dzVents Error Expression Expected >> Operator [Solved]

[rwblinn]

Domoticz 2022.1; Raspberry Pi 3B+, Raspberry Pi OS,

Got an error message "Expression expected near >" when declaring the >> operator:

Code: Select all

t[i+1] = (value >> (i * 16)) & 0xFFFF

in the code below. Also tried to use the << operator.

What is the correct way to use the << and >> operators in dzVents.

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...
execute = function(domoticz, device)
	domoticz.log(("%s: %s"):format(device.name, device.sValue))
	local value = tonumber(device.sValue)
        local t = {}
        for i = 0, 3 do
	    'ERROR
            t[i+1] = (value >> (i * 16)) & 0xFFFF
        end
        domoticz.log(t)
end
...

[boum]

Shift operators do not exist in Lua. You'll have to convert to math:

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t[i+1] = (value // (2 ^ (i * 16))) % (2 ^ 16)

[rwblinn]

Thats it. Thanks for help.