Bon et bien ça ne fonctionne pas (avec les 2 versions), j'ai l'erreur suivante :
Code : Tout sélectionner
Traceback (most recent call last):
File "rotary.py", line 75, in <module>
call(["amixer", "sset", "Master", RE1.Position])
File "/usr/lib/python2.7/subprocess.py", line 522, in call
return Popen(*popenargs, **kwargs).wait()
File "/usr/lib/python2.7/subprocess.py", line 710, in __init__
errread, errwrite)
File "/usr/lib/python2.7/subprocess.py", line 1335, in _execute_child
raise child_exception
TypeError: execv() arg 2 must contain only strings
Voici le code complet (si ça peux aider...) :
Code : Tout sélectionner
#!/usr/local/bin/python
# m0xpd
# shack.nasties 'at Gee Male dot com'
import RPi.GPIO as GPIO
# setup GPIO options...
GPIO.setmode(GPIO.BOARD)
GPIO.setwarnings(False)
#import urllib
from subprocess import call
class RotaryEnc:
'Base Class for Rotary Encoder on the RPi GPIO Pins'
def __init__(self,PinA,PinB,button,Position,REmin,REmax,inc):
self.PinA = PinA # GPIO Pin for encoder PinA
self.PinB = PinB # GPIO Pin for encoder PinB
self.button = button # GPIO Pin for encoder push button
self.Position = Position # encoder 'position'
self.min = REmin # Max value
self.max = REmax # Min value
self.inc = inc # increment
self.old_button = 1 # start value for previous button state
self.oldPinA = 1 # start value for previous PinA state
self.button_release = 0 # initialise outputs
self.button_down = 0 # initialise outputs
GPIO.setup(self.PinA, GPIO.IN) # setup IO bits...
GPIO.setup(self.PinB, GPIO.IN) #
GPIO.setup(self.button, GPIO.IN) #
#
def read(self): # Function to Read encoder...
encoderPinA=GPIO.input(self.PinA) # get inputs...
encoderPinB=GPIO.input(self.PinB) #
if encoderPinA and not self.oldPinA: # Transition on PinA?
if not encoderPinB: # Yes: is PinB High?
self.Position=self.Position+self.inc # No - so we're going clockwise
if self.Position > self.max: # limit maximum value
self.Position = self.max #
#
else: #
#
self.Position=self.Position-self.inc # Yes - so we're going anti-clockwise
if self.Position < self.min: # limit minimum value
self.Position = self.min #
self.oldPinA=encoderPinA # No: just save current PinA state for next time
#
def read_button(self): # Function to Read encoder button...
button=GPIO.input(self.button) # get input...
if button and not self.old_button: # 'Upward' transition on button?
self.button_release=1 # Yes - so set release output
else: #
self.button_release=0 # No - so clear it
if not button and self.old_button: # 'Downward' transition on button?
self.button_down = 1 # Yes - so set 'down' button
else: #
self.button_down = 0 # No - so clear it
self.old_button=button # Save current button state for next time
# -------------------------------------------------------------------------------------------------------------------
# Here's a simple example of how to use the RotaryEnc Class ...
#
# Set up Rotary Encoder...
# format is : RotaryEnc(PinA,PinB,button,Position,REmin,REmax,inc):
Position = 1 # Position is also used as a variable
RE1 = RotaryEnc(38,37,36,Position,0,248,15) # Instatiate the encoder
# Main Operating Loop...
while True:
RE1.read() # Read the encoder
if Position <> RE1.Position: # has the position changed?
#urllib.urlopen('http://192.168.0.32:9001/status.html?p0=mixer&p1=volume&p2=+5&player=F4:F2:6D:16:FB:B2')
#print RE1.Position # Yes: so print new value
call(["amixer", "sset", "Master", RE1.Position])
Position = RE1.Position # and update it
RE1.read_button() # Read the button
if RE1.button_down: # Has it been pressed?
print 'Button Pressed' # Yes: so print a message
if RE1.button_release: # Has it been released
print 'Button Released' # Yes: so print a message
