Lorsque j'exécute le code avec la boucle while True:
incluse dans le root.mainloop()
, cela ralentit fortement mon interface graphique et le code ne fonctionne pas aussi bien que je le voudrais. Je me demande comment je rends mon code fluide et sans décalage. Pour les besoins de ce test, j'ai commenté de grandes sections du code qui ne fonctionnent que lorsqu'il est raccordé à mon pi de framboise.Python While loop within mainloop provoquant un décalage
Merci d'avance pour votre aide.
import os
import glob
import time
#import RPi.GPIO as GPIO
from datetime import datetime
from tkinter import *
'''
#Set gpio's
GPIO.setmode(GPIO.BCM)
GPIO.setwarnings(False)
GPIO.setup(17,GPIO.OUT)#RED
GPIO.setup(22,GPIO.OUT)#GREEN
GPIO.setup(27,GPIO.OUT)#BLUE
#grab temp probe information
os.system('modprobe w1-gpio')
os.system('modprobe w1-therm')
base_dir = '/sys/bus/w1/devices/'
device_folder = glob.glob(base_dir + '28*')[0]
device_file = device_folder + '/w1_slave'
# Read temperature from device
def read_temp_raw():
f = open(device_file, 'r')
lines = f.readlines()
f.close()
return lines
def read_temp():
lines=read_temp_raw()
while lines[0].strip()[-3:] != 'YES':
time.sleep(0.1)
lines = read_temp_raw()
equals_pos = lines[1].find('t=')
if equals_pos != -1:
temp_string = lines[1][equals_pos+2:]
temp_c = float(temp_string)/1000
#temp_f = temp_c * 9.0/5.0 + 32.0
return temp_c#, temp_f
'''
temp = 18
desiredtemp = 17
deg = u'\xb0'#utf code for degree
#increase button press
def increase():
global desiredtemp
desiredtemp += 0.5
tmpstr.set("%s" % desiredtemp)
#Decrease button press
def decrease():
global desiredtemp
desiredtemp -= 0.5
tmpstr.set("%s" % desiredtemp)
#Tkinter start
root = Tk()
root.wm_title("Temp") #Name the title bar
#code to add widgets will go here....
#make 3 frames for text and buttons
topFrame = Frame(root)
topFrame.pack(side=TOP)
middleFrame = Frame(root)
middleFrame.pack()
bottomFrame = Frame(root)
bottomFrame.pack(side=BOTTOM)
tmpstr = StringVar(value="%s" % desiredtemp)
crtmpstr = StringVar(value="%s" % temp)
#Set labels
label1 = Label(topFrame, text="Desired Temp = ", fg="black")
label2 = Label(middleFrame, text="Actual Temp = ", fg="black")
label3 = Label(topFrame, textvariable=tmpstr, fg="black")
label4 = Label(middleFrame, textvariable=crtmpstr, fg="black")
#use to put labels on screen
label1.pack(side=LEFT)
label2.pack(side=LEFT)
label3.pack(side=LEFT)
label4.pack(side=LEFT)
#Set buttons
button1 = Button(bottomFrame, text="Increase (0.5"+ deg +"C)", fg="black", command=increase)
button2 = Button(bottomFrame, text="Decrease (0.5"+ deg +"C)", fg="black", command=decrease)
#use to put buttons on screen
button1.pack(side=LEFT)
button2.pack(side=LEFT)
#Tkinter End
# Open file to be logged
'''
file = open("/home/pi/Desktop/Templog.csv", "a")
if os.stat("/home/pi/Desktop/Templog.csv").st_size == 0:
file.write("Date, Time, TemperatureSensor1\n")
'''
# Continuous print loop
while 1:
print(temp)
if(temp<=desiredtemp):
#GPIO.output(17,GPIO.LOW)
#GPIO.output(22,GPIO.HIGH)
temp += 5
crtmpstr.set("%s" % temp)
else:
#GPIO.output(17,GPIO.HIGH)
#GPIO.output(22,GPIO.LOW)
temp -=0.5
crtmpstr.set("%s" % temp)
#now = datetime.now()
#file.write(str(now.day)+"-"+str(now.month)+"-"+str(now.year)+","+str(now.hour)+":"+str(now.minute)+":"+str(now.second)+","+str(read_temp())+"\n")
#file.flush()
time.sleep(1)
root.update()
root.mainloop()
Avez-vous étudié la question que je lié précédemment http://stackoverflow.com/questions/459083/how-do-you-run-your-own-code-alongside-tkinters-event-loop –