g4klx/MMDVMHost
1
0
Fork 0
mirror of https://github.com/g4klx/MMDVMHost.git synced 2026-04-05 06:25:24 +00:00
Code Issues Projects Releases Packages Wiki Activity

Merge pull request #378 from juribeparada/nxdn

Browse source 
More Viterbi decoder work for NXDN
This commit is contained in:
Jonathan Naylor 2018-02-01 19:09:38 +00:00 • committed by GitHub
commit 121af6278b
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
4 changed files with 34 additions and 31 deletions
Download patch file Download diff file Expand all files Collapse all files

14
NXDNFACCH1.cpp
View file

@ -84,32 +84,36 @@ bool CNXDNFACCH1::decode(const unsigned char* data, unsigned int offset)
// CUtils::dump("NXDN, FACCH1 de-interleaved", temp1, 18U);
uint8_t temp2[192U];
uint8_t temp2[210U];
unsigned int n = 0U;
unsigned int index = 0U;
for (unsigned int i = 0U; i < NXDN_FACCH1_LENGTH_BITS; i++) {
if (n == PUNCTURE_LIST[index]) {
temp2[n++] = 99U;
temp2[n++] = 1U;
index++;
}
bool b = READ_BIT1(temp1, i);
temp2[n++] = b ? 1U : 0U;
temp2[n++] = b ? 2U : 0U;
}
for (unsigned int i = 0U; i < 8U; i++) {
temp2[n++] = 0U;
}
CNXDNConvolution conv;
conv.start();
n = 0U;
for (unsigned int i = 0U; i < 96U; i++) {
for (unsigned int i = 0U; i < 100U; i++) {
uint8_t s0 = temp2[n++];
uint8_t s1 = temp2[n++];
conv.decode(s0, s1);
}
conv.chainback(m_data, 92U);
conv.chainback(m_data, 96U);
CUtils::dump("NXDN, FACCH1 decoded", m_data, 12U);