def read_raw(self):
"""
Read ADC value
:return: Raw ADC value.
:rtype: int
"""
return decode_sfp(self.board.uper_io(1, encode_sfp(10, [self.adc_pin])))[1][1]
def read(self):
"""
Read a digital signal value. If GPIO pis in not configure as input, set it to GPIO.PULL_UP pin mode.
:return: Digital signal value: 0 (LOW) or 1 (HIGH).
:rtype: int
"""
if self.direction != GPIO.INPUT:
self.setup(GPIO.INPUT, self.resistor)
return decode_sfp(self.board.uper_io(1, encode_sfp(5, [self.logical_pin])))[1][1]
def transaction(self, write_data, read_from_slave=True):
"""
Perform SPI data transaction.
:param write_data: Data to be shifted on MOSI line.
:type write_data: str
:param read_from_slave: Flag indicating whether the data received on MISO line should be ignored or not. Optional, default True.
:type read_from_slave: bool
:return: Data received on MISO line, if read_from_slave is True.
:rtype: str
"""
res = self.board.uper_io(read_from_slave, encode_sfp(21 + self.port * 10, [write_data, int(read_from_slave)]))
if res:
return decode_sfp(res)[1][0]
def read(self):
"""
Read a digital port value. If GPIO port in not configure as input, set it to GPIO.PULL_UP pin mode.
:return: Digital port value.
:rtype: int
"""
if self.direction != self.INPUT:
self.setup(GPIO.INPUT, self.resistor)
values = decode_sfp(self.board.uper_io(1, encode_sfp(5, [self._logical_pins])))[1][1]
value = 0
for i, bit in enumerate(values):
value |= (ord(bit) & 0x1) << i
return value
def test_simple_sfp_decode(self):
self.assertEqual(sfp.decode_sfp(b'\xd4\x00\x01\xff'),[255, []])
def test_decode_sfp(self):
decode_result = sfp.decode_sfp(b'\xd4\x00i\xff\xc4P09876543210987654321098765432109876543210987654321098765432109876543210987654321J0987654321\x00\x01\xc0@\xc1\x17p\xc2\x01\x11p')
sfp_parameters = [b'09876543210987654321098765432109876543210987654321098765432109876543210987654321', b'0987654321', 0, 1, 64, 6000, 70000]
sfp_command = 255
self.assertEqual(decode_result, [sfp_command, sfp_parameters])
def read_pulse(self, level=GPIO.HIGH, timeout=100000):
if self.direction != self.INPUT:
self.setup(GPIO.INPUT, self.resistor)
return decode_sfp(self.board.uper_io(1, encode_sfp(9, [self.logical_pin, level, timeout])))[1][0]