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I've been messing about with Arduino derived micro controllers, and have been looking for a way to get them to send simple messages to and from each other. Something simpler than TCP/IP (which requires special hardware and relatively large libraries to run it), but more generic and flexible than just connecting an output pin on one device to the input pin on another.
aProtocol (or LLAP as it's also known) as defined on OpenKontrol seems to fill that gap just nicely. So, in 16 lines of code, I got a simple acknowledgement working;
String msg;
String reply;
void setup() {
Serial.begin(9600);
Serial.print("aDDSTARTED--");
}
void loop(){
if (Serial.available() >= 12){
if (Serial.read() == 'a') {
if (Serial.read() == 'D' && Serial.read() == 'D'){
msg = "";
for (byte i=0; i<9; i++) msg += Serial.read();
if (msg.compareTo("HELLO----")) reply = "aDDHELLO----";
// else if ...
Serial.print(reply);
} } } }
