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Bluetooh_Projet

Analysis of the need
  • Communication application with a Bluetooth keyboard allowing the entry of mathematical characters (Python language, Tkinter Modules, Pyserial).

  • From a keyboard connected in Bluetooth with the computer, retrieve the code of the keys typed and integrate the mathematical symbols in the text area of the application.

How to start

Prerequisite

The first thing is to install PyBluez,a bluetooth module, Open a terminal (command prompt on Windows) and enter :

pip install pybluez

Then you need the tkinter module, in order to be able to create a graphical interface :

pip install tkinter

We now import our necessary module

# Importation
from Tkinter import * # On importe Tkinter
import tkMessageBox, tkFileDialog, Tkconstants # On importe le module messagebox et filedialog
import serial # On importe le module de communication serie version pyserial-3.4
import time # On importe le module temps
import codecs
import tkFont

Main Code

#-------------------------------------------------------#
# Code Application #
#-------------------------------------------------------#


# Declaration des variables globales
comEtablie=False
ser1=0

# Les fonctions de l'application
def scanPort():
# Scan les ports. retourne une liste des noms des ports
available = [""]
for i in range(25):
try:
port = "COM"+str(i)
s = serial.Serial(port)
available.append(s.portstr)
s.close()
except serial.SerialException:
pass
return available

def connecter():
# Connection à la cible
global comEtablie
global ser1

try:
ser1 = serial.Serial("COM3",timeout=1) #Configurer le com manuellement
print "connexion etablie"

comEtablie=True

except serial.SerialException:
print "erreur de connexion"

def deconnecter():
# Deconnection de la cible
global comEtablie
global ser1

ser1.close()

comEtablie=False

def configuration(valString):
"""
valString : (str) : valeur sous forme de chaine à envoyer
"""
global comEtablie
global ser1

if comEtablie==True:
ser1.write(valString.encode())
time.sleep(0.3)

def NewFile():
"""permet d'afficher a à  l'écran un message d'information sur une ouvelle fenêtre"""
tkMessageBox.showinfo("New File")

def about():
tkMessageBox.showinfo("About", "This is a build version of serial bluetooth communication\nAuth : Benjamin Peronne")

def Open():
"""permet d'ouvrir un fichier extérieur dans la fenêtre
fichier = open("data.txt", "a")
fichier.write("Bonjour monde")
fichier.close()
fen1.filename
"""
global chemin_fichier
chemin_fichier= tkFileDialog.askopenfilename(initialdir = "/",title = "Select file",filetypes = (("text files","*.txt"),("all files","*.*")))
print (chemin_fichier)
mon_fichier = open(chemin_fichier, "r")
contenu = mon_fichier.read()
print(contenu)
textW.insert(END,contenu)
mon_fichier.close()

def Configuration(profil):
"""permet d'acceder au profil demander celon l'odre réseau"""
tkMessageBox.showwarning(profil)

def Save():
global chemin_fichier
contenu=textW.get("1.0",END)
print contenu
mon_fichier = open(chemin_fichier, "w")
mon_fichier.write(contenu)
mon_fichier.close()

def recevoir():
# Recoit les données sur RXD
global ser1
global comEtablie
profilN1=["∫","profil1","∞","≤","≥","√","∈","∉","∅","∩","∪","∑"]
profilN2=["±","⊆","∪","∩","∂","⊇","¾","∀","∇","∑","≈",""]
profilN3=["α","β","Ψ","φ","δ","ε","ζ","ξ","π","∑","σ","ω"]

if comEtablie == True:
if ser1.inWaiting() != 0 :
"""
valrecue = ser1.readline() # Lecture de 10 octets max dans le buffer de reception
# Valrecue = valrecue.decode('ascii')
E1.delete(0, END)
E1.insert(END,valrecue)
"""
valrecue = ser1.readline() # Lecture de 10 octets max dans le buffer de reception
Valrecue = valrecue.decode('ascii').encode('utf-8')
indice=int(Valrecue)-1
caractere=profilN1[indice]
#print codecs.decode(caractere,"utf-8")
textW.insert(END,profilN1[indice])
else:
pass
else:
pass
fen1.after(500,recevoir) # Mise à jour toutes les 500 ms

Graphic part

#-------------------------------------------------------#
#                    Code Graphique                     #
#-------------------------------------------------------#

	
# Le programme principal
fen1 = Tk() # Création de la fenêtre principale
fen1.title("Fenêtre Graphique du clavier bluetooth") # Titre ecrit dans la fenetre
fen1.config(bg='#ffffff') # Couleur de fond
fen1.geometry("400x200+400+100") # Dimension fenêtre (largeur x hauteur et postion X + Y)
fen1.resizable(width=True, height=True)  # Fenêtre non redimensionnable
#fenetre.maxsize(width=500, height=200)

#Déclaration des différents widgets
font1 = tkFont.Font(size=50, family='courier', weight='bold')
textW=Text(fen1, height=200, width= 250, wrap=NONE)
sy = Scrollbar(fen1, orient=VERTICAL, command = textW.yview)
sx = Scrollbar(fen1, orient=HORIZONTAL, command = textW.xview)
textW.config(yscrollcommand = sy.set, xscrollcommand = sx.set, font=font1)

#Placement du widget Text et des Scrollbar associés
sy.pack(side=RIGHT, fill=Y)
sx.pack(side=BOTTOM, fill=X)
textW.pack(side=RIGHT, fill=Y)

#Barre de menu
mainMenu = Menu(fen1)
#Ajout de la barre de menu a la fenêtre
fen1.config(menu = mainMenu) 

#création des menu fils
menuExample = Menu(mainMenu, tearoff=0)  #Menu fils
menuExample.add_command(label="New file", command=NewFile)  #Ajout d'une option au menu fils menuExample
menuExample.add_command(label="Open", command=Open)
menuExample.add_command(label="Save", command=Save)
menuExample.add_command(label="Save as", command=Save)

menuExample.add_separator()
menuExample.add_command(label="Quitter", command=fen1.destroy) 

menuConfiguration = Menu(mainMenu) #Menu fils
menuConfiguration.add_command(label="Profil 1", command=lambda :configuration("1")) #appel de la fonction configuration avec profil="1"
menuConfiguration.add_command(label="Profil 2", command=lambda :configuration("2"))
menuConfiguration.add_command(label="Profil 3", command=lambda :configuration("3"))
menuConfiguration.add_command(label="Profil 4", command=lambda :configuration("4"))

menuBluetooth = Menu(mainMenu)
menuBluetooth.add_command(label="Connexion", command=connecter)
menuBluetooth.add_command(label="Déconnexion", command=deconnecter)


menuHelp = Menu(mainMenu) #Menu fils
menuHelp.add_command(label="A propos", command=about)


#Ajout des menus fils a la barre de menus
mainMenu.add_cascade(label = "File", menu=menuExample)
mainMenu.add_cascade(label = "Configuration clavier", menu=menuConfiguration)
mainMenu.add_cascade(label = "Bluetooth", menu=menuBluetooth)
mainMenu.add_cascade(label = "Aide", menu=menuHelp)

recevoir()  # La fonction qui recupere les donnees presentes en reception RXD

fen1.mainloop() # affiche la fenêtre et lance la scrutation des évenements 

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