def compose_row(self, address, length, row):
address_checksum = checksums.nibble_sum(
utils.make_list(utils.int_to_array(address), length))
data_checksum = checksums.nibble_sum(row)
line = "/{0:04X}{1:02X}{2:02X}{3!s}{4:02X}".format(
address, length, address_checksum, Writer.hex_bytes(row),
data_checksum)
self.last_address = address + length
return line
def check_line(self, line, format_type):
if format_type == DATA:
if line.length != len(line.chunk):
raise hexfile.InvalidRecordLengthError(
"Byte count doesn't match length of actual data.")
addrChecksum = 0
address_checksum = checksums.nibble_sum(
utils.make_list(utils.int_to_array(line.address), line.length))
if line.addrChecksum != address_checksum:
raise hexfile.InvalidRecordChecksumError()
checksum = checksums.nibble_sum(line.chunk)
if line.checksum != checksum:
raise hexfile.InvalidRecordChecksumError()
def compose_row(self, address, length, row):
checksum = checksums.nibble_sum(
utils.make_list(utils.int_to_array(address), 6, ((length + 5) * 2),
row))
line = "%{0:02X}6{1:02X}{2:04X}{3!s}".format((length + 5) * 2,
checksum, address,
Writer.hex_bytes(row))
return line
def check_line(self, line, format_type):
if format_type == DATA:
line.length = (line.length / 2) - 5
checksum = checksums.nibble_sum(
utils.make_list(utils.int_to_array(line.address), 6,
((line.length + 5) * 2), line.chunk))
if line.length != len(line.chunk):
raise hexfile.InvalidRecordLengthError(
"Byte count doesn't match length of actual data.")
if line.checksum != checksum:
raise hexfile.InvalidRecordChecksumError()
elif format_type == SYMBOL:
checksum = checksums.nibble_sum(
utils.make_list(3, ((line.length + 5) * 2),
[ord(b) for b in line.chunk]))
chunk = line.chunk.strip()
address = int(chunk[-4:], 16)
line.address = address
def testNibbleSumCase1():
assert nibble_sum(range(10)) == 45
def testNibbleSumCase2():
assert nibble_sum(range(100)) == 222
def compose_footer(self, meta):
return "/{0:04X}00{1:02X}".format(
self.last_address,
checksums.nibble_sum(utils.int_to_array(self.last_address)))
def testNibbleSumCase1(self):
self.assertEqual(nibble_sum(range(10)), 45)
def testNibbleSumCase2(self):
self.assertEqual(nibble_sum(range(100)), 222)