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Revert the demodulator lock stiffening for D-Star and System Fusion.

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This commit is contained in:
Jonathan Naylor
2016-03-29 17:49:52 +01:00
parent 2c11137d27
commit 428dcaa7d6
4 changed files with 17 additions and 41 deletions
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DStarRX.cpp
+9 -19
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@@ -25,10 +25,9 @@
const unsigned int BUFFER_LENGTH = 200U;
const uint32_t PLLMAX = 0x10000U;
const uint32_t PLLINC = PLLMAX / DSTAR_RADIO_BIT_LENGTH;
const uint32_t INC_LOCK = PLLINC / 64U;
const uint32_t INC_UNLOCK = PLLINC / 32U;
const uint32_t PLLMAX = 0x10000U;
const uint32_t PLLINC = PLLMAX / DSTAR_RADIO_BIT_LENGTH;
const uint32_t INC = PLLINC / 32U;
const unsigned int MAX_SYNC_BITS = 50U * DSTAR_DATA_LENGTH_BITS;
@@ -244,7 +243,6 @@ const uint16_t CCITT_TABLE[] = {
CDStarRX::CDStarRX() :
m_pll(0U),
m_prev(false),
m_inc(INC_UNLOCK),
m_rxState(DSRXS_NONE),
m_patternBuffer(0x00U),
m_rxBuffer(),
@@ -266,7 +264,6 @@ void CDStarRX::reset()
{
m_pll = 0U;
m_prev = false;
m_inc = INC_UNLOCK;
m_rxState = DSRXS_NONE;
m_patternBuffer = 0x00U;
m_rxBufferBits = 0U;
@@ -283,9 +280,9 @@ void CDStarRX::samples(const q15_t* samples, uint8_t length)
if (bit != m_prev) {
if (m_pll < (PLLMAX / 2U))
m_pll += m_inc;
m_pll += INC;
else
m_pll -= m_inc;
m_pll -= INC;
}
m_prev = bit;
@@ -336,7 +333,7 @@ void CDStarRX::processNone(bool bit)
// Exact matching of the data sync bit sequence
if (countBits32((m_patternBuffer & DATA_SYNC_MASK) ^ DATA_SYNC_DATA) == 0U) {
DEBUG1("DStarRX: found data sync in None");
locked(true);
io.setDecode(true);
#if defined(WANT_DEBUG)
q15_t min = 16000;
@@ -376,7 +373,7 @@ void CDStarRX::processHeader(bool bit)
unsigned char header[DSTAR_HEADER_LENGTH_BYTES];
bool ok = rxHeader(m_rxBuffer, header);
if (ok) {
locked(true);
io.setDecode(true);
serial.writeDStarHeader(header, DSTAR_HEADER_LENGTH_BYTES);
@@ -404,7 +401,7 @@ void CDStarRX::processData(bool bit)
// Fuzzy matching of the end frame sequences
if (countBits32((m_patternBuffer & END_SYNC_MASK) ^ END_SYNC_DATA) <= END_SYNC_ERRS) {
DEBUG1("DStarRX: Found end sync in Data");
locked(false);
io.setDecode(false);
serial.writeDStarEOT();
@@ -443,7 +440,7 @@ void CDStarRX::processData(bool bit)
m_dataBits--;
if (m_dataBits == 0U) {
DEBUG1("DStarRX: data sync timed out, lost lock");
locked(false);
io.setDecode(false);
serial.writeDStarLost();
@@ -696,10 +693,3 @@ bool CDStarRX::checksum(const uint8_t* header) const
return crc8[0U] == header[DSTAR_HEADER_LENGTH_BYTES - 2U] && crc8[1U] == header[DSTAR_HEADER_LENGTH_BYTES - 1U];
}
void CDStarRX::locked(bool lock)
{
io.setDecode(lock);
m_inc = lock ? INC_LOCK : INC_UNLOCK;
}