Erste Verison mit Kollisions-Vermeidung.

Kollisions-Erkennung sollte auch funktionierten, aber das ist nicht ganz klar.

Signed-off-by: Stephan Richter <s.richter@srsoftware.de>

Receiver/Receiver.ino

@@ -1,19 +1,59 @@
-#include <SoftwareSerial.h>
-
-int baud = 19200;
-int sTx = 4;
-int sRx = 5;
-SoftwareSerial mySerial(sRx,sTx);
+int sTx = 2;
+int sRx = 3;
 
+long base = 800;
+long rst = base*10; // reset
+boolean bt = false;
+long dif = 0;
+long lt = 0;
+long now = 0;
+char rcv = 0;
+int idx = 0;
+String message;
 void setup(){
+  pinMode(sRx,INPUT);
+  pinMode(sTx,OUTPUT);
+  attachInterrupt(digitalPinToInterrupt(sRx),change,CHANGE);
   Serial.begin(115200);  
-  mySerial.begin(baud);  
   Serial.println("Receiver ready");
 }
 
-void loop(){
-   if (mySerial.available() > 0){
-      char c = mySerial.read();
-      Serial.print(c);
-   }
+void reset(long dif){
+    rcv = 0;
+    idx = -1;
+    message.reserve(32);
 }
+void change(){
+  bool bt = digitalRead(sRx);
+  now = micros();
+  dif = now - lt;
+  lt = now;
+  if (dif > rst){
+    reset(dif);
+  } else {
+    handle(!bt,dif);
+  }
+}
+
+void handle(boolean bt, long dif){
+  long count = dif/base;
+  for (int i=0; i<count; i++) push(bt);
+}
+
+void push(boolean bt){
+  if (idx>=0) rcv |= bt<<idx;
+  idx++;
+  
+  if (idx == 8){
+    if (rcv == 13) {
+      Serial.println(message);
+      message = "";
+    } else {
+      message+=rcv;
+    } 
+    idx =0;
+    rcv =0;
+  }
+}
+
+void loop(){}