53 lines
1.6 KiB
Python
53 lines
1.6 KiB
Python
import re
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class HexFile:
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"""Read information from an Intel Hex file."""
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file = 0
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base_address = 0
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handler = 0
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def __init__(self):
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self.file = 0
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self.base_address = 0
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self.handler = 0
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def open(self, filename):
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self.file = open(filename, 'r')
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def set_handler(self, proc):
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self.handler = proc
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def close(self):
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self.file.close()
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def read_lines(self):
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line = self.file.readline()
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while line:
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self.parse_line(line)
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line = self.file.readline()
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def parse_line(self, line):
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m = re.match("^:([0-9a-fA-F]{2})([0-9a-fA-F]{4})([0-9a-fA-F]{2})([0-9a-fA-F]*)([0-9a-fA-F]{2})", line)
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size = int(m.group(1), 16)
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address = int(m.group(2), 16)
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code = int(m.group(3), 16)
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data = m.group(4)
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crc = int(m.group(5), 16)
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if code == 0:
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if self.handler:
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# print('Sending record to {:X}'.format(self.base_address + address))
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self.handler(self.base_address + address, data)
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elif code == 2:
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# Set the base address based on a segment
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self.base_address = int(data, 16) << 4 # shity 80x86 real mode addressing : take the address an do *16 to get the final address
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# print('Setting base address to {:X}'.format(self.base_address))
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elif code == 4:
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# Set the base address given on address[31..16]
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self.base_address = int(data, 16) << 16
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# print('Setting base address to {:X}'.format(self.base_address))
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