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--mlat option and --interactive-rtl1090 option added

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--mlat option introduced: to display raw data in Beast ascii format with
counter (@...;), does not affect Beast binary format ;
--interactive-rtl1090 option introduced: order of flight table Iin
interactive mode) and some formats adopted to RTL1090 format, so
comparison is easier
This commit is contained in:
junglejet 2013-04-12 12:15:52 +02:00
parent ff697dbb51
commit c4956704e7
1 changed files with 102 additions and 51 deletions
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131
dump1090.c
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@ -184,22 +184,23 @@ struct {
int onlyaddr; /* Print only ICAO addresses. */
int metric; /* Use metric units. */
int aggressive; /* Aggressive detection algorithm. */
int mlat; /* Use mlat format for raw data output, i.e. @...; iso *...; */ //&&&
/* Interactive mode */
struct aircraft *aircrafts;
uint64_t interactive_last_update; /* Last screen update in milliseconds */
/* Statistics */
int64_t stat_valid_preamble;
int64_t stat_demodulated;
int64_t stat_goodcrc;
int64_t stat_badcrc;
int64_t stat_fixed;
int64_t stat_single_bit_fix;
int64_t stat_two_bits_fix;
int64_t stat_http_requests;
int64_t stat_sbs_connections;
int64_t stat_out_of_phase;
uint64_t stat_valid_preamble;
uint64_t stat_demodulated;
uint64_t stat_goodcrc;
uint64_t stat_badcrc;
uint64_t stat_fixed;
uint64_t stat_single_bit_fix;
uint64_t stat_two_bits_fix;
uint64_t stat_http_requests;
uint64_t stat_sbs_connections;
uint64_t stat_out_of_phase;
} Modes;
/* The struct we use to store information about a decoded message. */
@ -218,7 +219,6 @@ struct modesMessage {
/* DF 11 */
int ca; /* Responder capabilities. */
int iid;
/* DF 17 */
int metype; /* Extended squitter message type. */
@ -298,6 +298,7 @@ void modesInitConfig(void) {
Modes.interactive_ttl = MODES_INTERACTIVE_TTL;
Modes.quiet = 0;
Modes.aggressive = 0;
Modes.mlat = 0; //&&&
}
void modesInit(void) {
@ -699,20 +700,18 @@ uint32_t modes_checksum_table[112] = {
uint32_t modesChecksum(unsigned char *msg, int bits) {
uint32_t crc = 0;
int offset = (bits == 112) ? 0 : (112-56);
uint8_t theByte = *msg;
uint32_t * pCRCTable = &modes_checksum_table[offset];
int j;
for(j = 0; j < bits; j++) {
if ((j & 7) == 0)
{theByte = *msg++;}
int byte = j/8;
int bit = j%8;
int bitmask = 1 << (7-bit);
// If bit is set, xor with corresponding table entry.
if (theByte & 0x80) {crc ^= *pCRCTable;}
pCRCTable++;
theByte = theByte << 1;
/* If bit is set, xor with corresponding table entry. */
if (msg[byte] & bitmask)
crc ^= modes_checksum_table[j+offset];
}
return crc; // 24 bit checksum.
return crc; /* 24 bit checksum. */
}
/* Given the Downlink Format (DF) of the message, return the message length
@ -994,27 +993,23 @@ void decodeModesMessage(struct modesMessage *mm, unsigned char *msg) {
char *ais_charset = "?ABCDEFGHIJKLMNOPQRSTUVWXYZ????? ???????????????0123456789??????";
/* Work on our local copy */
memcpy(mm->msg, msg, MODES_LONG_MSG_BYTES);
memcpy(mm->msg,msg,MODES_LONG_MSG_BYTES);
msg = mm->msg;
/* Get the message type ASAP as other operations depend on this */
mm->msgtype = msg[0] >> 3; /* Downlink Format */
mm->msgtype = msg[0]>>3; /* Downlink Format */
mm->msgbits = modesMessageLenByType(mm->msgtype);
/* CRC is always the last three bytes. */
mm->crc = ((uint32_t)msg[(mm->msgbits/8)-3] << 16) |
((uint32_t)msg[(mm->msgbits/8)-2] << 8) |
(uint32_t)msg[(mm->msgbits/8)-1];
crc2 = modesChecksum(msg, mm->msgbits);
mm->iid = (mm->crc ^ crc2);
crc2 = modesChecksum(msg,mm->msgbits);
/* Check CRC and fix single bit errors using the CRC when
* possible (DF 11 and 17). */
mm->errorbit = -1; /* No error */
if (mm->msgtype == 11)
{mm->crcok = (mm->iid < 80);}
else
{mm->crcok = (mm->iid == 0);}
mm->crcok = (mm->crc == crc2);
if (!mm->crcok && Modes.fix_errors &&
(mm->msgtype == 11 || mm->msgtype == 17))
@ -1180,6 +1175,7 @@ void decodeModesMessage(struct modesMessage *mm, unsigned char *msg) {
* in a human readable format. */
void displayModesMessage(struct modesMessage *mm) {
int j;
char * pTimeStamp; //&&&
/* Handle only addresses mode first. */
if (Modes.onlyaddr) {
@ -1188,10 +1184,19 @@ void displayModesMessage(struct modesMessage *mm) {
}
/* Show the raw message. */
if (Modes.mlat){ //&&&
printf("@"); //&&&
pTimeStamp = (char *) &mm->timestampMsg;
for (j=5; j>=0;j--) {
printf("%02X",pTimeStamp[j]);
}
} else
printf("*");
for (j = 0; j < mm->msgbits/8; j++) printf("%02x", mm->msg[j]);
printf(";\n");
if (Modes.raw) {
fflush(stdout); /* Provide data to the reader ASAP. */
return; /* Enough for --raw mode */
@ -1568,7 +1573,6 @@ void detectModeS(uint16_t *m, uint32_t mlen) {
/* Pass data to the next layer */
useModesMessage(&mm);
} else {
if (Modes.debug & MODES_DEBUG_DEMODERR && use_correction) {
printf("The following message has %d demod errors\n", errors);
@ -1576,9 +1580,10 @@ void detectModeS(uint16_t *m, uint32_t mlen) {
}
}
// Retry with phase correction if possible.
/* Retry with phase correction if possible. */
if (!good_message && !use_correction && j && detectOutOfPhase(pPreamble)) {
use_correction = 1; j--;
j--;
use_correction = 1;
} else {
use_correction = 0;
}
@ -1864,13 +1869,16 @@ void interactiveShowData(void) {
printf("\x1b[H\x1b[2J"); /* Clear the screen */
printf(
"Hex ModeA Flight Alt Speed Lat Lon Track Msgs Seen %c\n"
//&&&
//"Hex ModeA Flight Alt Speed Lat Lon Track Msgs Seen %c\n"
///123456 EZS789VA F222>290 +23 356 191 1373
"Hex Flight Alt V/S GS TT SSR G*456^ Msgs Seen %c\n"
"--------------------------------------------------------------------------------\n",
progress);
while(a && count < Modes.interactive_rows) {
int altitude = a->altitude, speed = a->speed, msgs = a->messages;
char squawk[5] = "0";
char squawk[5] = " ";
char spacer = '\0';
/* Convert units to metric if --metric was specified. */
@ -1885,6 +1893,9 @@ void interactiveShowData(void) {
altitude = -9999;
}
altitude=altitude/100; //&&&
if (altitude<0) altitude=0;
if (a->squawk > 0 && a->squawk <= 7777) {
sprintf(squawk, "%04d", a->squawk);
}
@ -1897,9 +1908,13 @@ void interactiveShowData(void) {
spacer = ' ';
}
printf("%-6s %-4s %-8s %-7d %-7d %-7.03f %-7.03f %-3d %-6d %d%c sec\n",
a->hexaddr, squawk, a->flight, altitude, speed,
a->lat, a->lon, a->track, msgs, (int)(now - a->seen), spacer);
printf("%-6s %-8s F%3d %3d %3d %4s %6d %d %c \n", //&&&
a->hexaddr, a->flight, altitude, speed,
a->track, squawk, msgs, (int)(now - a->seen), spacer);
// printf("%-6s %-4s %-8s %-7d %-7d %-7.03f %-7.03f %-3d %-6d %d%c sec\n",
// a->hexaddr, squawk, a->flight, altitude, speed,
// a->lat, a->lon, a->track, msgs, (int)(now - a->seen), spacer);
a = a->next;
count++;
}
@ -2101,18 +2116,28 @@ void modesSendBeastOutput(struct modesMessage *mm) {
void modesSendRawOutput(struct modesMessage *mm) {
char msg[128], *p = msg;
int j;
char * pTimeStamp;
if (Modes.mlat) { //&&&
*p++ = '@';
pTimeStamp = (char *) &mm->timestampMsg;
for (j = 5; j >= 0; j--) {
sprintf(p, "%02X", pTimeStamp[j]);
p += 2;
}
} else
*p++ = '*';
for (j = 0; j < mm->msgbits/8; j++) {
sprintf(p, "%02X", mm->msg[j]);
p += 2;
}
*p++ = ';';
*p++ = '\n';
modesSendAllClients(Modes.ros, msg, p-msg);
}
/* Write SBS output to TCP clients. */
void modesSendSBSOutput(struct modesMessage *mm, struct aircraft *a) {
char msg[256], *p = msg;
@ -2477,6 +2502,7 @@ void showHelp(void) {
"--no-fix Disable single-bits error correction using CRC.\n"
"--no-crc-check Disable messages with broken CRC (discouraged).\n"
"--aggressive More CPU for more messages (two bits fixes, ...).\n"
"--mlat display raw messages in Beast ascii mode.\n" //&&&
"--stats With --ifile print stats at exit. No other output.\n"
"--onlyaddr Show only ICAO addresses (testing purposes).\n"
"--metric Use metric units (meters, km/h, ...).\n"
@ -2600,6 +2626,8 @@ int main(int argc, char **argv) {
Modes.ppm_error = atoi(argv[++j]);
} else if (!strcmp(argv[j],"--quiet")) {
Modes.quiet = 1;
} else if (!strcmp(argv[j],"--mlat")) {
Modes.mlat = 1; //&&&
} else {
fprintf(stderr,
"Unknown or not enough arguments for option '%s'.\n\n",
@ -2660,17 +2688,40 @@ int main(int argc, char **argv) {
if (Modes.exit) break;
}
/* If --ifile and --stats were given, print statistics. */ }
computeMagnitudeVector();
/* Signal to the other thread that we processed the available data
* and we want more (useful for --ifile). */
Modes.data_ready = 0;
pthread_cond_signal(&Modes.data_cond);
/* Process data after releasing the lock, so that the capturing
* thread can read data while we perform computationally expensive
* stuff * at the same time. (This should only be useful with very
* slow processors). */
pthread_mutex_unlock(&Modes.data_mutex);
detectModeS(Modes.magnitude, MODES_ASYNC_BUF_SAMPLES);
Modes.timestampBlk += (MODES_ASYNC_BUF_SAMPLES*6);
backgroundTasks();
pthread_mutex_lock(&Modes.data_mutex);
if (Modes.exit) break;
}
/* If --ifile and --stats were given, print statistics. */
if (Modes.stats && Modes.filename) {
printf("%lld valid preambles\n", Modes.stat_valid_preamble);
printf("%lld demodulated again after phase correction\n", Modes.stat_out_of_phase);
printf("%lld demodulated with zero errors\n", Modes.stat_demodulated);
printf("%lld demodulated again after phase correction\n",
Modes.stat_out_of_phase);
printf("%lld demodulated with zero errors\n",
Modes.stat_demodulated);
printf("%lld with good crc\n", Modes.stat_goodcrc);
printf("%lld with bad crc\n", Modes.stat_badcrc);
printf("%lld errors corrected\n", Modes.stat_fixed);
printf("%lld single bit errors\n", Modes.stat_single_bit_fix);
printf("%lld two bits errors\n", Modes.stat_two_bits_fix);
printf("%lld total usable messages\n", Modes.stat_goodcrc + Modes.stat_fixed);
printf("%lld total usable messages\n",
Modes.stat_goodcrc + Modes.stat_fixed);
}
rtlsdr_close(Modes.dev);