Changes for page LSN50v2-D20-D22-D23 LoRaWAN Temperature Sensor User Manual
Last modified by Xiaoling on 2025/04/24 17:18
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... ... @@ -66,7 +66,6 @@ 66 66 67 67 68 68 69 - 70 70 = 1. Introduction = 71 71 72 72 == 1.1 What is LoRaWAN Soil pH Sensor == ... ... @@ -96,6 +96,7 @@ 96 96 97 97 98 98 98 + 99 99 == 1.2 Features == 100 100 101 101 * LoRaWAN 1.0.3 Class A ... ... @@ -113,6 +113,7 @@ 113 113 * 8500mAh Battery for long term use 114 114 115 115 116 + 116 116 == 1.3 Probe Specification == 117 117 118 118 ... ... @@ -133,12 +133,10 @@ 133 133 * IP68 Protection 134 134 * Length: 3.5 meters 135 135 136 - 137 137 == 1.4 Applications == 138 138 139 139 * Smart Agriculture 140 140 141 - 142 142 == 1.5 Pin mapping and power on == 143 143 144 144 [[image:1654592472094-134.png]] ... ... @@ -154,7 +154,7 @@ 154 154 ))) 155 155 156 156 ((( 157 -In case you can’t set the OTAA keys in the LoRaWAN OTAA server, and you have to use the keys from the server, you can [[use AT Commands >> path:#H5.UseATCommand]]to set the keys in the LSPH01.156 +In case you can’t set the OTAA keys in the LoRaWAN OTAA server, and you have to use the keys from the server, you can [[use AT Commands >>||anchor="H5.UseATCommand"]]to set the keys in the LSPH01. 158 158 ))) 159 159 160 160 ... ... @@ -240,19 +240,17 @@ 240 240 ))) 241 241 242 242 (% border="1" cellspacing="10" style="background-color:#ffffcc; width:510px" %) 243 -|((( 244 -**Size** 242 +|=(% style="width: 62.5px;" %)((( 243 +**Size (bytes)** 244 +)))|=(% style="width: 62.5px;" %)**2**|=(% style="width: 62.5px;" %)**2**|=**2**|=**2**|=**1**|=**1**|=**1** 245 +|(% style="width:62.5px" %)**Value**|(% style="width:62.5px" %)[[BAT>>||anchor="H2.3.1BatteryInfo"]]|(% style="width:62.5px" %)((( 246 +[[Temperature>>||anchor="H2.3.2DS18B20Temperaturesensor"]] 245 245 246 -**(bytes)** 247 -)))|**2**|**2**|**2**|**2**|**1**|**1**|**1** 248 -|**Value**|[[BAT>>path:#H2.3.1BatteryInfo]]|((( 249 -[[Temperature>>path:#H2.3.2DS18B20Temperaturesensor]] 250 - 251 -[[(Optional)>>path:#H2.3.2DS18B20Temperaturesensor]] 252 -)))|[[Soil pH>>path:#H2.3.3SoilpH]]|[[Soil Temperature>>path:#H2.3.4SoilTemperature]]|((( 253 -[[Digital Interrupt (Optional)>>path:#H2.3.5InterruptPin]] 248 +[[(Optional)>>||anchor="H2.3.2DS18B20Temperaturesensor"]] 249 +)))|[[Soil pH>>||anchor="H2.3.3SoilpH"]]|[[Soil Temperature>>||anchor="H2.3.4SoilTemperature"]]|((( 250 +[[Digital Interrupt (Optional)>>||anchor="H2.3.5InterruptPin"]] 254 254 )))|Reserve|((( 255 -[[Message Type>> path:#H2.3.6MessageType]]252 +[[Message Type>>||anchor="H2.3.6MessageType"]] 256 256 ))) 257 257 258 258 [[image:1654592721645-318.png]] ... ... @@ -308,7 +308,7 @@ 308 308 309 309 === 2.3.5 Interrupt Pin === 310 310 311 -This data field shows if this packet is generated by interrupt or not. [[Click here>> path:#H3.2SetInterruptMode]] for the hardware and software set up.308 +This data field shows if this packet is generated by interrupt or not. [[Click here>>||anchor="H3.2SetInterruptMode"]] for the hardware and software set up. 312 312 313 313 314 314 **Example:** ... ... @@ -330,11 +330,11 @@ 330 330 ))) 331 331 332 332 333 -(% border="1" cellspacing="10" style="background-color:#ffffcc; width: 510px" %)334 -|=**Message Type Code**|=**Description**|=**Payload** 335 -|0x01|Normal Uplink|[[Normal Uplink Payload>> path:#H2.3200BUplinkPayload]]336 -|0x02|Reply configures info|[[Configure Info Payload>> path:#H3.4GetFirmwareVersionInfo]]337 -|0x03|Reply Calibration Info|[[Calibration Payload>> path:#H2.7Calibration]]330 +(% border="1" cellspacing="10" style="background-color:#ffffcc; width:499px" %) 331 +|=(% style="width: 160px;" %)**Message Type Code**|=(% style="width: 163px;" %)**Description**|=(% style="width: 173px;" %)**Payload** 332 +|(% style="width:160px" %)0x01|(% style="width:163px" %)Normal Uplink|(% style="width:173px" %)[[Normal Uplink Payload>>||anchor="H2.3200BUplinkPayload"]] 333 +|(% style="width:160px" %)0x02|(% style="width:163px" %)Reply configures info|(% style="width:173px" %)[[Configure Info Payload>>||anchor="H3.4GetFirmwareVersionInfo"]] 334 +|(% style="width:160px" %)0x03|(% style="width:163px" %)Reply Calibration Info|(% style="width:173px" %)[[Calibration Payload>>||anchor="H2.7Calibration"]] 338 338 339 339 340 340 ... ... @@ -357,7 +357,7 @@ 357 357 358 358 == 2.4 Uplink Interval == 359 359 360 -The LSPH01 by default uplink the sensor data every 20 minutes. User can change this interval by AT Command or LoRaWAN Downlink Command. See this link: [[Change Uplink Interval>> path:/xwiki/bin/view/Main/End%20Device%20AT%20Commands%20and%20Downlink%20Command/#H4.1ChangeUplinkInterval]]357 +The LSPH01 by default uplink the sensor data every 20 minutes. User can change this interval by AT Command or LoRaWAN Downlink Command. See this link: [[Change Uplink Interval>>doc:Main.End Device AT Commands and Downlink Command.WebHome||anchor="H4.1ChangeUplinkInterval"]] 361 361 362 362 363 363 ... ... @@ -507,9 +507,13 @@ 507 507 508 508 == 2.7 Calibration == 509 509 507 +((( 510 510 User can do calibration for the probe. It is limited to use below pH buffer solution to calibrate: 4.00, 6.86, 9.18. When calibration, user need to clean the electrode and put the probe in the pH buffer solution to wait the value stable ( a new clean electrode might need max 24 hours to be stable). 509 +))) 511 511 511 +((( 512 512 After stable, user can use below command to calibrate. 513 +))) 513 513 514 514 [[image:image-20220607171149-4.png]] 515 515 ... ... @@ -516,12 +516,10 @@ 516 516 517 517 (% style="color:#037691" %)**Calibration Payload** 518 518 519 -(% border="1" cellspacing="10" style="background-color:#ffffcc; width:510px" %) 520 -|((( 521 -**Size** 522 - 523 -**(bytes)** 524 -)))|**1**|**1**|**1**|**7**|**1** 520 +(% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %) 521 +|=(% style="width: 62.5px;" %)((( 522 +**Size (bytes)** 523 +)))|=(% style="width: 89px;" %)**1**|=(% style="width: 89px;" %)**1**|=(% style="width: 89px;" %)**1**|=(% style="width: 89px;" %)**7**|=(% style="width: 89px;" %)**1** 525 525 |**Value**|((( 526 526 PH4 527 527 ... ... @@ -531,7 +531,7 @@ 531 531 532 532 Calibrate value 533 533 )))|Reserve|((( 534 -[[Message Type>> path:#H2.3.6MessageType]]533 +[[Message Type>>||anchor="H2.3.6MessageType"]] 535 535 536 536 Always 0x03 537 537 ))) ... ... @@ -544,8 +544,6 @@ 544 544 * Reply to the confirmation package: 14 01 545 545 * Reply to non-confirmed packet: 14 00 546 546 547 - 548 - 549 549 == 2.8 Frequency Plans == 550 550 551 551 ((( ... ... @@ -555,32 +555,61 @@ 555 555 556 556 === 2.8.1 EU863-870 (EU868) === 557 557 555 +((( 558 558 (% style="color:blue" %)**Uplink:** 557 +))) 559 559 559 +((( 560 560 868.1 - SF7BW125 to SF12BW125 561 +))) 561 561 563 +((( 562 562 868.3 - SF7BW125 to SF12BW125 and SF7BW250 565 +))) 563 563 567 +((( 564 564 868.5 - SF7BW125 to SF12BW125 569 +))) 565 565 571 +((( 566 566 867.1 - SF7BW125 to SF12BW125 573 +))) 567 567 575 +((( 568 568 867.3 - SF7BW125 to SF12BW125 577 +))) 569 569 579 +((( 570 570 867.5 - SF7BW125 to SF12BW125 581 +))) 571 571 583 +((( 572 572 867.7 - SF7BW125 to SF12BW125 585 +))) 573 573 587 +((( 574 574 867.9 - SF7BW125 to SF12BW125 589 +))) 575 575 591 +((( 576 576 868.8 - FSK 593 +))) 577 577 595 +((( 596 + 597 +))) 578 578 599 +((( 579 579 (% style="color:blue" %)**Downlink:** 601 +))) 580 580 603 +((( 581 581 Uplink channels 1-9 (RX1) 605 +))) 582 582 607 +((( 583 583 869.525 - SF9BW125 (RX2 downlink only) 609 +))) 584 584 585 585 586 586 ... ... @@ -601,48 +601,94 @@ 601 601 * Check what sub-band the LoRaWAN server ask from the OTAA Join Accept message and switch to that sub-band 602 602 * Use the Join successful sub-band if the server doesn’t include sub-band info in the OTAA Join Accept message ( TTN v2 doesn't include) 603 603 630 + 631 + 632 + 604 604 === 2.8.3 CN470-510 (CN470) === 605 605 635 +((( 606 606 Used in China, Default use CHE=1 637 +))) 607 607 639 +((( 608 608 (% style="color:blue" %)**Uplink:** 641 +))) 609 609 643 +((( 610 610 486.3 - SF7BW125 to SF12BW125 645 +))) 611 611 647 +((( 612 612 486.5 - SF7BW125 to SF12BW125 649 +))) 613 613 651 +((( 614 614 486.7 - SF7BW125 to SF12BW125 653 +))) 615 615 655 +((( 616 616 486.9 - SF7BW125 to SF12BW125 657 +))) 617 617 659 +((( 618 618 487.1 - SF7BW125 to SF12BW125 661 +))) 619 619 663 +((( 620 620 487.3 - SF7BW125 to SF12BW125 665 +))) 621 621 667 +((( 622 622 487.5 - SF7BW125 to SF12BW125 669 +))) 623 623 671 +((( 624 624 487.7 - SF7BW125 to SF12BW125 673 +))) 625 625 675 +((( 676 + 677 +))) 626 626 679 +((( 627 627 (% style="color:blue" %)**Downlink:** 681 +))) 628 628 683 +((( 629 629 506.7 - SF7BW125 to SF12BW125 685 +))) 630 630 687 +((( 631 631 506.9 - SF7BW125 to SF12BW125 689 +))) 632 632 691 +((( 633 633 507.1 - SF7BW125 to SF12BW125 693 +))) 634 634 695 +((( 635 635 507.3 - SF7BW125 to SF12BW125 697 +))) 636 636 699 +((( 637 637 507.5 - SF7BW125 to SF12BW125 701 +))) 638 638 703 +((( 639 639 507.7 - SF7BW125 to SF12BW125 705 +))) 640 640 707 +((( 641 641 507.9 - SF7BW125 to SF12BW125 709 +))) 642 642 711 +((( 643 643 508.1 - SF7BW125 to SF12BW125 713 +))) 644 644 715 +((( 645 645 505.3 - SF12BW125 (RX2 downlink only) 717 +))) 646 646 647 647 648 648 ... ... @@ -668,110 +668,220 @@ 668 668 * Use the Join successful sub-band if the server doesn’t include sub-band info in the OTAA Join Accept message ( TTN v2 doesn't include) 669 669 670 670 743 + 671 671 === 2.8.5 AS920-923 & AS923-925 (AS923) === 672 672 746 +((( 673 673 (% style="color:blue" %)**Default Uplink channel:** 748 +))) 674 674 750 +((( 675 675 923.2 - SF7BW125 to SF10BW125 752 +))) 676 676 754 +((( 677 677 923.4 - SF7BW125 to SF10BW125 756 +))) 678 678 758 +((( 759 + 760 +))) 679 679 762 +((( 680 680 (% style="color:blue" %)**Additional Uplink Channel**: 764 +))) 681 681 766 +((( 682 682 (OTAA mode, channel added by JoinAccept message) 768 +))) 683 683 770 +((( 771 + 772 +))) 684 684 774 +((( 685 685 (% style="color:blue" %)**AS920~~AS923 for Japan, Malaysia, Singapore**: 776 +))) 686 686 778 +((( 687 687 922.2 - SF7BW125 to SF10BW125 780 +))) 688 688 782 +((( 689 689 922.4 - SF7BW125 to SF10BW125 784 +))) 690 690 786 +((( 691 691 922.6 - SF7BW125 to SF10BW125 788 +))) 692 692 790 +((( 693 693 922.8 - SF7BW125 to SF10BW125 792 +))) 694 694 794 +((( 695 695 923.0 - SF7BW125 to SF10BW125 796 +))) 696 696 798 +((( 697 697 922.0 - SF7BW125 to SF10BW125 800 +))) 698 698 802 +((( 803 + 804 +))) 699 699 806 +((( 700 700 (% style="color:blue" %)**AS923 ~~ AS925 for Brunei, Cambodia, Hong Kong, Indonesia, Laos, Taiwan, Thailand, Vietnam**: 808 +))) 701 701 810 +((( 702 702 923.6 - SF7BW125 to SF10BW125 812 +))) 703 703 814 +((( 704 704 923.8 - SF7BW125 to SF10BW125 816 +))) 705 705 818 +((( 706 706 924.0 - SF7BW125 to SF10BW125 820 +))) 707 707 822 +((( 708 708 924.2 - SF7BW125 to SF10BW125 824 +))) 709 709 826 +((( 710 710 924.4 - SF7BW125 to SF10BW125 828 +))) 711 711 830 +((( 712 712 924.6 - SF7BW125 to SF10BW125 832 +))) 713 713 834 +((( 835 + 836 +))) 714 714 838 +((( 715 715 (% style="color:blue" %)**Downlink:** 840 +))) 716 716 842 +((( 717 717 Uplink channels 1-8 (RX1) 844 +))) 718 718 846 +((( 719 719 923.2 - SF10BW125 (RX2) 848 +))) 720 720 721 721 722 722 723 723 === 2.8.6 KR920-923 (KR920) === 724 724 854 +((( 725 725 (% style="color:blue" %)**Default channel:** 856 +))) 726 726 858 +((( 727 727 922.1 - SF7BW125 to SF12BW125 860 +))) 728 728 862 +((( 729 729 922.3 - SF7BW125 to SF12BW125 864 +))) 730 730 866 +((( 731 731 922.5 - SF7BW125 to SF12BW125 868 +))) 732 732 870 +((( 871 + 872 +))) 733 733 874 +((( 734 734 (% style="color:blue" %)**Uplink: (OTAA mode, channel added by JoinAccept message)** 876 +))) 735 735 878 +((( 736 736 922.1 - SF7BW125 to SF12BW125 880 +))) 737 737 882 +((( 738 738 922.3 - SF7BW125 to SF12BW125 884 +))) 739 739 886 +((( 740 740 922.5 - SF7BW125 to SF12BW125 888 +))) 741 741 890 +((( 742 742 922.7 - SF7BW125 to SF12BW125 892 +))) 743 743 894 +((( 744 744 922.9 - SF7BW125 to SF12BW125 896 +))) 745 745 898 +((( 746 746 923.1 - SF7BW125 to SF12BW125 900 +))) 747 747 902 +((( 748 748 923.3 - SF7BW125 to SF12BW125 904 +))) 749 749 906 +((( 907 + 908 +))) 750 750 910 +((( 751 751 (% style="color:blue" %)**Downlink:** 912 +))) 752 752 914 +((( 753 753 Uplink channels 1-7(RX1) 916 +))) 754 754 918 +((( 755 755 921.9 - SF12BW125 (RX2 downlink only; SF12BW125 might be changed to SF9BW125) 920 +))) 756 756 757 757 758 758 759 759 === 2.8.7 IN865-867 (IN865) === 760 760 926 +((( 761 761 (% style="color:blue" %)**Uplink:** 928 +))) 762 762 930 +((( 763 763 865.0625 - SF7BW125 to SF12BW125 932 +))) 764 764 934 +((( 765 765 865.4025 - SF7BW125 to SF12BW125 936 +))) 766 766 938 +((( 767 767 865.9850 - SF7BW125 to SF12BW125 940 +))) 768 768 942 +((( 943 + 944 +))) 769 769 946 +((( 770 770 (% style="color:blue" %)**Downlink:** 948 +))) 771 771 950 +((( 772 772 Uplink channels 1-3 (RX1) 952 +))) 773 773 954 +((( 774 774 866.550 - SF10BW125 (RX2) 956 +))) 775 775 776 776 777 777 ... ... @@ -783,6 +783,7 @@ 783 783 * Blink once when device transmit a packet. 784 784 785 785 968 + 786 786 == 2.10 Firmware Change Log == 787 787 788 788 ... ... @@ -797,26 +797,51 @@ 797 797 798 798 = 3. Configure LSPH01 via AT Command or LoRaWAN Downlink = 799 799 983 +((( 800 800 Use can configure LSPH01 via AT Command or LoRaWAN Downlink. 985 +))) 801 801 802 -* AT Command Connection: See [[FAQ>>path:#H6.FAQ]]. 803 -* LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>path:/xwiki/bin/view/Main/]] 987 +* ((( 988 +AT Command Connection: See [[FAQ>>||anchor="H6.FAQ"]]. 989 +))) 990 +* ((( 991 +LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>path:/xwiki/bin/view/Main/]] 992 +))) 804 804 994 +((( 805 805 There are two kinds of commands to configure LSPH01, they are: 996 +))) 806 806 807 -* (% style="color:#4f81bd" %)** General Commands**. 998 +* ((( 999 +(% style="color:#4f81bd" %)** General Commands**. 1000 +))) 808 808 1002 +((( 809 809 These commands are to configure: 1004 +))) 810 810 811 -* General system settings like: uplink interval. 812 -* LoRaWAN protocol & radio related command. 1006 +* ((( 1007 +General system settings like: uplink interval. 1008 +))) 1009 +* ((( 1010 +LoRaWAN protocol & radio related command. 1011 +))) 813 813 1013 +((( 814 814 They are same for all Dragino Device which support DLWS-005 LoRaWAN Stack. These commands can be found on the wiki:[[End Device AT Commands and Downlink Command>>path:/xwiki/bin/view/Main/End%20Device%20AT%20Commands%20and%20Downlink%20Command/]] 1015 +))) 815 815 1017 +((( 1018 + 1019 +))) 816 816 817 -* (% style="color:#4f81bd" %)** Commands special design for LSPH01** 1021 +* ((( 1022 +(% style="color:#4f81bd" %)** Commands special design for LSPH01** 1023 +))) 818 818 1025 +((( 819 819 These commands only valid for LSPH01, as below: 1027 +))) 820 820 821 821 822 822 ... ... @@ -830,16 +830,27 @@ 830 830 831 831 832 832 1041 +((( 833 833 (% style="color:#037691" %)**Downlink Command: 0x01** 1043 +))) 834 834 1045 +((( 835 835 Format: Command Code (0x01) followed by 3 bytes time value. 1047 +))) 836 836 1049 +((( 837 837 If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01. 1051 +))) 838 838 839 -* Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds 840 -* Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds 1053 +* ((( 1054 +Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds 1055 +))) 1056 +* ((( 1057 +Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds 841 841 842 842 1060 + 1061 +))) 843 843 844 844 == 3.2 Set Interrupt Mode == 845 845 ... ... @@ -850,18 +850,34 @@ 850 850 [[image:image-20220607171716-9.png]] 851 851 852 852 1072 +((( 853 853 (% style="color:#037691" %)**Downlink Command: 0x06** 1074 +))) 854 854 1076 +((( 855 855 Format: Command Code (0x06) followed by 3 bytes. 1078 +))) 856 856 1080 +((( 857 857 This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06. 1082 +))) 858 858 859 -* Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode 860 -* Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger 1084 +* ((( 1085 +Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode 1086 +))) 1087 +* ((( 1088 +Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger 1089 +))) 861 861 1091 +((( 1092 + 1093 +))) 1094 + 1095 + 1096 + 862 862 == 3.3 Calibrate Sensor == 863 863 864 -Detail See [[Calibration Guide>> path:#H2.7Calibration]] for the user of 0x13 and 0x14 downlink commands1099 +Detail See [[Calibration Guide>>||anchor="H2.7Calibration"]] for the user of 0x13 and 0x14 downlink commands 865 865 866 866 867 867 ... ... @@ -893,7 +893,7 @@ 893 893 894 894 Version 895 895 )))|Sensor Type|Reserve|((( 896 -[[Message Type>> path:#H2.3.6MessageType]]1131 +[[Message Type>>||anchor="H2.3.6MessageType"]] 897 897 Always 0x02 898 898 ))) 899 899 ... ... @@ -1033,9 +1033,13 @@ 1033 1033 1034 1034 === 4.3.2 Replace the battery === 1035 1035 1271 +((( 1036 1036 You can change the battery in the LSPH01.The type of battery is not limited as long as the output is between 3v to 3.6v. On the main board, there is a diode (D1) between the battery and the main circuit. If you need to use a battery with less than 3.3v, please remove the D1 and shortcut the two pads of it so there won’t be voltage drop between battery and main board. 1273 +))) 1037 1037 1275 +((( 1038 1038 The default battery pack of LSPH01 includes a ER26500 plus super capacitor. If user can’t find this pack locally, they can find ER26500 or equivalence, which will also work in most case. The SPC can enlarge the battery life for high frequency use (update period below 5 minutes) 1277 +))) 1039 1039 1040 1040 1041 1041 ... ... @@ -1056,24 +1056,24 @@ 1056 1056 (% style="background-color:yellow" %)** USB TTL RXD <~-~-~-~-> UART_TXD** 1057 1057 1058 1058 1298 +((( 1059 1059 In the PC, you need to set the serial baud rate to (% style="color:green" %)**9600**(%%) to access the serial console for LSPH01. LSPH01 will output system info once power on as below: 1300 +))) 1060 1060 1061 1061 1062 1062 [[image:1654593712276-618.png]] 1063 1063 1064 -Valid AT Command please check [[Configure Device>> path:#H3.ConfigureLSPH01viaATCommandorLoRaWANDownlink]].1305 +Valid AT Command please check [[Configure Device>>||anchor="H3.ConfigureLSPH01viaATCommandorLoRaWANDownlink"]]. 1065 1065 1066 1066 1067 - 1068 1068 = 6. FAQ = 1069 1069 1070 1070 == 6.1 How to change the LoRa Frequency Bands/Region == 1071 1071 1072 -You can follow the instructions for [[how to upgrade image>> path:#H2.10200BFirmwareChangeLog]].1312 +You can follow the instructions for [[how to upgrade image>>||anchor="H2.10200BFirmwareChangeLog"]]. 1073 1073 When downloading the images, choose the required image file for download. 1074 1074 1075 1075 1076 - 1077 1077 = 7. Trouble Shooting = 1078 1078 1079 1079 == 7.1 AT Commands input doesn’t work ==