kopia lustrzana https://github.com/projecthorus/radiosonde_auto_rx
meisei: BCH test
Zilog80
rodzic
39c1eb0fff
commit
a909215e9f
|
|
@ -0,0 +1,684 @@
|
|||
|
||||
/*
|
||||
* big endian forest
|
||||
*
|
||||
* Meisei radiosondes
|
||||
* author: zilog80
|
||||
*
|
||||
*/
|
||||
|
||||
/*
|
||||
PCM-FM, 1200 baud biphase-S
|
||||
1200 bit pro Sekunde: zwei Frames, die wiederum in zwei Subframes unterteilt werden koennen, d.h. 4 mal 300 bit.
|
||||
|
||||
Variante 1 (RS-11G ?)
|
||||
<option -1>
|
||||
049DCE1C667FDD8F537C8100004F20764630A20000000010040436 FB623080801F395FFE08A76540000FE01D0C2C1E75025006DE0A07
|
||||
049DCE1C67008C73D7168200004F0F764B31A2FFFF000010270B14 FB6230000000000000000000000000000000000000000000001D59
|
||||
|
||||
0x00..0x02 HEADER 0x049DCE
|
||||
0x03..0x04 16 bit 0.5s-counter, count%2=0:
|
||||
0x1B..0x1D HEADER 0xFB6230
|
||||
0x20..0x23 32 bit GPS-lat * 1e7 (DD.dddddd)
|
||||
0x24..0x27 32 bit GPS-lon * 1e7 (DD.dddddd)
|
||||
0x28..0x2B 32 bit GPS-alt * 1e2 (m)
|
||||
0x32..0x35 32 bit date jjJJMMTT
|
||||
|
||||
0x00..0x02 HEADER 0x049DCE
|
||||
0x03..0x04 16 bit 0.5s-counter, count%2=1:
|
||||
0x17..0x18 16 bit time ms xxyy, 00.000-59.000
|
||||
0x19..0x1A 16 bit time hh:mm
|
||||
0x1B..0x1D HEADER 0xFB6230
|
||||
|
||||
|
||||
0x049DCE ^ 0xFB6230 = 0xFFFFFE
|
||||
|
||||
|
||||
Variante 2 (iMS-100 ?)
|
||||
<option -2>
|
||||
049DCE3E228023DBF53FA700003C74628430C100000000ABE00B3B FB62302390031EECCC00E656E42327562B2436C4C01CDB0F18B09A
|
||||
049DCE3E23516AF62B3FC700003C7390D131C100000000AB090000 FB62300000000000032423222422202014211B13220000000067C4
|
||||
|
||||
0x00..0x02 HEADER 0x049DCE
|
||||
0x03..0x04 16 bit 0.5s-counter, count%2=0:
|
||||
0x17..0x18 16 bit time ms yyxx, 00.000-59.000
|
||||
0x19..0x1A 16 bit time hh:mm
|
||||
0x1B..0x1D HEADER 0xFB6230
|
||||
0x1E..0x1F 16 bit ? date (TT,MM,JJ)=(date/1000,(date/10)%100,(date%10)+10)
|
||||
0x20..0x23 32 bit GPS-lat * 1e4 (NMEA DDMM.mmmm)
|
||||
0x24..0x27 32 bit GPS-lon * 1e4 (NMEA DDMM.mmmm)
|
||||
0x28..0x2A 24 bit GPS-alt * 1e2 (m)
|
||||
|
||||
0x00..0x02 HEADER 0x049DCE
|
||||
0x03..0x04 16 bit 0.5s-counter, count%2=1:
|
||||
0x17..0x18 16 bit 1024-counter yyxx, +0x400=1024; rollover synchron zu ms-counter, nach rollover auch +0x300=768
|
||||
0x1B..0x1D HEADER 0xFB6230
|
||||
|
||||
|
||||
Die 46bit-Bloecke sind BCH-Codewoerter. Es handelt sich um einen (63,51)-Code mit Generatorpolynom
|
||||
x^12+x^10+x^8+x^5+x^4+x^3+1;
|
||||
gekuerzt auf (46,34), die letzten 12 bit sind die BCH-Kontrollbits.
|
||||
|
||||
Die 34 Nachrichtenbits sind aufgeteilt in 16+1+16+1, d.h. nach einem 16 bit Block kommt ein Paritaetsbit,
|
||||
dass 1 ist, wenn die Anzahl 1en in den 16 bit davor gerade ist, und sonst 0.
|
||||
*/
|
||||
|
||||
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
// #include <math.h>
|
||||
#ifdef CYGWIN
|
||||
#include <fcntl.h> // cygwin: _setmode()
|
||||
#include <io.h>
|
||||
#endif
|
||||
|
||||
typedef unsigned char ui8_t;
|
||||
typedef unsigned short ui16_t;
|
||||
typedef unsigned int ui32_t;
|
||||
|
||||
typedef struct {
|
||||
int jahr; int monat; int tag;
|
||||
int std; int min; int sek;
|
||||
double lat; double lon; double alt;
|
||||
} datum_t;
|
||||
|
||||
datum_t datum;
|
||||
|
||||
|
||||
int option_verbose = 0, // ausfuehrliche Anzeige
|
||||
option_raw = 0, // rohe Frames
|
||||
option_inv = 0, // invertiert Signal
|
||||
option_res = 0, // genauere Bitmessung
|
||||
option1 = 0,
|
||||
option2 = 0,
|
||||
option_ecc = 0, // BCH(63,51)
|
||||
wavloaded = 0;
|
||||
|
||||
/* -------------------------------------------------------------------------- */
|
||||
// Fehlerkorrektur (noch?) nicht sehr effektiv... (t zu klein)
|
||||
|
||||
#include "bch_ecc.c"
|
||||
|
||||
int errors;
|
||||
ui8_t cw[63+1], // BCH(63,51), t=2
|
||||
err_pos[4],
|
||||
err_val[4];
|
||||
ui8_t block_err[6];
|
||||
int block, check_err;
|
||||
|
||||
/* -------------------------------------------------------------------------- */
|
||||
|
||||
#define BAUD_RATE 2400
|
||||
|
||||
int sample_rate = 0, bits_sample = 0, channels = 0;
|
||||
float samples_per_bit = 0;
|
||||
|
||||
int findstr(char *buff, char *str, int pos) {
|
||||
int i;
|
||||
for (i = 0; i < 4; i++) {
|
||||
if (buff[(pos+i)%4] != str[i]) break;
|
||||
}
|
||||
return i;
|
||||
}
|
||||
|
||||
int read_wav_header(FILE *fp) {
|
||||
char txt[4+1] = "\0\0\0\0";
|
||||
unsigned char dat[4];
|
||||
int byte, p=0;
|
||||
|
||||
if (fread(txt, 1, 4, fp) < 4) return -1;
|
||||
if (strncmp(txt, "RIFF", 4)) return -1;
|
||||
if (fread(txt, 1, 4, fp) < 4) return -1;
|
||||
// pos_WAVE = 8L
|
||||
if (fread(txt, 1, 4, fp) < 4) return -1;
|
||||
if (strncmp(txt, "WAVE", 4)) return -1;
|
||||
// pos_fmt = 12L
|
||||
for ( ; ; ) {
|
||||
if ( (byte=fgetc(fp)) == EOF ) return -1;
|
||||
txt[p % 4] = byte;
|
||||
p++; if (p==4) p=0;
|
||||
if (findstr(txt, "fmt ", p) == 4) break;
|
||||
}
|
||||
if (fread(dat, 1, 4, fp) < 4) return -1;
|
||||
if (fread(dat, 1, 2, fp) < 2) return -1;
|
||||
|
||||
if (fread(dat, 1, 2, fp) < 2) return -1;
|
||||
channels = dat[0] + (dat[1] << 8);
|
||||
|
||||
if (fread(dat, 1, 4, fp) < 4) return -1;
|
||||
memcpy(&sample_rate, dat, 4); //sample_rate = dat[0]|(dat[1]<<8)|(dat[2]<<16)|(dat[3]<<24);
|
||||
|
||||
if (fread(dat, 1, 4, fp) < 4) return -1;
|
||||
if (fread(dat, 1, 2, fp) < 2) return -1;
|
||||
//byte = dat[0] + (dat[1] << 8);
|
||||
|
||||
if (fread(dat, 1, 2, fp) < 2) return -1;
|
||||
bits_sample = dat[0] + (dat[1] << 8);
|
||||
|
||||
// pos_dat = 36L + info
|
||||
for ( ; ; ) {
|
||||
if ( (byte=fgetc(fp)) == EOF ) return -1;
|
||||
txt[p % 4] = byte;
|
||||
p++; if (p==4) p=0;
|
||||
if (findstr(txt, "data", p) == 4) break;
|
||||
}
|
||||
if (fread(dat, 1, 4, fp) < 4) return -1;
|
||||
|
||||
|
||||
fprintf(stderr, "sample_rate: %d\n", sample_rate);
|
||||
fprintf(stderr, "bits : %d\n", bits_sample);
|
||||
fprintf(stderr, "channels : %d\n", channels);
|
||||
|
||||
if ((bits_sample != 8) && (bits_sample != 16)) return -1;
|
||||
|
||||
samples_per_bit = sample_rate/(float)BAUD_RATE;
|
||||
|
||||
fprintf(stderr, "samples/bit: %.2f\n", samples_per_bit);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
#define EOF_INT 0x1000000
|
||||
|
||||
int read_signed_sample(FILE *fp) { // int = i32_t
|
||||
int byte, i, ret; // EOF -> 0x1000000
|
||||
|
||||
for (i = 0; i < channels; i++) {
|
||||
// i = 0: links bzw. mono
|
||||
byte = fgetc(fp);
|
||||
if (byte == EOF) return EOF_INT;
|
||||
if (i == 0) ret = byte;
|
||||
|
||||
if (bits_sample == 16) {
|
||||
byte = fgetc(fp);
|
||||
if (byte == EOF) return EOF_INT;
|
||||
if (i == 0) ret += byte << 8;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
if (bits_sample == 8) return ret-128; // 8bit: 00..FF, centerpoint 0x80=128
|
||||
if (bits_sample == 16) return (short)ret;
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
int par=1, par_alt=1;
|
||||
unsigned long sample_count = 0;
|
||||
|
||||
int read_bits_fsk(FILE *fp, int *bit, int *len) {
|
||||
int n, sample, y0;
|
||||
float l, x1;
|
||||
static float x0;
|
||||
|
||||
n = 0;
|
||||
do{
|
||||
y0 = sample;
|
||||
sample = read_signed_sample(fp);
|
||||
if (sample == EOF_INT) return EOF;
|
||||
sample_count++;
|
||||
par_alt = par;
|
||||
par = (sample > 0) ? 1 : -1;
|
||||
n++;
|
||||
} while (par*par_alt > 0);
|
||||
|
||||
if (!option_res) l = (float)n / samples_per_bit;
|
||||
else { // genauere Bitlaengen-Messung
|
||||
x1 = sample/(float)(sample-y0); // hilft bei niedriger sample rate
|
||||
l = (n+x0-x1) / samples_per_bit; // meist mehr frames (nicht immer)
|
||||
x0 = x1;
|
||||
}
|
||||
|
||||
*len = (int)(l+0.5);
|
||||
|
||||
if (!option_inv) *bit = (1+par_alt)/2; // oben 1, unten -1
|
||||
else *bit = (1-par_alt)/2; // sdr#<rev1381?, invers: unten 1, oben -1
|
||||
|
||||
/* Y-offset ? */
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* ------------------------------------------------------------------------------------ */
|
||||
|
||||
#define BITFRAME_LEN 1200
|
||||
#define RAWBITFRAME_LEN (BITFRAME_LEN*2)
|
||||
|
||||
char frame_rawbits[RAWBITFRAME_LEN+10]; // braucht eigentlich nur 1/4
|
||||
char frame_bits[BITFRAME_LEN+10];
|
||||
|
||||
#define HEADLEN 24
|
||||
#define RAWHEADLEN (2*HEADLEN)
|
||||
|
||||
char header0x049DCE[] = // 0x049DCE =
|
||||
"101010101011010100101011001101001100101011001101"; // 00000100 10011101 11001110
|
||||
char header0x049DCEbits[] = "000001001001110111001110";
|
||||
//111110110110001000110000
|
||||
char header0xFB6230[] = // 0xFB6230 =
|
||||
"110011001101001101001101010100101010110010101010"; // 11111011 01100010 00110000
|
||||
char header0xFB6230bits[] = "111110110110001000110000";
|
||||
// 0x049DCE ^ 0xFB6230 = 0xFFFFFE
|
||||
|
||||
char buf[RAWHEADLEN+1] = "xxxxxxxxxx\0";
|
||||
int bufpos = 0;
|
||||
|
||||
/* -------------------------------------------------------------------------- */
|
||||
|
||||
void inc_bufpos() {
|
||||
bufpos = (bufpos+1) % RAWHEADLEN;
|
||||
}
|
||||
|
||||
|
||||
char cb_inv(char c) {
|
||||
if (c == '0') return '1';
|
||||
if (c == '1') return '0';
|
||||
return c;
|
||||
}
|
||||
|
||||
int compare_subheader() {
|
||||
int i, j;
|
||||
|
||||
i = 0;
|
||||
j = bufpos;
|
||||
while (i < RAWHEADLEN) {
|
||||
if (j < 0) j = RAWHEADLEN-1;
|
||||
if (buf[j] != header0x049DCE[RAWHEADLEN-1-i]) break;
|
||||
j--;
|
||||
i++;
|
||||
}
|
||||
if (i == RAWHEADLEN) return 1;
|
||||
|
||||
i = 0;
|
||||
j = bufpos;
|
||||
while (i < RAWHEADLEN) {
|
||||
if (j < 0) j = RAWHEADLEN-1;
|
||||
if (buf[j] != cb_inv(header0x049DCE[RAWHEADLEN-1-i])) break;
|
||||
j--;
|
||||
i++;
|
||||
}
|
||||
if (i == RAWHEADLEN) return 3;
|
||||
|
||||
i = 0;
|
||||
j = bufpos;
|
||||
while (i < RAWHEADLEN) {
|
||||
if (j < 0) j = RAWHEADLEN-1;
|
||||
if (buf[j] != header0xFB6230[RAWHEADLEN-1-i]) break;
|
||||
j--;
|
||||
i++;
|
||||
}
|
||||
if (i == RAWHEADLEN) return 2;
|
||||
|
||||
i = 0;
|
||||
j = bufpos;
|
||||
while (i < RAWHEADLEN) {
|
||||
if (j < 0) j = RAWHEADLEN-1;
|
||||
if (buf[j] != cb_inv(header0xFB6230[RAWHEADLEN-1-i])) break;
|
||||
j--;
|
||||
i++;
|
||||
}
|
||||
if (i == RAWHEADLEN) return 4;
|
||||
|
||||
return 0;
|
||||
|
||||
}
|
||||
|
||||
|
||||
|
||||
/* -------------------------------------------------------------------------- */
|
||||
|
||||
int biphi_s(char* frame_rawbits, ui8_t *frame_bits) {
|
||||
int j = 0;
|
||||
int byt;
|
||||
|
||||
j = 0;
|
||||
while ((byt = frame_rawbits[2*j]) && frame_rawbits[2*j+1]) {
|
||||
if ((byt < 0x30) || (byt > 0x31)) break;
|
||||
|
||||
if ( frame_rawbits[2*j] == frame_rawbits[2*j+1] ) { byt = 1; }
|
||||
else { byt = 0; }
|
||||
|
||||
frame_bits[j] = byt;
|
||||
j++;
|
||||
}
|
||||
frame_bits[j] = 0;
|
||||
return j;
|
||||
}
|
||||
|
||||
/* -------------------------------------------------------------------------- */
|
||||
/*
|
||||
ui32_t bitstr2val(char *bits, int len) {
|
||||
int j;
|
||||
ui8_t bit;
|
||||
ui32_t val;
|
||||
if ((len < 0) || (len > 32)) return -1;
|
||||
val = 0;
|
||||
for (j = 0; j < len; j++) {
|
||||
bit = bits[j] - 0x30;
|
||||
val |= (bit << (len-1-j)); // big endian
|
||||
//val |= (bit << j); // little endian
|
||||
}
|
||||
return val;
|
||||
}
|
||||
*/
|
||||
ui32_t bits2val(ui8_t bits[], int len) {
|
||||
int j;
|
||||
ui8_t bit;
|
||||
ui32_t val;
|
||||
if ((len < 0) || (len > 32)) return -1;
|
||||
val = 0;
|
||||
for (j = 0; j < len; j++) {
|
||||
bit = bits[j];
|
||||
val |= (bit << (len-1-j)); // big endian
|
||||
//val |= (bit << j); // little endian
|
||||
}
|
||||
return val;
|
||||
}
|
||||
|
||||
/* -------------------------------------------------------------------------- */
|
||||
|
||||
|
||||
int main(int argc, char **argv) {
|
||||
|
||||
FILE *fp;
|
||||
char *fpname;
|
||||
int i, j;
|
||||
int bit_count = 0,
|
||||
header_found = 0,
|
||||
bit, len;
|
||||
|
||||
int counter;
|
||||
ui32_t val;
|
||||
ui32_t dat2;
|
||||
int lat, lat1, lat2,
|
||||
lon, lon1, lon2,
|
||||
alt, alt1, alt2;
|
||||
int latdeg,londeg;
|
||||
double latmin, lonmin;
|
||||
ui32_t t1, t2, ms, min, std, tt, mm, jj;
|
||||
|
||||
|
||||
#ifdef CYGWIN
|
||||
_setmode(fileno(stdin), _O_BINARY); // _setmode(_fileno(stdin), _O_BINARY);
|
||||
#endif
|
||||
setbuf(stdout, NULL);
|
||||
|
||||
|
||||
fpname = argv[0];
|
||||
++argv;
|
||||
while ((*argv) && (!wavloaded)) {
|
||||
if ( (strcmp(*argv, "-h") == 0) || (strcmp(*argv, "--help") == 0) ) {
|
||||
help_out:
|
||||
fprintf(stderr, "%s <-n> [options] audio.wav\n", fpname);
|
||||
fprintf(stderr, " n=1,2\n");
|
||||
fprintf(stderr, " options:\n");
|
||||
//fprintf(stderr, " -v, --verbose\n");
|
||||
fprintf(stderr, " -r, --raw\n");
|
||||
return 0;
|
||||
}
|
||||
else if ( (strcmp(*argv, "-r") == 0) || (strcmp(*argv, "--raw") == 0) ) {
|
||||
option_raw = 1;
|
||||
}
|
||||
else if (strcmp(*argv, "--res") == 0) { option_res = 1; }
|
||||
else if ( (strcmp(*argv, "-i") == 0) || (strcmp(*argv, "--invert") == 0) ) {
|
||||
option_inv = 1; // nicht noetig
|
||||
}
|
||||
else if ( (strcmp(*argv, "-2") == 0) ) {
|
||||
option2 = 1;
|
||||
}
|
||||
else if ( (strcmp(*argv, "-1") == 0) ) {
|
||||
option1 = 1;
|
||||
}
|
||||
else if (strcmp(*argv, "--ecc") == 0) { option_ecc = 1; }
|
||||
else if ( (strcmp(*argv, "-v") == 0) ) {
|
||||
option_verbose = 1;
|
||||
}
|
||||
else {
|
||||
if ((option1 == 1 && option2 == 1) || (!option_raw && option1 == 0 && option2 == 0)) goto help_out;
|
||||
fp = fopen(*argv, "rb");
|
||||
if (fp == NULL) {
|
||||
fprintf(stderr, "%s konnte nicht geoeffnet werden\n", *argv);
|
||||
return -1;
|
||||
}
|
||||
wavloaded = 1;
|
||||
}
|
||||
++argv;
|
||||
}
|
||||
if (!wavloaded) fp = stdin;
|
||||
|
||||
|
||||
i = read_wav_header(fp);
|
||||
if (i) {
|
||||
fclose(fp);
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (option_ecc) {
|
||||
rs_init_BCH64();
|
||||
}
|
||||
|
||||
|
||||
bufpos = 0;
|
||||
bit_count = 0;
|
||||
|
||||
while (!read_bits_fsk(fp, &bit, &len)) {
|
||||
|
||||
if (len == 0) { // reset_frame();
|
||||
/*
|
||||
if (byte_count > FRAME_LEN-20) {
|
||||
print_frame(byte_count);
|
||||
bit_count = 0;
|
||||
byte_count = FRAMESTART;
|
||||
header_found = 0;
|
||||
}
|
||||
*/
|
||||
//inc_bufpos();
|
||||
//buf[bufpos] = 'x';
|
||||
continue; // ...
|
||||
}
|
||||
|
||||
for (i = 0; i < len; i++) {
|
||||
|
||||
inc_bufpos();
|
||||
buf[bufpos] = 0x30 + bit; // Ascii
|
||||
|
||||
if (!header_found) {
|
||||
header_found = compare_subheader();
|
||||
if (header_found) {
|
||||
bit_count = 0;
|
||||
for (j = 0; j < HEADLEN; j++) {
|
||||
if (header_found % 2 == 1) frame_bits[j] = header0x049DCEbits[j] - 0x30;
|
||||
else frame_bits[j] = header0xFB6230bits[j] - 0x30;
|
||||
}
|
||||
}
|
||||
}
|
||||
else {
|
||||
frame_rawbits[bit_count] = 0x30 + bit;
|
||||
bit_count++;
|
||||
|
||||
if (bit_count >= RAWBITFRAME_LEN/4-RAWHEADLEN) { // 600-48
|
||||
frame_rawbits[bit_count] = '\0';
|
||||
|
||||
biphi_s(frame_rawbits, frame_bits+HEADLEN);
|
||||
|
||||
if (option_ecc) {
|
||||
for (block = 0; block < 6; block++) {
|
||||
|
||||
// prepare block-codeword
|
||||
for (j = 0; j < 46; j++) cw[45-j] = frame_bits[HEADLEN + block*46+j];
|
||||
for (j = 46; j < 63; j++) cw[j] = 0;
|
||||
|
||||
errors = rs_decode_bch_gf2t2(cw, err_pos, err_val);
|
||||
|
||||
// check parity,padding
|
||||
if (errors >= 0) {
|
||||
check_err = 0;
|
||||
for (i = 46; i < 63; i++) { if (cw[i] != 0) check_err = 0x1; }
|
||||
par = 1;
|
||||
for (i = 13; i < 13+16; i++) par ^= cw[i];
|
||||
if (cw[12] != par) check_err |= 0x100;
|
||||
par = 1;
|
||||
for (i = 30; i < 30+16; i++) par ^= cw[i];
|
||||
if (cw[29] != par) check_err |= 0x10;
|
||||
if (check_err) errors = -3;
|
||||
}
|
||||
if (errors >= 0) {
|
||||
for (j = 0; j < 46; j++) frame_bits[HEADLEN + block*46+j] = cw[45-j];
|
||||
}
|
||||
|
||||
if (errors < 0) block_err[block] = 0xE;
|
||||
else block_err[block] = errors;
|
||||
|
||||
}
|
||||
}
|
||||
|
||||
if (!option2 && !option_raw) {
|
||||
|
||||
if (header_found % 2 == 1) {
|
||||
val = bits2val(frame_bits+HEADLEN, 16);
|
||||
counter = val & 0xFFFF;
|
||||
if (counter % 2 == 0) printf("\n");
|
||||
//printf("[0x%04X = %d] ", counter, counter);
|
||||
printf("[%d] ", counter);
|
||||
|
||||
if (counter % 2 == 1) {
|
||||
t2 = bits2val(frame_bits+HEADLEN+5*46 , 8); // LSB
|
||||
t1 = bits2val(frame_bits+HEADLEN+5*46+8, 8);
|
||||
ms = (t1 << 8) | t2;
|
||||
std = bits2val(frame_bits+HEADLEN+5*46+17, 8);
|
||||
min = bits2val(frame_bits+HEADLEN+5*46+25, 8);
|
||||
printf(" ");
|
||||
printf("%02d:%02d:%06.3f ", std, min, (double)ms/1000.0);
|
||||
printf(" ");
|
||||
|
||||
//printf("\n");
|
||||
}
|
||||
}
|
||||
|
||||
if (header_found % 2 == 0) {
|
||||
val = bits2val(frame_bits+HEADLEN, 16);
|
||||
//printf("%04x ", val & 0xFFFF);
|
||||
if ((counter % 2 == 0)) { // (val & 0xFFFF) > 0) {// == 0x8080
|
||||
//offset=24+16+1;
|
||||
|
||||
lat1 = bits2val(frame_bits+HEADLEN+17, 16);
|
||||
lat2 = bits2val(frame_bits+HEADLEN+46, 16);
|
||||
lon1 = bits2val(frame_bits+HEADLEN+46+17, 16);
|
||||
lon2 = bits2val(frame_bits+HEADLEN+46+46, 16);
|
||||
alt1 = bits2val(frame_bits+HEADLEN+46+46+17, 16);
|
||||
alt2 = bits2val(frame_bits+HEADLEN+46+46+46, 16);
|
||||
|
||||
lat = (lat1 << 16) | lat2;
|
||||
lon = (lon1 << 16) | lon2;
|
||||
alt = (alt1 << 16) | alt2;
|
||||
//printf("%08X %08X %08X : ", lat, lon, alt);
|
||||
printf(" ");
|
||||
printf("%.6f %.6f %.2f", (double)lat/1e7, (double)lon/1e7, (double)alt/1e2);
|
||||
printf(" ");
|
||||
|
||||
jj = bits2val(frame_bits+HEADLEN+5*46+ 8, 8) + 0x0700;
|
||||
mm = bits2val(frame_bits+HEADLEN+5*46+17, 8);
|
||||
tt = bits2val(frame_bits+HEADLEN+5*46+25, 8);
|
||||
printf(" ");
|
||||
printf("%4d-%02d-%02d ", jj, mm, tt);
|
||||
printf(" ");
|
||||
|
||||
//printf("\n");
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
else if (option2 && !option_raw) {
|
||||
|
||||
if (header_found % 2 == 1) {
|
||||
val = bits2val(frame_bits+HEADLEN, 16);
|
||||
counter = val & 0xFFFF;
|
||||
if (counter % 2 == 0) printf("\n");
|
||||
//printf("[0x%04X = %d] ", counter, counter);
|
||||
printf("[%d] ", counter);
|
||||
|
||||
if (counter % 2 == 0) {
|
||||
t1 = bits2val(frame_bits+HEADLEN+5*46 , 8); // MSB
|
||||
t2 = bits2val(frame_bits+HEADLEN+5*46+8, 8);
|
||||
ms = (t1 << 8) | t2;
|
||||
std = bits2val(frame_bits+HEADLEN+5*46+17, 8);
|
||||
min = bits2val(frame_bits+HEADLEN+5*46+25, 8);
|
||||
printf(" ");
|
||||
printf("%02d:%02d:%06.3f ", std, min, (double)ms/1000.0);
|
||||
printf(" ");
|
||||
}
|
||||
}
|
||||
|
||||
if (header_found % 2 == 0) {
|
||||
val = bits2val(frame_bits+HEADLEN, 16);
|
||||
//printf("%04x ", val & 0xFFFF);
|
||||
if ((counter % 2 == 0)) { // (val & 0xFFFF) > 0) {// == 0x2390
|
||||
//offset=24+16+1;
|
||||
|
||||
dat2 = bits2val(frame_bits+HEADLEN, 16);
|
||||
printf("%05u (?%02d-%02d-%02d) ", dat2, dat2/1000,(dat2/10)%100, (dat2%10)+10);
|
||||
|
||||
lat1 = bits2val(frame_bits+HEADLEN+17, 16);
|
||||
lat2 = bits2val(frame_bits+HEADLEN+46, 16);
|
||||
lon1 = bits2val(frame_bits+HEADLEN+46+17, 16);
|
||||
lon2 = bits2val(frame_bits+HEADLEN+46+46, 16);
|
||||
alt1 = bits2val(frame_bits+HEADLEN+46+46+17, 16);
|
||||
alt2 = bits2val(frame_bits+HEADLEN+46+46+46, 8);
|
||||
|
||||
lat = (lat1 << 16) | lat2;
|
||||
lon = (lon1 << 16) | lon2;
|
||||
alt = (alt1 << 8) | alt2;
|
||||
latdeg = (int)lat / 1e6;
|
||||
latmin = (double)(lat/1e6-latdeg)*100/60.0;
|
||||
londeg = (int)lon / 1e6;
|
||||
lonmin = (double)(lon/1e6-londeg)*100/60.0;
|
||||
//printf("%08X %08X %08X : ", lat, lon, alt);
|
||||
printf(" ");
|
||||
printf("%.6f %.6f %.2f", (double)latdeg+latmin, (double)londeg+lonmin, (double)alt/1e2);
|
||||
printf(" ");
|
||||
}
|
||||
//else { printf("\n"); }
|
||||
}
|
||||
|
||||
}
|
||||
else { // raw
|
||||
|
||||
val = bits2val(frame_bits, HEADLEN);
|
||||
printf("%06X ", val & 0xFFFFFF);
|
||||
printf(" ");
|
||||
for (i = 0; i < 6; i++) {
|
||||
|
||||
val = bits2val(frame_bits+HEADLEN+46*i , 16);
|
||||
printf("%04X ", val & 0xFFFF);
|
||||
|
||||
val = bits2val(frame_bits+HEADLEN+46*i+17, 16);
|
||||
printf("%04X ", val & 0xFFFF);
|
||||
|
||||
val = bits2val(frame_bits+HEADLEN+46*i+34, 12);
|
||||
//printf("%03X ", val & 0xFFF);
|
||||
//printf(" ");
|
||||
}
|
||||
printf("\n");
|
||||
}
|
||||
|
||||
bit_count = 0;
|
||||
header_found = 0;
|
||||
|
||||
if (option_ecc && option_verbose) {
|
||||
printf("#");
|
||||
for (block = 0; block < 6; block++) printf("%X", block_err[block]);
|
||||
printf("# ");
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
printf("\n");
|
||||
|
||||
fclose(fp);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
|
@ -1,10 +1,10 @@
|
|||
|
||||
/*
|
||||
* big endian forest
|
||||
*
|
||||
*
|
||||
* Meisei radiosondes
|
||||
* author: zilog80
|
||||
*
|
||||
*
|
||||
*/
|
||||
|
||||
/*
|
||||
|
|
@ -68,7 +68,7 @@ dass 1 ist, wenn die Anzahl 1en in den 16 bit davor gerade ist, und sonst 0.
|
|||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
// #include <math.h>
|
||||
#ifdef WIN
|
||||
#ifdef CYGWIN
|
||||
#include <fcntl.h> // cygwin: _setmode()
|
||||
#include <io.h>
|
||||
#endif
|
||||
|
|
@ -177,7 +177,7 @@ int read_signed_sample(FILE *fp) { // int = i32_t
|
|||
byte = fgetc(fp);
|
||||
if (byte == EOF) return EOF_INT;
|
||||
if (i == 0) ret = byte;
|
||||
|
||||
|
||||
if (bits_sample == 16) {
|
||||
byte = fgetc(fp);
|
||||
if (byte == EOF) return EOF_INT;
|
||||
|
|
@ -347,7 +347,7 @@ int biphi_s(char* frame_rawbits, char *frame_bits) {
|
|||
int byt;
|
||||
|
||||
j = 0;
|
||||
while (byt = frame_rawbits[j]) {
|
||||
while ( (byt = frame_rawbits[2*j]) && frame_rawbits[2*j+1] ) {
|
||||
if ((byt < 0x30) || (byt > 0x31)) break;
|
||||
|
||||
if ( frame_rawbits[2*j] == frame_rawbits[2*j+1] ) { byt = '1'; }
|
||||
|
|
@ -400,10 +400,10 @@ int main(int argc, char **argv) {
|
|||
ui32_t t1, t2, ms, min, std, tt, mm, jj;
|
||||
|
||||
|
||||
#ifdef WIN
|
||||
#ifdef CYGWIN
|
||||
_setmode(fileno(stdin), _O_BINARY); // _setmode(_fileno(stdin), _O_BINARY);
|
||||
setbuf(stdout, NULL);
|
||||
#endif
|
||||
setbuf(stdout, NULL);
|
||||
|
||||
fpname = argv[0];
|
||||
++argv;
|
||||
|
|
@ -493,7 +493,7 @@ int main(int argc, char **argv) {
|
|||
else {
|
||||
frame_rawbits[bit_count] = 0x30 + bit;
|
||||
bit_count++;
|
||||
|
||||
|
||||
if (bit_count >= RAWBITFRAME_LEN/4-RAWHEADLEN) { // 600-48
|
||||
frame_rawbits[bit_count] = '\0';
|
||||
|
||||
|
|
@ -514,7 +514,7 @@ int main(int argc, char **argv) {
|
|||
ms = (t1 << 8) | t2;
|
||||
std = bitstr2val(frame_bits+HEADLEN+5*46+17, 8);
|
||||
min = bitstr2val(frame_bits+HEADLEN+5*46+25, 8);
|
||||
printf(" ");
|
||||
printf(" ");
|
||||
printf("%02d:%02d:%06.3f ", std, min, (double)ms/1000.0);
|
||||
printf(" ");
|
||||
|
||||
|
|
@ -570,7 +570,7 @@ int main(int argc, char **argv) {
|
|||
ms = (t1 << 8) | t2;
|
||||
std = bitstr2val(frame_bits+HEADLEN+5*46+17, 8);
|
||||
min = bitstr2val(frame_bits+HEADLEN+5*46+25, 8);
|
||||
printf(" ");
|
||||
printf(" ");
|
||||
printf("%02d:%02d:%06.3f ", std, min, (double)ms/1000.0);
|
||||
printf(" ");
|
||||
}
|
||||
|
|
|
|||
Ładowanie…
Reference in New Issue