Simple serial port example using Python.

Published: 23 November 2019
on channel: guru brahmayya

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Simple serial port hardware loop back programming using Python.
I have used COM4 (USB-Serial converter) and shorted TX(pin-2) and RX(pin-3).

Code:
import serial
from time import sleep

ser = serial.Serial(port='COM4',baudrate=9600,parity=serial.PARITY_NONE,stopbits=serial.STOPBITS_ONE,bytesize=serial.EIGHTBITS,timeout=0)
print("connected to: " + ser.portstr)
ser.write("Hello World")
sleep(1)
a=ser.readline()
print(a)
ser.close()

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