More work on the payloads for the different Fusion modes.
This commit is contained in:
parent
5448a5d8d9
commit
e43bc459ea
|
@ -97,12 +97,11 @@ bool CYSFControl::writeModem(unsigned char *data)
|
|||
|
||||
unsigned char fi = fich.getFI();
|
||||
unsigned char fn = fich.getFN();
|
||||
unsigned char ft = fich.getFT();
|
||||
unsigned char dt = fich.getDT();
|
||||
|
||||
LogMessage("YSF, EOT, FI=%X BN=%u BT=%u FN=%u FT=%u DT=%X", fich.getFI(), fich.getBN(), fich.getBT(), fich.getFN(), fich.getFT(), fich.getDT());
|
||||
LogMessage("YSF, EOT, FI=%X FN=%u DT=%X", fi, fn, dt);
|
||||
|
||||
m_payload.decode(data + 2U, fi, fn, ft, dt);
|
||||
m_payload.decode(data + 2U, fi, fn, dt);
|
||||
// m_payload.encode(data + 2U);
|
||||
|
||||
m_frames++;
|
||||
|
@ -140,26 +139,21 @@ bool CYSFControl::writeModem(unsigned char *data)
|
|||
bool ret = m_fich.decode(data + 2U);
|
||||
assert(ret);
|
||||
|
||||
LogMessage("YSF, Valid FICH, FI=%X BN=%u BT=%u FN=%u FT=%u DT=%X", m_fich.getFI(), m_fich.getBN(), m_fich.getBT(), m_fich.getFN(), m_fich.getFT(), m_fich.getDT());
|
||||
unsigned char fi = m_fich.getFI();
|
||||
unsigned char fn = m_fich.getFN();
|
||||
unsigned char dt = m_fich.getDT();
|
||||
|
||||
LogMessage("YSF, Valid FICH, FI=%X FN=%u DT=%X", m_fich.getFI(), m_fich.getFN(), m_fich.getDT());
|
||||
|
||||
m_payload.decode(data + 2U, fi, fn, dt);
|
||||
// payload.encode(data + 2U);
|
||||
} else {
|
||||
LogMessage("YSF, invalid FICH");
|
||||
|
||||
// Reconstruct FICH based on the last valid frame
|
||||
m_fich.setFI(0x01U); // Communication channel
|
||||
|
||||
unsigned char fn = m_fich.getFN();
|
||||
fn = (fn + 1U) % 8U;
|
||||
m_fich.setFN(fn);
|
||||
}
|
||||
|
||||
unsigned char fi = m_fich.getFI();
|
||||
unsigned char fn = m_fich.getFN();
|
||||
unsigned char ft = m_fich.getFT();
|
||||
unsigned char dt = m_fich.getDT();
|
||||
|
||||
m_payload.decode(data + 2U, fi, fn, ft, dt);
|
||||
// payload.encode(data + 2U);
|
||||
|
||||
m_frames++;
|
||||
|
||||
if (m_duplex) {
|
||||
|
|
39
YSFFICH.cpp
39
YSFFICH.cpp
|
@ -169,26 +169,11 @@ unsigned char CYSFFICH::getCM() const
|
|||
return (m_fich[0U] >> 2) & 0x03U;
|
||||
}
|
||||
|
||||
unsigned char CYSFFICH::getBN() const
|
||||
{
|
||||
return m_fich[0U] & 0x03U;
|
||||
}
|
||||
|
||||
unsigned char CYSFFICH::getBT() const
|
||||
{
|
||||
return (m_fich[1U] >> 6) & 0x03U;
|
||||
}
|
||||
|
||||
unsigned char CYSFFICH::getFN() const
|
||||
{
|
||||
return (m_fich[1U] >> 3) & 0x07U;
|
||||
}
|
||||
|
||||
unsigned char CYSFFICH::getFT() const
|
||||
{
|
||||
return m_fich[1U] & 0x07U;
|
||||
}
|
||||
|
||||
unsigned char CYSFFICH::getDT() const
|
||||
{
|
||||
return m_fich[2U] & 0x03U;
|
||||
|
@ -200,30 +185,6 @@ void CYSFFICH::setFI(unsigned char fi)
|
|||
m_fich[0U] |= (fi << 6) & 0xC0U;
|
||||
}
|
||||
|
||||
void CYSFFICH::setBN(unsigned char bn)
|
||||
{
|
||||
m_fich[0U] &= 0xFCU;
|
||||
m_fich[0U] |= bn;
|
||||
}
|
||||
|
||||
void CYSFFICH::setBT(unsigned char bt)
|
||||
{
|
||||
m_fich[1U] &= 0x3FU;
|
||||
m_fich[1U] |= (bt << 6) & 0xC0U;
|
||||
}
|
||||
|
||||
void CYSFFICH::setFN(unsigned char fn)
|
||||
{
|
||||
m_fich[1U] &= 0xE7U;
|
||||
m_fich[1U] |= (fn << 3) & 0x1CU;
|
||||
}
|
||||
|
||||
void CYSFFICH::setFT(unsigned char ft)
|
||||
{
|
||||
m_fich[1U] &= 0xF8U;
|
||||
m_fich[1U] |= ft;
|
||||
}
|
||||
|
||||
void CYSFFICH::setMR(unsigned char mr)
|
||||
{
|
||||
m_fich[2U] &= 0xC7U;
|
||||
|
|
|
@ -30,17 +30,10 @@ public:
|
|||
|
||||
unsigned char getFI() const;
|
||||
unsigned char getCM() const;
|
||||
unsigned char getBN() const;
|
||||
unsigned char getBT() const;
|
||||
unsigned char getFN() const;
|
||||
unsigned char getFT() const;
|
||||
unsigned char getDT() const;
|
||||
|
||||
void setFI(unsigned char fi);
|
||||
void setBN(unsigned char bn);
|
||||
void setBT(unsigned char bt);
|
||||
void setFN(unsigned char fn);
|
||||
void setFT(unsigned char ft);
|
||||
void setMR(unsigned char mr);
|
||||
void setVoIP(bool set);
|
||||
|
||||
|
|
423
YSFPayload.cpp
423
YSFPayload.cpp
|
@ -91,7 +91,7 @@ CYSFPayload::~CYSFPayload()
|
|||
delete[] m_downlink;
|
||||
}
|
||||
|
||||
bool CYSFPayload::decode(const unsigned char* bytes, unsigned char fi, unsigned char fn, unsigned char ft, unsigned char dt)
|
||||
bool CYSFPayload::decode(const unsigned char* bytes, unsigned char fi, unsigned char fn, unsigned char dt)
|
||||
{
|
||||
assert(bytes != NULL);
|
||||
|
||||
|
@ -103,15 +103,15 @@ bool CYSFPayload::decode(const unsigned char* bytes, unsigned char fi, unsigned
|
|||
|
||||
// V/D Mode 1
|
||||
if (dt == 0U)
|
||||
return decodeVDMode1(fn, ft);
|
||||
return decodeVDMode1(fn);
|
||||
|
||||
// V/D Mode 2
|
||||
if (dt == 2U)
|
||||
return decodeVDMode2(fn, ft);
|
||||
return decodeVDMode2(fn);
|
||||
|
||||
// Data FR Mode
|
||||
if (dt == 1U)
|
||||
return decodeDataFRMode(fn, ft);
|
||||
return decodeDataFRMode(fn);
|
||||
|
||||
// Voice FR Mode
|
||||
return true;
|
||||
|
@ -126,73 +126,123 @@ void CYSFPayload::encode(unsigned char* bytes)
|
|||
|
||||
bool CYSFPayload::decodeHeader()
|
||||
{
|
||||
unsigned char dch1[45U];
|
||||
unsigned char dch2[45U];
|
||||
unsigned char dch[45U];
|
||||
|
||||
unsigned char* p1 = m_data;
|
||||
unsigned char* p2 = dch1;
|
||||
unsigned char* p3 = dch2;
|
||||
unsigned char* p2 = dch;
|
||||
for (unsigned int i = 0U; i < 5U; i++) {
|
||||
::memcpy(p2, p1, 9U);
|
||||
p1 += 9U; p2 += 9U;
|
||||
::memcpy(p3, p1, 9U);
|
||||
p1 += 9U; p3 += 9U;
|
||||
p1 += 18U; p2 += 9U;
|
||||
}
|
||||
|
||||
CYSFConvolution conv;
|
||||
conv.start();
|
||||
|
||||
// Deinterleave the FICH and send bits to the Viterbi decoder
|
||||
for (unsigned int i = 0U; i < 180U; i++) {
|
||||
unsigned int n = INTERLEAVE_TABLE_9_20[i];
|
||||
uint8_t s0 = READ_BIT1(dch1, n) ? 1U : 0U;
|
||||
uint8_t s0 = READ_BIT1(dch, n) ? 1U : 0U;
|
||||
|
||||
n++;
|
||||
uint8_t s1 = READ_BIT1(dch1, n) ? 1U : 0U;
|
||||
uint8_t s1 = READ_BIT1(dch, n) ? 1U : 0U;
|
||||
|
||||
conv.decode(s0, s1);
|
||||
}
|
||||
|
||||
unsigned char output1[23U];
|
||||
conv.chainback(output1, 176U);
|
||||
unsigned char output[23U];
|
||||
conv.chainback(output, 180U);
|
||||
|
||||
bool ret1 = CCRC::checkCCITT162(output1, 22U);
|
||||
if (ret1) {
|
||||
bool ret = CCRC::checkCCITT162(output, 22U);
|
||||
if (ret) {
|
||||
for (unsigned int i = 0U; i < 20U; i++)
|
||||
output1[i] ^= WHITENING_DATA[i];
|
||||
output[i] ^= WHITENING_DATA[i];
|
||||
|
||||
CUtils::dump("Header/Trailer, valid DCH1", output1, 20U);
|
||||
CUtils::dump("Header/Trailer, Source", output + 0U, 10U);
|
||||
CUtils::dump("Header/Trailer, Destination", output + 10U, 10U);
|
||||
|
||||
if (m_source == NULL)
|
||||
m_source = new unsigned char[10U];
|
||||
if (m_dest == NULL)
|
||||
m_dest = new unsigned char[10U];
|
||||
|
||||
::memcpy(m_source, output + 0U, 10U);
|
||||
::memcpy(m_dest, output + 10U, 10U);
|
||||
|
||||
for (unsigned int i = 0U; i < 20U; i++)
|
||||
output[i] ^= WHITENING_DATA[i];
|
||||
|
||||
CCRC::addCCITT162(output, 22U);
|
||||
output[22U] = 0x00U;
|
||||
|
||||
unsigned char convolved[45U];
|
||||
conv.encode(output, convolved, 180U);
|
||||
|
||||
unsigned char bytes[45U];
|
||||
unsigned int j = 0U;
|
||||
for (unsigned int i = 0U; i < 180U; i++) {
|
||||
unsigned int n = INTERLEAVE_TABLE_9_20[i];
|
||||
|
||||
bool s0 = READ_BIT1(convolved, j) != 0U;
|
||||
j++;
|
||||
|
||||
bool s1 = READ_BIT1(convolved, j) != 0U;
|
||||
j++;
|
||||
|
||||
WRITE_BIT1(bytes, n, s0);
|
||||
|
||||
n++;
|
||||
WRITE_BIT1(bytes, n, s1);
|
||||
}
|
||||
|
||||
p1 = m_data;
|
||||
p2 = bytes;
|
||||
for (unsigned int i = 0U; i < 5U; i++) {
|
||||
::memcpy(p1, p2, 9U);
|
||||
p1 += 18U; p2 += 9U;
|
||||
}
|
||||
}
|
||||
|
||||
conv.start();
|
||||
::memset(output, ' ', 20U);
|
||||
if (m_downlink != NULL)
|
||||
::memcpy(output + 0U, m_downlink, 10U);
|
||||
if (m_uplink != NULL)
|
||||
::memcpy(output + 10U, m_uplink, 10U);
|
||||
for (unsigned int i = 0U; i < 20U; i++)
|
||||
output[i] ^= WHITENING_DATA[i];
|
||||
|
||||
// Deinterleave the FICH and send bits to the Viterbi decoder
|
||||
CCRC::addCCITT162(output, 22U);
|
||||
output[22U] = 0x00U;
|
||||
|
||||
unsigned char convolved[45U];
|
||||
conv.encode(output, convolved, 180U);
|
||||
|
||||
unsigned char bytes[45U];
|
||||
unsigned int j = 0U;
|
||||
for (unsigned int i = 0U; i < 180U; i++) {
|
||||
unsigned int n = INTERLEAVE_TABLE_9_20[i];
|
||||
uint8_t s0 = READ_BIT1(dch2, n) ? 1U : 0U;
|
||||
|
||||
bool s0 = READ_BIT1(convolved, j) != 0U;
|
||||
j++;
|
||||
|
||||
bool s1 = READ_BIT1(convolved, j) != 0U;
|
||||
j++;
|
||||
|
||||
WRITE_BIT1(bytes, n, s0);
|
||||
|
||||
n++;
|
||||
uint8_t s1 = READ_BIT1(dch2, n) ? 1U : 0U;
|
||||
|
||||
conv.decode(s0, s1);
|
||||
WRITE_BIT1(bytes, n, s1);
|
||||
}
|
||||
|
||||
unsigned char output2[23U];
|
||||
conv.chainback(output2, 176U);
|
||||
|
||||
|
||||
bool ret2 = CCRC::checkCCITT162(output2, 22U);
|
||||
if (ret2) {
|
||||
for (unsigned int i = 0U; i < 20U; i++)
|
||||
output2[i] ^= WHITENING_DATA[i];
|
||||
|
||||
CUtils::dump("Header/Trailer, valid DCH2", output2, 20U);
|
||||
p1 = m_data + 9U;
|
||||
p2 = bytes;
|
||||
for (unsigned int i = 0U; i < 5U; i++) {
|
||||
::memcpy(p1, p2, 9U);
|
||||
p1 += 18U; p2 += 9U;
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
bool CYSFPayload::decodeVDMode1(unsigned char fn, unsigned char ft)
|
||||
bool CYSFPayload::decodeVDMode1(unsigned char fn)
|
||||
{
|
||||
unsigned char dch[45U];
|
||||
|
||||
|
@ -206,7 +256,6 @@ bool CYSFPayload::decodeVDMode1(unsigned char fn, unsigned char ft)
|
|||
CYSFConvolution conv;
|
||||
conv.start();
|
||||
|
||||
// Deinterleave the FICH and send bits to the Viterbi decoder
|
||||
for (unsigned int i = 0U; i < 180U; i++) {
|
||||
unsigned int n = INTERLEAVE_TABLE_9_20[i];
|
||||
uint8_t s0 = READ_BIT1(dch, n) ? 1U : 0U;
|
||||
|
@ -218,20 +267,87 @@ bool CYSFPayload::decodeVDMode1(unsigned char fn, unsigned char ft)
|
|||
}
|
||||
|
||||
unsigned char output[23U];
|
||||
conv.chainback(output, 176U);
|
||||
conv.chainback(output, 180U);
|
||||
|
||||
bool ret = CCRC::checkCCITT162(output, 22U);
|
||||
if (ret) {
|
||||
for (unsigned int i = 0U; i < 20U; i++)
|
||||
output[i] ^= WHITENING_DATA[i];
|
||||
|
||||
CUtils::dump("V/D Mode 1, valid DCH", output, 20U);
|
||||
switch (fn) {
|
||||
case 0U:
|
||||
CUtils::dump("V/D Mode 1, Destination", output + 0U, 10U);
|
||||
CUtils::dump("V/D Mode 1, Source", output + 10U, 10U);
|
||||
if (m_dest == NULL)
|
||||
m_dest = new unsigned char[10U];
|
||||
if (m_source == NULL)
|
||||
m_source = new unsigned char[10U];
|
||||
::memcpy(m_dest, output, 10U);
|
||||
::memcpy(m_source, output, 10U);
|
||||
break;
|
||||
case 2U:
|
||||
CUtils::dump("V/D Mode 1, Rem 1+2", output + 0U, 10U);
|
||||
CUtils::dump("V/D Mode 1, Rem 3+4", output + 10U, 10U);
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
return true;
|
||||
if (fn == 1U) {
|
||||
::memset(output, ' ', 20U);
|
||||
|
||||
if (m_downlink != NULL)
|
||||
::memcpy(output + 0U, m_downlink, 10U);
|
||||
|
||||
if (m_uplink != NULL)
|
||||
::memcpy(output + 10U, m_uplink, 10U);
|
||||
|
||||
ret = true;
|
||||
}
|
||||
|
||||
// Data isn't corrupt so regenerate it
|
||||
if (!ret) {
|
||||
for (unsigned int i = 0U; i < 20U; i++)
|
||||
output[i] ^= WHITENING_DATA[i];
|
||||
|
||||
CCRC::addCCITT162(output, 22U);
|
||||
output[22U] = 0x00U;
|
||||
|
||||
unsigned char convolved[45U];
|
||||
conv.encode(output, convolved, 180U);
|
||||
|
||||
unsigned char bytes[45U];
|
||||
unsigned int j = 0U;
|
||||
for (unsigned int i = 0U; i < 180U; i++) {
|
||||
unsigned int n = INTERLEAVE_TABLE_9_20[i];
|
||||
|
||||
bool s0 = READ_BIT1(convolved, j) != 0U;
|
||||
j++;
|
||||
|
||||
bool s1 = READ_BIT1(convolved, j) != 0U;
|
||||
j++;
|
||||
|
||||
WRITE_BIT1(bytes, n, s0);
|
||||
|
||||
n++;
|
||||
WRITE_BIT1(bytes, n, s1);
|
||||
}
|
||||
|
||||
p1 = m_data;
|
||||
p2 = bytes;
|
||||
for (unsigned int i = 0U; i < 5U; i++) {
|
||||
::memcpy(p1, p2, 9U);
|
||||
p1 += 18U; p2 += 9U;
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
bool CYSFPayload::decodeVDMode2(unsigned char fn, unsigned char ft)
|
||||
bool CYSFPayload::decodeVDMode2(unsigned char fn)
|
||||
{
|
||||
unsigned char dch[25U];
|
||||
|
||||
|
@ -245,7 +361,6 @@ bool CYSFPayload::decodeVDMode2(unsigned char fn, unsigned char ft)
|
|||
CYSFConvolution conv;
|
||||
conv.start();
|
||||
|
||||
// Deinterleave the FICH and send bits to the Viterbi decoder
|
||||
for (unsigned int i = 0U; i < 100U; i++) {
|
||||
unsigned int n = INTERLEAVE_TABLE_5_20[i];
|
||||
uint8_t s0 = READ_BIT1(dch, n) ? 1U : 0U;
|
||||
|
@ -288,120 +403,222 @@ bool CYSFPayload::decodeVDMode2(unsigned char fn, unsigned char ft)
|
|||
}
|
||||
}
|
||||
|
||||
if (fn == 2U && m_downlink != NULL) {
|
||||
for (unsigned int i = 0U; i < 10U; i++)
|
||||
output[i] = WHITENING_DATA[i] ^ m_downlink[i];
|
||||
if (fn == 2U) {
|
||||
if (m_downlink != NULL)
|
||||
::memcpy(output, m_downlink, 10U);
|
||||
else
|
||||
::memset(output, ' ', 10U);
|
||||
ret = true;
|
||||
}
|
||||
|
||||
if (fn == 3U && m_uplink != NULL) {
|
||||
for (unsigned int i = 0U; i < 10U; i++)
|
||||
output[i] = WHITENING_DATA[i] ^ m_uplink[i];
|
||||
if (fn == 3U) {
|
||||
if (m_uplink != NULL)
|
||||
::memcpy(output, m_uplink, 10U);
|
||||
else
|
||||
::memset(output, ' ', 10U);
|
||||
ret = true;
|
||||
}
|
||||
|
||||
// Data is corrupt so don't try and regenerate it
|
||||
if (!ret)
|
||||
return false;
|
||||
// Data isn't corrupt so regenerate it
|
||||
if (ret) {
|
||||
for (unsigned int i = 0U; i < 10U; i++)
|
||||
output[i] ^= WHITENING_DATA[i];
|
||||
|
||||
CCRC::addCCITT162(output, 12U);
|
||||
output[12U] = 0x00U;
|
||||
CCRC::addCCITT162(output, 12U);
|
||||
output[12U] = 0x00U;
|
||||
|
||||
unsigned char convolved[25U];
|
||||
conv.encode(output, convolved, 100U);
|
||||
unsigned char convolved[25U];
|
||||
conv.encode(output, convolved, 100U);
|
||||
|
||||
unsigned char bytes[25U];
|
||||
unsigned int j = 0U;
|
||||
for (unsigned int i = 0U; i < 100U; i++) {
|
||||
unsigned int n = INTERLEAVE_TABLE_5_20[i];
|
||||
unsigned char bytes[25U];
|
||||
unsigned int j = 0U;
|
||||
for (unsigned int i = 0U; i < 100U; i++) {
|
||||
unsigned int n = INTERLEAVE_TABLE_5_20[i];
|
||||
|
||||
bool s0 = READ_BIT1(convolved, j) != 0U;
|
||||
j++;
|
||||
bool s0 = READ_BIT1(convolved, j) != 0U;
|
||||
j++;
|
||||
|
||||
bool s1 = READ_BIT1(convolved, j) != 0U;
|
||||
j++;
|
||||
bool s1 = READ_BIT1(convolved, j) != 0U;
|
||||
j++;
|
||||
|
||||
WRITE_BIT1(bytes, n, s0);
|
||||
WRITE_BIT1(bytes, n, s0);
|
||||
|
||||
n++;
|
||||
WRITE_BIT1(bytes, n, s1);
|
||||
n++;
|
||||
WRITE_BIT1(bytes, n, s1);
|
||||
}
|
||||
|
||||
p1 = m_data;
|
||||
p2 = bytes;
|
||||
for (unsigned int i = 0U; i < 5U; i++) {
|
||||
::memcpy(p1, p2, 5U);
|
||||
p1 += 18U; p2 += 5U;
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
p1 = m_data;
|
||||
p2 = bytes;
|
||||
for (unsigned int i = 0U; i < 5U; i++) {
|
||||
::memcpy(p1, p2, 5U);
|
||||
p1 += 18U; p2 += 5U;
|
||||
}
|
||||
|
||||
return true;
|
||||
return false;
|
||||
}
|
||||
|
||||
bool CYSFPayload::decodeDataFRMode(unsigned char fn, unsigned char ft)
|
||||
bool CYSFPayload::decodeDataFRMode(unsigned char fn)
|
||||
{
|
||||
unsigned char dch1[45U];
|
||||
unsigned char dch2[45U];
|
||||
unsigned char dch[45U];
|
||||
|
||||
unsigned char* p1 = m_data;
|
||||
unsigned char* p2 = dch1;
|
||||
unsigned char* p3 = dch2;
|
||||
unsigned char* p2 = dch;
|
||||
for (unsigned int i = 0U; i < 5U; i++) {
|
||||
::memcpy(p2, p1, 9U);
|
||||
p1 += 9U; p2 += 9U;
|
||||
::memcpy(p3, p1, 9U);
|
||||
p1 += 9U; p3 += 9U;
|
||||
p1 += 18U; p2 += 9U;
|
||||
}
|
||||
|
||||
CYSFConvolution conv;
|
||||
conv.start();
|
||||
|
||||
// Deinterleave the FICH and send bits to the Viterbi decoder
|
||||
for (unsigned int i = 0U; i < 180U; i++) {
|
||||
unsigned int n = INTERLEAVE_TABLE_9_20[i];
|
||||
uint8_t s0 = READ_BIT1(dch1, n) ? 1U : 0U;
|
||||
uint8_t s0 = READ_BIT1(dch, n) ? 1U : 0U;
|
||||
|
||||
n++;
|
||||
uint8_t s1 = READ_BIT1(dch1, n) ? 1U : 0U;
|
||||
uint8_t s1 = READ_BIT1(dch, n) ? 1U : 0U;
|
||||
|
||||
conv.decode(s0, s1);
|
||||
}
|
||||
|
||||
unsigned char output1[23U];
|
||||
conv.chainback(output1, 176U);
|
||||
unsigned char output[23U];
|
||||
conv.chainback(output, 180U);
|
||||
|
||||
bool ret1 = CCRC::checkCCITT162(output1, 22U);
|
||||
if (ret1) {
|
||||
bool ret = CCRC::checkCCITT162(output, 22U);
|
||||
if (ret) {
|
||||
for (unsigned int i = 0U; i < 20U; i++)
|
||||
output1[i] ^= WHITENING_DATA[i];
|
||||
output[i] ^= WHITENING_DATA[i];
|
||||
|
||||
CUtils::dump("Data FR Mode, valid DCH1", output1, 20U);
|
||||
switch (fn) {
|
||||
case 0U:
|
||||
CUtils::dump("Data FR Mode, Destination", output + 0U, 10U);
|
||||
CUtils::dump("Data FR Mode, Source", output + 10U, 10U);
|
||||
if (m_dest == NULL)
|
||||
m_dest = new unsigned char[10U];
|
||||
if (m_source == NULL)
|
||||
m_source = new unsigned char[10U];
|
||||
::memcpy(m_dest, output, 10U);
|
||||
::memcpy(m_source, output, 10U);
|
||||
break;
|
||||
case 1U:
|
||||
CUtils::dump("Data FR Mode, Rem 1+2", output + 0U, 10U);
|
||||
CUtils::dump("Data FR Mode, Rem 3+4", output + 10U, 10U);
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
||||
for (unsigned int i = 0U; i < 20U; i++)
|
||||
output[i] ^= WHITENING_DATA[i];
|
||||
|
||||
CCRC::addCCITT162(output, 22U);
|
||||
output[22U] = 0x00U;
|
||||
|
||||
unsigned char convolved[45U];
|
||||
conv.encode(output, convolved, 180U);
|
||||
|
||||
unsigned char bytes[45U];
|
||||
unsigned int j = 0U;
|
||||
for (unsigned int i = 0U; i < 180U; i++) {
|
||||
unsigned int n = INTERLEAVE_TABLE_9_20[i];
|
||||
|
||||
bool s0 = READ_BIT1(convolved, j) != 0U;
|
||||
j++;
|
||||
|
||||
bool s1 = READ_BIT1(convolved, j) != 0U;
|
||||
j++;
|
||||
|
||||
WRITE_BIT1(bytes, n, s0);
|
||||
|
||||
n++;
|
||||
WRITE_BIT1(bytes, n, s1);
|
||||
}
|
||||
|
||||
p1 = m_data;
|
||||
p2 = bytes;
|
||||
for (unsigned int i = 0U; i < 5U; i++) {
|
||||
::memcpy(p1, p2, 9U);
|
||||
p1 += 18U; p2 += 9U;
|
||||
}
|
||||
}
|
||||
|
||||
p1 = m_data + 9U;
|
||||
p2 = dch;
|
||||
for (unsigned int i = 0U; i < 5U; i++) {
|
||||
::memcpy(p2, p1, 9U);
|
||||
p1 += 18U; p2 += 9U;
|
||||
}
|
||||
|
||||
conv.start();
|
||||
|
||||
// Deinterleave the FICH and send bits to the Viterbi decoder
|
||||
for (unsigned int i = 0U; i < 180U; i++) {
|
||||
unsigned int n = INTERLEAVE_TABLE_9_20[i];
|
||||
uint8_t s0 = READ_BIT1(dch2, n) ? 1U : 0U;
|
||||
uint8_t s0 = READ_BIT1(dch, n) ? 1U : 0U;
|
||||
|
||||
n++;
|
||||
uint8_t s1 = READ_BIT1(dch2, n) ? 1U : 0U;
|
||||
uint8_t s1 = READ_BIT1(dch, n) ? 1U : 0U;
|
||||
|
||||
conv.decode(s0, s1);
|
||||
}
|
||||
|
||||
unsigned char output2[23U];
|
||||
conv.chainback(output2, 176U);
|
||||
conv.chainback(output, 180U);
|
||||
|
||||
bool ret2 = CCRC::checkCCITT162(output2, 22U);
|
||||
if (ret2) {
|
||||
for (unsigned int i = 0U; i < 20U; i++)
|
||||
output2[i] ^= WHITENING_DATA[i];
|
||||
ret = CCRC::checkCCITT162(output, 22U);
|
||||
|
||||
CUtils::dump("Data FR Mode, valid DCH2", output2, 20U);
|
||||
if (fn == 0U) {
|
||||
::memset(output, ' ', 20U);
|
||||
|
||||
if (m_downlink != NULL)
|
||||
::memcpy(output + 0U, m_downlink, 10U);
|
||||
|
||||
if (m_uplink != NULL)
|
||||
::memcpy(output + 10U, m_uplink, 10U);
|
||||
|
||||
ret = true;
|
||||
}
|
||||
|
||||
return true;
|
||||
// Data isn't corrupt so regenerate it
|
||||
if (ret) {
|
||||
for (unsigned int i = 0U; i < 20U; i++)
|
||||
output[i] ^= WHITENING_DATA[i];
|
||||
|
||||
CCRC::addCCITT162(output, 22U);
|
||||
output[22U] = 0x00U;
|
||||
|
||||
unsigned char convolved[45U];
|
||||
conv.encode(output, convolved, 180U);
|
||||
|
||||
unsigned char bytes[45U];
|
||||
unsigned int j = 0U;
|
||||
for (unsigned int i = 0U; i < 180U; i++) {
|
||||
unsigned int n = INTERLEAVE_TABLE_9_20[i];
|
||||
|
||||
bool s0 = READ_BIT1(convolved, j) != 0U;
|
||||
j++;
|
||||
|
||||
bool s1 = READ_BIT1(convolved, j) != 0U;
|
||||
j++;
|
||||
|
||||
WRITE_BIT1(bytes, n, s0);
|
||||
|
||||
n++;
|
||||
WRITE_BIT1(bytes, n, s1);
|
||||
}
|
||||
|
||||
p1 = m_data + 9U;
|
||||
p2 = bytes;
|
||||
for (unsigned int i = 0U; i < 5U; i++) {
|
||||
::memcpy(p1, p2, 9U);
|
||||
p1 += 18U; p2 += 9U;
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
void CYSFPayload::setUplink(const std::string& callsign)
|
||||
|
|
|
@ -26,7 +26,7 @@ public:
|
|||
CYSFPayload();
|
||||
~CYSFPayload();
|
||||
|
||||
bool decode(const unsigned char* bytes, unsigned char fi, unsigned char fn, unsigned char ft, unsigned char dt);
|
||||
bool decode(const unsigned char* bytes, unsigned char fi, unsigned char fn, unsigned char dt);
|
||||
|
||||
void encode(unsigned char* bytes);
|
||||
|
||||
|
@ -44,9 +44,9 @@ private:
|
|||
unsigned char* m_dest;
|
||||
|
||||
bool decodeHeader();
|
||||
bool decodeVDMode1(unsigned char fn, unsigned char ft);
|
||||
bool decodeVDMode2(unsigned char fn, unsigned char ft);
|
||||
bool decodeDataFRMode(unsigned char fn, unsigned char ft);
|
||||
bool decodeVDMode1(unsigned char fn);
|
||||
bool decodeVDMode2(unsigned char fn);
|
||||
bool decodeDataFRMode(unsigned char fn);
|
||||
};
|
||||
|
||||
#endif
|
||||
|
|
Loading…
Reference in a new issue