Data-Empfangen über UART

import time, os, re, urllib

import msvcrt

import sys     

import serial

import struct

port="COM38"

def getAndSend1(test,type):

        global port

        if type=='int' :

                value=int(test)                    ##casting string to int

                ba=bytearray(struct.pack("i",value))

        elif type=='float' :

                value=float(test)                    ##casting string to float

                ba=bytearray(struct.pack("f",value))

        else:

                print("undefined type")

                return 0

        ba= b'\x7E\x7E'+ba+b'\x01\x01'                  ##adding header and tail to the byte array

        print("sent: "+str([ "0x%02x" % b for b in ba]))              ##print the packet before sending it

        ser = serial.Serial(port, 115200)            ##open serial port

        while ser.isOpen()==0:                          ##waiting till port get open

                1==1

        time.sleep(2)

        ser.write(ba)                                   ##sending the packet

        result = ser.read(8)                    ##reading the serial port

        print("recieved: "+str([ "0x%02x" % r for r in result]))

        resVal=struct.unpack("f",result[2:6]);

        print(str(resVal[0])+"\n")

getAndSend1(1,'int')