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usb.py
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usb.py
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# -*- coding: utf-8 -*-
#!/usr/bin/python3
"""
This file is part of egg-force-one.
egg-force-one is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Foobar is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with egg-force-one. If not, see <http://www.gnu.org/licenses/>. 2
############################################################################
Created on Mon Sep 25 16:24:39 2017
@author: CASAL Guillaume
"""
#import externe
import os
import time
from threading import Thread, RLock
import serial
import serial.tools.list_ports
os.chdir(os.path.dirname(os.path.realpath(__file__))) # nous place dans le dossier de l'executable
#print(os.path.dirname(os.path.realpath(__file__)))
class Usb(Thread):
def __init__(self, sysVar):
self.sysVar = sysVar
self.tempTxt = b''
Thread.__init__(self)
pass
def bugCom(self):
try:
self.sysVar.usbConnect.close()
pass
except:
pass
self.sysVar.usbConnect = False
self.sysVar.usbBug = True
self.tempTxt = b''
#self.com = False
with self.sysVar.lockInput:
self.sysVar.gcodeInput = []
with self.sysVar.lockOutput:
self.sysVar.gcodeOutput = []
pass
def ecriture(self):
if (self.sysVar.gcodeCom == True):
if (len(self.sysVar.gcodeOutput) > 0):
try:
with self.sysVar.lockOutput:
self.sysVar.usbSerial.write(self.sysVar.gcodeOutput[0].encode('utf-8'))
pass
pass
except:
self.bugCom()
pass
else:
with self.sysVar.lockOutput:
del self.sysVar.gcodeOutput[0]
pass
pass
pass
pass
pass
def lecture(self):
try:
self.tempTxt += self.sysVar.usbSerial.read(self.sysVar.usbSerial.inWaiting())
pass
except:
self.bugCom()
pass
else:
pass
pass
def addLine(self):
nb = len(self.tempTxt)
if (nb > 0):
self.sysVar.gcodeCom = True
try:
pos = self.tempTxt.find(b'\n')
pass
except:
#test provisoire
pos = -1
print("USB : BUG : addLine : 0")
pass
if (pos != -1):
with self.sysVar.lockInput:
try:
self.sysVar.gcodeInput.append(str(self.tempTxt[0:pos], 'utf-8'))
pass
except:
print("USB : BUG : addLine : 1")
pass
pass
self.tempTxt = self.tempTxt[pos + 1: nb]
pass
else:
pass
pass
pass
def recherche(self):
self.sysVar.usbAllPort = serial.tools.list_ports.comports()
#for element in self.sysVar.usbAllPort:
# self.sysVar.threadControl.msgTerminal(element)
# pass
pass
def testConnect(self):
time.sleep(2)
print("test connect : " + str(self.sysVar.usbSerial.port) + " : " + str(self.sysVar.usbSerial.baudrate))
try:
self.lecture()
pass
except:
#print("USB : INFO : testConnect : EXIT 0")
raise Exception('BAD BAUD')
pass
try:
pos = self.tempTxt.find(b'\n')
if (pos == -1):
raise Exception('BAD BAUD')
pass
pass
except:
#print("USB : INFO : testConnect : EXIT 1")
self.tempTxt = b''
raise Exception('BAD BAUD')
pass
try:
self.addLine()
pass
except:
#print("USB : INFO : testConnect : EXIT 2")
raise Exception('BAD BAUD')
pass
pass
def sucessConnect(self):
self.sysVar.usbConnect = True
self.sysVar.usbBug = False
self.sysVar.usbPort = str(self.sysVar.usbSerial.port)
self.sysVar.usbBauderate = str(self.sysVar.usbSerial.baudrate)
print("USB connecté : " + str(self.sysVar.usbPort) + " : " + str(self.sysVar.usbSerial.baudrate))
try:
self.sysVar.threadControl.startGcode() #lance le start gcode
pass
except:
print("start gcode error")
pass
pass
def autoBaud(self):
for baud in self.sysVar.allBauderate:
self.sysVar.usbSerial.baudrate = baud
try:
if (self.sysVar.usbSerial.isOpen() == True):
self.sysVar.usbSerial.close()
time.sleep(1/4)
pass
if (self.sysVar.usbSerial.isOpen() == False):
self.sysVar.usbSerial.open()
self.testConnect()
pass
else:
raise Exception("fermeture imposible")
pass
pass
except Exception as e:
#print(e)
#print("close")
self.sysVar.usbSerial.close()
time.sleep(1/4)
pass
else:
# connection reussie
self.sucessConnect()
return True
pass
return False
def connection(self):
print("USB : start connect")
try:
#clean connection
self.sysVar.usbSerial.close()
pass
except:
pass
#initialisation connection
self.sysVar.usbSerial = serial.Serial()
self.sysVar.usbSerial.timeout = 0
self.sysVar.usbSerial.baudrate = self.sysVar.usbBauderate
#self.sysVar.usbSerial.setDTR(False)
if (self.sysVar.usbPort == False):
self.recherche()
for port in self.sysVar.usbAllPort:
# test tout les port com
self.sysVar.usbSerial.port = port.device
if (self.sysVar.autoBaud == True):
if (self.autoBaud() == True):
break
pass
else:
try:
time.sleep(1/4)
self.sysVar.usbSerial.open()
self.testConnect()
pass
except:
# echec connection
self.sysVar.usbSerial.close()
pass
else:
# connection reussie
self.sucessConnect()
break
pass
pass
pass
if (self.sysVar.usbBug == False and self.sysVar.usbConnect == False):
# tout a échouer
print("0 : connect usb error")
self.sysVar.usbBug = True
pass
pass
else:
self.sysVar.usbSerial.port = self.sysVar.usbPort
if (self.sysVar.autoBaud == True):
self.autoBaud()
pass
else:
try:
self.sysVar.usbSerial.open()
self.testConnect()
pass
except:
self.sysVar.usbSerial.close()
if (self.sysVar.usbBug == False):
print("1 : connect usb error")
pass
self.bugCom()
pass
else:
# connection reussie
self.sucessConnect()
pass
pass
pass
pass
def update(self):
"""
permet la connection, la reception de donner, et l'envoi d'information
au controlleur
"""
if (self.sysVar.usbConnect == False and self.sysVar.usbBug == False):
self.connection()
pass
if (self.sysVar.usbConnect == True):
try:
#print("2 : connect usb error")
self.lecture()
self.ecriture()
pass
except:
print("3 : connect usb error")
self.bugCom()
pass
try:
self.addLine()
pass
except:
print("4 : connect usb error")
self.bugCom()
pass
pass
pass
def boucle(self):
"""
elle permet de mainteneir le thread en vie
"""
hz = 1/120 # optimisation
hzSleep = 1/10 # optimisation
while (self.sysVar.alive == 0):
time.sleep(hzSleep)
while (self.sysVar.connectType == "USB" and self.sysVar.alive == 0): # fait fonctionner la communication usb
time.sleep(hz)
self.sysVar.usbRun = True
self.update()
pass
self.sysVar.usbRun = False # previent qu'il ne tourne pas
pass
pass
def run(self):
self.boucle()
pass
pass
if __name__ == "__main__":
pass