718"]] 1194 1194 1195 1195 **Step 3**: Create an account or log in Mydevices. ... ... @@ -1248,7 +1248,7 @@ 1248 1248 1249 1249 So when sensor active, the current between NEC2501 pin1 and pin2 is： 1250 1250 1251 - IF// = DI1+ / 1K.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.** 1252 1252 1253 1253 If DI1+ = 12v, the //IF// = 12mA , So the LT-22222-L will be able to detect this active signal. 1254 1254 ... ... @@ -1262,9 +1262,9 @@ 1262 1262 1263 1263 So when sensor active, the current between NEC2501 pin1 and pin2 is: 1264 1264 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.**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.** 1266 1266 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.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. 1268 1268 1269 1269 1270 1270 **Example3**: Connect to a 220v high active sensor. ... ... @@ -1276,7 +1276,7 @@ 1276 1276 1277 1277 So when sensor active, the current between NEC2501 pin1 and pin2 is: 1278 1278 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.**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.** 1280 1280 1281 1281 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. 1282 1282 ... ... @@ -1335,7 +1335,9 @@ 1335 1335 1336 1336 [[image:1653358238933-385.png]] 1337 1337 1339 +((( 1338 1338 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 +))) 1339 1339 1340 1340 [[image:1653358355238-883.png]] 1341 1341 ... ... @@ -1657,11 +1657,13 @@ 1657 1657 Below shows the hardware connection for how to upload an image to the LT: 1658 1658 * [[image:1653359603330-121.png]] 1659 1659 1663 +((( 1660 1660 **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]]. 1661 1661 **Step2**: Download the [[LT Image files>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/]]. 1662 1662 **Step3: **Open flashloader; choose the correct COM port to update. 1663 1663 **For LT-22222-L**: 1664 1664 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 +))) 1665 1665 1666 1666 [[image:image-20220524103407-12.png]] 1667 1667 ... ... @@ -1707,10 +1707,15 @@ 1707 1707 [[image:1653360231087-571.png||height="401" width="727"]] 1708 1708 ))) 1709 1709 1715 +((( 1710 1710 (% 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 +))) 1711 1711 1719 +((( 1712 1712 (% style="color:#4f81bd" %)**Step2**(%%)**: **Run AT Command to make LT work in Single frequency & ABP mode. Below is the AT commands: 1721 +))) 1713 1713 1723 +((( 1714 1714 (% style="background-color:#dcdcdc" %)123456 (%%) Enter Password to have AT access. 1715 1715 (% style="background-color:#dcdcdc" %)AT+FDR (%%) Reset Parameters to Factory Default, Keys Reserve 1716 1716 (% style="background-color:#dcdcdc" %)123456 (%%) Enter Password to have AT access. ... ... @@ -1721,8 +1721,11 @@ 1721 1721 (% style="background-color:#dcdcdc" %)AT+CHS=868400000 (%%)Set transmit frequency to 868.4Mhz 1722 1722 (% style="background-color:#dcdcdc" %)AT+DADDR=26 01 1A F1(%%) Set Device Address to 26 01 1A F1 1723 1723 (% style="background-color:#dcdcdc" %)ATZ (%%)Reset MCU 1734 +))) 1724 1724 1736 +((( 1725 1725 As shown in below: 1738 +))) 1726 1726 1727 1727 [[image:1653360498588-932.png||height="485" width="726"]] 1728 1728