Python practical serial port assistant---6 realize serial port reception

star_66666

Python practical serial port assistant---6 realize serial port reception [Copy link]

 

Because I didn't debug successfully yesterday morning, I was upset and couldn't sleep well, so I got up before 2 o'clock this morning to continue debugging. Finally, I found the BUG of yesterday, which turned out to be a problem with the serial port parameter configuration. Here is the code first.

1. #! /usr/bin/env python # -*- coding: utf-8 -*- import time import datetime import threading import binascii import platform import logging import serial import SerialDeal import serialMainUI if platform.system() == "Windows": from serial.tools import list_ports elif platform.system() == "Linux": import glob, os, re import wx import wx.xrc logging.basicConfig(level=logging.DEBUG, format='%(asctime)s %(filename)s[line:%(lineno)d] %(levelname)s %(message)s', datefmt='%a, %d %b %Y %H:%M:%S') class MainSerialUI(serialMainUI.serialFrame): def __init__(self, master): super(MainSerialUI, self).__init__() self.ser = None self.receive_count = 0 self.receive_data = "" self.list_box_serial = None def __del__(self): if platform.system() == "Linux": try: self.ser.SetStopEvent() except: pass def m_openserOnButtonClick( self, event ): try: self.port = self.m_comset.GetValue() #print ("com is %s" % self.port) self.baudrate = self.m_comboBox2.GetValue() #print ("buadrate is %s" % self.baudrate) self.parity = self.m_comboBox4.GetValue() #print ("parity is %s" % self.parity) self.databit = self.m_comboBox3.GetValue() #print ("databit is %s" % self.databit) self.stopbit = self.m_comboBox5.GetValue() #print ("stopbit is %s" % self.stopbit) self.ser = SerialDeal.serDeal(Port=self.port, BaudRate=self.baudrate, ByteSize=self.databit, Parity=self.parity, Stopbits=self.stopbit) self.ser.start() if self.ser.alive: print 'succes' self.thread_read = threading.Thread(target=self.SerRead) self.thread_read.setDaemon(True) self.thread_read.start() else: print '0' except Exception as e: #logging.error(e) print u'Failed to open serial port' def SerRead(self): try: n = self.ser.serSer.inWaiting() if n: self.receive_data += self.ser.read(n).replace(binascii.unhexlify("00"), "") if self.ser.thresholdValue <= len(self.receive_data): self.receive_count += 1 # Whether the received display is Hex if self.m_rcvBox.get() == 1: self.receive_data = self.space_b2a_hex(self.receive_data) self.m_rcvtext.insert("end", "[" + str(datetime.datetime.now()) + " - " + str(self.receive_count) + "]:\n", "green") self.m_rcvtext.insert(" end", self.receive_data + "\n") self.m_rcvtext.see("end") self.receive_data = "" except Exception as e: logging.error(e) self.receive_data = "" self.ser.stop() self.ser = None def m_clrRcvTextOnButtonClick( self, event ): self.m_rcvtext.Clear() event.Skip() def space_b2a_hex(self, data): ''' format Example of the received data string: 123 --> 31 32 33 ''' new_data_list = list() new_data = "" hex_data = binascii.b2a_hex(data) temp_data = "" for index,value in enumerate(hex_data): temp_data += value if len(temp_data) == 2: new_data_list.append(temp_data) temp_data = "" for index,value in enumerate(new_data_list): if index%25 == 0 and index != 0: new_data += "\n" new_data += value new_data += " " return new_data def m_send1butOnButtonClick( self, event ): if self.ser.alive: send_data = self.m_textCtrl5.GetValue() #try: def m_clr1butOnButtonClick( self, event ): self.m_textCtrl5.Clear() def main(): app = wx. App() MainSerialUI(app).Show(True) app.MainLoop() if __name__ == '__main__': main()

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This code, combined with the previous two codes, can run the serial port receiving. I am very excited. There is still the serial port sending that has not been debugged. I will finish it another day and upload it to everyone again. Here is a description of the BUG: There are a lot of # comments in my code, which I use to confirm which step went wrong during debugging. You can also try this debugging method. ]This content is originally created by EEWORLD forum user star_66666. If you want to reprint or use it for commercial purposes, you must obtain the author's consent and indicate the sourceb2a_hex(data) temp_data = "" for index,value in enumerate(hex_data): temp_data += value if len(temp_data) == 2: new_data_list.append(temp_data) temp_data = "" for index,value in enumerate(new_data_list) : if index%25 == 0 and index != 0: new_data += "\n" new_data += value new_data += " " return new_data def m_send1butOnButtonClick( self, event ): if self.ser.alive: send_data = self.m_textCtrl5.GetValue() #try: def m_clr1butOnButtonClick( self, event ): self.m_textCtrl5.Clear () def main(): app = wx.App() MainSerialUI(app).Show(True) app.MainLoop() if __name__ == '__main__': main()[/code] This code, combined with the previous two codes, can run the serial port receiving. I am very excited. There is still the serial port sending that has not been debugged. I will finish it another day and upload it to everyone again. Here is a description of the BUG: There are a lot of # comments in my code, which I use to confirm which step went wrong during debugging. You can also try this debugging method. ]This content is originally created by EEWORLD forum user star_66666. If you want to reprint or use it for commercial purposes, you must obtain the author's consent and indicate the sourceb2a_hex(data) temp_data = "" for index,value in enumerate(hex_data): temp_data += value if len(temp_data) == 2: new_data_list.append(temp_data) temp_data = "" for index,value in enumerate(new_data_list) : if index%25 == 0 and index != 0: new_data += "\n" new_data += value new_data += " " return new_data def m_send1butOnButtonClick( self, event ): if self.ser.alive: send_data = self.m_textCtrl5.GetValue() #try: def m_clr1butOnButtonClick( self, event ): self.m_textCtrl5.Clear () def main(): app = wx.App() MainSerialUI(app).Show(True) app.MainLoop() if __name__ == '__main__': main()[/code] This code, combined with the previous two codes, can run the serial port receiving. I am very excited. There is still the serial port sending that has not been debugged. I will finish it another day and upload it to everyone again. Here is a description of the BUG: There are a lot of # comments in my code, which I use to confirm which step went wrong during debugging. You can also try this debugging method. ]This content is originally created by EEWORLD forum user star_66666. If you want to reprint or use it for commercial purposes, you must obtain the author's consent and indicate the source

powerniu

Did you use QT to make it? Can you please send me the interface?

star_66666

powerniu posted on 2018-1-24 08:46 Did you use QT to make it? Can you post the interface for us to see?

It is made with wxpython, and has an interface. Look at the previous post, this is a continuation of a project. Look at 3 or 4, there is an interface

powerniu

star_66666 posted on 2018-1-24 09:21 Made with wxpython, it has an interface. Look at the previous post. This is a continuation of a project. Look at 3 or 4, which have an interface

Yes, I just registered this website recently and saw your previous post. Thank you very much.

star_66666

powerniu posted on 2018-1-24 10:40 Yes, I just registered this website recently and saw your previous post. Thank you very much.

You are welcome. I have just started learning and am just working on my second project. I haven’t finished this serial port assistant yet. I learned it in my spare time after work. If you have time, let’s discuss and learn together.