def get_pressure():
def handler(_cmd, _data, _error):
global pressure
pressure = ObjCInstance(_data).pressure()
handler_block = ObjCBlock(handler,
restype=None,
argtypes=[c_void_p, c_void_p, c_void_p])
CMAltimeter = ObjCClass('CMAltimeter')
NSOperationQueue = ObjCClass('NSOperationQueue')
if not CMAltimeter.isRelativeAltitudeAvailable():
print('This device has no barometer.')
return
altimeter = CMAltimeter.new()
main_q = NSOperationQueue.mainQueue()
altimeter.startRelativeAltitudeUpdatesToQueue_withHandler_(
main_q, handler_block)
#print('Started altitude updates.')
try:
while pressure is None:
pass
finally:
altimeter.stopRelativeAltitudeUpdates()
#print('Updates stopped.')
return pressure
def get_pressure():
''' Obter a pressão atmosférica do barómetro do próprio dispositivo, se
existir '''
def handler(_cmd, _data, _error):
global pressure
pressure = ObjCInstance(_data).pressure()
handler_block = ObjCBlock(handler,
restype=None,
argtypes=[c_void_p, c_void_p, c_void_p])
CMAltimeter = ObjCClass('CMAltimeter')
NSOperationQueue = ObjCClass('NSOperationQueue')
if not CMAltimeter.isRelativeAltitudeAvailable():
# print('This device has no barometer.')
return None
altimeter = CMAltimeter.new()
main_q = NSOperationQueue.mainQueue()
altimeter.startRelativeAltitudeUpdatesToQueue_withHandler_(
main_q, handler_block)
try:
while pressure is None:
pass
finally:
altimeter.stopRelativeAltitudeUpdates()
return pressure.floatValue() * 7.5006375541921
def main():
num_samples = 1000000
arrayA = []
arrayM = []
#arrayG = []
arrayP = []
arrayJ = []
arrayGPS = [] #GPS
dataArray = []
CMAltimeter = ObjCClass('CMAltimeter')
NSOperationQueue = ObjCClass('NSOperationQueue')
if not CMAltimeter.isRelativeAltitudeAvailable():
print('This device has no barometer.')
return
altimeter = CMAltimeter.new()
main_q = NSOperationQueue.mainQueue()
altimeter.startRelativeAltitudeUpdatesToQueue_withHandler_(
main_q, handler_block)
motion.start_updates()
location.start_updates() # GPS
print("Logging start...")
sleep(1.0)
for i in range(num_samples):
sleep(0.05)
a = motion.get_user_acceleration()
m = motion.get_magnetic_field()
j = motion.get_attitude()
gps = location.get_location() # GPS
if a[1] > 0.8:
break
dataArray.append([relativeAltitude, a[2], m[0], m[1]])
arrayA.append(a)
arrayM.append(m)
arrayJ.append(j)
arrayP.append(relativeAltitude)
arrayGPS.append(gps) #GPS
motion.stop_updates()
location.stop_updates() # GPS
altimeter.stopRelativeAltitudeUpdates()
print("Logging stop and Saving start...")
import pickle
f = open('yokohama.serialize', 'wb')
#pickle.dump([arrayA, arrayM, arrayP],f)
pickle.dump([arrayA, arrayM, arrayJ, arrayP, arrayGPS], f) #GPS
f.close
print("Saving is finished.")
x_values = [x * 0.05 for x in range(len(dataArray))]
for i, color, label in zip(range(3), 'rgb', 'XYZ'):
plt.plot(x_values, [g[i] for g in arrayM], color, label=label, lw=2)
plt.grid(True)
plt.xlabel('t')
plt.ylabel('G')
plt.gca().set_ylim([-100, 100])
plt.legend()
plt.show()
def main():
CMAltimeter = ObjCClass('CMAltimeter')
NSOperationQueue = ObjCClass('NSOperationQueue')
if not CMAltimeter.isRelativeAltitudeAvailable():
print('This device has no barometer.')
return
altimeter = CMAltimeter.new()
main_q = NSOperationQueue.mainQueue()
altimeter.startRelativeAltitudeUpdatesToQueue_withHandler_(main_q, handler_block)
print('Started altitude updates.')
try:
while True:
pass
finally:
altimeter.stopRelativeAltitudeUpdates()
print('Updates stopped.')