aldadic / esp-smartmeter-reader Goto Github PK

First, thanks for publishing the code on GitHub.

I have a question regarding the start sequence of the telegram pushed from the meter: How did you find out the sequence?

I noticed that on my system I read something very similar in the data stream, but not exactly the same. I'm not using the ESP32, but I have a RS485 - USB converter connected to a RPi for reading an optical probe of the Wiener Netze smart meter. In my case there is an additional 0xFF in between 0x7e and 0xa0, the distance between two 0xa0 is still 105 bytes. So I'm just wondering if that's a problem on my side or if I'm missing something in the code.

Hi Aldadic,

I am currently writing an esphome component which should be able to read the smart meter interface of Wiener Netze - and in fact it does it - see here: https://github.com/chof747/smartmeter

However I am failing to implement the CRC check. I saw that you have implemented it in your code but it seems that the message format my meter is putting out is different from yours. I seem to have DLMS messages encrypted with AES_GCM and the telegrams start always with d8.

Do you have any idea where I can find more info about the CRC Check? - Or how that is composed? Thanks Christian

first of all thank you for effort pushing this project to GH (!)

I am struggling loading the project to a Lolin Wemos D1 Mini (ESP 8266).
I cannot activate the Mbedtls libary in the arduino IDE.

what I have tried (but not solved):

• find the libary in the libary manager (not found the correct one, just "Seeed_Arduino_mbedtls"
• install the mbedtls lib from github via zip file -> faulted
• copy the unzipped folders to: install folder or to the project folder

error msg:

C:~~\SmartMeterSchnittstelle\esp32-smartmeter-reader-main\esp32-smartmeter-reader-main\esp32-smartmeter-reader\esp32-smartmeter-reader.ino:2:10: fatal error: mbedtls/aes.h: No such file or directory
2 | #include "mbedtls/aes.h" //=> not found :(
| ^~~~~~~~~~~~~~~
compilation terminated.

exit status 1

Compilation error: mbedtls/aes.h: No such file or directory