SLIPDecoder {
	var deviceName, <>rate, <>port, decode, <>actions, <>addresses, <numAddresses;

	*new {|deviceName="/dev/cu.SLAB_USBtoUART", rate=9600, numAddresses=3|

		^super.new.initSLIPDecoder(deviceName, rate, numAddresses);
	}

	initSLIPDecoder {|a,b,c|
		deviceName = a;
		rate = b;
		numAddresses = c;
		port = SerialPort(deviceName, rate);
		actions = {}!numAddresses; //second byte in the data array is its address if it's properly configured in OSC. This value is used to select between a number of actions which can be externally set. Each action is a function that takes the message contents as an argument. see 'decode' below. 
		decode = {|data| //function for decoding the properly-SLIP-decoded message. 
			var temp = 0!15, address, output;
			//data[1].asAscii.postln;
			address = data[1].asAscii.asString.asInt;
			//":".post;
			output = (data[data.size-2].asBinaryDigits.at([6,7]) ++ data[data.size-1].asBinaryDigits).convertDigits(2);
			actions[address].value(output);
		}
	}

	start {
		fork {
			// SLIP DECODING
			// ===================
			//
			// The packets are SLIP encoded using these special characters:
			// end = 8r300 (2r11000000 or 0xc0 or 192)
			// esc = 8r333 (2r11011011 or 0xdb or 219)
			// esc_end = 8r334 (2r011011100 or 0xdc or 220)
			// esc_esc = 8r335 (2r011011101 or 0xdd or 221)

			var buffer, serialByte;
			var maxPacketSize = 64; // 16 is enouch for 8 10 bit values.
			var slipEND = 8r300;
			var slipESC = 8r333;
			var slipESC_END = 8r334;
			var slipESC_ESC = 8r335;
			buffer = Int8Array(maxSize:maxPacketSize);
			{
				serialByte = port.read;
				serialByte.switch(
					slipEND, {
						decode.value(buffer);
						buffer = Int8Array(maxSize:maxPacketSize);
					},
					slipESC, {
						serialByte = port.read;
						serialByte.switch(
							slipESC_END, { buffer.add(slipEND) },
							slipESC_ESC, { buffer.add(slipESC) },
							{"SLIP encoding error.".error }
						)
					},
					{ buffer.add(serialByte) }
				);
			}.loop
		}



	}

}