Read from one datapoint and set to other for the same property

[Rafael4A]

Hi! I'm creating a converter for a cover entity, the issue is that this motor receives it's current position in one datapoint, but has another datapoint for target position. I was unable to find a way to merge those into one thing, so that the value gets pulled from one datapoint but when I set my target position it should write to the other. Here's my current adapter:

import fz from "zigbee-herdsman-converters/converters/fromZigbee";
import tz from "zigbee-herdsman-converters/converters/toZigbee";
import exposes from "zigbee-herdsman-converters/lib/exposes";
import reporting from "zigbee-herdsman-converters/lib/reporting";
import modernExtend from "zigbee-herdsman-converters/lib/modernExtend";
import tuya from "zigbee-herdsman-converters/lib/tuya";
const e = exposes.presets;
const ea = exposes.access;

export default {
  fingerprint: [
    {
      // The model ID from: Device with modelID 'TS0601' is not supported
      // You may need to add \u0000 at the end of the name in some cases
      modelID: "TS0601",
      // The manufacturer name from: Device with modelID 'TS0601' is not supported.
      manufacturerName: "_TZE204_q9xty0ad",
    },
  ],
  model: "TS0601_TZE204_q9xty0ad",
  vendor: "_TZE204_q9xty0ad",
  description: "Ayvolt Blinds",
  extend: [],
  fromZigbee: [tuya.fz.datapoints],
  toZigbee: [tuya.tz.datapoints],
  exposes: [
    e.cover_position(),
    e.numeric("position", ea.STATE).withDescription("Current position"),
    e.numeric("target_position", ea.ALL).withDescription("Target position"),
  ],
  onEvent: tuya.onEventSetTime, // Add this if you are getting no converter for 'commandMcuSyncTime'
  configure: tuya.configureMagicPacket,
  meta: {
    tuyaDatapoints: [
      [
        1,
        "state",
        tuya.valueConverterBasic.lookup({
          OPEN: tuya.enum(0),
          STOP: tuya.enum(1),
          CLOSE: tuya.enum(2),
        }),
      ],
      [8, "position", tuya.valueConverter.coverPosition], // current pos (reports)
      [9, "target_position", tuya.valueConverter.coverPosition], // target position
    ],
  },
};

The current adapter is janky since i have to use that second entity to set the position. For some reason, the current position is always updated after i move it using OPEN and CLOSE commands, but it fails when i click the refresh button, error message: z2m: No converter available for 'get' 'position' ()

I wasn't able to find any example of other devices that behave like that to use as reference. I've tried using a custom fromZigbee and toZigbee but it didn't work, not sure what was wrong with that though.

Thank you in advance for taking the time to help.

[Koenkk]

This can be achieved by using a null, for the receiving side and the key for the sending side, example: https://github.com/Koenkk/zigbee-herdsman-converters/blob/d221074408102266212a80b9f5931af997998aaf/src/devices/tuya.ts#L5742

[Rafael4A]

Hi @Koenkk, thank you for the fast reply!
I tried this but I still didn't get the results I expected. I can now set the position percentage, but if I move it using the open, or close functions, instead of setting the percentage, the position value is not updated, and shows the outdated position to where it was last set to.
I added the option to invert the direction as well, so I'll leave my updated adapter here in case this affects something:

import fz from "zigbee-herdsman-converters/converters/fromZigbee";
import tz from "zigbee-herdsman-converters/converters/toZigbee";
import exposes from "zigbee-herdsman-converters/lib/exposes";
import reporting from "zigbee-herdsman-converters/lib/reporting";
import modernExtend from "zigbee-herdsman-converters/lib/modernExtend";
import tuya from "zigbee-herdsman-converters/lib/tuya";
const e = exposes.presets;
const ea = exposes.access;

export default {
  fingerprint: [
    {
      // The model ID from: Device with modelID 'TS0601' is not supported
      // You may need to add \u0000 at the end of the name in some cases
      modelID: "TS0601",
      // The manufacturer name from: Device with modelID 'TS0601' is not supported.
      manufacturerName: "_TZE204_q9xty0ad",
    },
  ],
  model: "_TZE204_q9xty0ad",
  vendor: "Tuya",
  description: "Ayvolt Blinds",
  extend: [],
  fromZigbee: [tuya.fz.datapoints],
  toZigbee: [tuya.tz.datapoints],
  options: [exposes.options.invert_cover()],
  exposes: [
    e.cover_position(),
    // e.numeric("position", ea.STATE).withDescription("Current position"),
    // e.numeric("target_position", ea.ALL).withDescription("Target position"),
    e
      .enum("motor_direction", ea.STATE_SET, ["normal", "reversed"])
      .withDescription("Motor direction"),
  ],
  onEvent: tuya.onEventSetTime, // Add this if you are getting no converter for 'commandMcuSyncTime'
  configure: tuya.configureMagicPacket,
  meta: {
    tuyaDatapoints: [
      [
        1,
        "state",
        tuya.valueConverterBasic.lookup((options) =>
          options.invert_cover
            ? { OPEN: tuya.enum(2), STOP: tuya.enum(1), CLOSE: tuya.enum(0) }
            : { OPEN: tuya.enum(0), STOP: tuya.enum(1), CLOSE: tuya.enum(2) }
        ),
      ],
      [
        3,
        "work_state",
        tuya.valueConverterBasic.lookup((options) =>
          options.invert_cover
            ? { opening: tuya.enum(1), closing: tuya.enum(0) }
            : { opening: tuya.enum(0), closing: tuya.enum(1) }
        ),
      ],
      // [8, "position", tuya.valueConverter.coverPosition], // current pos (reports)
      // [9, "target_position", tuya.valueConverter.coverPosition], // target position
      [8, null, tuya.valueConverter.coverPosition],
      [9, "position", tuya.valueConverter.coverPosition],
      [11, "motor_direction", tuya.valueConverter.tubularMotorDirection],
    ],
  },
};

[Koenkk]

Can you try with this:

      // [8, "position", tuya.valueConverter.coverPosition], // current pos (reports)
      // [9, "target_position", tuya.valueConverter.coverPosition], // target position
      [8, null, {
        from: (v, meta, options, publish) => {
            return {position: tuya.valueConverter.coverPosition.from(v, meta, options, publish)};
        },
    }],
      [9, "position", tuya.valueConverter.coverPosition],

[Rafael4A]

That works exactly like I wanted! Thank you so much!! I'll open a PR soon. After it's merged, a new version is released and I update my instance, can I just delete the converter locally?

[Koenkk]

After it's merged, a new version is released and I update my instance, can I just delete the converter locally?

yes!