47 lines
1.1 KiB
Python
Executable File
47 lines
1.1 KiB
Python
Executable File
#!/usr/bin/env python3
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import argparse
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import struct
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import sys
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from lib.dump import DUMP_MAGIC, DUMP_OFFSET, DUMP_SIZE
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def error(msg):
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print(msg, file=sys.stderr)
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def main():
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# parse the arguments
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ap = argparse.ArgumentParser(description="""
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Extract a crash dump from an external flash image and output
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the same format produced by the D21 g-code.
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""")
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ap.add_argument('image')
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args = ap.parse_args()
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# read the image
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off = DUMP_OFFSET
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with open(args.image, 'rb') as fd:
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fd.seek(off)
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data = fd.read(DUMP_SIZE)
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if len(data) != DUMP_SIZE:
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error('incorrect image size')
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return 1
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# check for magic header
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magic, = struct.unpack('<L', data[:4])
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if magic != DUMP_MAGIC:
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error('invalid dump magic or no dump')
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return 1
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# output D21 dump
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print('D21 - read crash dump', end='')
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for i in range(len(data)):
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if i % 16 == 0:
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print('\n{:06x} '.format(off + i), end='')
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print(' {:02x}'.format(data[i]), end='')
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print('\nok')
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if __name__ == '__main__':
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exit(main())
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