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This commit is contained in:
Jonathan Naylor 2020-05-02 17:50:39 +01:00
parent 948fa8bfbf
commit f1b69c5302
1 changed files with 42 additions and 34 deletions
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76
NXDNGateway/GPSHandler.cpp
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@ -65,12 +65,13 @@ void CGPSHandler::processData(const unsigned char* data)
::memcpy(m_data + m_length, data + 1U, NXDN_DATA_LENGTH); ::memcpy(m_data + m_length, data + 1U, NXDN_DATA_LENGTH);
m_length += NXDN_DATA_LENGTH; m_length += NXDN_DATA_LENGTH;
// The packet frame number and block number are zero to indicate the last section of the
// data transmission.
if (data[0U] == 0x00U) { if (data[0U] == 0x00U) {
bool ret = processIcom(); bool ret = processIcom();
if (!ret) if (!ret)
ret = processKenwood(); processKenwood();
if (ret) reset();
reset();
} }
} }
@ -198,53 +199,60 @@ bool CGPSHandler::processKenwood()
CUtils::dump("Kenwood GPS Data", m_data, m_length); CUtils::dump("Kenwood GPS Data", m_data, m_length);
unsigned char UTCss = m_data[1U] & 0x3FU; unsigned char UTCss = m_data[3U] & 0x3FU;
unsigned char UTCmm = ((m_data[1U] & 0xC0U) >> 2) | (m_data[2U] & 0x0FU); unsigned char UTCmm = ((m_data[3U] & 0xC0U) >> 6) | ((m_data[4U] & 0x0FU) << 2);
unsigned char UTChh = ((m_data[3U] & 0x01U) << 4) | (m_data[2U] & 0xF0U) >> 4; unsigned char UTChh = ((m_data[5U] & 0x01U) << 4) | ((m_data[4U] & 0xF0U) >> 4);
LogMessage("UTC hh:%u mm:%u ss:%u", UTChh, UTCmm, UTCss);
unsigned char UTCday = 0x1FU; unsigned char UTCday = 0x1FU;
unsigned char UTCmonth = 0x0FU; unsigned char UTCmonth = 0x0FU;
unsigned char UTCyear = 0x7FU; unsigned char UTCyear = 0x7FU;
if (type == GPS_FULL) { if (type == GPS_FULL) {
UTCday = m_data[15U] & 0x1FU; UTCday = m_data[17U] & 0x1FU;
UTCmonth = ((m_data[15U] & 0xE0U) >> 3) | (m_data[16] & 0x01U); UTCmonth = ((m_data[17U] & 0xE0U) >> 5) | ((m_data[18U] & 0x01U) << 4);
UTCyear = (m_data[16U] & 0xFEU) >> 1; UTCyear = (m_data[18U] & 0xFEU) >> 1;
LogMessage("UTC dd:%u mm:%u yy:%u", UTCday, UTCmonth, UTCyear);
} }
unsigned char north = 'N'; unsigned char north = 'N';
unsigned int latAfter = 0x7FFFU; unsigned int latAfter = 0x7FFFU;
unsigned int latBefore = 0xFFFFU; unsigned int latBefore = 0xFFFFU;
unsigned char east = 'E'; unsigned char east = 'E';
unsigned int longAfter = 0x7FFFU; unsigned int lonAfter = 0x7FFFU;
unsigned int longBefore = 0xFFFFU; unsigned int lonBefore = 0xFFFFU;
if (type == GPS_VERY_SHORT) { if (type == GPS_VERY_SHORT) {
north = (m_data[5U] & 0x01U) == 0x00U ? 'N' : 'S';
latAfter = ((m_data[5U] & 0xFEU) >> 1) | (m_data[6U] << 7);
latBefore = (m_data[8U] << 8) | m_data[7U];
east = (m_data[9U] & 0x01U) == 0x00U ? 'E' : 'W';
longAfter = ((m_data[9U] & 0xFEU) >> 1) | (m_data[10U] << 7);
longBefore = (m_data[12U] << 8) | m_data[11U];
} else {
north = (m_data[7U] & 0x01U) == 0x00U ? 'N' : 'S'; north = (m_data[7U] & 0x01U) == 0x00U ? 'N' : 'S';
latAfter = ((m_data[7U] & 0xFEU) >> 1) | (m_data[8U] << 7); latAfter = ((m_data[7U] & 0xFEU) >> 1) | (m_data[8U] << 7);
latBefore = (m_data[10U] << 8) | m_data[9U]; latBefore = (m_data[10U] << 8) | m_data[9U];
east = (m_data[11U] & 0x01U) == 0x00U ? 'E' : 'W'; east = (m_data[11U] & 0x01U) == 0x00U ? 'E' : 'W';
longAfter = ((m_data[11U] & 0xFEU) >> 1) | (m_data[12U] << 7); lonAfter = ((m_data[11U] & 0xFEU) >> 1) | (m_data[12U] << 7);
longBefore = (m_data[14U] << 8) | m_data[13U]; lonBefore = (m_data[13U] << 8) | m_data[13U];
} else {
north = (m_data[9U] & 0x01U) == 0x00U ? 'N' : 'S';
latAfter = ((m_data[9U] & 0xFEU) >> 1) | (m_data[10U] << 7);
latBefore = (m_data[12U] << 8) | m_data[11U];
east = (m_data[13U] & 0x01U) == 0x00U ? 'E' : 'W';
lonAfter = ((m_data[13U] & 0xFEU) >> 1) | (m_data[14U] << 7);
lonBefore = (m_data[16U] << 8) | m_data[15U];
} }
if (latAfter == 0x7FFFU || latBefore == 0xFFFFU || longAfter == 0x7FFFU || longBefore == 0xFFFFU) LogMessage("Latitude: %u . %u %c", latBefore, latAfter, north);
LogMessage("Longitude: %u . %u %c", lonBefore, lonAfter, east);
if (latAfter == 0x7FFFU || latBefore == 0xFFFFU || lonAfter == 0x7FFFU || lonBefore == 0xFFFFU)
return true; return true;
unsigned int course = 0xFFFFU; unsigned int course = 0xFFFFU;
unsigned int speedBefore = 0x3FFU; unsigned int speedBefore = 0x3FFU;
unsigned int speedAfter = 0x0FU; unsigned int speedAfter = 0x0FU;
if (type == GPS_FULL) { if (type == GPS_FULL) {
course = (m_data[21U] << 4) | (m_data[22U] & 0x0FU); course = (m_data[23U] << 4) | (m_data[24U] & 0x0FU);
speedBefore = ((m_data[23U] & 0xF0U) << 2) | (m_data[24U] & 0x3FU); speedBefore = ((m_data[25U] & 0xF0U) << 2) | (m_data[26U] & 0x3FU);
speedAfter = m_data[23U] & 0x0FU; speedAfter = m_data[25U] & 0x0FU;
} }
std::string source = m_source; std::string source = m_source;
@ -255,11 +263,11 @@ bool CGPSHandler::processKenwood()
char output[300U]; char output[300U];
if (course != 0xFFFFU && speedBefore != 0x3FFU && speedAfter != 0x0FU) { if (course != 0xFFFFU && speedBefore != 0x3FFU && speedAfter != 0x0FU) {
::sprintf(output, "%s>APDPRS,NXDN*,qAR,%s:!%07u.%02lu%c/%08u.%02u%cr%03d/%03d via MMDVM", ::sprintf(output, "%s>APDPRS,NXDN*,qAR,%s:!%04u.%02u%c/%05u.%02u%cr%03d/%03d via MMDVM",
source.c_str(), m_callsign.c_str(), latBefore, latAfter, north, longBefore, longAfter, east, course / 10U, speedBefore); source.c_str(), m_callsign.c_str(), latBefore, latAfter / 100U, north, lonBefore, lonAfter / 100U, east, course / 10U, speedBefore);
} else { } else {
::sprintf(output, "%s>APDPRS,NXDN*,qAR,%s:!%07u.%02u%c/%08u.%02u%cr via MMDVM", ::sprintf(output, "%s>APDPRS,NXDN*,qAR,%s:!%04u.%02u%c/%05u.%02u%cr via MMDVM",
source.c_str(), m_callsign.c_str(), latBefore, latAfter, north, longBefore, longAfter, east); source.c_str(), m_callsign.c_str(), latBefore, latAfter / 100U, north, lonBefore, lonAfter / 100U, east);
} }
LogMessage("Kenwood APRS message = %s", output); LogMessage("Kenwood APRS message = %s", output);