def reinterpret_bits_to_hstruct__val(val: HValue, hStructT: HStruct):
"""
Reinterpret signal of type Bits to signal of type HStruct
"""
container = hStructT.from_py(None)
offset = 0
for f in hStructT.fields:
t = f.dtype
width = t.bit_length()
if f.name is not None:
v = val[(width + offset):offset]
v = v._reinterpret_cast(t)
setattr(container, f.name, v)
offset += width
return container
def test_const_size_stream(self, dataWidth, frame_len, randomize):
T = HStruct(
(HStream(Bits(8), frame_len=frame_len), "frame0"),
(uint16_t, "footer"),
)
u = self.mySetUp(dataWidth, T, randomize, use_strb=True)
u.dataIn._ag.data.extend(
packAxiSFrame(dataWidth,
T.from_py({"frame0": [i + 1 for i in range(frame_len)],
"footer": 2}),
withStrb=True,
)
)
t = 20
if randomize:
t *= 3
self.runMatrixSim2(t, dataWidth, frame_len, randomize)
off, f = axis_recieve_bytes(u.dataOut.frame0)
self.assertEqual(off, 0)
self.assertValSequenceEqual(f, [i + 1 for i in range(frame_len)])
self.assertValSequenceEqual(u.dataOut.footer._ag.data, [2])
def test_stream_and_footer(self, dataWidth, frame_len, prefix_suffix_as_padding, randomize):
"""
:note: Footer separation is tested in AxiS_footerSplitTC
and this test only check that the AxiS_frameParser can connect
wires correctly
"""
prefix_padding, suffix_padding = prefix_suffix_as_padding
T = HStruct(
(HStream(Bits(8)), "frame0"),
(uint16_t, "footer"),
)
fieldsToUse = set()
if not prefix_padding:
fieldsToUse.add("frame0")
if not suffix_padding:
fieldsToUse.add("footer")
_T = HdlType_select(T, fieldsToUse)
u = self.mySetUp(dataWidth, _T, randomize, use_strb=True)
v = T.from_py({
"frame0": [i + 1 for i in range(frame_len)],
"footer": frame_len + 1
})
u.dataIn._ag.data.extend(
packAxiSFrame(dataWidth, v, withStrb=True)
)
t = 20
if randomize:
t *= 3
self.runMatrixSim2(t, dataWidth, frame_len, randomize)
if not prefix_padding:
off, f = axis_recieve_bytes(u.dataOut.frame0)
self.assertEqual(off, 0)
self.assertValSequenceEqual(f, [i + 1 for i in range(frame_len)])
if not suffix_padding:
self.assertValSequenceEqual(u.dataOut.footer._ag.data, [frame_len + 1])
