Esphome 12.2022 & HA - MBUS: Start bytes do not match & Frame too big for received data about esphome-dlms-meter HOT 5 OPEN

#21 added fix... is working for me!

Thanks a lot to the both of you. It wouldn't work for me (IKB) with just adding the delay. While the "Frame too big for received data" didn't show up in the log anymore, the "Start bytes do not match" was still there. I had to change my uart config from:

uart:
  tx_pin: GPIO1
  rx_pin: GPIO3
  baud_rate: 2400
  rx_buffer_size: 1024 # Needed to receive the large packets send by the smart meter
  id: mbus

to

uart:
  tx_pin: GPIO1
  rx_pin: GPIO3
  baud_rate: 2400
  parity: EVEN
  data_bits: 8
  stop_bits: 1
  rx_buffer_size: 2048
  id: mbus

I haven't checked what actually made the difference, but the above-mentioned fix and this config change worked in my case.

That's true. You must change the rx_buffer_size to 2048.
But you can leave data_bits and stop_bits because these are the default values.
I also have no parity settings.

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I can reproduce this on 2022.12 but I'm gonna have to check what changed.

For now, 2022.11.5 works fine.

from esphome-dlms-meter.

#21 added fix... is working for me!

from esphome-dlms-meter.

#21 added fix... is working for me!

Thanks a lot to the both of you. It wouldn't work for me (IKB) with just adding the delay. While the "Frame too big for received data" didn't show up in the log anymore, the "Start bytes do not match" was still there. I had to change my uart config from:

uart:
  tx_pin: GPIO1
  rx_pin: GPIO3
  baud_rate: 2400
  rx_buffer_size: 1024 # Needed to receive the large packets send by the smart meter
  id: mbus

to

uart:
  tx_pin: GPIO1
  rx_pin: GPIO3
  baud_rate: 2400
  parity: EVEN
  data_bits: 8
  stop_bits: 1
  rx_buffer_size: 2048
  id: mbus

I haven't checked what actually made the difference, but the above-mentioned fix and this config change worked in my case.

from esphome-dlms-meter.

#21 added fix... is working for me!

Thanks a lot to the both of you. It wouldn't work for me (IKB) with just adding the delay. While the "Frame too big for received data" didn't show up in the log anymore, the "Start bytes do not match" was still there. I had to change my uart config from:

uart:
  tx_pin: GPIO1
  rx_pin: GPIO3
  baud_rate: 2400
  rx_buffer_size: 1024 # Needed to receive the large packets send by the smart meter
  id: mbus

to

uart:
  tx_pin: GPIO1
  rx_pin: GPIO3
  baud_rate: 2400
  parity: EVEN
  data_bits: 8
  stop_bits: 1
  rx_buffer_size: 2048
  id: mbus

I haven't checked what actually made the difference, but the above-mentioned fix and this config change worked in my case.

That's true. You must change the rx_buffer_size to 2048. But you can leave data_bits and stop_bits because these are the default values. I also have no parity settings.

Thanks! I've tried removing them one by one but it wouldn't work without the parity: EVEN setting enabled, at least in my case. It would still error out with Start bytes do not match.

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