readSerial

import serial
from serial import Serial

ser = serial.Serial(port='/dev/ttyUSB0',
                    baudrate=115200,
                    timeout=5,
                    xonxoff=False
                    )
ser.reset_input_buffer()
ser.write(b"getData")
ser.reset_output_buffer()
c = ''
data = ''
ok = False
while c != '\n':
    c = ser.read(1)
    data += str(c)
    if c == '\n':
        ok = True
ser.reset_output_buffer()
ser.close()
if ok:
    print(data)
else:
    print("Empty buffer")