def test_invalid_checksum(self):
"""readResponse rejects frame with invalid checksum"""
pn532 = Pn532Hsu(1)
pn532.begin()
# Bad length checksum
cmd = bytearray([1])
bad_checksum = bytearray([0, 0, 255, 4, 252, 0xD5, 2, 70, 80, 140, 0])
MOCK_UART.read_buf = PN532_ACK + bad_checksum
pn532.writeCommand(header=cmd, body=bytearray())
length, resp = pn532.readResponse()
self.assertGreaterEqual(length, -3, "readResponse did not return Invalid Frame")
def test_invalid_ack(self):
"""writeCommand waits for an ack"""
pn532 = Pn532Hsu(1)
pn532.begin()
# correct ack
MOCK_UART.read_buf = PN532_ACK
ret = pn532.writeCommand(header=bytearray([2]), body=bytearray())
self.assertEqual(0, ret, "writeCommand failed!")
# invalid ack
MOCK_UART.read_buf = [1, 128, 128]
ret = pn532.writeCommand(header=bytearray([2]), body=bytearray())
self.assertEqual(-1, ret, "writeCommand succeeded with invalid ack!")
def test_writeCommand(self):
"""pn532hsu.writeCommand writes command frames correctly"""
pn532 = Pn532Hsu(1)
pn532.begin()
frames = [ # header, body, bytes written
(bytearray([70, 80]), bytearray(), bytearray([0, 0, 255, 3, 253, 0xD4, 70, 80, 150, 0])),
(bytearray([60]), bytearray([2, 3]), bytearray([0, 0, 255, 4, 252, 0xD4, 60, 2, 3, 235, 0])),
(bytearray([50]), bytearray(), bytearray([0, 0, 255, 2, 254, 0xD4, 50, 250, 0])),
]
for frame in frames:
header, body, output = frame
MOCK_UART.reset_mock()
MOCK_UART.read_buf = PN532_ACK
MOCK_UART.write_buf = bytearray()
pn532.writeCommand(header=header, body=body)
self.assertTrue(output in MOCK_UART.write_buf, 'Invalid data written')
def test_readResponse(self):
"""readResponse correctly parses a response frame"""
pn532 = Pn532Hsu(1)
pn532.begin()
frames = [ # cmd resp data resp frame
(bytearray([1]), bytearray([70, 80]), bytearray([0, 0, 255, 4, 252, 0xD5, 2, 70, 80, 147, 0])),
(bytearray([2]), bytearray([60]), bytearray([0, 0, 255, 3, 253, 0xD5, 3, 60, 236, 0]))
]
for frame in frames:
cmd, resp_data, resp_frame = frame
MOCK_UART.reset_mock()
MOCK_UART.read_buf = PN532_ACK + resp_frame
pn532.writeCommand(header=cmd, body=bytearray())
length, resp = pn532.readResponse()
self.assertGreaterEqual(length, 0, "readResponse failed!")
self.assertEqual(len(resp), length, "length did not match response length")
self.assertEqual(resp_data, resp, "Incorrect response")
from pn532pi.interfaces.pn532hsu import Pn532Hsu
keypad = serial.Serial(
port=
'/dev/serial/by-id/usb-Silicon_Labs_CP2104_USB_to_UART_Bridge_Controller_00897CCA-if00-port0',
baudrate=57600)
keypadString = '' # used to build up strings from key pad
lastKeyTime = time.time() # initialize global variable
accessfile = open('/home/pi/pn532pi/access.list', 'r')
logfile = open(
'/tmp/' + datetime.datetime.now().strftime('%Y%m%d-%H%M%S') + '.log', 'w')
PN532_HSU = Pn532Hsu(
'/dev/serial/by-id/usb-Silicon_Labs_CP2102_USB_to_UART_Bridge_Controller_0001-if00-port0'
)
PN532_HSU._serial.setRTS(False) # keep RTS pin high (3.3v) when program starts
PN532_HSU._serial.setDTR(False) # keep DTR pin high (3.3v) when program starts
nfc = Pn532(PN532_HSU)
accesslist = {}
def loadaccessfile():
for line in accessfile:
if line.split(' ')[-1][0:2] == "b'":
accesslist[line.split(' ')[-1].split('\'')[1]] = line.split(' ')[
-3:-1] # key is text of UID, store two things before it
else:
logwrite('skipping accessfile line: ' +
def test_wakeup(self):
"""pn532hsu.wakeup writes some data to the spi port"""
pn532 = Pn532Hsu(Pn532Hsu.RPI_MINI_UART)
pn532.begin()
pn532.wakeup() # check bytes written/transfered
self.assertTrue(MOCK_UART._mock_write.called, "write transaction not called")
def test_begin(self):
"""pn532hsu.begin initializes with the correct parameters"""
pn532 = Pn532Hsu(Pn532Hsu.RPI_MINI_UART)
pn532.begin()
modules['serial'].Serial.assert_called_once_with('/dev/serial0', baudrate=115200, timeout=100) # Mini UART