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Use the D-Star correlator receiver.

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This commit is contained in:
Jonathan Naylor
2020-11-09 11:50:02 +00:00
parent 46c0958704
commit 31744a237a
7 changed files with 315 additions and 185 deletions
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DStarTX.cpp
+8 -8
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@@ -201,7 +201,7 @@ m_txDelay(60U) // 100ms
{
::memset(m_modState, 0x00U, 20U * sizeof(q15_t));
m_modFilter.L = DSTAR_RADIO_BIT_LENGTH;
m_modFilter.L = DSTAR_RADIO_SYMBOL_LENGTH;
m_modFilter.phaseLength = GAUSSIAN_0_35_FILTER_PHASE_LEN;
m_modFilter.pCoeffs = GAUSSIAN_0_35_FILTER;
m_modFilter.pState = m_modState;
@@ -219,8 +219,8 @@ void CDStarTX::process()
for (uint16_t i = 0U; i < m_txDelay; i++)
m_poBuffer[m_poLen++] = BIT_SYNC;
} else {
uint8_t dummy;
// Pop the type byte off
uint8_t dummy;
m_buffer.get(dummy);
uint8_t header[DSTAR_HEADER_LENGTH_BYTES];
@@ -258,8 +258,8 @@ void CDStarTX::process()
m_buffer.get(dummy);
for (uint8_t j = 0U; j < 3U; j++) {
for (uint8_t i = 0U; i < DSTAR_EOT_LENGTH_BYTES; i++)
m_poBuffer[m_poLen++] = DSTAR_EOT_BYTES[i];
for (uint8_t i = 0U; i < DSTAR_END_SYNC_LENGTH_BYTES; i++)
m_poBuffer[m_poLen++] = DSTAR_END_SYNC_BYTES[i];
}
m_poPtr = 0U;
@@ -268,11 +268,11 @@ void CDStarTX::process()
if (m_poLen > 0U) {
uint16_t space = io.getSpace();
while (space > (8U * DSTAR_RADIO_BIT_LENGTH)) {
while (space > (8U * DSTAR_RADIO_SYMBOL_LENGTH)) {
uint8_t c = m_poBuffer[m_poPtr++];
writeByte(c);
space -= 8U * DSTAR_RADIO_BIT_LENGTH;
space -= 8U * DSTAR_RADIO_SYMBOL_LENGTH;
if (m_poPtr >= m_poLen) {
m_poPtr = 0U;
@@ -418,7 +418,7 @@ void CDStarTX::txHeader(const uint8_t* in, uint8_t* out) const
void CDStarTX::writeByte(uint8_t c)
{
q15_t inBuffer[8U];
q15_t outBuffer[DSTAR_RADIO_BIT_LENGTH * 8U];
q15_t outBuffer[DSTAR_RADIO_SYMBOL_LENGTH * 8U];
uint8_t mask = 0x01U;
@@ -433,7 +433,7 @@ void CDStarTX::writeByte(uint8_t c)
::arm_fir_interpolate_q15(&m_modFilter, inBuffer, outBuffer, 8U);
io.write(STATE_DSTAR, outBuffer, DSTAR_RADIO_BIT_LENGTH * 8U);
io.write(STATE_DSTAR, outBuffer, DSTAR_RADIO_SYMBOL_LENGTH * 8U);
}
void CDStarTX::setTXDelay(uint8_t delay)