You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
87 lines
1.7 KiB
87 lines
1.7 KiB
int sTx = 4; |
|
int sRx = 5; |
|
|
|
long base = 800; |
|
|
|
int id = 0; |
|
int baud = 19200; |
|
int enable = 2; |
|
char c; |
|
int counter = 0; |
|
|
|
void setup(){ |
|
pinMode(A0,INPUT); |
|
id = analogRead(A0)*10; |
|
|
|
pinMode(enable,OUTPUT); |
|
digitalWrite(enable,LOW); |
|
|
|
pinMode(sTx,OUTPUT); |
|
digitalWrite(sTx,LOW); |
|
|
|
pinMode(sRx,INPUT); |
|
Serial.begin(115200); |
|
Serial.print("Baud rate set to "); |
|
Serial.println(baud); |
|
Serial.print("Initialized Arduino #"); |
|
Serial.println(id); |
|
} |
|
|
|
bool sendBit(bool bt){ |
|
digitalWrite(sTx,bt); |
|
delayMicroseconds(80); |
|
if (digitalRead(sTx) != bt) return false; |
|
delayMicroseconds(base-80); |
|
return true; |
|
} |
|
|
|
bool sendChar(char c){ |
|
return sendBit(c & 0x01) |
|
&& sendBit(c & 0x02) |
|
&& sendBit(c & 0x04) |
|
&& sendBit(c & 0x08) |
|
&& sendBit(c & 0x10) |
|
&& sendBit(c & 0x20) |
|
&& sendBit(c & 0x40) |
|
&& sendBit(c & 0x80); |
|
} |
|
|
|
bool sendString(String s){ |
|
Serial.print("Sending '"+s+"'…"); |
|
boolean busy = false; |
|
for (int i = 0; i<11; i++){ |
|
if (!digitalRead(sRx)) { |
|
if (!busy){ |
|
Serial.print("busy…"); |
|
busy = true; |
|
} |
|
i = 0; // wait for free line |
|
} |
|
delayMicroseconds(base); |
|
} |
|
digitalWrite(enable,HIGH); |
|
bool success = sendBit(0); // erste Flanke erzeugen |
|
if (success) { |
|
for (char c : s){ |
|
if (!sendChar(c)){ |
|
success = false; |
|
break; |
|
} |
|
} |
|
} |
|
success = success && sendChar(13); |
|
success = success && sendBit(1); // letzte Flanke erzeugen |
|
digitalWrite(enable,LOW); |
|
Serial.println(success ? "success" : "failed"); |
|
return success; |
|
} |
|
|
|
void loop(){ |
|
counter++; |
|
String s = "Hier ist "; |
|
s.concat(id); |
|
s+=": counter = "; |
|
s.concat(counter); |
|
while (!sendString(s)) delay(10*base); |
|
delay(id); |
|
}
|
|
|