def test_serialport_parse_input(chip):
packets = chip.get_configuration_packets(Packet.CONFIG_READ_PACKET)
fpackets = [SerialPort._format_UART(p) for p in packets]
bytestream = b''.join(SerialPort.format_bytestream(fpackets))
result = SerialPort._parse_input(bytestream)
expected = packets
assert result == expected
def test_serialport_parse_input_dropped_stopstart_bytes(chip):
packets = chip.get_configuration_packets(Packet.CONFIG_READ_PACKET)
fpackets = [SerialPort._format_UART(p) for p in packets]
bytestream = b''.join(SerialPort.format_bytestream(fpackets))
# Drop the first stop byte
bytestream_faulty = bytestream[:9] + bytestream[11:]
#skipped = [(slice(0, 18), bytestream_faulty[:18])]
result = SerialPort._parse_input(bytestream_faulty)
expected = packets[2:]
assert result == expected
def test_serialport_parse_input_dropped_data_byte(chip):
# Test whether the parser can recover from dropped bytes
packets = chip.get_configuration_packets(Packet.CONFIG_READ_PACKET)
fpackets = [SerialPort._format_UART(p) for p in packets]
bytestream = b''.join(SerialPort.format_bytestream(fpackets))
# Drop a byte in the first packet
bytestream_faulty = bytestream[:5] + bytestream[6:]
result = SerialPort._parse_input(bytestream_faulty)
#skipped = [(slice(0, 9), bytestream_faulty[0:9])]
expected = packets[1:]
assert result == expected
def test_serialport_format_bytestream(chip):
packets = chip.get_configuration_packets(Packet.CONFIG_READ_PACKET)
fpackets = [SerialPort._format_UART(p) for p in packets]
result = SerialPort.format_bytestream(fpackets[:1])
assert result == fpackets[:1]
result = SerialPort.format_bytestream(fpackets[:2])
assert result == [b''.join(fpackets[:2])]
test_total_packets = 2000
result = SerialPort.format_bytestream(fpackets[:1]*test_total_packets)
expected = []
total_packets = test_total_packets
while total_packets >= int(SerialPort.max_write/SerialPort.fpga_packet_size):
expected.append(b''.join(fpackets[:1]*int(SerialPort.max_write/SerialPort.fpga_packet_size)))
total_packets -= int(SerialPort.max_write/SerialPort.fpga_packet_size)
if total_packets > 0:
expected.append(b''.join(fpackets[:1]*int(total_packets)))
assert result == expected
def test_serialport_format_UART():
chip = Chip(2, 0)
packet = chip.get_configuration_packets(Packet.CONFIG_READ_PACKET)[10]
result = SerialPort._format_UART(packet)
expected = b'\x73' + packet.bytes() + b'\x00\x71'
assert result == expected