Please, I need guidance on what part of the source code to implement. We have an ESP32 and a DLMS meter with RS485 interface. We just need to communicate with it. Our ESP32 already speaks to an MQTT gateway

Hi
I am downloading data using
readRowsByEntry ; function but i am getting following data

Dear Gurux Team,

I am facing an issue while attempting to update the firmware on a meter, and I need your assistance in resolving this. Below are the details of the error I'm encountering:

Error Message: Failed to update meter firmware.

Error Details: Insufficient memory to continue the execution of the program.

Logical Name: Not specified in the error.

Steps Taken:

I tried updating the firmware using the standard procedure.

Hello, I'm currently encountering a situation where I'm using the official version of the.c client source code to read the electricity meter data, but the reading keeps failing.
The all-0 key I set when using the GXDLMSDirector client can be read normally,However, use https://github.com/Gurux/GuruxDLMS.c/tree/948da08617e623f5e3f6dd3dab9ad… appear error.
This is my execution order：

Hi Mikko Sir, 

when am trying to read data from my meter i get this error

hi dears , an iskra M3 meter always delay more than 2 years even after synch with system time, What could be the most important reasons? thanks in advance

I am working in a project where need to communicate with NON DLMS meters that use the IEC 62056-21

Is it possible if Gurux serial can be used to handle the communication