wxpython

Reading data from serial and drawing it on wxPython

# -*- coding: utf-8 -*-
	# Author: Massimo Menichinelli
	# Homepage: http://www.openp2pdesign.org
	# License: MIT
	#
	import wx
	import serial
	# A new custom class that extends the wx.Frame
	class MyFrame(wx.Frame):
	def __init__(self, parent, title):
	super(MyFrame, self).__init__(parent, title=title,
	size=(250, 150))
	# Attach the paint event to the frame
	self.Bind(wx.EVT_PAINT, self.OnPaint)
	# Create a timer for redrawing the frame every 100 milliseconds
	self.Timer = wx.Timer(self)
	self.Timer.Start(100)
	self.Bind(wx.EVT_TIMER, self.OnPaint)
	# Show the frame
	self.Centre()
	self.Show()
	def OnPaint(self, event=None):
	# Create the paint surface
	dc = wx.PaintDC(self)
	# Refresh the display
	self.Refresh()
	# Get data from serial port
	value = arduino.readline()
	# Draw the serial data
	# Set up colors:
	thickness = 4
	border_color = "#990000"
	fill_color = "#FF944D"
	dc.SetPen(wx.Pen(border_color, thickness))
	dc.SetBrush(wx.Brush(fill_color))
	# Draw a line
	dc.DrawLine(50, 40, 50+value, 40)
	# Draw a rectangle
	dc.DrawRectangle(50,50,value,50)
	# Main program
	if __name__ == '__main__':
	# Connect to serial port first
	try:
	arduino = serial.Serial('/dev/tty.usbmodem1421', 9600)
	except:
	print "Failed to connect"
	exit()
	# Create and launch the wx interface
	app = wx.App()
	MyFrame(None, 'Serial data test')
	app.MainLoop()
	# Close the serial connection
	arduino.close()

Drawing serial data with wxPython+Matplotlib

You can also include Matplotlib visualizations in wxPython. Here are some sample codes: 01, 02. Here's my code, that reads from serial data:

	#!/usr/local/bin/python
	# -*- coding: utf-8 -*-
	import wx
	import serial
	# Import matplotlib for wxPython
	import matplotlib
	matplotlib.use('WXAgg')
	from matplotlib.backends.backend_wxagg import FigureCanvasWxAgg as FigureCanvas
	from matplotlib.backends.backend_wx import NavigationToolbar2Wx
	from matplotlib.figure import Figure
	class MyFrame(wx.Frame):
	def __init__(self, parent, title):
	super(MyFrame, self).__init__(parent, title=title,
	size=(350, 250))
	# Initialize the Matplotlib graph
	self.figure = Figure()
	self.axes = self.figure.add_subplot(111)
	self.canvas = FigureCanvas(self, -1, self.figure)
	# Create a timer for redrawing the frame every 100 milliseconds
	self.Timer = wx.Timer(self)
	self.Timer.Start(100)
	self.Bind(wx.EVT_TIMER, self.OnPaint)
	# Show the frame
	self.Centre()
	self.Show()
	def OnPaint(self, event=None):
	# Get data from serial port
	value = arduino.readline()
	# Draw the serial data
	# Cleare the previos graph
	self.axes.clear()
	# Set the Y axis limit in order to provide consistency in the visualization
	self.axes.set_ylim([0,100])
	# Draw the bar
	self.axes.bar(1,value)
	# Update the graph
	self.canvas.draw()
	# Main program
	if __name__ == '__main__':
	# Connect to serial port first
	try:
	arduino = serial.Serial('/dev/tty.usbmodem1421', 9600)
	except:
	print "Failed to connect"
	exit()
	# Create and launch the wx interface
	app = wx.App()
	MyFrame(None, 'Serial data test')
	app.MainLoop()
	# Close the serial connection
	arduino.close()

Reference :  http://fabacademy.org/archives/2015/doc/wxpython.html