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int sTx = 4;
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int sRx = 5;
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long base = 100;
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int id = 0;
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int baud = 19200;
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int enable = 2;
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char c;
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int counter = 0;
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void setup(){
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pinMode(A0,INPUT);
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id = analogRead(A0);
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pinMode(enable,OUTPUT);
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digitalWrite(enable,LOW);
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pinMode(sTx,OUTPUT);
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digitalWrite(sTx,LOW);
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pinMode(sRx,INPUT);
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Serial.begin(115200);
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Serial.print("Baud rate set to ");
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Serial.println(baud);
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Serial.print("Initialized Arduino #");
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Serial.println(id);
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}
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bool sendBit(bool bt){
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digitalWrite(sTx,bt);
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delayMicroseconds(80);
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if (digitalRead(sTx) != bt) return false;
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delayMicroseconds(base-80);
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return true;
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}
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|
bool sendChar(char c){
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return sendBit(c & 0x01)
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&& sendBit(c & 0x02)
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&& sendBit(c & 0x04)
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&& sendBit(c & 0x08)
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&& sendBit(c & 0x10)
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&& sendBit(c & 0x20)
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&& sendBit(c & 0x40)
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&& sendBit(c & 0x80);
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}
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bool sendString(String s){
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Serial.print("Sending '"+s+"'…");
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|
boolean busy = false;
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|
|
for (int i = 0; i<11; i++){
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|
if (!digitalRead(sRx)) {
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|
if (!busy){
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Serial.print("busy…");
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busy = true;
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|
}
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|
i = 0; // wait for free line
|
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|
}
|
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|
|
delayMicroseconds(base);
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|
}
|
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|
|
digitalWrite(enable,HIGH);
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|
|
bool success = sendBit(0); // erste Flanke erzeugen
|
|
|
|
if (success) {
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|
for (char c : s){
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|
if (!sendChar(c)){
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|
success = false;
|
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|
|
break;
|
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|
}
|
|
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|
}
|
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|
|
}
|
|
|
|
success = success && sendChar(13);
|
|
|
|
success = success && sendBit(1); // letzte Flanke erzeugen
|
|
|
|
digitalWrite(enable,LOW);
|
|
|
|
Serial.println(success ? "success" : "failed");
|
|
|
|
return success;
|
|
|
|
}
|
|
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|
|
|
|
void loop(){
|
|
|
|
counter++;
|
|
|
|
String s = "Hier ist ";
|
|
|
|
s.concat(id);
|
|
|
|
s+=": counter = ";
|
|
|
|
s.concat(counter);
|
|
|
|
while (!sendString(s)) delay(10*base);
|
|
|
|
delay(id);
|
|
|
|
}
|