--[[
========================================
UINT16 TO 8 DOUBLE POINT OUTPUTS
========================================
PURPOSE:
  Converts a single 16-bit unsigned integer input into 8 output tags.
  Each output represents 2 bits (Double Point value).
LOGIC:
  The 16-bit input is split into 8 groups of 2 bits:
  Bits mapping:
    Output 1 → bits 0-1
    Output 2 → bits 2-3
    Output 3 → bits 4-5
    Output 4 → bits 6-7
    Output 5 → bits 8-9
    Output 6 → bits 10-11
    Output 7 → bits 12-13
    Output 8 → bits 14-15
DOUBLE POINT MAPPING:
  00 → 0
  01 → 1
  10 → 2
  11 → 3
INPUT REQUIREMENT:
  Only input["1"] is used (UINT16 value)
OUTPUT:
  output["1"] to output["8"] will be generated
EXAMPLE:
  Input value = 3 (binary: 0000 0000 0000 0011)
  Output:
    Tag1 → 3
    Tag2 → 0
    Tag3 → 0
    ...
    Tag8 → 0
IMPORTANT:
  - Ensure input value is within 0–65535
  - Each output will contain one vector element
========================================
]]
function Uint16ToDoublePoint(input)
    -- Handle nil input
    if input == nil then
        return {}
    end
    local output = {}
    -- Read only first input tag
    local inVec = input["1"]
    if type(inVec) ~= "table" then
        return {}
    end
    -- Process each element in input vector
    for i, v in ipairs(inVec) do
        -- Get UINT16 value
        local value = v.value or 0
        -- Ensure value is within 16-bit range
        value = value % 65536
        -- Loop through 8 outputs (2 bits each)
        for bitPair = 0, 7 do
            -- Extract 2 bits
            local shift = bitPair * 2
            local twoBits = math.floor(value / (2 ^ shift)) % 4
            -- Assign to corresponding output tag
            local outKey = tostring(bitPair + 1)
            -- Initialize output vector if not exists
            if output[outKey] == nil then
                output[outKey] = {}
            end
            table.insert(output[outKey], {
                value = twoBits,                 -- Double point value (0–3)
                quality = v.quality or 0,
                timestamp = v.timestamp or 0
            })
        end
    end
    return output
end