Appendix
CRC calculation example: Visual Studio .NET C#
byte crc_8(byte[] msg, int len)
{
byte
crc = 0x00;
byte
data;
bool
flag;
byte
polynom = 0xD5;
for
(
int
i = 0; i < len; i++)
{
data = msg[i];
for
(
int
bit = 0; bit < 8; bit++)
{
flag = (crc & 0x80) == 0x80 ?
true
:
false
;
crc <<= 1;
crc |= (data & 0x80) == 0x80 ? (
byte
)1 : (
byte
)0;
data <<= 1;
if
(flag) crc ^= polynom;
}
}
return
crc;
}
Pin Assignment DATA Port
View on the backside of device.
1=TxD
4=RxD
2=GND
