MMDVM/MMDVMHost
1
0
Fork 0
mirror of https://github.com/g4klx/MMDVMHost synced 2025-12-21 23:45:49 +08:00
Code Issues Packages Projects Releases Wiki Activity

Decode and encode the System Fusion FICH.

Browse Source
This commit is contained in:
Jonathan Naylor
2016-02-23 19:30:35 +00:00
parent 6792894c00
commit dc819b8821
10 changed files with 219 additions and 74 deletions
Download Patch File Download Diff File Expand all files Collapse all files

20
CRC.cpp
View File

@@ -238,23 +238,3 @@ unsigned char CCRC::crc8(const unsigned char *in, unsigned int length)
return crc;
}
bool CCRC::crcFICH(const unsigned char* fich)
{
assert(fich != NULL);
union {
uint16_t crc16;
uint8_t crc8[2U];
};
crc16 = 0U;
crc16 = (uint16_t(crc8[0U]) << 8) ^ CCITT16_TABLE2[crc8[1U] ^ fich[0U]];
crc16 = (uint16_t(crc8[0U]) << 8) ^ CCITT16_TABLE2[crc8[1U] ^ fich[1U]];
crc16 = (uint16_t(crc8[0U]) << 8) ^ CCITT16_TABLE2[crc8[1U] ^ fich[2U]];
crc16 = (uint16_t(crc8[0U]) << 8) ^ CCITT16_TABLE2[crc8[1U] ^ fich[3U]];
crc16 = ~crc16;
return crc8[0U] == fich[5U] && crc8[1U] == fich[4U];
}