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Add the LICH processing.

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This commit is contained in:
Jonathan Naylor
2020-10-18 20:44:03 +01:00
parent a00ecbe7d9
commit c549cf3594
7 changed files with 182 additions and 14 deletions
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15
M17Control.cpp
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@@ -45,9 +45,9 @@ const unsigned int INTERLEAVER[] = {
8U, 145U, 98U, 235U, 188U, 325U, 278U, 47U};
const unsigned char SCRAMBLER[] = {
0xD6U, 0xB5U, 0xE2U, 0x30U, 0x82U, 0xFFU, 0x84U, 0x62U, 0xBAU, 0x4EU, 0x96U, 0x90U, 0xD8U, 0x98U, 0xDDU, 0x5DU, 0x0CU,
0xC8U, 0x52U, 0x43U, 0x91U, 0x1DU, 0xF8U, 0x6EU, 0x68U, 0x2FU, 0x35U, 0xDAU, 0x14U, 0xEAU, 0xCDU, 0x76U, 0x19U, 0x8DU,
0xD5U, 0x80U, 0xD1U, 0x33U, 0x87U, 0x13U, 0x57U, 0x18U, 0x2DU, 0x29U, 0x78U, 0xC3U};
0x00U, 0x00U, 0xD6U, 0xB5U, 0xE2U, 0x30U, 0x82U, 0xFFU, 0x84U, 0x62U, 0xBAU, 0x4EU, 0x96U, 0x90U, 0xD8U, 0x98U, 0xDDU,
0x5DU, 0x0CU, 0xC8U, 0x52U, 0x43U, 0x91U, 0x1DU, 0xF8U, 0x6EU, 0x68U, 0x2FU, 0x35U, 0xDAU, 0x14U, 0xEAU, 0xCDU, 0x76U,
0x19U, 0x8DU, 0xD5U, 0x80U, 0xD1U, 0x33U, 0x87U, 0x13U, 0x57U, 0x18U, 0x2DU, 0x29U, 0x78U, 0xC3U};
// #define DUMP_M17
@@ -417,7 +417,7 @@ bool CM17Control::writeModem(unsigned char* data, unsigned int len)
unsigned char netData[M17_LICH_LENGTH_BYTES + M17_FN_LENGTH_BYTES + M17_PAYLOAD_LENGTH_BYTES + M17_CRC_LENGTH_BYTES];
m_rfLICH.getNetworkData(netData + 0U);
m_rfLICH.getNetwork(netData + 0U);
// Copy the FN and payload from the frame
::memcpy(netData + M17_LICH_LENGTH_BYTES, frame, M17_FN_LENGTH_BYTES + M17_PAYLOAD_LENGTH_BYTES);
@@ -507,7 +507,7 @@ void CM17Control::writeNetwork()
m_networkWatchdog.start();
if (m_netState == RS_NET_IDLE) {
m_netLICH.setNetworkData(netData);
m_netLICH.setNetwork(netData);
std::string source = m_netLICH.getSource();
std::string dest = m_netLICH.getDest();
@@ -725,8 +725,9 @@ void CM17Control::decorrelator(const unsigned char* in, unsigned char* out) cons
assert(in != NULL);
assert(out != NULL);
for (unsigned int i = M17_SYNC_LENGTH_BYTES; i < M17_FRAME_LENGTH_BYTES; i++)
out[i] = in[i] ^ SCRAMBLER[i - M17_SYNC_LENGTH_BYTES];
for (unsigned int i = M17_SYNC_LENGTH_BYTES; i < M17_FRAME_LENGTH_BYTES; i++) {
out[i] = in[i] ^ SCRAMBLER[i];
}
}
bool CM17Control::openFile()