emanuel lupia

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4 years, 7 months ago.

poor snr and rssi after update libmdot

Hello all!

Something strange happen after i update Mbed version to the latest. I’ve got very poor SNR and RSSI. And also i’ve updated the LoRaServer app/gateway, but i think that not the problem. See this image, when i’m using old version of mbed and new. What could go wrong? The gateway and mDot are close.

Best regards

1 Answer

Desmond Chen
4 years, 7 months ago.

Hi Emanuel,

Since there are development version and stable version of libmDot-mbed5 library, we recommend to use the stable one.

https://os.mbed.com/teams/MultiTech/code/libmDot-mbed5/

The most recent commit is "mdot-library revision 3.2.1 and mbed-os revision mbed-os-5.13.4", so it should work well on this version.

Which Mbed OS version are you using? Would you try to switch to mbed-os-5.13.4?

Thanks, Desmond

Hi Desmond,

thank for your reply. I'm using the stable version now "version : 3.2.1-mbed51101" so I think i'm using an old mbed version, but I recently updated.

ther's the link of the image when you can see the difference: https://drive.google.com/open?id=1_F7lzA0u4cMoEjBeqwcqky_lalgvT0Zn

Also, i'm recently created a new program with "dot-example" and imported the "libmDot-mbed5" and when I click on compile it give me an error: "Error: L6218E: Undefined symbol mts::Text::bin2hexString(const std::1::vector<unsigned char, std::1::allocator<unsigned char>>&, const char*, bool, bool) (referred from ../../build/examples/src/dot_util.MTS_MDOT_F411RE.o). "

Best regards

posted by emanuel lupia 23 Sep 2019