kopia lustrzana https://github.com/micropython/micropython
56 wiersze
1.3 KiB
Python
56 wiersze
1.3 KiB
Python
try:
|
|
import uctypes
|
|
except ImportError:
|
|
print("SKIP")
|
|
raise SystemExit
|
|
|
|
desc = {
|
|
# arr is array at offset 0, of UINT8 elements, array size is 2
|
|
"arr": (uctypes.ARRAY | 0, uctypes.UINT8 | 2),
|
|
# arr2 is array at offset 0, size 2, of structures defined recursively
|
|
"arr2": (uctypes.ARRAY | 0, 2, {"b": uctypes.UINT8 | 0}),
|
|
"arr3": (uctypes.ARRAY | 2, uctypes.UINT16 | 2),
|
|
# aligned
|
|
"arr5": (uctypes.ARRAY | 0, uctypes.UINT32 | 1),
|
|
# unaligned
|
|
"arr6": (uctypes.ARRAY | 1, uctypes.UINT32 | 1),
|
|
"arr7": (uctypes.ARRAY | 0, 1, {"l": uctypes.UINT32 | 0}),
|
|
"arr8": (uctypes.ARRAY | 1, 1, {"l": uctypes.UINT32 | 0}),
|
|
}
|
|
|
|
data = bytearray(6)
|
|
|
|
S = uctypes.struct(uctypes.addressof(data), desc, uctypes.LITTLE_ENDIAN)
|
|
|
|
# assign byte
|
|
S.arr[0] = 0x11
|
|
print(hex(S.arr[0]))
|
|
assert hex(S.arr[0]) == "0x11"
|
|
|
|
# assign word
|
|
S.arr3[0] = 0x2233
|
|
print(hex(S.arr3[0]))
|
|
assert hex(S.arr3[0]) == "0x2233"
|
|
|
|
# assign word, with index
|
|
S.arr3[1] = 0x4455
|
|
print(hex(S.arr3[1]))
|
|
assert hex(S.arr3[1]) == "0x4455"
|
|
|
|
# assign long, aligned
|
|
S.arr5[0] = 0x66778899
|
|
print(hex(S.arr5[0]))
|
|
assert hex(S.arr5[0]) == "0x66778899"
|
|
|
|
print(S.arr5[0] == S.arr7[0].l)
|
|
assert S.arr5[0] == S.arr7[0].l
|
|
|
|
|
|
# assign long, unaligned
|
|
S.arr6[0] = 0xAABBCCDD
|
|
print(hex(S.arr6[0]))
|
|
assert hex(S.arr6[0]) == "0xaabbccdd"
|
|
|
|
print(S.arr6[0] == S.arr8[0].l)
|
|
assert S.arr6[0] == S.arr8[0].l
|