problème ouverture fichier pour carte relais usb k8055

**cFranssen** · 11/10/2011, 20h26

bonjour, j'ai acheter une carte a relais usb k8055 de velleman que j'ai réussi a faire fonctionner dans le terminal (merci google). j'aimerais mtn développer un logiciel en python pour la gérer comme j'en ai envie.

j'ai donc trouver du code sur internet mais j'ai un problème:

j'ai cette ligne :

self.lib = WinDLL("K8055D.dll")

qui devrais ouvrir k8055d.dll mais il me dit toujours que le fichier est introuvable alors qu'il se trouve dans le mm dossier

que faire ?
merci

ps, code complet:

Code :

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'''
 
A Python module created to interact with the Velleman K8055 kit
 
 
 
Created By Fergus Leahy a.k.a. Fergul Magurgul
 
(https://sourceforge.net/projects/pyk8055/)
 
 
 
Copyright (C) 2010  Fergus Leahy (http://py-hole.blogspot.com)
 
 
 
        This program 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.
 
 
 
        This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
 
'''
 
 
 
#  - Requires K8055D.dll to be in the same directory/folder.
 
 
 
from ctypes import *
 
 
 
class device():
 
	def __init__(self,port=0):
 
		print "Loading K8055 dll...",
 
		try:
 
			print "a"
 
			self.lib = WinDLL("K8055D.dll")
 
			print "done."
 
		except:
 
			print "pas trouver"
 
			return
 
		print "Accessing the device on port %d..." % port,
 
		self.lib.OpenDevice(port)
 
		print "done."
 
 
 
	def disconnect(self):
 
		print "Diconnecting the device...",
 
		self.lib.CloseDevice()
 
		print "done."
 
 
 
	def analog_in(self,channel):
 
		print "Checking analogue channel %d..." % channel,
 
		status = self.lib.ReadAnalogChannel(channel)
 
		print "done."
 
		return status
 
 
 
	def analog_all_in(self):
 
		data1,data2 = c_int(),c_int()
 
		print "Checking all analogue channels...",
 
		self.lib.ReadAllAnalog(byref(data1), byref(data2))
 
		print "done."
 
		return data1.value, data2.value
 
 
 
	def analog_clear(self,channel):
 
		print "Clearing analogue channel %d..." % channel,
 
		self.lib.ClearAnalogChannel(channel)
 
		print "done."
 
 
 
	def analog_all_clear(self):
 
		print "Clearing both analogue channels...",
 
		self.lib.ClearAllAnalog()
 
		print "done."
 
 
 
	def analog_out(self,channel, value):
 
		print "Changing the value of analogue channel %d to %d..." % (channel,value),
 
		if 0 <= value <= 255:
 
			self.lib.OutputAnalogChannel(channel,value)
 
			print "done."
 
		else:
 
			print
 
			print "Value must be between (inclusive) 0 and 255"
 
 
 
	def analog_all_out(self,data1,data2):
 
		print "Changing the value of both analogue channels...",
 
		if 0 <= data1 <= 255 and 0 <= data2 <= 255:
 
			self.lib.OutputAllAnalog(data1,data2)
 
			print "done."
 
		else:
 
			print
 
			print "Value must be between (inclusive) 0 and 255"
 
 
 
	def digital_write(self, data):
 
		print "Writing %d to digital channels..." %data,
 
		self.lib.WriteAllDigital(data)
 
		print "done."
 
 
 
	def digital_off(self,channel):
 
		print "Turning digital channel %d OFF..." % channel,
 
		self.lib.ClearDigitalChannel(channel)
 
		print "done."
 
 
 
	def digital_all_off(self):
 
		print "Turning all digital channels OFF...",
 
		self.lib.ClearAllDigital()
 
		print "done."
 
 
 
	def digital_on(self,channel):
 
		print "Turning digital channel %d ON..." % channel,
 
		self.lib.SetDigitalChannel(channel)
 
		print "done."
 
 
 
	def digital_all_on(self):
 
		print "Turning all digital channels ON...",
 
		self.lib.SetAllDigital()
 
		print "done."
 
 
 
	def digital_in(self,channel):
 
		print "Checking digital channel %d..." % channel,
 
		status = self.lib.ReadDigitalChannel(channel)
 
		print "done."
 
		return status
 
 
 
	def digital_all_in(self):
 
		print "Checking all digital channels..." ,
 
		status = self.lib.ReadAllDigital()
 
		print "done."
 
		return status
 
 
 
	def counter_reset(self,channel):
 
		print "Reseting Counter value...",
 
		self.lib.ResetCounter(channel)
 
		print "done,"
 
 
 
	def counter_read(self,channel):
 
		print "Reading Counter value from counter %d..." % channel,
 
		status = self.lib.ReadCounter(channel)
 
		print "done."
 
		return status
 
	def counter_set_debounce(self,channel,time):
 
		if 0<= time <= 5000:
 
			print "Setting Counter %d's debounce time to %dms..." % (channel,time),
 
			self.lib.SetCounterDebounceTime(channel,time)
 
			print "done."
 
		else:
 
			print "Time must be between 0 and 5000ms (inclusive)."
 
 
 
device()

**wiztricks** · 12/10/2011, 13h37

Salut,

Le "même folder" est relatif au répertoire courant de l'utilisateur:

Code :

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>>> sys.path.append('\src')  # je pose le truc "ailleurs"...
>>> import pyk8055
>>> pyk8055.device()
Loading K8055 dll... failed!
Failed to find K8055d.dll in local folde
<pyk8055.device instance at 0x02384C38>

Si vous voulez "dans le répertoire courant du script/module pyk8055.py", il faut modifier l'__init__ par exemple en:

Code :

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        print "Loading K8055 dll...",
        name = os.path.join(os.path.dirname(__file__), "K8055D.dll")
        try:
            self.lib = WinDLL(name)
            print "done."
        except:
            print "failed!"
            print "Failed to find K8055d.dll in local folder."
            return

- W

**cFranssen** · 12/10/2011, 21h28

salut et merci pour ton aide mais maintenant il me dit que "global name 'os' is not defined" et d'ailleur il sort d'ou ce os ?

merci

**mont29** · 12/10/2011, 22h10

Hem… os est un module standard de python, il faut donc faire un import os d’abord…

**cFranssen** · 12/10/2011, 22h27

j'ai la mm erreur qu'avant: il ne trouve pas le fichier k8055d.dll et voici mon code actuelle:

Code :

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from ctypes import *
 
import os
 
 
 
class device():
 
	def __init__(self,port=0):
 
		print "Loading K8055 dll...",
 
		name = os.path.join(os.path.dirname(__file__), "K8055D.dll")
 
		try:
 
			self.lib = WinDLL(name)
 
			print "done."
 
		except:
 
			print "failed!"
 
			print "Failed to find K8055d.dll in local folder."
 
			return
 
		print "Accessing the device on port %d..." % port,
 
		self.lib.OpenDevice(port)
 
		print "done."
 
 
 
	def disconnect(self):
 
		print "Diconnecting the device...",
 
		self.lib.CloseDevice()
 
		print "done."
 
 
 
	def analog_in(self,channel):
 
		print "Checking analogue channel %d..." % channel,
 
		status = self.lib.ReadAnalogChannel(channel)
 
		print "done."
 
		return status
 
 
 
	def analog_all_in(self):
 
		data1,data2 = c_int(),c_int()
 
		print "Checking all analogue channels...",
 
		self.lib.ReadAllAnalog(byref(data1), byref(data2))
 
		print "done."
 
		return data1.value, data2.value
 
 
 
	def analog_clear(self,channel):
 
		print "Clearing analogue channel %d..." % channel,
 
		self.lib.ClearAnalogChannel(channel)
 
		print "done."
 
 
 
	def analog_all_clear(self):
 
		print "Clearing both analogue channels...",
 
		self.lib.ClearAllAnalog()
 
		print "done."
 
 
 
	def analog_out(self,channel, value):
 
		print "Changing the value of analogue channel %d to %d..." % (channel,value),
 
		if 0 <= value <= 255:
 
			self.lib.OutputAnalogChannel(channel,value)
 
			print "done."
 
		else:
 
			print
 
			print "Value must be between (inclusive) 0 and 255"
 
 
 
	def analog_all_out(self,data1,data2):
 
		print "Changing the value of both analogue channels...",
 
		if 0 <= data1 <= 255 and 0 <= data2 <= 255:
 
			self.lib.OutputAllAnalog(data1,data2)
 
			print "done."
 
		else:
 
			print
 
			print "Value must be between (inclusive) 0 and 255"
 
 
 
	def digital_write(self, data):
 
		print "Writing %d to digital channels..." %data,
 
		self.lib.WriteAllDigital(data)
 
		print "done."
 
 
 
	def digital_off(self,channel):
 
		print "Turning digital channel %d OFF..." % channel,
 
		self.lib.ClearDigitalChannel(channel)
 
		print "done."
 
 
 
	def digital_all_off(self):
 
		print "Turning all digital channels OFF...",
 
		self.lib.ClearAllDigital()
 
		print "done."
 
 
 
	def digital_on(self,channel):
 
		print "Turning digital channel %d ON..." % channel,
 
		self.lib.SetDigitalChannel(channel)
 
		print "done."
 
 
 
	def digital_all_on(self):
 
		print "Turning all digital channels ON...",
 
		self.lib.SetAllDigital()
 
		print "done."
 
 
 
	def digital_in(self,channel):
 
		print "Checking digital channel %d..." % channel,
 
		status = self.lib.ReadDigitalChannel(channel)
 
		print "done."
 
		return status
 
 
 
	def digital_all_in(self):
 
		print "Checking all digital channels..." ,
 
		status = self.lib.ReadAllDigital()
 
		print "done."
 
		return status
 
 
 
	def counter_reset(self,channel):
 
		print "Reseting Counter value...",
 
		self.lib.ResetCounter(channel)
 
		print "done,"
 
 
 
	def counter_read(self,channel):
 
		print "Reading Counter value from counter %d..." % channel,
 
		status = self.lib.ReadCounter(channel)
 
		print "done."
 
		return status
 
	def counter_set_debounce(self,channel,time):
 
		if 0<= time <= 5000:
 
			print "Setting Counter %d's debounce time to %dms..." % (channel,time),
 
			self.lib.SetCounterDebounceTime(channel,time)
 
			print "done."
 
		else:
 
			print "Time must be between 0 and 5000ms (inclusive)."

merci

**wiztricks** · 13/10/2011, 16h55

Salut,

Il n'y a pas de problème particulier avec le code...
Mais plutôt sur comment vous le lancez.

Pourriez vous nous montrer la suite de commandes que vous effectuez depuis le lancement de l'interpréteur Python?

- W

problème ouverture fichier pour carte relais usb k8055

Python

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