RaspberryPi mit Arduino koppeln

Arduino:

int i = 0;                          // for incoming serial data
void setup() {
        Serial.begin(9600);         // opens serial port, sets data rate to 9600 bps
}

void loop() {   
    if (Serial.available() > 0) {   // send data only when you receive data:
        i = Serial.read();          // read the incoming byte:
        Serial.println(i, DEC);     // say what you got:
    }
}

Raspberry Pi:

sudo nano /etc/inittab

1:2345:respawn:/sbin/getty 115200 tty1
# Line below commented out
# 2:23:respawn:/sbin/getty -L ttyAMA0 115200 vt100
3:23:respawn:/sbin/getty 115200 tty3
4:23:respawn:/sbin/getty 115200 tty4
5:23:respawn:/sbin/getty 115200 tty5
6:23:respawn:/sbin/getty 115200 tty6

 sudo nano /boot/cmdline.txt

folgende Zeilen auskommentieren:

console=ttyAMA0,115200 und kgdboc=ttyAMA0,115200