[Device] MX Master 4 haptic button

[ChrisWhitling]

Device name and model

Logitech MX Master 4

Product ID (if known)

0xC548

How is the device connected?

USB receiver (Bolt / Unifying)

Does Mouser detect the device at all?

Yes, it shows the correct model name

Device info JSON

{
  "device_key": "mx_master_4",
  "display_name": "MX Master 4",
  "product_id": "0xC548",
  "product_name": "MX Master 4",
  "transport": "hidapi",
  "ui_layout": "mx_master_4",
  "supported_buttons": [
    "middle",
    "gesture",
    "gesture_left",
    "gesture_right",
    "gesture_up",
    "gesture_down",
    "xbutton1",
    "xbutton2",
    "hscroll_left",
    "hscroll_right",
    "mode_shift"
  ],
  "gesture_cids": [
    "0x00C3",
    "0x00D7"
  ],
  "dpi_range": [
    200,
    8000
  ],
  "discovered_features": {
    "REPROG_V4 (0x1B04)": "index 0x0D",
    "ADJUSTABLE_DPI (0x2201)": "index 0x14",
    "SMART_SHIFT_ENHANCED (0x2111)": "index 0x11",
    "BATTERY (0x1004)": "index 0x09"
  },
  "reprog_controls": [
    {
      "index": 0,
      "cid": "0x0050",
      "task": "0x0038",
      "flags": "0x0401",
      "mapped_to": "0x0050",
      "mapping_flags": "0x0000"
    },
    {
      "index": 1,
      "cid": "0x0051",
      "task": "0x0039",
      "flags": "0x0401",
      "mapped_to": "0x0051",
      "mapping_flags": "0x0000"
    },
    {
      "index": 2,
      "cid": "0x0052",
      "task": "0x003A",
      "flags": "0x0531",
      "mapped_to": "0x0052",
      "mapping_flags": "0x0000"
    },
    {
      "index": 3,
      "cid": "0x0053",
      "task": "0x003C",
      "flags": "0x0531",
      "mapped_to": "0x0053",
      "mapping_flags": "0x0000"
    },
    {
      "index": 4,
      "cid": "0x0056",
      "task": "0x003E",
      "flags": "0x0531",
      "mapped_to": "0x0056",
      "mapping_flags": "0x0000"
    },
    {
      "index": 5,
      "cid": "0x00C3",
      "task": "0x009C",
      "flags": "0x0531",
      "mapped_to": "0x00C3",
      "mapping_flags": "0x0000"
    },
    {
      "index": 6,
      "cid": "0x00C4",
      "task": "0x009D",
      "flags": "0x0531",
      "mapped_to": "0x00C4",
      "mapping_flags": "0x0000"
    },
    {
      "index": 7,
      "cid": "0x01A0",
      "task": "0x0109",
      "flags": "0x0531",
      "mapped_to": "0x01A0",
      "mapping_flags": "0x0000"
    },
    {
      "index": 8,
      "cid": "0x00D7",
      "task": "0x00B4",
      "flags": "0x03A0",
      "mapped_to": "0x00D7",
      "mapping_flags": "0x0000"
    }
  ],
  "gesture_candidates": [
    "0x00C3",
    "0x00D7"
  ]
}

Physical buttons on your mouse

The mouse fits the current MX Master profile, but has the addition of the haptic button.

What features would you like Mouser to support for this device?

Everything works great except for the haptic button. Mouser can see the button, but can't configure it. In the device info JSON, it shows up as index 7; the cid for the button is 0x01A0.

Are you willing to help test?

Yes, I can test builds and provide feedback

Additional context

Solaar and logiops both support the mouse. Everything works fine using them on my Fedora machine.