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Clean up the CRC routines a little.

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This commit is contained in:
Jonathan Naylor
2016-02-22 20:10:18 +00:00
parent 0881df603d
commit 7852bd53b5
3 changed files with 2 additions and 25 deletions
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23
CRC.cpp
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@@ -118,6 +118,7 @@ const uint16_t CCITT16_TABLE2[] = {
0xEF1F, 0xFF3E, 0xCF5D, 0xDF7C, 0xAF9B, 0xBFBA, 0x8FD9, 0x9FF8,
0x6E17, 0x7E36, 0x4E55, 0x5E74, 0x2E93, 0x3EB2, 0x0ED1, 0x1EF0 };
bool CCRC::checkFiveBit(bool* in, unsigned int tcrc)
{
assert(in != NULL);
@@ -144,28 +145,6 @@ void CCRC::encodeFiveBit(const bool* in, unsigned int& tcrc)
tcrc = total;
}
unsigned char CCRC::encodeEightBit(const unsigned char *in, unsigned int length)
{
assert(in != NULL);
unsigned char crc = 0x00U;
for (unsigned int i = 0U; i < length; i++) {
crc ^= in[i];
for (unsigned int j = 0U; j < 8U; j++) {
if ((crc & 0x80U) == 0x80U) {
crc <<= 1;
crc ^= 0x07U;
} else {
crc <<= 1;
}
}
}
return crc;
}
void CCRC::addCCITT162(unsigned char *in, unsigned int length)
{
assert(in != NULL);