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test_scapy_can.py
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#### Packet with big endian signals: | |
class testFrame4(Packet): | |
fields_desc = [ | |
SignalField("sig0" ,default=0, start=1 , size=2 , fmt=">B"), | |
SignalField("sig1" ,default=0, start=7 , size=6 , fmt=">B"), | |
SignalField("sig2" ,default=0, start=15, size=11, fmt=">B"), | |
SignalField("sig3" ,default=0, start=20, size=12, fmt=">B"), | |
SignalField("sig4" ,default=0, start=24, size=9 , fmt=">B"), | |
SignalField("sig5" ,default=0, start=50, size=3 , fmt=">B"), | |
SignalField("sig6" ,default=0, start=53, size=3 , fmt=">B"), | |
SignalField("sig7" ,default=0, start=47, size=10, fmt=">B"), | |
SignalField("sig8" ,default=0, start=58, size=3 , fmt=">B"), | |
SignalField("sig9" ,default=0, start=61, size=3 , fmt=">B"), | |
SignalField("sig10",default=0, start=63, size=2 , fmt=">B") | |
] | |
pkt = testFrame4() | |
pkt.sig0 = 1 | |
pkt.sig1 = 35 | |
pkt.sig2 = 0 | |
pkt.sig3 = 2048 | |
pkt.sig4 = 256 | |
pkt.sig5 = 1 | |
pkt.sig6 = 0 | |
pkt.sig7 = 520 | |
pkt.sig8 = 0 | |
pkt.sig9 = 0 | |
pkt.sig10 = 0 | |
assert(pkt) == bytearray([141, 0, 16, 1, 0, 130, 1, 0]) | |
#### Packet with big little signals: | |
class testFrame5(Packet): | |
fields_desc = [ | |
SignalField("secSig1", default=0, start=60, size=2 , fmt="<B"), | |
SignalField("secSig2", default=0, start=55, size=1 , fmt="<B"), | |
SignalField("secSig3", default=0, start=20, size=4 , fmt="<B"), | |
SignalField("secSig4", default=0, start=62, size=2 , fmt="<B"), | |
SignalField("secSig5", default=0, start=34, size=3 , fmt="<B"), | |
SignalField("secSig6", default=0, start=37, size=3 , fmt="<B"), | |
SignalField("secSig7", default=0, start=59, size=1 , fmt="<b"), | |
SignalField("secSig8", default=0, start=56, size=3 , fmt="<B"), | |
SignalField("secSig9", default=0, start=52, size=3 , fmt="<B"), | |
SignalField("secSig10", default=0, start=8 , size=12, fmt="<B"), | |
SignalField("secSig11", default=0, start=24, size=10, fmt="<b"), | |
SignalField("secSig12", default=0, start=0 , size=8 , fmt="<B") | |
] | |
pkt = testFrame5() | |
pkt.secSig1 = 0 | |
pkt.secSig2 = 0 | |
pkt.secSig3 = 0 | |
pkt.secSig4 = 2 | |
pkt.secSig5 = 0 | |
pkt.secSig6 = 0 | |
pkt.secSig7 = 0 | |
pkt.secSig8 = 3 | |
pkt.secSig9 = 1 | |
pkt.secSig10 = 1280 | |
pkt.secSig11 = -144 # negative values may not be supported yet? | |
pkt.secSig12 = 12 | |
assert(pkt) == bytearray([0x0c, 0x00, 0x05, 0x70, 0x03, 0x00, 0x10, 0x83]) | |
class testFrame6(Packet): | |
fields_desc = [ | |
SignalField("floatSignal2", default=0, start=32, size=32 fmt="<f"), | |
SignalField("floatSignal1", default=0, start=7 , size=32 fmt=">f") | |
] | |
pkt.floatSignal1 = 5.424999835668132e-05 | |
pkt.floatSignal2 = 6.176799774169922 | |
pkt = testFrame6() | |
assert(pkt) == bytearray([0x38, 0x63, 0x8A, 0x7E, 0x58, 0xA8, 0xC5, 0x40]) | |
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Everything is correct and works