def read_battery_state(self):
"""Triggers a battery state notification.
N.B. that a :meth:`~notifications` call that registers a
callback for battery state should have been done prior to calling
this method.
"""
if self.callback is None:
warnings.warn("No battery callback is registered!", RuntimeWarning)
libmetawear.mbl_mw_datasignal_read(self.data_signal)
def read_battery_state(self):
"""Triggers a battery state notification.
N.B. that a :meth:`~notifications` call that registers a
callback for battery state should have been done prior to calling
this method.
"""
if self.callback is None:
warnings.warn("No battery callback is registered!", RuntimeWarning)
libmetawear.mbl_mw_datasignal_read(self.data_signal)
def temperature_callback(data):
if data.contents.type_id == DataTypeId.FLOAT:
data_ptr = cast(data.contents.value, POINTER(c_float))
print("Temperature read: {0:.2f} C".format(data_ptr.contents.value))
else:
raise RuntimeError('Incorrect data type id: ' +
str(data.contents.type_id))
# On-Die temperature (channel 0) is always present.
channel = 0
# Subscribe to notifications
data_signal = libmetawear.mbl_mw_multi_chnl_temp_get_temperature_data_signal(
c.board, channel)
fcn_dptr = Fn_DataPtr(temperature_callback)
libmetawear.mbl_mw_datasignal_subscribe(data_signal, fcn_dptr)
for i in range(5):
libmetawear.mbl_mw_datasignal_read(data_signal)
time.sleep(1.0)
# Unsubscribe to notifications
libmetawear.mbl_mw_datasignal_unsubscribe(data_signal)
time.sleep(1.0)
c.disconnect()
