AT Command list for Downlink to the node (LSN50)

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1

Hi,

Does anybody has an list of all downlink commands send to the node because guides talk about AT command but never gives the corresponding hexa code of the AT command !
eg : wakeup command…
Thank you in advance
Arnaud

2

What about wiki.dragino.com or manual chapter 2.5?

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3

Hello community,

because I lost the sticker with the IDs of my LSN50v2 I try to find out the IDs via Console with AT-Commands.

Unfortunatly I am not able to get a communication, all commands are replied with criptic signs, see foto.

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20230425_0754211920×1081 174 KB

  • It happens the same on 2 different computers.

  • It happens the same with different console-progrmas (putty, serial port utility)

  • It happens the same with 2 different usb-rs232-adaptors

  • One of the computers is an older model with physical rs232-Interface: the same result

Interface: 9600, 8, none, 1, none (same settings in the program and the system-settings of PC).

I’m sure, it is just a checkbox or so, but I can’t figure it out.
Please help!!!

Kind regards,

Roger

4

What does the Dragino documentation say that the baud rate should be - 9600 is very slow for computers these days.

5

Just try an other Baudrate until you can read the messages.

6

All the DRGNO units I have used or tested (LHT65, LDD75, LT33222 etc.) have all been 9600, looks like OP’s settings correct, but may be worth trying others in case of updates/new firmware settings supporting higher speeds etc. 1 Stop bit correct from what I can recall.

7

I’ve been informed, that it’s essential to use a USB-TTL-Converter (and nothing else like USB-RS232 or USB-RS485 or RS232 directly (“COM1”). Because I don’t own such an converter, I 've ordered one witch will arrive early next week. Then I will see if that helps and reply to you guys with results.
So far, thank you for your replys.
Roger

8

Ouch, you’ve been using (potentially) -12v and +12v (these days usually +/- 5V) on a device that is expecting tops 3.3v. You might have damaged the input side of the uart port.

9

Dear all,
the USB-TTL-Converter has arrived and it worked immediatly. Therefore I can point out, it is essential to use exactly the right converter (search for “CP2102”) and not “just a converter” found in the tinkerbox.
Thanks to all,
Roger

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