2017-02-14 17:56:22 -05:00
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try:
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import uctypes
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except ImportError:
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print("SKIP")
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2017-06-10 13:14:16 -04:00
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raise SystemExit
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2015-12-27 14:15:00 -05:00
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desc = {
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# arr is array at offset 0, of UINT8 elements, array size is 2
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"arr": (uctypes.ARRAY | 0, uctypes.UINT8 | 2),
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# arr2 is array at offset 0, size 2, of structures defined recursively
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"arr2": (uctypes.ARRAY | 0, 2, {"b": uctypes.UINT8 | 0}),
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"arr3": (uctypes.ARRAY | 2, uctypes.UINT16 | 2),
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# aligned
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"arr5": (uctypes.ARRAY | 0, uctypes.UINT32 | 1),
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# unaligned
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"arr6": (uctypes.ARRAY | 1, uctypes.UINT32 | 1),
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"arr7": (uctypes.ARRAY | 0, 1, {"l": uctypes.UINT32 | 0}),
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2021-03-15 09:57:36 -04:00
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"arr8": (uctypes.ARRAY | 1, 1, {"l": uctypes.UINT32 | 0}),
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2015-12-27 14:15:00 -05:00
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}
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data = bytearray(5)
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2021-03-15 09:57:36 -04:00
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S = uctypes.struct(uctypes.addressof(data), desc, uctypes.LITTLE_ENDIAN)
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2015-12-27 14:15:00 -05:00
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# assign byte
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S.arr[0] = 0x11
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print(hex(S.arr[0]))
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assert hex(S.arr[0]) == "0x11"
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# assign word
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S.arr3[0] = 0x2233
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print(hex(S.arr3[0]))
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assert hex(S.arr3[0]) == "0x2233"
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# assign word, with index
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S.arr3[1] = 0x4455
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print(hex(S.arr3[1]))
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assert hex(S.arr3[1]) == "0x4455"
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# assign long, aligned
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S.arr5[0] = 0x66778899
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print(hex(S.arr5[0]))
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assert hex(S.arr5[0]) == "0x66778899"
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print(S.arr5[0] == S.arr7[0].l)
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assert S.arr5[0] == S.arr7[0].l
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# assign long, unaligned
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S.arr6[0] = 0xAABBCCDD
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print(hex(S.arr6[0]))
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assert hex(S.arr6[0]) == "0xaabbccdd"
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print(S.arr6[0] == S.arr8[0].l)
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assert S.arr6[0] == S.arr8[0].l
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