add water delivered to dsmr component

[jerome992]

What does this implement/fix?

add water delivered to dsmr component

Types of changes

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Other

Pull request in esphome-docs with documentation (if applicable): esphome/esphome-docs#2464

Test Environment

• ESP32
• ESP32 IDF
• ESP8266
• RP2040

Example entry for config.yaml:

dsmr:
  uart_id: p1_uart
  water_mbus_id: 2
  
sensor:
  - platform: dsmr
    water_delivered:
      name: Water delivered

Checklist:

• The code change is tested and works locally.
• Tests have been added to verify that the new code works (under tests/ folder).

If user exposed functionality or configuration variables are added/changed:

• Documentation added/updated in esphome-docs.

[probot-esphome]

Hey there @glmnet, @zuidwijk, mind taking a look at this pull request as it has been labeled with an integration (dsmr) you are listed as a code owner for? Thanks!
_{^{(message by CodeOwnersMention)}}

[zuidwijk]

I'm no esphome code developer. Yet if this data is in the telegrams of the meter (P1 port), could you give an example telegram in which you can see the obis code and the format used?

[jerome992]

It is not very easy to export the decrypted telegram from esphome. The very verbose logging only logs the beginning of the telegram.

Here is the P1 specification of Luxembourg:
https://www.luxmetering.lu/pdf/SPEC%20-%20E-Meter_P1_specification_20210308.pdf

Gas and water have the same OBIS in Luxembourg, but they are on different channels.

[massamino]

Hi,

I would love to see it merged.
The dsmr parser for home assistant has the water part integrated.
I can provide logging when I receive my meters.

dutch/belgian version: https://www.netbeheernederland.nl/_upload/Files/Slimme_meter_15_a727fce1f1.pdf
example for data: https://www.cdem.be/13_technical/#water-data

Thanks in advance

[AndreasStefanDahl]

I would very much like to see this functionality supported as well.

[meeusen]

Belgian digital electricity and water meter, no gas. With the changes from this PR, running on "slimmelezer" and setting the water_mbus_id to 1, I get the water meter values in the "Water Consumed" sensor. Below are the fields from a telegram of my meter (with the equipment ID changed). I also have to set the gas_mbus_id to 2, or anything but 1, I suppose, otherwise the water meter value ends up in the "Gas Consumed" sensor.

0-1:24.1.0(007)
0-1:96.1.1(1234567123456712345671234567)
0-1:24.2.1(230623000337S)(00042.176*m3)

[massamino]

That's what I'm seeing. I thought my gas usage was strange. It's probably the watermeter that is measured. 😁. Explains a lot.

[massamino]

@glmnet Can you please review the changes of @jerome992. As far as I can tell the code looks legit and would be very welcome.
Thank you.