102 lines
2.2 KiB
Plaintext
102 lines
2.2 KiB
Plaintext
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//the Serial communication to the Arduino
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Serial serial;
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String[] serialRateStrings = {
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"300", "1200", "2400", "4800", "9600", "14400",
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"19200", "28800", "38400", "57600", "115200"
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};
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int baud = 9600;
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int serialListNumber = 3;
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ArrayList<Byte> serialBuffer = new ArrayList<Byte>();
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void setupSerial() {
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serial = new Serial(this, Serial.list()[serialListNumber], baud);
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}
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void stopSerial() {
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serial.stop();
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}
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void serialEvent(Serial serial) {
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//decode the message
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while (serial.available () > 0) {
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slipDecode(byte(serial.read()));
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}
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}
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void SerialSendToUDP() {
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byte [] buffer = new byte[serialBuffer.size()];
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//copy the buffer over
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for (int i = 0; i < serialBuffer.size(); i++) {
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buffer[i] = serialBuffer.get(i);
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}
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//send it off
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UDPSendBuffer(buffer);
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//clear the buffer
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serialBuffer.clear();
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//light up the indicator
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drawIncomingSerial();
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}
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void serialSend(byte[] data) {
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//encode the message and send it
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for (int i = 0; i < data.length; i++){
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slipEncode(data[i]);
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}
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//write the eot
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serial.write(eot);
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println("");
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}
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/************************************************************************************
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SLIP ENCODING
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************************************************************************************/
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byte eot = byte(192);
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byte slipesc = byte(219);
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byte slipescend = byte(220);
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byte slipescesc = byte(221);
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byte previousByte;
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void slipDecode(byte incoming) {
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byte previous = previousByte;
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previousByte = incoming;
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//if the previous was the escape char
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if (previous == slipesc) {
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//if this one is the esc eot
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if (incoming==slipescend) {
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serialBuffer.add(eot);
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}
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else if (incoming==slipescesc) {
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serialBuffer.add(slipesc);
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}
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}
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else if (incoming==eot) {
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//if it's the eot
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//send off the packet
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SerialSendToUDP();
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}
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else if (incoming != slipesc) {
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serialBuffer.add(incoming);
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}
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}
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void slipEncode(byte incoming) {
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if(incoming == eot){
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serial.write(slipesc);
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serial.write(slipescend);
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} else if(incoming==slipesc) {
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serial.write(slipesc);
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serial.write(slipescesc);
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} else {
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serial.write(incoming);
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}
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print((char)incoming);
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print(" ");
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println(incoming);
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}
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