Ссылка на оригинал
Сначала установим HDAPS
sudo apt-get install tp-smapi-dkms hdapsd
Затем проверим
cat /sys/devices/platform/hdaps/position (471,504)
И запустим следующий скрипт на Python
import time, subprocess
class Orientation(object):
def __init__(self, readfreq=1):
self.x_init, self.y_init = self.read()
self.x_hist = []
self.y_hist = []
# read in some values to smooth movement
self.collect()
# cooldown makes sure only a single command
# is executed in one movement
self.cooldown = 0
def read(self):
f = open('/sys/bus/platform/devices/hdaps/position')
s = f.read().strip()
f.close()
x, y = s.strip('()').split(',')
return int(x), int(y)
def collect(self, n=10):
# change n for smoothing over longer period
while len(self.x_hist) < n+1:
coords = self.read()
self.x_hist.append(coords[0])
self.y_hist.append(coords[1])
@property
def x_avg(self):
return sum(self.x_hist)/len(self.x_hist)
@property
def y_avg(self):
return sum(self.y_hist)/len(self.y_hist)
def tick(self, timeout=0.1):
# timeout provides the period between "ticks", i.e.
# the frequency of reads and checks on thresholds
self.update() # read in and process new position
# if not in cooldown period, check if thresholds are
# triggerd, and possibly execute a command
if not self.cooldown:
self.execute()
else: # reduce cooldown periode every tick
self.cooldown = self.cooldown - 1
time.sleep(timeout)
def update(self):
self.x, self.y = self.read()
# position relative to the moving average position
self.x_rel, self.y_rel = o.x - o.x_avg, o.y - o.y_avg
# keep a stack of n observations by popping the first
# and appending to the end
self.x_hist.pop(0)
self.x_hist.append(self.x)
self.y_hist.pop(0)
self.y_hist.append(self.y)
def tresholds(self, x_min=-30, x_max=30, y_min=-30, y_max=30):
# check if thresholds are triggerd, turns a tuple with
# four True/False values
triggered = (self.x_rel < x_min, self.x_rel > x_max,
self.y_rel < y_min, self.y_rel > y_max)
return triggered
def execute(self):
t = self.tresholds()
if t == (True, False, False, False):
print 'Detected a forward tilt'
subprocess.call(['cmus-remote', '-v', '-10%'])
self.cooldown = 10
if t == (False, True, False, False):
print 'Detected a backward tilt'
subprocess.call(['cmus-remote', '-v', '+10%'])
self.cooldown = 10
if t == (False, False, True, False):
print 'Detected a left tilt'
subprocess.call(['cmus-remote', '-u'])
self.cooldown = 10
if t == (False, False, False, True):
print 'Detected a right tilt'
subprocess.call(['cmus-remote', '-n'])
self.cooldown = 10
if __name__ == '__main__':
o = Orientation()
while True:
#print o.x_rel, o.y_rel, o.cooldown
o.tick()
Все теперь можно запускать cups и баловаться.
