def test_read_at(self):
"""
read and parse a parameterless AT command
"""
device = FakeReadDevice('\x7E\x00\x05\x88DMY\x01\x8c')
xbee = XBee(device)
info = xbee.wait_read_frame()
expected_info = {'id':'at_response',
'frame_id':'D',
'command':'MY',
'status':'\x01'}
self.assertEqual(info, expected_info)
class TestSendShorthand(unittest.TestCase):
"""
Tests shorthand for sending commands to an XBee provided by
XBee.__getattr__
"""
def setUp(self):
"""
Prepare a fake device to read from
"""
self.ser = FakeDevice()
self.xbee = XBee(self.ser)
def test_send_at_command(self):
"""
Send an AT command with a shorthand call
"""
# Send an AT command
self.xbee.at(frame_id='A', command='MY')
# Expect a full packet to be written to the device
expected_data = '\x7E\x00\x04\x08AMY\x10'
self.assertEqual(self.ser.data, expected_data)
def test_send_at_command_with_param(self):
"""
calling send should write a full API frame containing the
API AT command packet to the serial device.
"""
# Send an AT command
self.xbee.at(frame_id='A', command='MY', parameter='\x00\x00')
# Expect a full packet to be written to the device
expected_data = '\x7E\x00\x06\x08AMY\x00\x00\x10'
self.assertEqual(self.ser.data, expected_data)
def test_shorthand_disabled(self):
"""
When shorthand is disabled, any attempt at calling a
non-existant attribute should raise AttributeError
"""
self.xbee = XBee(self.ser, shorthand=False)
try:
self.xbee.at
except AttributeError:
pass
else:
self.fail("Specified shorthand command should not exist")
def test_send_at_command(self):
"""
calling send should write a full API frame containing the
API AT command packet to the serial device.
"""
serial_port = FakeDevice()
xbee = XBee(serial_port)
# Send an AT command
xbee.send('at', frame_id='A', command='MY')
# Expect a full packet to be written to the device
expected_data = '\x7E\x00\x04\x08AMY\x10'
self.assertEqual(serial_port.data, expected_data)
def test_shorthand_disabled(self):
"""
When shorthand is disabled, any attempt at calling a
non-existant attribute should raise AttributeError
"""
self.xbee = XBee(self.ser, shorthand=False)
try:
self.xbee.at
except AttributeError:
pass
else:
self.fail("Specified shorthand command should not exist")
def test_read_io_data(self):
"""
XBee class should properly read and parse incoming IO data
"""
## Build IO data
# One sample, ADC 0 enabled
# DIO 1,3,5,7 enabled
header = '\x01\x02\xAA'
# First 7 bits ignored, DIO8 low, DIO 0-7 alternating
# ADC0 value of 255
sample = '\x00\xAA\x00\xFF'
data = header + sample
## Wrap data in frame
# RX frame data
rx_io_resp = '\x83\x00\x01\x28\x00'
device = FakeReadDevice(
'\x7E\x00\x0C'+ rx_io_resp + data + '\xfd'
)
xbee = XBee(device)
#pdb.set_trace()
info = xbee.wait_read_frame()
expected_info = {'id':'rx_io_data',
'source_addr':'\x00\x01',
'rssi':'\x28',
'options':'\x00',
'samples': [{'dio-1':True,
'dio-3':True,
'dio-5':True,
'dio-7':True,
'adc-0':255}]
}
self.assertEqual(info, expected_info)
def setUp(self):
"""
Prepare a fake device to read from
"""
self.ser = FakeDevice()
self.xbee = XBee(self.ser)
