58 lines
1.3 KiB
Lua
58 lines
1.3 KiB
Lua
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local function getBit(gate, val)
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--print("get bit", val)
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if gate.listenState=="wait" then
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if val==1 then
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gate.listenState = "getbits"
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gate.bitsReceived = 0
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--print("", "state = listen")
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end
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elseif gate.listenState=="getbits" then
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gate.valReceived = gate.valReceived + math.pow(2, textbrick2_bitsNeeded-1-gate.bitsReceived)*val
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gate.bitsReceived = gate.bitsReceived+1
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--print("", "append", gate.bitsReceived-1, val)
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if gate.bitsReceived==textbrick2_bitsNeeded then
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gate.listenState = "terminate"
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end
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elseif gate.listenState=="terminate" then
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if val==1 then
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print("", "terminate")
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local printid = gate.valReceived
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local printname = textbrick2_idxToPrint[printid]
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gate:cb(printname)
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--print("", "set print", string.format("%02x", printid), printname)
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end
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gate.listenState = "wait"
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gate.bitsReceived = 0
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gate.valReceived = 0
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end
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end
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local function changeTo(gate, val)
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local tick = gate:gettick()
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local ticks = tick-gate.lastTickChanged
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local bits = math.min(ticks, 10)
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for i = 1, bits do
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getBit(gate, val)
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end
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gate.lastTickChanged = tick
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end
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return function(gate)
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if gate.ports[1]:isrising() then
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changeTo(gate, 0)
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elseif gate.ports[1]:isfalling() then
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changeTo(gate, 1)
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end
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end
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