mirror of https://github.com/openXC7/prjxray.git
56 lines
1.4 KiB
Python
56 lines
1.4 KiB
Python
# Break frames into WORD_SIZE bit words.
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WORD_SIZE_BITS = 32
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# How many 32-bit words for frame in a 7-series bitstream?
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FRAME_WORD_COUNT = 101
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def load_bitdata(f):
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""" Read bit file and return bitdata map.
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bitdata is a map of of two sets.
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The map key is the frame address.
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The first sets are the word columns that have any bits set.
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Word columsn are WORD_SIZE_BITS wide.
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The second sets are bit index within the frame and word if it is set.
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"""
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bitdata = dict()
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for line in f:
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line = line.split("_")
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frame = int(line[1], 16)
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wordidx = int(line[2], 10)
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bitidx = int(line[3], 10)
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if frame not in bitdata:
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bitdata[frame] = set(), set()
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bitdata[frame][0].add(wordidx)
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bitdata[frame][1].add(wordidx * WORD_SIZE_BITS + bitidx)
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return bitdata
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# used by segprint
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# TODO: merge these
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def load_bitdata2(f):
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# these are not compatible
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# return bitstream.load_bitdata(open(bits_file, "r"))
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bitdata = dict()
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for line in f:
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line = line.split("_")
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frame = int(line[1], 16)
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wordidx = int(line[2], 10)
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bitidx = int(line[3], 10)
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if frame not in bitdata:
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bitdata[frame] = dict()
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if wordidx not in bitdata[frame]:
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bitdata[frame][wordidx] = set()
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bitdata[frame][wordidx].add(bitidx)
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return bitdata
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