Full examples of using pySerial package [closed]

Blog post Serial RS232 connections in Python

import timeimport serial# configure the serial connections (the parameters differs on the device you are connecting to)ser = serial.Serial(    port='/dev/ttyUSB1',    baudrate=9600,    parity=serial.PARITY_ODD,    stopbits=serial.STOPBITS_TWO,    bytesize=serial.SEVENBITS)ser.isOpen()print 'Enter your commands below.\r\nInsert "exit" to leave the application.'input=1while 1 :    # get keyboard input    input = raw_input(">> ")        # Python 3 users        # input = input(">> ")    if input == 'exit':        ser.close()        exit()    else:        # send the character to the device        # (note that I happend a \r\n carriage return and line feed to the characters - this is requested by my device)        ser.write(input + '\r\n')        out = ''        # let's wait one second before reading output (let's give device time to answer)        time.sleep(1)        while ser.inWaiting() > 0:            out += ser.read(1)        if out != '':            print ">>" + out

import serialser = serial.Serial(0)  # open first serial portprint ser.portstr       # check which port was really usedser.write("hello")      # write a stringser.close()             # close port

use https://pythonhosted.org/pyserial/ for more examples

http://web.archive.org/web/20131107050923/http://www.roman10.net/serial-port-communication-in-python/comment-page-1/

#!/usr/bin/pythonimport serial, time#initialization and open the port#possible timeout values:#    1. None: wait forever, block call#    2. 0: non-blocking mode, return immediately#    3. x, x is bigger than 0, float allowed, timeout block callser = serial.Serial()#ser.port = "/dev/ttyUSB0"ser.port = "/dev/ttyUSB7"#ser.port = "/dev/ttyS2"ser.baudrate = 9600ser.bytesize = serial.EIGHTBITS #number of bits per bytesser.parity = serial.PARITY_NONE #set parity check: no parityser.stopbits = serial.STOPBITS_ONE #number of stop bits#ser.timeout = None          #block readser.timeout = 1            #non-block read#ser.timeout = 2              #timeout block readser.xonxoff = False     #disable software flow controlser.rtscts = False     #disable hardware (RTS/CTS) flow controlser.dsrdtr = False       #disable hardware (DSR/DTR) flow controlser.writeTimeout = 2     #timeout for writetry:     ser.open()except Exception, e:    print "error open serial port: " + str(e)    exit()if ser.isOpen():    try:        ser.flushInput() #flush input buffer, discarding all its contents        ser.flushOutput()#flush output buffer, aborting current output                  #and discard all that is in buffer        #write data        ser.write("AT+CSQ")        print("write data: AT+CSQ")       time.sleep(0.5)  #give the serial port sometime to receive the data       numOfLines = 0       while True:          response = ser.readline()          print("read data: " + response)        numOfLines = numOfLines + 1        if (numOfLines >= 5):            break        ser.close()    except Exception, e1:        print "error communicating...: " + str(e1)else:    print "cannot open serial port "