bool
NMEAParser::GSA(NMEAInputLine &line, NMEAInfo &info)
{
/*
* $--GSA,a,a,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x.x,x.x,x.x*hh
*
* Field Number:
* 1) Selection mode
* M=Manual, forced to operate in 2D or 3D
* A=Automatic, 3D/2D
* 2) Mode (1 = no fix, 2 = 2D fix, 3 = 3D fix)
* 3) ID of 1st satellite used for fix
* 4) ID of 2nd satellite used for fix
* ...
* 14) ID of 12th satellite used for fix
* 15) PDOP
* 16) HDOP
* 17) VDOP
* 18) checksum
*/
line.Skip();
if (line.Read(0) == 1)
info.location_available.Clear();
// satellites are in items 4-15 of GSA string (4-15 is 1-indexed)
for (unsigned i = 0; i < GPSState::MAXSATELLITES; i++)
info.gps.satellite_ids[i] = line.Read(0);
info.gps.satellite_ids_available.Update(info.clock);
return true;
}
bool
VegaDevice::PDVSC(NMEAInputLine &line, gcc_unused NMEAInfo &info)
{
char responsetype[10];
line.Read(responsetype, 10);
char name[80];
line.Read(name, 80);
if (StringIsEqual(name, "ERROR"))
// ignore error responses...
return true;
int value = line.Read(0);
if (StringIsEqual(name, "ToneDeadbandCruiseLow"))
value = std::max(value, -value);
if (StringIsEqual(name, "ToneDeadbandCirclingLow"))
value = std::max(value, -value);
settings.Lock();
settings.Set(name, value);
settings.Unlock();
return true;
}
// $PDVDS,nx,nz,flap,stallratio,netto
static bool
PDVDS(NMEAInputLine &line, NMEAInfo &info)
{
fixed AccelX = line.Read(fixed_zero);
fixed AccelZ = line.Read(fixed_zero);
fixed mag = SmallHypot(AccelX, AccelZ);
info.acceleration.ProvideGLoad(fixed(mag) / 100, true);
/*
double flap = line.Read(0.0);
*/
line.Skip();
info.stall_ratio = line.Read(fixed_zero);
info.stall_ratio_available.Update(info.clock);
fixed value;
if (line.ReadChecked(value))
info.ProvideNettoVario(value / 10);
//hasVega = true;
return true;
}
bool
VegaDevice::PDVSC(NMEAInputLine &line, gcc_unused NMEAInfo &info)
{
char responsetype[10];
line.Read(responsetype, 10);
char name[80];
line.Read(name, 80);
if (strcmp(name, "ERROR") == 0)
// ignore error responses...
return true;
int value = line.Read(0);
if (strcmp(name, "ToneDeadbandCruiseLow") == 0)
value = std::max(value, -value);
if (strcmp(name, "ToneDeadbandCirclingLow") == 0)
value = std::max(value, -value);
settings_mutex.Lock();
settings[name] = value;
settings_mutex.Unlock();
return true;
}
static bool
PDAAV(NMEAInputLine &line, gcc_unused NMEAInfo &info)
{
gcc_unused unsigned short beepfrequency = line.Read(0);
gcc_unused unsigned short soundfrequency = line.Read(0);
gcc_unused unsigned char soundtype = line.Read(0);
// Temporarily commented out - function as yet undefined
// audio_setconfig(beepfrequency, soundfrequency, soundtype);
return true;
}
void
ParsePFLAE(NMEAInputLine &line, FlarmError &error, double clock)
{
char type[2];
line.Read(type, ARRAY_SIZE(type));
if (!StringIsEqual(type, "A"))
return;
error.severity = (FlarmError::Severity)
line.Read((int)FlarmError::Severity::NO_ERROR);
error.code = (FlarmError::Code)line.ReadHex(0);
error.available.Update(clock);
}
static bool
ReadFilename(NMEAInputLine &line, RecordedFlightInfo &info)
{
line.Read(info.internal.lx.nano_filename,
sizeof(info.internal.lx.nano_filename));
return info.internal.lx.nano_filename[0] != 0;
}
// RMN: Volkslogger
// Source data:
// $PGCS,1,0EC0,FFF9,0C6E,02*61
// $PGCS,1,0EC0,FFFA,0C6E,03*18
static bool
vl_PGCS1(NMEAInputLine &line, NMEAInfo &info)
{
if (line.Read(1) != 1)
return false;
/* pressure sensor */
line.Skip();
// four characers, hex, barometric altitude
unsigned u_altitude;
if (line.ReadHexChecked(u_altitude)) {
int altitude(u_altitude);
if (altitude > 60000)
/* Assuming that altitude has wrapped around. 60 000 m occurs
at QNH ~2000 hPa */
altitude -= 65535;
info.ProvidePressureAltitude(fixed(altitude));
}
// ExtractParameter(String,ctemp,3);
// four characters, hex, constant. Value 1371 (dec)
// nSatellites = (int)(min(12,HexStrToDouble(ctemp, NULL)));
return false;
}
void
ParsePFLAU(NMEAInputLine &line, FlarmStatus &flarm, double clock)
{
flarm.available.Update(clock);
// PFLAU,<RX>,<TX>,<GPS>,<Power>,<AlarmLevel>,<RelativeBearing>,<AlarmType>,
// <RelativeVertical>,<RelativeDistance>(,<ID>)
flarm.rx = line.Read(0);
flarm.tx = line.Read(false);
flarm.gps = (FlarmStatus::GPSStatus)
line.Read((int)FlarmStatus::GPSStatus::NONE);
line.Skip();
flarm.alarm_level = (FlarmTraffic::AlarmType)
line.Read((int)FlarmTraffic::AlarmType::NONE);
}
void PFLAC(NMEAInputLine &line) {
char command[4];
line.Read(command, ARRAY_SIZE(command));
if (strcmp(command, "S") == 0)
PFLAC_S(line);
else if (strcmp(command, "R") == 0)
PFLAC_R(line);
}
/**
* Parse the $PLXV0 sentence (LXNav V7).
*/
static bool
PLXV0(NMEAInputLine &line, DeviceSettingsMap<std::string> &settings)
{
char name[64];
line.Read(name, ARRAY_SIZE(name));
if (StringIsEmpty(name))
return true;
char type[2];
line.Read(type, ARRAY_SIZE(type));
if (type[0] != 'W')
return true;
const auto value = line.Rest();
settings.Lock();
settings.Set(name, std::string(value.begin(), value.end()));
settings.Unlock();
return true;
}
void
ParsePFLAV(NMEAInputLine &line, FlarmVersion &version, fixed clock)
{
char type[2];
line.Read(type, ARRAY_SIZE(type));
if (strcmp(type, "A") != 0)
return;
line.Read(version.hardware_version.buffer(),
version.hardware_version.MAX_SIZE);
version.hardware_version.CleanASCII();
line.Read(version.software_version.buffer(),
version.software_version.MAX_SIZE);
version.software_version.CleanASCII();
line.Read(version.obstacle_version.buffer(),
version.obstacle_version.MAX_SIZE);
version.obstacle_version.CleanASCII();
version.available.Update(clock);
}
void
ParsePFLAV(NMEAInputLine &line, FlarmVersion &version, double clock)
{
char type[2];
line.Read(type, ARRAY_SIZE(type));
if (!StringIsEqual(type, "A"))
return;
line.Read(version.hardware_version.buffer(),
version.hardware_version.capacity());
version.hardware_version.CleanASCII();
line.Read(version.software_version.buffer(),
version.software_version.capacity());
version.software_version.CleanASCII();
line.Read(version.obstacle_version.buffer(),
version.obstacle_version.capacity());
version.obstacle_version.CleanASCII();
version.available.Update(clock);
}
bool
FlarmDevice::ParsePFLAC(NMEAInputLine &line)
{
char responsetype[10];
line.Read(responsetype, 10);
char name[80];
line.Read(name, 80);
if (strcmp(name, "ERROR") == 0)
// ignore error responses...
return true;
char value[256];
line.Read(value, ARRAY_SIZE(value));
settings.Lock();
settings.Set(name, value);
settings.Unlock();
return true;
}
/**
* Parse the $PLXVC sentence (LXNAV Nano).
*
* $PLXVC,<key>,<type>,<values>*<checksum><cr><lf>
*/
static void
PLXVC(NMEAInputLine &line, DeviceInfo &device,
DeviceInfo &secondary_device,
DeviceSettingsMap<std::string> &settings)
{
char key[64];
line.Read(key, ARRAY_SIZE(key));
char type[2];
line.Read(type, ARRAY_SIZE(type));
if (StringIsEqual(key, "SET") && type[0] == 'A') {
char name[64];
line.Read(name, ARRAY_SIZE(name));
const auto value = line.Rest();
if (!StringIsEmpty(name)) {
settings.Lock();
settings.Set(name, std::string(value.begin(), value.end()));
settings.Unlock();
}
} else if (StringIsEqual(key, "INFO") && type[0] == 'A') {
ParseNanoInfo(line, device);
} else if (StringIsEqual(key, "GPSINFO") && type[0] == 'A') {
/* the LXNAV V7 (firmware >= 2.01) forwards the Nano's INFO
sentence with the "GPS" prefix */
char name[64];
line.Read(name, ARRAY_SIZE(name));
if (StringIsEqual(name, "LXWP1")) {
LXWP1(line, secondary_device);
} else if (StringIsEqual(name, "INFO")) {
line.Read(type, ARRAY_SIZE(type));
if (type[0] == 'A')
ParseNanoInfo(line, secondary_device);
}
}
}
void PFLAC_R(NMEAInputLine &line) {
char name[64];
line.Read(name, ARRAY_SIZE(name));
auto i = settings.find(name);
if (i == settings.end())
return;
const char *value = i->second.c_str();
char buffer[512];
snprintf(buffer, ARRAY_SIZE(buffer), "PFLAC,A,%s,%s", name, value);
PortWriteNMEA(*port, buffer, *env);
}
void
ParsePFLAE(NMEAInputLine &line, FlarmError &error, fixed clock)
{
char type[2];
line.Read(type, ARRAY_SIZE(type));
if (strcmp(type, "A") != 0)
return;
error.severity = (FlarmError::Severity)
line.ReadHex((long)FlarmError::Severity::NO_ERROR);
error.code = (FlarmError::Code)line.ReadHex(0);
error.available.Update(clock);
}
// $PDVDS,nx,nz,flap,stallratio,netto
static bool
PDVDS(NMEAInputLine &line, NMEAInfo &info)
{
const int accel_x = line.Read(0), accel_z = line.Read(0);
fixed mag = SmallHypot(fixed(accel_x), fixed(accel_z));
info.acceleration.ProvideGLoad(mag / 100, true);
/*
double flap = line.Read(0.0);
*/
line.Skip();
info.stall_ratio = line.Read(fixed(0));
info.stall_ratio_available.Update(info.clock);
int value;
if (line.ReadChecked(value))
info.ProvideNettoVario(fixed(value) / 10);
//hasVega = true;
return true;
}
void PFLAC_S(NMEAInputLine &line) {
char name[64];
line.Read(name, ARRAY_SIZE(name));
const auto value = line.Rest();
NarrowString<256> value_buffer;
value_buffer.SetASCII(value.begin(), value.end());
settings[name] = value_buffer;
char buffer[512];
snprintf(buffer, ARRAY_SIZE(buffer), "PFLAC,A,%s,%s", name,
value_buffer.c_str());
PortWriteNMEA(*port, buffer, *env);
}
static bool
PZAN5(NMEAInputLine &line, NMEAInfo &info)
{
// $PZAN5,VA,MUEHL,123.4,KM,T,234*cc
char state[3];
line.Read(state, 3);
if (StringIsEqual(state, "SF"))
info.switch_state.flight_mode = SwitchState::FlightMode::CRUISE;
else if (StringIsEqual(state, "VA"))
info.switch_state.flight_mode = SwitchState::FlightMode::CIRCLING;
else
info.switch_state.flight_mode = SwitchState::FlightMode::UNKNOWN;
return true;
}
static bool
cLXWP0(NMEAInputLine &line, NMEAInfo &info)
{
/*
$LXWP0,Y,222.3,1665.5,1.71,,,,,,239,174,10.1
0 logger_stored (Y/N)
1 IAS (kph) ----> Condor uses TAS!
2 baroaltitude (m)
3 vario (m/s)
4-8 unknown
9 heading of plane
10 windcourse (deg)
11 windspeed (kph)
*/
fixed value;
line.Skip();
fixed airspeed;
bool tas_available = line.ReadChecked(airspeed);
fixed alt = line.Read(fixed_zero);
if (tas_available)
info.ProvideTrueAirspeedWithAltitude(Units::ToSysUnit(airspeed,
Unit::KILOMETER_PER_HOUR),
alt);
// ToDo check if QNH correction is needed!
info.ProvideBaroAltitudeTrue(alt);
if (line.ReadChecked(value))
info.ProvideTotalEnergyVario(value);
line.Skip(6);
SpeedVector wind;
if (ReadSpeedVector(line, wind))
info.ProvideExternalWind(wind);
return true;
}
bool
NMEAParser::GLL(NMEAInputLine &line, NMEAInfo &info)
{
/*
* $--GLL,llll.ll,a,yyyyy.yy,a,hhmmss.ss,a,m,*hh
*
* Field Number:
* 1) Latitude
* 2) N or S (North or South)
* 3) Longitude
* 4) E or W (East or West)
* 5) Universal Time Coordinated (UTC)
* 6) Status A - Data Valid, V - Data Invalid
* 7) FAA mode indicator (NMEA 2.3 and later)
* 8) Checksum
*/
GeoPoint location;
bool valid_location = ReadGeoPoint(line, location);
fixed this_time = TimeModify(line.Read(fixed_zero), info.date_time_utc,
info.date_available);
this_time = TimeAdvanceTolerance(this_time);
bool gps_valid = !NAVWarn(line.ReadFirstChar());
if (!TimeHasAdvanced(this_time, info))
return true;
if (!gps_valid)
info.location_available.Clear();
else if (valid_location)
info.location_available.Update(info.clock);
if (valid_location)
info.location = location;
info.gps.real = real;
#ifdef ANDROID
info.gps.android_internal_gps = false;
#endif
return true;
}
static bool
PDVDV(NMEAInputLine &line, NMEAInfo &info)
{
fixed value;
if (line.ReadChecked(value))
info.ProvideTotalEnergyVario(value / 10);
bool ias_available = line.ReadChecked(value);
fixed tas_ratio = line.Read(fixed(1024)) / 1024;
if (ias_available)
info.ProvideBothAirspeeds(value / 10, value / 10 * tas_ratio);
//hasVega = true;
if (line.ReadChecked(value))
info.ProvidePressureAltitude(value);
return true;
}
static bool
PZAN5(NMEAInputLine &line, NMEAInfo &info)
{
// $PZAN5,VA,MUEHL,123.4,KM,T,234*cc
char state[3];
line.Read(state, 3);
if (strcmp(state, "SF") == 0) {
info.switch_state.flight_mode = SwitchInfo::FlightMode::CRUISE;
info.switch_state.speed_command = true;
} else if (strcmp(state, "VA") == 0) {
info.switch_state.flight_mode = SwitchInfo::FlightMode::CIRCLING;
info.switch_state.speed_command = false;
} else
return false;
info.switch_state_available = true;
return true;
}
static bool
PDVDV(NMEAInputLine &line, NMEAInfo &info)
{
int value;
if (line.ReadChecked(value))
info.ProvideTotalEnergyVario(fixed(value) / 10);
bool ias_available = line.ReadChecked(value);
int tas_ratio = line.Read(1024);
if (ias_available) {
const fixed ias = fixed(value) / 10;
info.ProvideBothAirspeeds(ias, ias * tas_ratio / 1024);
}
//hasVega = true;
if (line.ReadChecked(value))
info.ProvidePressureAltitude(fixed(value));
return true;
}
static bool
ParsePITV5(NMEAInputLine &line, NMEAInfo &info)
{
fixed value;
fixed norm, bearing;
// wind speed [m/s]
bool norm_valid = line.ReadChecked(norm);
// wind dir [degrees]
bool bearing_valid = line.ReadChecked(bearing);
if (norm_valid && bearing_valid) {
SpeedVector wind(Angle::Degrees(bearing), norm);
info.ProvideExternalWind(wind);
}
if (line.ReadChecked(value)) {
// sqrt density ratio
}
if (line.ReadChecked(value)) {
// turbulence
}
// climb/cruise switch
switch (line.Read(-1)) {
case 1:
info.switch_state.flight_mode = SwitchState::FlightMode::CRUISE;
break;
case 0:
info.switch_state.flight_mode = SwitchState::FlightMode::CIRCLING;
break;
}
// mc value [m/s]
if (line.ReadChecked(value)) {
info.settings.ProvideMacCready(value, info.clock);
}
return true;
}
bool
NMEAParser::ReadDate(NMEAInputLine &line, BrokenDate &date)
{
char buffer[9];
line.Read(buffer, 9);
if (strlen(buffer) != 6)
return false;
BrokenDate new_value;
new_value.year = atoi(buffer + 4) + 2000;
buffer[4] = '\0';
new_value.month = atoi(buffer + 2);
buffer[2] = '\0';
new_value.day = atoi(buffer);
if (!new_value.Plausible())
return false;
date = new_value;
return true;
}
/**
* Parses an angle in the form "DDDMM.SSS". Minutes are 0..59, and
* seconds are 0..999.
*/
static bool
ReadGeoAngle(NMEAInputLine &line, Angle &a)
{
char buffer[32], *endptr;
line.Read(buffer, sizeof(buffer));
char *dot = strchr(buffer, '.');
if (dot < buffer + 3)
return false;
double x = strtod(dot - 2, &endptr);
if (x < 0 || x >= 60 || *endptr != 0)
return false;
dot[-2] = 0;
long y = strtol(buffer, &endptr, 10);
if (y < 0 || y > 180 || endptr == buffer || *endptr != 0)
return false;
a = Angle::Degrees(fixed(y) + fixed(x) / 60);
return true;
}
static bool
ReadTime(NMEAInputLine &line, BrokenTime &time)
{
char buffer[10];
line.Read(buffer, sizeof(buffer));
char *p = buffer, *endptr;
time.hour = strtoul(p, &endptr, 10);
if (endptr == p || *endptr != ':')
return false;
p = endptr + 1;
time.minute = strtoul(p, &endptr, 10);
if (endptr == p || *endptr != ':')
return false;
p = endptr + 1;
time.second = strtoul(p, &endptr, 10);
if (endptr == p || *endptr != 0)
return false;
return time.IsPlausible();
}
static bool
ReadDate(NMEAInputLine &line, BrokenDate &date)
{
char buffer[16];
line.Read(buffer, sizeof(buffer));
char *p = buffer, *endptr;
date.day = strtoul(p, &endptr, 10);
if (endptr == p || *endptr != '.')
return false;
p = endptr + 1;
date.month = strtoul(p, &endptr, 10);
if (endptr == p || *endptr != '.')
return false;
p = endptr + 1;
date.year = strtoul(p, &endptr, 10);
if (endptr == p || *endptr != 0)
return false;
return date.IsPlausible();
}