I've built a LED Matrix (14x9) out of LPD8806 LED Stripes and i want it to display an animation and simultanously i want one "LEDpixel" which i can move by Keyboard Inputs. By now it's kinda working.
Both threads are running and doing what i expect them to do, except: the LEDpixel i want to move by Keyboard only lights up at the moment of Input then goes off again until the next input.
The getInput function actually does work like that, when run on its own. I can't see why it doesn't in this case.
Also: How can i end both threads while the program is running? So far it only ends the getInput function by pressing "q". The ledAction function keeps on spinning and Ctrl-C isnt quitting it.
I'm quite new to Python (and to programming anyway), so any help would be very appreciated.
Let me know if there's something unclear.
Thanks, f.
Here's the Code:
Code: Select all
from raspledstrip.ledstrip import *
import time
import threading
from threading import Thread
led = LEDStrip(126)
class _Getch:
"""Gets a single character from standard input. Does not echo to the screen."""
def __init__(self):
try:
self.impl = _GetchWindows()
except ImportError:
try:
self.impl = _GetchUnix()
except ImportError:
self.impl = _GetchMacCarbon()
def __call__(self): return self.impl()
class _GetchUnix:
def __init__(self):
import tty, sys, termios # import termios now or else you'll get the Unix version on the Mac
def __call__(self):
import sys, tty, termios
fd = sys.stdin.fileno()
old_settings = termios.tcgetattr(fd)
try:
tty.setraw(sys.stdin.fileno())
ch = sys.stdin.read(1)
finally:
termios.tcsetattr(fd, termios.TCSADRAIN, old_settings)
return ch
class _GetchWindows:
def __init__(self):
import msvcrt
def __call__(self):
import msvcrt
return msvcrt.getch()
class _GetchMacCarbon:
"""
A function which returns the current ASCII key that is down;
if no ASCII key is down, the null string is returned. The
page http://www.mactech.com/macintosh-c/chap02-1.html was
very helpful in figuring out how to do this.
"""
def __init__(self):
import Carbon
Carbon.Evt #see if it has this (in Unix, it doesn't)
def __call__(self):
import Carbon
if Carbon.Evt.EventAvail(0x0008)[0]==0: # 0x0008 is the keyDownMask
return ''
else:
#
# The event contains the following info:
# (what,msg,when,where,mod)=Carbon.Evt.GetNextEvent(0x0008)[1]
#
# The message (msg) contains the ASCII char which is
# extracted with the 0x000000FF charCodeMask; this
# number is converted to an ASCII character with chr() and
# returned
#
(what,msg,when,where,mod)=Carbon.Evt.GetNextEvent(0x0008)[1]
return chr(msg & 0x000000FF)
def getInput():
pixel0 = 120
direction = 0;
while True:
led.fillRGB(0,0,0)
led.setRGB(pixel0, 255,248,17)
pixel0 = pixel0 + direction
led.update()
#time.sleep(0.01)
print 'Press a key'
inkey = _Getch()
import sys
for i in xrange(sys.maxint):
k=inkey()
if k<>'':break
print 'you pressed ',k
if k == 'w':
direction = -14
if k == 's':
direction = 14
if k == 'a':
direction = -1
if k == 'd':
direction = 1
print direction
if k == 'q':
break
pixel0 = pixel0 + direction
print pixel0
led.update()
def ledAction():
pixel0 = 120
pixel1 = 1
counter1 = 1
while True:
led.fillRGB(0,0,0)
#stripe 1
if pixel1 < 1 or pixel1 > 12:
counter1 = counter1 * -1
led.setRGB(pixel1, 55,48,117)
#led.update()
#time.sleep(0.01)
pixel1 = pixel1 + counter1
led.update()
time.sleep(0.02)
if __name__== '__main__':
Thread(target = getInput).start()
Thread(target = ledAction).start()
###
