func TestNewRandSCM(t *testing.T) {
bch := crc.NewCRC("BCH", 0, 0x6F63, 0)
for i := 0; i < 512; i++ {
scm, err := NewRandSCM()
if err != nil {
t.Fatal(err)
}
checksum := bch.Checksum(scm[2:])
if checksum != 0 {
t.Fatalf("Failed checksum: %04X\n", checksum)
}
}
}
func NewRandSCM() (pkt []byte, err error) {
bch := crc.NewCRC("BCH", 0, 0x6F63, 0)
pkt = make([]byte, 12)
_, err = rand.Read(pkt)
if err != nil {
return nil, err
}
pkt[0] = 0xF9
pkt[1] = 0x53
pkt[2] &= 0x07
checksum := bch.Checksum(pkt[2:10])
pkt[10] = uint8(checksum >> 8)
pkt[11] = uint8(checksum & 0xFF)
return
}
func NewParser(symbolLength, decimation int, fastMag bool) (p Parser) {
p.Decoder = decode.NewDecoder(NewPacketConfig(symbolLength), decimation, fastMag)
p.CRC = crc.NewCRC("BCH", 0, 0x6F63, 0)
return
}
func NewParser(symbolLength int, fastMag bool) (p Parser) {
p.Decoder = decode.NewDecoder(NewPacketConfig(symbolLength), fastMag)
p.CRC = crc.NewCRC("CCITT", 0xFFFF, 0x1021, 0x1D0F)
return
}
func NewParser(chipLength, decimation int) (p parse.Parser) {
return &Parser{
decode.NewDecoder(NewPacketConfig(chipLength), decimation),
crc.NewCRC("BCH", 0, 0x6F63, 0),
}
}
func NewParser(symbolLength, decimation int) (p parse.Parser) {
return &Parser{
decode.NewDecoder(NewPacketConfig(symbolLength), decimation),
crc.NewCRC("CCITT", 0xFFFF, 0x1021, 0x1D0F),
}
}
func NewParser(symbolLength, decimation int) (p Parser) {
p.Decoder = decode.NewDecoder(NewPacketConfig(symbolLength), decimation)
p.CRC = crc.NewCRC("CCITT", 0xFFFF, 0x1021, 0x1D0F)
return
}