Changes for page LT-22222-L -- LoRa I/O Controller User Manual
Last modified by Mengting Qiu on 2025/06/04 18:42
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... ... @@ -51,6 +51,8 @@ 51 51 == 1.2 Specifications == 52 52 53 53 ((( 54 + 55 + 54 54 **Hardware System:** 55 55 ))) 56 56 ... ... @@ -203,6 +203,7 @@ 203 203 [[image:1653297104069-180.png]] 204 204 205 205 208 + 206 206 = 3. Operation Mode = 207 207 208 208 == 3.1 How it works? == ... ... @@ -217,6 +217,8 @@ 217 217 218 218 ))) 219 219 223 + 224 + 220 220 == 3.2 Example to join LoRaWAN network == 221 221 222 222 ((( ... ... @@ -258,6 +258,7 @@ 258 258 [[image:1653298044601-602.png||height="405" width="709"]] 259 259 260 260 266 + 261 261 == 3.3 Uplink Payload == 262 262 263 263 There are five working modes + one interrupt mode on LT for different type application: ... ... @@ -412,6 +412,7 @@ 412 412 ))) 413 413 414 414 421 + 415 415 === 3.3.3 AT+MOD~=3, Single DI Counting + 2 x ACI === 416 416 417 417 **LT22222-L**: This mode the DI1 is used as a counting pin. ... ... @@ -456,6 +456,8 @@ 456 456 457 457 ))) 458 458 466 + 467 + 459 459 === 3.3.4 AT+MOD~=4, Single DI Counting + 1 x Voltage Counting === 460 460 461 461 **LT22222-L**: This mode the DI1 is used as a counting pin. ... ... @@ -537,6 +537,7 @@ 537 537 ))) 538 538 539 539 549 + 540 540 === 3.3.5 AT+MOD~=5, Single DI Counting + 2 x AVI + 1 x ACI === 541 541 542 542 **LT22222-L**: This mode the DI1 is used as a counting pin. ... ... @@ -581,6 +581,8 @@ 581 581 582 582 ))) 583 583 594 + 595 + 584 584 === 3.3.6 AT+ADDMOD~=6. (Trigger Mode, Optional) === 585 585 586 586 (% style="color:#4f81bd" %)**This mode is an optional mode for trigger purpose. It can run together with other mode.** ... ... @@ -704,6 +704,7 @@ 704 704 When device got this command, it will send the MOD6 payload. 705 705 706 706 719 + 707 707 === 3.3.7 Payload Decoder === 708 708 709 709 ((( ... ... @@ -712,6 +712,8 @@ 712 712 713 713 ))) 714 714 728 + 729 + 715 715 == 3.4 Configure LT via AT or Downlink == 716 716 717 717 User can configure LT I/O Controller via AT Commands or LoRaWAN Downlink Commands ... ... @@ -729,6 +729,7 @@ 729 729 They should be available for each of Dragino Sensors, such as: change uplink interval, reset device. For firmware v1.5.4, user can find what common commands it supports: [[End Device AT Commands and Downlink Command>>doc:Main.End Device AT Commands and Downlink Command.WebHome]] 730 730 731 731 747 + 732 732 === 3.4.2 Sensor related commands === 733 733 734 734 ==== 3.4.2.1 Set Transmit Interval ==== ... ... @@ -752,6 +752,7 @@ 752 752 ))) 753 753 754 754 771 + 755 755 ==== 3.4.2.2 Set Work Mode (AT+MOD) ==== 756 756 757 757 Set work mode. ... ... @@ -773,6 +773,7 @@ 773 773 ))) 774 774 775 775 793 + 776 776 ==== 3.4.2.3 Poll an uplink ==== 777 777 778 778 * AT Command: ... ... @@ -789,6 +789,7 @@ 789 789 **Example**: 0x08FF, ask device to send an Uplink 790 790 791 791 810 + 792 792 ==== 3.4.2.4 Enable Trigger Mode ==== 793 793 794 794 Use of trigger mode, please check [[ADDMOD6>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]] ... ... @@ -812,6 +812,7 @@ 812 812 ))) 813 813 814 814 834 + 815 815 ==== 3.4.2.5 Poll trigger settings ==== 816 816 817 817 Poll trigger settings, ... ... @@ -828,6 +828,7 @@ 828 828 ))) 829 829 830 830 851 + 831 831 ==== 3.4.2.6 Enable / Disable DI1/DI2/DI3 as trigger ==== 832 832 833 833 Enable Disable DI1/DI2/DI2 as trigger, ... ... @@ -851,6 +851,7 @@ 851 851 ))) 852 852 853 853 875 + 854 854 ==== 3.4.2.7 Trigger1 – Set DI1 or DI3 as trigger ==== 855 855 856 856 Set DI1 or DI3(for LT-33222-L) trigger. ... ... @@ -878,6 +878,7 @@ 878 878 ))) 879 879 880 880 903 + 881 881 ==== 3.4.2.8 Trigger2 – Set DI2 as trigger ==== 882 882 883 883 Set DI2 trigger. ... ... @@ -905,6 +905,7 @@ 905 905 ))) 906 906 907 907 931 + 908 908 ==== 3.4.2.9 Trigger – Set AC (current) as trigger ==== 909 909 910 910 Set current trigger , base on AC port. See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]] ... ... @@ -924,6 +924,7 @@ 924 924 ))) 925 925 926 926 951 + 927 927 ==== 3.4.2.10 Trigger – Set AV (voltage) as trigger ==== 928 928 929 929 Set current trigger , base on AV port. See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]] ... ... @@ -943,6 +943,7 @@ 943 943 ))) 944 944 945 945 971 + 946 946 ==== 3.4.2.11 Trigger – Set minimum interval ==== 947 947 948 948 Set AV and AC trigger minimum interval, system won’t response to the second trigger within this set time after the first trigger. ... ... @@ -962,6 +962,7 @@ 962 962 ))) 963 963 964 964 991 + 965 965 ==== 3.4.2.12 DO ~-~- Control Digital Output DO1/DO2/DO3 ==== 966 966 967 967 * AT Command: ... ... @@ -994,6 +994,7 @@ 994 994 ))) 995 995 996 996 1024 + 997 997 ==== 3.4.2.13 DO ~-~- Control Digital Output DO1/DO2/DO3 with time control ==== 998 998 999 999 * AT Command: ... ... @@ -1056,6 +1056,7 @@ 1056 1056 DO1 pin no action, DO2 pin set low, DO3 pin set high, last 2 seconds, then DO1 pin no action, DO2 pin set high, DO3 pin set low 1057 1057 1058 1058 1087 + 1059 1059 === 3.4.2.14 Relay ~-~- Control Relay Output RO1/RO2 === 1060 1060 1061 1061 * AT Command: ... ... @@ -1084,6 +1084,7 @@ 1084 1084 Device will upload a packet if downlink code executes successfully. 1085 1085 1086 1086 1116 + 1087 1087 ==== 3.4.2.15 Relay ~-~- Control Relay Output RO1/RO2 with time control ==== 1088 1088 1089 1089 * AT Command: ... ... @@ -1134,6 +1134,7 @@ 1134 1134 Relay 1 & relay2 will change to NC, last 2 seconds, then both change to NO. 1135 1135 1136 1136 1167 + 1137 1137 ==== 3.4.2.16 Counting ~-~- Voltage threshold counting ==== 1138 1138 1139 1139 When voltage exceed the threshold, count. Feature see [[MOD4>>||anchor="H3.3.4AT2BMOD3D42CSingleDICounting2B1xVoltageCounting"]] ... ... @@ -1153,6 +1153,7 @@ 1153 1153 ))) 1154 1154 1155 1155 1187 + 1156 1156 ==== 3.4.2.17 Counting ~-~- Pre-configure the Count Number ==== 1157 1157 1158 1158 * AT Command: ... ... @@ -1178,6 +1178,7 @@ 1178 1178 ))) 1179 1179 1180 1180 1213 + 1181 1181 ==== 3.4.2.18 Counting ~-~- Clear Counting ==== 1182 1182 1183 1183 Clear counting for counting mode ... ... @@ -1197,6 +1197,7 @@ 1197 1197 ))) 1198 1198 1199 1199 1233 + 1200 1200 ==== 3.4.2.19 Counting ~-~- Change counting mode save time ==== 1201 1201 1202 1202 * AT Command: ... ... @@ -1219,6 +1219,8 @@ 1219 1219 1220 1220 ))) 1221 1221 1256 + 1257 + 1222 1222 == 3.5 Integrate with Mydevice == 1223 1223 1224 1224 Mydevices provides a human friendly interface to show the sensor data, once we have data in TTN, we can use Mydevices to connect to TTN and see the data in Mydevices. Below are the steps: ... ... @@ -1260,6 +1260,7 @@ 1260 1260 [[image:image-20220524094909-5.png||height="341" width="734"]] 1261 1261 1262 1262 1299 + 1263 1263 == 3.6 Interface Detail == 1264 1264 1265 1265 === 3.6.1 Digital Input Port: DI1/DI2 /DI3 ( For LT-33222-L, low active ) === ... ... @@ -1269,6 +1269,7 @@ 1269 1269 [[image:1653356991268-289.png]] 1270 1270 1271 1271 1309 + 1272 1272 === 3.6.2 Digital Input Port: DI1/DI2 ( For LT-22222-L) === 1273 1273 1274 1274 ((( ... ... @@ -1383,6 +1383,7 @@ 1383 1383 ))) 1384 1384 1385 1385 1424 + 1386 1386 === 3.6.3 Digital Output Port: DO1/DO2 /DO3 === 1387 1387 1388 1388 NPN output: GND or Float. Max voltage can apply to output pin is 36v. ... ... @@ -1390,6 +1390,7 @@ 1390 1390 [[image:1653357531600-905.png]] 1391 1391 1392 1392 1432 + 1393 1393 === 3.6.4 Analog Input Interface === 1394 1394 1395 1395 The analog input interface is as below. The LT will measure the IN2 voltage so to calculate the current pass the Load. The formula is: ... ... @@ -1418,6 +1418,7 @@ 1418 1418 [[image:1653357648330-671.png||height="155" width="733"]] 1419 1419 1420 1420 1461 + 1421 1421 === 3.6.5 Relay Output === 1422 1422 1423 1423 ((( ... ... @@ -1429,6 +1429,7 @@ 1429 1429 [[image:image-20220524100215-10.png||height="382" width="723"]] 1430 1430 1431 1431 1473 + 1432 1432 == 3.7 LEDs Indicators == 1433 1433 1434 1434 [[image:image-20220524100748-11.png]] ... ... @@ -1638,6 +1638,8 @@ 1638 1638 1639 1639 ))) 1640 1640 1683 + 1684 + 1641 1641 == 4.2 Common AT Command Sequence == 1642 1642 1643 1643 === 4.2.1 Multi-channel ABP mode (Use with SX1301/LG308) === ... ... @@ -1681,6 +1681,8 @@ 1681 1681 1682 1682 ))) 1683 1683 1728 + 1729 + 1684 1684 === 4.2.2 Single-channel ABP mode (Use with LG01/LG02) === 1685 1685 1686 1686 ((( ... ... @@ -1754,6 +1754,8 @@ 1754 1754 1755 1755 ))) 1756 1756 1803 + 1804 + 1757 1757 === 4.2.3 Change to Class A === 1758 1758 1759 1759 If sensor JOINED ... ... @@ -1770,14 +1770,19 @@ 1770 1770 * Support new features 1771 1771 * For bug fix 1772 1772 * Change LoRaWAN bands. 1821 + 1773 1773 Below shows the hardware connection for how to upload an image to the LT: 1774 -* [[image:1653359603330-121.png]] 1775 1775 1824 +[[image:1653359603330-121.png]] 1825 + 1826 + 1776 1776 ((( 1777 -**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]]. 1778 -**Step2**: Download the [[LT Image files>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/]]. 1779 -**Step3: **Open flashloader; choose the correct COM port to update. 1780 -**For LT-22222-L**: 1828 +(% style="color:blue" %)**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]]. 1829 +(% style="color:blue" %)**Step2**(%%)**:** Download the [[LT Image files>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/]]. 1830 +(% style="color:blue" %)**Step3**(%%)**:** Open flashloader; choose the correct COM port to update. 1831 + 1832 + 1833 +(% style="color:blue" %)**For LT-22222-L**(%%): 1781 1781 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. 1782 1782 ))) 1783 1783 ... ... @@ -1794,6 +1794,8 @@ 1794 1794 1795 1795 ((( 1796 1796 ((( 1850 + 1851 + 1797 1797 == 5.2 How to change the LoRa Frequency Bands/Region? == 1798 1798 ))) 1799 1799 ))) ... ... @@ -1800,11 +1800,11 @@ 1800 1800 1801 1801 ((( 1802 1802 User can follow the introduction for [[how to upgrade image>>||anchor="H5.1Howtoupgradetheimage3F"]]. When download the images, choose the required image file for download. 1803 - 1804 - 1805 1805 ))) 1806 1806 1807 1807 ((( 1861 + 1862 + 1808 1808 == 5.3 How to set up LT to work with Single Channel Gateway such as LG01/LG02? == 1809 1809 ))) 1810 1810 ... ... @@ -1817,6 +1817,8 @@ 1817 1817 ((( 1818 1818 ((( 1819 1819 Assume we have a LG02 working in the frequency 868400000 now , below is the step. 1875 + 1876 + 1820 1820 ))) 1821 1821 ))) 1822 1822 ... ... @@ -1832,23 +1832,25 @@ 1832 1832 (% 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. 1833 1833 ))) 1834 1834 1892 + 1835 1835 ((( 1836 1836 (% style="color:#4f81bd" %)**Step2**(%%)**: **Run AT Command to make LT work in Single frequency & ABP mode. Below is the AT commands: 1837 1837 ))) 1838 1838 1839 1839 ((( 1840 -(% style="background-color:#dcdcdc" %)123456 (%%) Enter Password to have AT access. 1841 -(% style="background-color:#dcdcdc" %)AT+FDR 1842 -(% style="background-color:#dcdcdc" %)123456 1843 -(% style="background-color:#dcdcdc" %)AT+NJM=0 (%%)Set to ABP mode 1844 -(% style="background-color:#dcdcdc" %)AT+ADR=0 (%%)Set the Adaptive Data Rate Off 1845 -(% style="background-color:#dcdcdc" %)AT+DR=5 (%%) Set Data Rate (Set AT+DR=3 for 915 band) 1846 -(% style="background-color:#dcdcdc" %)AT+TDC=60000 1847 -(% style="background-color:#dcdcdc" %)AT+CHS=868400000 1848 -(% style="background-color:#dcdcdc" %)AT+DADDR=26 01 1A F1(%%) Set Device Address to 26 01 1A F1 1849 -(% style="background-color:#dcdcdc" %)ATZ 1898 +(% style="background-color:#dcdcdc" %)123456 (%%) Enter Password to have AT access. 1899 +(% style="background-color:#dcdcdc" %)AT+FDR(%%) Reset Parameters to Factory Default, Keys Reserve 1900 +(% style="background-color:#dcdcdc" %)123456 (%%) Enter Password to have AT access. 1901 +(% style="background-color:#dcdcdc" %)AT+NJM=0 (%%) Set to ABP mode 1902 +(% style="background-color:#dcdcdc" %)AT+ADR=0 (%%) Set the Adaptive Data Rate Off 1903 +(% style="background-color:#dcdcdc" %)AT+DR=5 (%%) Set Data Rate (Set AT+DR=3 for 915 band) 1904 +(% style="background-color:#dcdcdc" %)AT+TDC=60000 (%%) Set transmit interval to 60 seconds 1905 +(% style="background-color:#dcdcdc" %)AT+CHS=868400000(%%) Set transmit frequency to 868.4Mhz 1906 +(% style="background-color:#dcdcdc" %)AT+DADDR=26 01 1A F1(%%) Set Device Address to 26 01 1A F1 1907 +(% style="background-color:#dcdcdc" %)ATZ (%%) Reset MCU 1850 1850 ))) 1851 1851 1910 + 1852 1852 ((( 1853 1853 As shown in below: 1854 1854 ))) ... ... @@ -1865,11 +1865,11 @@ 1865 1865 == 5.5 Can i use point to point communication for LT-22222-L? == 1866 1866 1867 1867 Yes, please refer [[Point to Point Communication>>doc:Main. Point to Point Communication of LT-22222-L.WebHome]] 1868 - 1869 - 1870 1870 ))) 1871 1871 1872 1872 ((( 1930 + 1931 + 1873 1873 = 6. Trouble Shooting = 1874 1874 ))) 1875 1875 ... ... @@ -1881,11 +1881,11 @@ 1881 1881 1882 1882 ((( 1883 1883 Please see this link for how to debug: [[LoRaWAN Communication Debug>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H5.1Howitwork"]] 1884 - 1885 - 1886 1886 ))) 1887 1887 1888 1888 ((( 1946 + 1947 + 1889 1889 == 6.2 Have trouble to upload image. == 1890 1890 ))) 1891 1891 ... ... @@ -1895,9 +1895,7 @@ 1895 1895 1896 1896 ((( 1897 1897 1898 -))) 1899 1899 1900 -((( 1901 1901 == 6.3 Why I can’t join TTN in US915 /AU915 bands? == 1902 1902 ))) 1903 1903 ... ... @@ -1905,147 +1905,58 @@ 1905 1905 It might be about the channels mapping. [[Please see this link for detail>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]] 1906 1906 ))) 1907 1907 1908 -((( 1909 - 1910 -))) 1911 1911 1912 - (((1966 + 1913 1913 = 7. Order Info = 1914 -))) 1915 1915 1916 -((( 1917 -((( 1969 + 1918 1918 (% style="color:#4f81bd" %)**LT-22222-L-XXX:** 1919 -))) 1920 -))) 1921 1921 1922 -((( 1923 -((( 1972 + 1924 1924 (% style="color:#4f81bd" %)**XXX:** 1925 -))) 1926 -))) 1927 1927 1928 -((( 1929 -* ((( 1930 -(% style="color:#4f81bd" %)**EU433**(%%): LT with frequency bands EU433 1931 -))) 1932 -))) 1975 +* (% style="color:#4f81bd" %)**EU433**(%%): LT with frequency bands EU433 1976 +* (% style="color:#4f81bd" %)**EU868**(%%): LT with frequency bands EU868 1977 +* (% style="color:#4f81bd" %)**KR920**(%%): LT with frequency bands KR920 1978 +* (% style="color:#4f81bd" %)**CN470**(%%): LT with frequency bands CN470 1979 +* (% style="color:#4f81bd" %)**AS923**(%%): LT with frequency bands AS923 1980 +* (% style="color:#4f81bd" %)**AU915**(%%): LT with frequency bands AU915 1981 +* (% style="color:#4f81bd" %)**US915**(%%): LT with frequency bands US915 1982 +* (% style="color:#4f81bd" %)**IN865**(%%): LT with frequency bands IN865 1983 +* (% style="color:#4f81bd" %)**CN779**(%%): LT with frequency bands CN779 1933 1933 1934 -((( 1935 -* ((( 1936 -(% style="color:#4f81bd" %)**EU868**(%%): LT with frequency bands EU868 1937 -))) 1938 -))) 1939 1939 1940 -((( 1941 -* ((( 1942 -(% style="color:#4f81bd" %)**KR920**(%%): LT with frequency bands KR920 1943 -))) 1944 -))) 1945 - 1946 -((( 1947 -* ((( 1948 -(% style="color:#4f81bd" %)**CN470**(%%): LT with frequency bands CN470 1949 -))) 1950 -))) 1951 - 1952 -((( 1953 -* ((( 1954 -(% style="color:#4f81bd" %)**AS923**(%%): LT with frequency bands AS923 1955 -))) 1956 -))) 1957 - 1958 -((( 1959 -* ((( 1960 -(% style="color:#4f81bd" %)**AU915**(%%): LT with frequency bands AU915 1961 -))) 1962 -))) 1963 - 1964 -((( 1965 -* ((( 1966 -(% style="color:#4f81bd" %)**US915**(%%): LT with frequency bands US915 1967 -))) 1968 -))) 1969 - 1970 -((( 1971 -* ((( 1972 -(% style="color:#4f81bd" %)**IN865**(%%): LT with frequency bands IN865 1973 -))) 1974 -))) 1975 - 1976 -((( 1977 -* ((( 1978 -(% style="color:#4f81bd" %)**CN779**(%%): LT with frequency bands CN779 1979 - 1980 - 1981 -))) 1982 - 1983 1983 = 8. Packing Info = 1984 -))) 1985 1985 1986 -((( 1987 -((( 1988 + 1988 1988 **Package Includes**: 1989 -))) 1990 -))) 1991 1991 1992 -((( 1993 -((( 1994 1994 * LT-22222-L I/O Controller x 1 1995 1995 * Stick Antenna for LoRa RF part x 1 1996 1996 * Bracket for controller x1 1997 1997 * Program cable x 1 1998 -))) 1999 -))) 2000 2000 2001 -((( 2002 -((( 2003 2003 **Dimension and weight**: 2004 -))) 2005 -))) 2006 2006 2007 -((( 2008 -((( 2009 2009 * Device Size: 13.5 x 7 x 3 cm 2010 2010 * Device Weight: 105g 2011 2011 * Package Size / pcs : 14.5 x 8 x 5 cm 2012 2012 * Weight / pcs : 170g 2013 2013 2014 - 2015 -))) 2016 -))) 2017 2017 2018 -((( 2019 2019 = 9. Support = 2020 -))) 2021 2021 2022 2022 * ((( 2023 -((( 2024 2024 Support is provided Monday to Friday, from 09:00 to 18:00 GMT+8. Due to different timezones we cannot offer live support. However, your questions will be answered as soon as possible in the before-mentioned schedule. 2025 2025 ))) 2026 -))) 2027 2027 * ((( 2028 -((( 2029 -Provide as much information as possible regarding your enquiry (product models, accurately describe your problem and steps to replicate it etc) and send a mail to 2010 +Provide as much information as possible regarding your enquiry (product models, accurately describe your problem and steps to replicate it etc) and send a mail to [[support@dragino.com>>url:file:///D:/市场资料/说明书/LoRa/LT系列/support@dragino.com]] 2030 2030 ))) 2031 -))) 2032 2032 2033 -((( 2034 -((( 2035 - [[support@dragino.com>>url:file:///D:/市场资料/说明书/LoRa/LT系列/support@dragino.com]] 2036 2036 2037 - 2038 -))) 2039 - 2040 -((( 2041 2041 = 10. Reference = 2042 2042 2043 -* Product Page: 2044 - 2045 -LT-22222-L: [[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]] 2046 - 2016 +* LT-22222-L: [[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]] 2047 2047 * [[Image Download>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/]] 2048 2048 * [[AT Command Manual>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/]] 2049 2049 * [[Hardware Source>>url:https://github.com/dragino/Lora/tree/master/LT/LT-33222-L/v1.0]] 2050 -))) 2051 -)))