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Decode/emit emergency/priority status

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This commit is contained in:
Oliver Jowett 2018-01-09 14:43:58 +00:00
parent 079061df3c
commit ea1e9c336b
5 changed files with 60 additions and 2 deletions
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14
dump1090.h
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@ -215,6 +215,18 @@ typedef enum {
NAV_MODE_TCAS = 32
} nav_modes_t;
// Matches encoding of the ES type 28/1 emergency/priority status subfield
typedef enum {
EMERGENCY_NONE = 0,
EMERGENCY_GENERAL = 1,
EMERGENCY_LIFEGUARD = 2,
EMERGENCY_MINFUEL = 3,
EMERGENCY_NORDO = 4,
EMERGENCY_UNLAWFUL = 5,
EMERGENCY_DOWNED = 6,
EMERGENCY_RESERVED = 7
} emergency_t;
#define MODES_NON_ICAO_ADDRESS (1<<24) // Set on addresses to indicate they are not ICAO addresses
#define MODES_DEBUG_DEMOD (1<<0)
@ -450,6 +462,7 @@ struct modesMessage {
unsigned spi : 1;
unsigned alert_valid : 1;
unsigned alert : 1;
unsigned emergency_valid : 1;
unsigned metype; // DF17/18 ME type
unsigned mesub; // DF17/18 ME subtype
@ -486,6 +499,7 @@ struct modesMessage {
unsigned squawk; // 13 bits identity (Squawk), encoded as 4 hex digits
char callsign[9]; // 8 chars flight number, NUL-terminated
unsigned category; // A0 - D7 encoded as a single hex byte
emergency_t emergency; // emergency/priority status
// valid if cpr_valid
cpr_type_t cpr_type; // The encoding type used (surface, airborne, coarse TIS-B)