How to open a window with the output of a sensor connected via Bluetooth serial port with Python? [closed]

Question

I connected 3 sensors via Bluetooth serial port to a Raspberry Pi 4 with the following Python program:

import socket

serverMACAddress1 = 'XX:XX:XX:XX:XX:XX'
serverMACAddress2 = 'XX:XX:XX:XX:XX:XX'
serverMACAddress3 = 'XX:XX:XX:XX:XX:XX'

port = 1

s1 = socket.socket(socket.AF_BLUETOOTH, socket.SOCK_STREAM, socket.BTPROTO_RFCOMM)
s2 = socket.socket(socket.AF_BLUETOOTH, socket.SOCK_STREAM, socket.BTPROTO_RFCOMM)
s3 = socket.socket(socket.AF_BLUETOOTH, socket.SOCK_STREAM, socket.BTPROTO_RFCOMM)

s1.connect((serverMACAddress1,port))
s2.connect((serverMACAddress2,port))
s3.connect((serverMACAddress3,port))


while 1:
    text = input()
    if text == "quit":
        break
    s1.send(bytes(text, 'UTF-8'))
    data = client.recv(size) 
    if data: 
        print(data)
s1.close()

while 1:
    text = input()
    if text == "quit":
        break
    s2.send(bytes(text, 'UTF-8'))
    data = client.recv(size) 
    if data: 
        print(data)
s2.close()

while 1:
    text = input()
    if text == "quit":
        break
    s3.send(bytes(text, 'UTF-8'))
    data = client.recv(size) 
    if data: 
        print(data)
s3.close()

The sensors connected fine, but I haven't managed to see the data they are sending on the Shell of the IDE or on separate windows. What I would like is to open three separate windows (one for each sensor) to be able to see the data they are sending simultanously via seria port. Any ideas on how to do that?

---

Program for 1 sensor:

import socket

serverMACAddress = 'XX:XX:XX:XX:XX:XX'

port = 1

s = socket.socket(socket.AF_BLUETOOTH, socket.SOCK_STREAM, socket.BTPROTO_RFCOMM)
s.connect((serverMACAddress,port))

while 1:
    text = input()
    if text == "quit":
        break
    #data = s.send(bytes(text, 'UTF-8'))
    data = s.recv(1024)
    print(data)
    
s.close()

Answer 1

If you want all of the sensors to be read in one script/window then the three recv statements need to be in the same while loop.

However if you want them to run in three different terminals, I would make your script take a parameter so you could specify on the command line which server that script will connect to. e.g:

python read_spp_server.py 11:27:EB:D1:14:7E

An example of what the script might look like is:

import argparse
import socket

PORT = 1
SIZE = 16

def create_socket():
    return socket.socket(socket.AF_BLUETOOTH, socket.SOCK_STREAM, socket.BTPROTO_RFCOMM)

def read_sensor(sensor_socket):
    data = sensor_socket.recv(SIZE)
    if data:
        print(data.decode('utf-8'))

if __name__ == '__main__':
    parser = argparse.ArgumentParser()
    parser.add_argument('bd_addr', help='Address of device to connect to')
    args = parser.parse_args()

    sock = create_socket()
    print(f'Connecting to {args.bd_addr}')
    sock.connect((args.bd_addr, PORT))
    try:
        while True:
            read_sensor(sock)
    except KeyboardInterrupt:
        print('Closing socket')
    finally:
        sock.close()