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WIP big rewrite of message decoding / aircraft tracking.

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This commit is contained in:
Oliver Jowett 2016-08-27 14:34:14 +01:00
parent f152bf633e
commit 54ca2c7fb2
9 changed files with 1313 additions and 959 deletions
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15
mode_ac.c
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@ -89,18 +89,21 @@ void decodeModeAMessage(struct modesMessage *mm, int ModeA)
mm->addr = (ModeA & 0x0000FF7F) | MODES_NON_ICAO_ADDRESS;
// Set the Identity field to ModeA
mm->modeA = ModeA & 0x7777;
mm->bFlags |= MODES_ACFLAGS_SQUAWK_VALID;
mm->squawk = ModeA & 0x7777;
mm->squawk_valid = 1;
// Flag ident in flight status
mm->fs = ModeA & 0x0080;
mm->spi = (ModeA & 0x0080) ? 1 : 0;
mm->spi_valid = 1;
// Decode an altitude if this looks like a possible mode C
if (!mm->fs) {
if (!mm->spi) {
int modeC = ModeAToModeC(ModeA);
if (modeC >= -12) {
if (modeC != INVALID_ALTITUDE) {
mm->altitude = modeC * 100;
mm->bFlags |= MODES_ACFLAGS_ALTITUDE_VALID;
mm->altitude_unit = UNIT_FEET;
mm->altitude_source = ALTITUDE_BARO;
mm->altitude_valid = 1;
}
}