Python Script Read RFComm Data

Question

I have successfully paired the Pi 3 to an Android phone via bluetooth. I have tested an RFcomm channel connection using Bluetooth Terminal from the Play Store and it shows that I have a valid connection for data transport.

Now I simply want to view the data from a Python script. Very basic, just read from the port and print. Here's the code:

import serial

ser = serial.Serial('dev/rfcomm0', 9600)

while True:
    result = ser.read()
    print result

I get an error however when I run this code:

SerialException: could not open port dev/rfcomm0: [Errno 2] No such file or directory: 'dev/rfcomm0'

Anyone know how to fix this?

Answer 1

Like the error said, you have the wrong path. Did you missed / at first? /dev/rfcomm0?

Anyway, the bluetooth serial port of RPi 3 is on /dev/ttyAMA0, maybe you should try that first.