def test_from_two_bytes(self):
for i in range(32766, 32768):
val = to_two_bytes(i)
ret = from_two_bytes(val)
self.assertEqual(ret, i)
self.assertEqual(from_two_bytes(('\xff', '\xff')), 32767)
self.assertEqual(from_two_bytes(('\x7f', '\xff')), 32767)
def test_from_two_bytes(self):
for i in range(32766, 32768):
val = to_two_bytes(i)
ret = from_two_bytes(val)
self.assertEqual(ret, i)
self.assertEqual(from_two_bytes(('\xff', '\xff')), 32767)
self.assertEqual(from_two_bytes(('\x7f', '\xff')), 32767)
def _handle_i2c_message(self, *args, **kwargs):
address = util.from_two_bytes([args[0], args[1]])
if address in self._i2c:
x = self._i2c[address]
if x.callBack is not None:
values = []
for i in range(2, len(args) - 1, 2):
values.append(util.from_two_bytes([args[i], args[i + 1]]))
x.callBack(values)
x.values[values[0]] = values[1:]
def _handle_ping_read(self, pin_nr, *data):
duration = (util.from_two_bytes(data[1:3]) << 24) \
+ (util.from_two_bytes(data[3:5]) << 16) \
+ (util.from_two_bytes(data[5:7]) << 8) \
+ util.from_two_bytes(data[7:9])
ping_distance = duration / 58.2
# We can calculate the distance using an HC-SR04 as 'duration / 58.2'
try:
## CALL CALLBACK
if self.digital[pin_nr].ping_distance != ping_distance:
for a in self._pings:
if a.index == pin_nr:
a._changecb(ping_distance)
self.digital[pin_nr].ping_distance = ping_distance
except IndexError:
raise ValueError