kopia lustrzana https://github.com/rs1729/RS
984 wiersze
27 KiB
C
984 wiersze
27 KiB
C
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/*
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* radiosondes RS41-SG(P)
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* author: zilog80
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* usage:
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* gcc rs41.c -lm -o rs41
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* ./rs41 [options] audio.wav
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* options:
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* -v, -vx, -vv (info, aux, info/conf)
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* -r, --raw
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* -i, --invert
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* --crc (check CRC)
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* --avg (moving average)
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* -b (alt. Demod.)
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*
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* ./rs41 audio.wav
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* ./rs41 -r audio.wav | less -S
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* ./rs41 -v audio.wav 1> /dev/null
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* ./rs41 -v audio.wav 1> pos.txt
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* ./rs41 -vv audio.wav 2> cal.txt
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* ./rs41 -vv audio.wav 2>&1 >/dev/null | grep 0x00
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* ./rs41 < audio.wav
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* sox -t oss /dev/dsp -t wav - 2>/dev/null | ./rs41
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* sox -t oss /dev/dsp -t wav - lowpass 2600 2>/dev/null | ./rs41
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* ./rs41b -vx -b --avg audio_aux.wav
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* sox audio.wav -t wav - lowpass 3400 | ../rs41b -v -b
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*/
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#include <stdio.h>
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#include <string.h>
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#include <math.h>
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#ifdef CYGWIN
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#include <fcntl.h> // cygwin: _setmode()
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#include <io.h>
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#endif
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typedef unsigned char ui8_t;
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typedef struct {
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int frnr;
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char id[9];
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int week; int gpssec;
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int jahr; int monat; int tag;
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int wday;
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int std; int min; float sek;
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double lat; double lon; double alt;
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double vN; double vE; double vU;
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double vH; double vD; double vD2;
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} gpx_t;
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gpx_t gpx;
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int option_verbose = 0, // ausfuehrliche Anzeige
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option_raw = 0, // rohe Frames
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option_inv = 0, // invertiert Signal
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option_res = 0, // genauere Bitmessung
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option_crc = 0, // check CRC
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option_avg = 0, // moving average
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option_b = 0,
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wavloaded = 0;
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#define HEADOFS 24 // HEADOFS+HEADLEN <= 64
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#define HEADLEN 32 // HEADOFS+HEADLEN mod 8 = 0
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#define FRAMESTART ((HEADOFS+HEADLEN)/8)
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/* 10 B6 CA 11 22 96 12 F8 */
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char header[] = "0000100001101101010100111000100001000100011010010100100000011111";
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char buf[HEADLEN+1] = "x";
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int bufpos = -1;
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#define NDATA_LEN 320
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#define XDATA_LEN 198
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#define FRAME_LEN (NDATA_LEN+XDATA_LEN)
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ui8_t frame[FRAME_LEN] = { 0x10, 0xB6, 0xCA, 0x11, 0x22, 0x96, 0x12, 0xF8};
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#define MASK_LEN 64
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ui8_t mask[MASK_LEN] = { 0x96, 0x83, 0x3E, 0x51, 0xB1, 0x49, 0x08, 0x98,
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0x32, 0x05, 0x59, 0x0E, 0xF9, 0x44, 0xC6, 0x26,
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0x21, 0x60, 0xC2, 0xEA, 0x79, 0x5D, 0x6D, 0xA1,
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0x54, 0x69, 0x47, 0x0C, 0xDC, 0xE8, 0x5C, 0xF1,
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0xF7, 0x76, 0x82, 0x7F, 0x07, 0x99, 0xA2, 0x2C,
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0x93, 0x7C, 0x30, 0x63, 0xF5, 0x10, 0x2E, 0x61,
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0xD0, 0xBC, 0xB4, 0xB6, 0x06, 0xAA, 0xF4, 0x23,
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0x78, 0x6E, 0x3B, 0xAE, 0xBF, 0x7B, 0x4C, 0xC1};
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/* LFSR: ab i=8 (mod 64):
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* m[16+i] = m[i] ^ m[i+2] ^ m[i+4] ^ m[i+6]
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* ________________3205590EF944C6262160C2EA795D6DA15469470CDCE85CF1
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* F776827F0799A22C937C3063F5102E61D0BCB4B606AAF423786E3BAEBF7B4CC196833E51B1490898
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*/
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/* ------------------------------------------------------------------------------------ */
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// option_b: exakte Baudrate wichtig!
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// im Prinzip in sync-preamble/header ermittelbar
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#define BAUD_RATE 4800
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int sample_rate = 0, bits_sample = 0, channels = 0;
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float samples_per_bit = 0;
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int findstr(char *buff, char *str, int pos) {
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int i;
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for (i = 0; i < 4; i++) {
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if (buff[(pos+i)%4] != str[i]) break;
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}
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return i;
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}
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int read_wav_header(FILE *fp) {
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char txt[4+1] = "\0\0\0\0";
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unsigned char dat[4];
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int byte, p=0;
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if (fread(txt, 1, 4, fp) < 4) return -1;
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if (strncmp(txt, "RIFF", 4)) return -1;
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if (fread(txt, 1, 4, fp) < 4) return -1;
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// pos_WAVE = 8L
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if (fread(txt, 1, 4, fp) < 4) return -1;
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if (strncmp(txt, "WAVE", 4)) return -1;
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// pos_fmt = 12L
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for ( ; ; ) {
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if ( (byte=fgetc(fp)) == EOF ) return -1;
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txt[p % 4] = byte;
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p++; if (p==4) p=0;
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if (findstr(txt, "fmt ", p) == 4) break;
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}
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if (fread(dat, 1, 4, fp) < 4) return -1;
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if (fread(dat, 1, 2, fp) < 2) return -1;
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if (fread(dat, 1, 2, fp) < 2) return -1;
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channels = dat[0] + (dat[1] << 8);
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if (fread(dat, 1, 4, fp) < 4) return -1;
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memcpy(&sample_rate, dat, 4); //sample_rate = dat[0]|(dat[1]<<8)|(dat[2]<<16)|(dat[3]<<24);
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if (fread(dat, 1, 4, fp) < 4) return -1;
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if (fread(dat, 1, 2, fp) < 2) return -1;
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//byte = dat[0] + (dat[1] << 8);
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if (fread(dat, 1, 2, fp) < 2) return -1;
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bits_sample = dat[0] + (dat[1] << 8);
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// pos_dat = 36L + info
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for ( ; ; ) {
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if ( (byte=fgetc(fp)) == EOF ) return -1;
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txt[p % 4] = byte;
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p++; if (p==4) p=0;
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if (findstr(txt, "data", p) == 4) break;
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}
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if (fread(dat, 1, 4, fp) < 4) return -1;
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fprintf(stderr, "sample_rate: %d\n", sample_rate);
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fprintf(stderr, "bits : %d\n", bits_sample);
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fprintf(stderr, "channels : %d\n", channels);
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if ((bits_sample != 8) && (bits_sample != 16)) return -1;
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samples_per_bit = sample_rate/(float)BAUD_RATE;
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fprintf(stderr, "samples/bit: %.2f\n", samples_per_bit);
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return 0;
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}
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#define EOF_INT 0x1000000
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#define LEN_movAvg 3
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int movAvg[LEN_movAvg];
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unsigned long sample_count = 0;
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double bitgrenze = 0;
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int read_signed_sample(FILE *fp) { // int = i32_t
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int byte, i, sample, s=0; // EOF -> 0x1000000
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for (i = 0; i < channels; i++) {
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// i = 0: links bzw. mono
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byte = fgetc(fp);
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if (byte == EOF) return EOF_INT;
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if (i == 0) sample = byte;
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if (bits_sample == 16) {
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byte = fgetc(fp);
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if (byte == EOF) return EOF_INT;
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if (i == 0) sample += byte << 8;
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}
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}
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if (bits_sample == 8) s = sample-128; // 8bit: 00..FF, centerpoint 0x80=128
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if (bits_sample == 16) s = (short)sample;
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if (option_avg) {
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movAvg[sample_count % LEN_movAvg] = s;
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s = 0;
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for (i = 0; i < LEN_movAvg; i++) s += movAvg[i];
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s = (s+0.5) / LEN_movAvg;
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}
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sample_count++;
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return s;
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}
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int par=1, par_alt=1;
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int read_bits_fsk(FILE *fp, int *bit, int *len) {
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static int sample;
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int n, y0;
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float l, x1;
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static float x0;
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n = 0;
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do{
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y0 = sample;
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sample = read_signed_sample(fp);
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if (sample == EOF_INT) return EOF;
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//sample_count++; // in read_signed_sample()
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par_alt = par;
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par = (sample >= 0) ? 1 : -1; // 8bit: 0..127,128..255 (-128..-1,0..127)
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n++;
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} while (par*par_alt > 0);
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if (!option_res) l = (float)n / samples_per_bit;
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else { // genauere Bitlaengen-Messung
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x1 = sample/(float)(sample-y0); // hilft bei niedriger sample rate
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l = (n+x0-x1) / samples_per_bit; // meist mehr frames (nicht immer)
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x0 = x1;
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}
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*len = (int)(l+0.5);
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if (!option_inv) *bit = (1+par_alt)/2; // oben 1, unten -1
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else *bit = (1-par_alt)/2; // sdr#<rev1381?, invers: unten 1, oben -1
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/* Y-offset ? */
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return 0;
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}
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int bitstart = 0;
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int read_rawbit(FILE *fp, int *bit) {
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int sample;
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int n, sum;
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sum = 0;
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n = 0;
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if (bitstart) {
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n = 1; // d.h. bitgrenze = sample_count-1 (?)
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bitgrenze = sample_count-1;
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bitstart = 0;
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}
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bitgrenze += samples_per_bit;
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do {
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sample = read_signed_sample(fp);
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if (sample == EOF_INT) return EOF;
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//sample_count++; // in read_signed_sample()
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//par = (sample >= 0) ? 1 : -1; // 8bit: 0..127,128..255 (-128..-1,0..127)
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sum += sample;
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n++;
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} while (sample_count < bitgrenze); // n < samples_per_bit
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if (sum >= 0) *bit = 1;
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else *bit = 0;
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if (option_inv) *bit ^= 1;
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return 0;
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}
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/* ------------------------------------------------------------------------------------ */
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int bits2byte(char bits[]) {
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int i, byteval=0, d=1;
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for (i = 0; i < 8; i++) { // little endian
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/* for (i = 7; i >= 0; i--) { // big endian */
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if (bits[i] == 1) byteval += d;
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else if (bits[i] == 0) byteval += 0;
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else return 0x100;
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d <<= 1;
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}
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return byteval;
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}
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void inc_bufpos() {
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bufpos = (bufpos+1) % HEADLEN;
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}
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int compare() {
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int i=0, j = bufpos;
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while (i < HEADLEN) {
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if (j < 0) j = HEADLEN-1;
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if (buf[j] != header[HEADOFS+HEADLEN-1-i]) break;
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j--;
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i++;
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}
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return i;
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}
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ui8_t xorbyte(int pos) {
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return frame[pos] ^ mask[pos % MASK_LEN];
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}
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/* ------------------------------------------------------------------------------------ */
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/*
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* Convert GPS Week and Seconds to Modified Julian Day.
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* - Adapted from sci.astro FAQ.
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* - Ignores UTC leap seconds.
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*/
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void Gps2Date(long GpsWeek, long GpsSeconds, int *Year, int *Month, int *Day) {
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long GpsDays, Mjd;
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long J, C, Y, M;
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GpsDays = GpsWeek * 7 + (GpsSeconds / 86400);
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Mjd = 44244 + GpsDays;
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J = Mjd + 2468570;
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C = 4 * J / 146097;
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J = J - (146097 * C + 3) / 4;
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Y = 4000 * (J + 1) / 1461001;
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J = J - 1461 * Y / 4 + 31;
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M = 80 * J / 2447;
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*Day = J - 2447 * M / 80;
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J = M / 11;
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*Month = M + 2 - (12 * J);
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*Year = 100 * (C - 49) + Y + J;
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}
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/* ------------------------------------------------------------------------------------ */
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/*
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Pos: SubHeader, 1+1 byte (ID+LEN)
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0x039: 7928 FrameNumber+SondeID
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+(0x050: 0732 CalFrames 0x00..0x32)
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0x065: 7A2A PTU
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0x093: 7C1E GPS1: RXM-RAW (0x02 0x10) Week, TOW, Sats
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0x0B5: 7D59 GPS2: RXM-RAW (0x02 0x10) pseudorange, doppler
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0x112: 7B15 GPS3: NAV-SOL (0x01 0x06) ECEF-POS, ECEF-VEL
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0x12B: 7611 00
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0x12B: 7Exx AUX-xdata
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*/
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#define xor_FRAME 0x1713 // ^0x6E3B=0x7928
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#define pck_FRAME 0x7928
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#define pos_FRAME 0x039
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#define pos_FrameNb 0x03B // 2 byte
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#define pos_SondeID 0x03D // 8 byte
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#define pos_CalData 0x052 // 1 byte, counter 0x00..0x32
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#define pos_Calfreq 0x055 // 2 byte, calfr 0x00
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#define pos_Calburst 0x05E // 1 byte, calfr 0x02
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// ? #define pos_Caltimer 0x05A // 2 byte, calfr 0x02 ?
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#define pos_CalRSTyp 0x05B // 8 byte, calfr 0x21 (+2 byte in 0x22?)
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// weitere chars in calfr 0x22/0x23; weitere ID
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#define pck_PTU 0x7A2A // PTU
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#define pos_PTU 0x065
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#define xor_GPS1 0x9667 // ^0xEA79=0x7C1E
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#define pck_GPS1 0x7C1E // RXM-RAW (0x02 0x10)
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#define pos_GPS1 0x093
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#define pos_GPSweek 0x095 // 2 byte
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#define pos_GPSiTOW 0x097 // 4 byte
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#define pos_satsN 0x09B // 12x2 byte
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#define pck_GPS2 0x7D59 // RXM-RAW (0x02 0x10)
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#define pos_GPS2 0x0B5
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#define pos_minPR 0x0B7 // 4 byte
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#define pos_FF 0x0BB // 1 byte
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#define pos_dataSats 0x0BC // 12x(4+3) byte (4: pseudorange, 3: doppler)
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#define xor_GPS3 0xB9FF // ^0xC2EA=0x7B15
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#define pck_GPS3 0x7B15 // NAV-SOL (0x01 0x06)
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#define pos_GPS3 0x112
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#define pos_GPSecefX 0x114 // 4 byte
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#define pos_GPSecefY 0x118 // 4 byte
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#define pos_GPSecefZ 0x11C // 4 byte
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#define pos_GPSecefV 0x120 // 3*2 byte
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#define pos_numSats 0x126 // 1 byte
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#define pos_sAcc 0x127 // 1 byte
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#define pos_pDOP 0x128 // 1 byte
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#define pck_AUX 0x7E00 // LEN variable
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#define pos_AUX 0x12B
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/*
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double c = 299.792458e6;
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double L1 = 1575.42e6;
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*/
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int crc16x(int start, int len) {
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int crc16poly = 0x1021;
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int rem = 0xFFFF, i, j;
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int xbyte;
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if (start+len+2 > FRAME_LEN) return -1;
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for (i = 0; i < len; i++) {
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xbyte = xorbyte(start+i);
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rem = rem ^ (xbyte << 8);
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for (j = 0; j < 8; j++) {
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if (rem & 0x8000) {
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rem = (rem << 1) ^ crc16poly;
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}
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else {
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rem = (rem << 1);
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}
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rem &= 0xFFFF;
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}
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}
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return rem;
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}
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unsigned shiftLeft(int pos) {
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unsigned tmp;
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tmp = (frame[pos+1]<<8) + frame[pos];
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tmp = (tmp >> 1) & 0xFF;
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return tmp;
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}
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int shiftRight(int pos) {
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unsigned tmp;
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tmp = (frame[pos]<<8) + frame[pos-1];
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tmp = (tmp >> 7) & 0xFF;
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return tmp;
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}
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void shiftFrame(int pos, int shift) {
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unsigned byte, byte1, byte2;
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if (shift > 0) {
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while (pos < FRAME_LEN) {
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byte = shiftLeft(pos);
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frame[pos] = byte;
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pos++;
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}
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}
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if (shift < 0) {
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byte1 = shiftRight(pos);
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pos++;
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while (pos < FRAME_LEN) {
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byte2 = shiftRight(pos);
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frame[pos-1] = byte1;
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byte1 = byte2;
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pos++;
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}
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}
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}
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int getShift(int pos, unsigned head) {
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unsigned byte;
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int shift = 0;
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byte = (frame[pos]<<8) + frame[pos+1];
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// fprintf(stdout, "0x%04X ", byte ); // xor_FRAME ^ 0x6E38 == 0x7928 ?
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if (byte != head) {
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byte = (shiftLeft(pos)<<8) + shiftLeft(pos+1);
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//fprintf(stdout, " %04X", byte);
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if (byte == xor_FRAME) shift = 1;
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else {
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byte = (shiftRight(pos)<<8) + shiftRight(pos+1);
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if (byte == head) shift = -1;
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}
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if (!shift) return 0x100;
|
|
//printf("shift:%2d ", shift);
|
|
}
|
|
return shift;
|
|
}
|
|
|
|
int get_FrameNb() {
|
|
int i;
|
|
unsigned byte;
|
|
ui8_t frnr_bytes[2];
|
|
int frnr;
|
|
/* int shift = 0;
|
|
|
|
shift = getShift(pos_FRAME, xor_FRAME);
|
|
if (shift == 0x100) return 0x100;
|
|
//printf("shift:%2d ", shift);
|
|
shiftFrame(pos_FRAME, shift);
|
|
*/
|
|
for (i = 0; i < 2; i++) {
|
|
byte = xorbyte(pos_FrameNb + i);
|
|
frnr_bytes[i] = byte;
|
|
}
|
|
|
|
frnr = frnr_bytes[0] + (frnr_bytes[1] << 8);
|
|
gpx.frnr = frnr;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int get_SondeID() {
|
|
int i;
|
|
unsigned byte;
|
|
ui8_t sondeid_bytes[8];
|
|
|
|
for (i = 0; i < 8; i++) {
|
|
byte = xorbyte(pos_SondeID + i);
|
|
if ((byte < 0x20) || (byte > 0x7E)) return -1;
|
|
sondeid_bytes[i] = byte;
|
|
}
|
|
|
|
for (i = 0; i < 8; i++) {
|
|
gpx.id[i] = sondeid_bytes[i];
|
|
}
|
|
gpx.id[8] = '\0';
|
|
|
|
return 0;
|
|
}
|
|
|
|
int get_GPSweek() {
|
|
int i;
|
|
unsigned byte;
|
|
ui8_t gpsweek_bytes[2];
|
|
int gpsweek;
|
|
/* int shift = 0;
|
|
|
|
shift = getShift(pos_GPS1, xor_GPS1);
|
|
if (shift == 0x100) return 0x100;
|
|
//printf("shift:%2d ", shift);
|
|
shiftFrame(pos_GPS1, shift);
|
|
*/
|
|
for (i = 0; i < 2; i++) {
|
|
byte = xorbyte(pos_GPSweek + i);
|
|
gpsweek_bytes[i] = byte;
|
|
}
|
|
|
|
gpsweek = gpsweek_bytes[0] + (gpsweek_bytes[1] << 8);
|
|
//if (gpsweek < 0) { gpx.week = -1; return -1; } // (short int)
|
|
gpx.week = gpsweek;
|
|
|
|
return 0;
|
|
}
|
|
|
|
char weekday[7][3] = { "So", "Mo", "Di", "Mi", "Do", "Fr", "Sa"};
|
|
|
|
int get_GPStime() {
|
|
int i;
|
|
unsigned byte;
|
|
ui8_t gpstime_bytes[4];
|
|
int gpstime = 0, // 32bit
|
|
day;
|
|
int ms;
|
|
int crclen;
|
|
int crcdat;
|
|
int crcpos = pos_GPS1;
|
|
|
|
if ( option_crc ) {
|
|
// xorbyte(crcpos) == (HEAD_tow>>8) & 0xFF ?
|
|
crclen = xorbyte(crcpos+1);
|
|
crcdat = xorbyte(crcpos+2+crclen) | (xorbyte(crcpos+2+crclen+1)<<8);
|
|
if ( crcdat != crc16x(crcpos+2, crclen) ) {
|
|
return -2; // CRC error
|
|
}
|
|
}
|
|
|
|
|
|
for (i = 0; i < 4; i++) {
|
|
byte = xorbyte(pos_GPSiTOW + i);
|
|
gpstime_bytes[i] = byte;
|
|
}
|
|
|
|
memcpy(&gpstime, gpstime_bytes, 4);
|
|
ms = gpstime % 1000;
|
|
gpstime /= 1000;
|
|
|
|
gpx.gpssec = gpstime;
|
|
|
|
day = (gpstime / (24 * 3600)) % 7;
|
|
//if ((day < 0) || (day > 6)) return -1; // besser CRC-check
|
|
|
|
gpstime %= (24*3600);
|
|
|
|
gpx.wday = day;
|
|
gpx.std = gpstime / 3600;
|
|
gpx.min = (gpstime % 3600) / 60;
|
|
gpx.sek = gpstime % 60 + ms/1000.0;
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
#define EARTH_a 6378137.0
|
|
#define EARTH_b 6356752.31424518
|
|
#define EARTH_a2_b2 (EARTH_a*EARTH_a - EARTH_b*EARTH_b)
|
|
|
|
double a = EARTH_a,
|
|
b = EARTH_b,
|
|
a_b = EARTH_a2_b2,
|
|
e2 = EARTH_a2_b2 / (EARTH_a*EARTH_a),
|
|
ee2 = EARTH_a2_b2 / (EARTH_b*EARTH_b);
|
|
|
|
void ecef2elli(double X[], double *lat, double *lon, double *alt) {
|
|
double phi, lam, R, p, t;
|
|
|
|
lam = atan2( X[1] , X[0] );
|
|
|
|
p = sqrt( X[0]*X[0] + X[1]*X[1] );
|
|
t = atan2( X[2]*a , p*b );
|
|
|
|
phi = atan2( X[2] + ee2 * b * sin(t)*sin(t)*sin(t) ,
|
|
p - e2 * a * cos(t)*cos(t)*cos(t) );
|
|
|
|
R = a / sqrt( 1 - e2*sin(phi)*sin(phi) );
|
|
*alt = p / cos(phi) - R;
|
|
|
|
*lat = phi*180/M_PI;
|
|
*lon = lam*180/M_PI;
|
|
}
|
|
|
|
int get_GPSkoord() {
|
|
int i, k;
|
|
unsigned byte;
|
|
ui8_t XYZ_bytes[4];
|
|
int XYZ; // 32bit
|
|
double X[3], lat, lon, alt;
|
|
ui8_t gpsVel_bytes[2];
|
|
short vel16; // 16bit
|
|
double V[3], phi, lam, alpha, dir;
|
|
int shift = 0;
|
|
|
|
int crclen;
|
|
int crcdat;
|
|
int crcpos = pos_GPS3;
|
|
|
|
if ( option_crc ) {
|
|
// xorbyte(crcpos) == (pck_GPS3>>8) & 0xFF ?
|
|
crclen = xorbyte(crcpos+1);
|
|
crcdat = xorbyte(crcpos+2+crclen) | (xorbyte(crcpos+2+crclen+1)<<8);
|
|
if ( crcdat != crc16x(crcpos+2, crclen) ) {
|
|
return -2; // CRC error
|
|
}
|
|
}
|
|
|
|
|
|
byte = (frame[pos_GPS3]<<8) + frame[pos_GPS3+1];
|
|
/* fprintf(stdout, "0x%04X ", byte ); // ^ 0xC2EA == 0x7B15 ? */
|
|
if (byte != xor_GPS3) {
|
|
byte = (shiftLeft(pos_GPS3)<<8) + shiftLeft(pos_GPS3+1);
|
|
if (byte == xor_GPS3) shift = 1;
|
|
else {
|
|
byte = (shiftRight(pos_GPS3)<<8) + shiftRight(pos_GPS3+1);
|
|
if (byte == xor_GPS3) shift = -1;
|
|
}
|
|
if (!shift) return 0x100;
|
|
//printf("shift:%2d ", shift);
|
|
}
|
|
|
|
for (k = 0; k < 3; k++) {
|
|
|
|
for (i = 0; i < 4; i++) {
|
|
if (shift > 0) byte = shiftLeft(pos_GPSecefX + 4*k + i);
|
|
else if (shift < 0) byte = shiftRight(pos_GPSecefX + 4*k + i);
|
|
else byte = frame[pos_GPSecefX + 4*k + i];
|
|
byte = byte ^ mask[(pos_GPSecefX + 4*k + i) % MASK_LEN];
|
|
XYZ_bytes[i] = byte;
|
|
}
|
|
memcpy(&XYZ, XYZ_bytes, 4);
|
|
X[k] = XYZ / 100.0;
|
|
|
|
for (i = 0; i < 2; i++) {
|
|
if (shift > 0) byte = shiftLeft(pos_GPSecefV + 2*k + i);
|
|
else if (shift < 0) byte = shiftRight(pos_GPSecefV + 2*k + i);
|
|
else byte = frame[pos_GPSecefV + 2*k + i];
|
|
byte = byte ^ mask[(pos_GPSecefV + 2*k + i) % MASK_LEN];
|
|
gpsVel_bytes[i] = byte;
|
|
}
|
|
vel16 = gpsVel_bytes[0] | gpsVel_bytes[1] << 8;
|
|
V[k] = vel16 / 100.0;
|
|
|
|
}
|
|
|
|
|
|
// ECEF-Position
|
|
ecef2elli(X, &lat, &lon, &alt);
|
|
gpx.lat = lat;
|
|
gpx.lon = lon;
|
|
gpx.alt = alt;
|
|
if ((alt < -1000) || (alt > 80000)) return -1;
|
|
|
|
|
|
// ECEF-Velocities
|
|
// ECEF-Vel -> NorthEastUp
|
|
phi = lat*M_PI/180.0;
|
|
lam = lon*M_PI/180.0;
|
|
gpx.vN = -V[0]*sin(phi)*cos(lam) - V[1]*sin(phi)*sin(lam) + V[2]*cos(phi);
|
|
gpx.vE = -V[0]*sin(lam) + V[1]*cos(lam);
|
|
gpx.vU = V[0]*cos(phi)*cos(lam) + V[1]*cos(phi)*sin(lam) + V[2]*sin(phi);
|
|
|
|
// NEU -> HorDirVer
|
|
gpx.vH = sqrt(gpx.vN*gpx.vN+gpx.vE*gpx.vE);
|
|
///*
|
|
alpha = atan2(gpx.vN, gpx.vE)*180/M_PI; // ComplexPlane (von x-Achse nach links) - GeoMeteo (von y-Achse nach rechts)
|
|
dir = 90-alpha; // z=x+iy= -> i*conj(z)=y+ix=re(i(pi/2-t)), Achsen und Drehsinn vertauscht
|
|
if (dir < 0) dir += 360; // atan2(y,x)=atan(y/x)=pi/2-atan(x/y) , atan(1/t) = pi/2 - atan(t)
|
|
gpx.vD2 = dir;
|
|
//*/
|
|
dir = atan2(gpx.vE, gpx.vN) * 180 / M_PI;
|
|
if (dir < 0) dir += 360;
|
|
gpx.vD = dir;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int get_Aux() {
|
|
//
|
|
// "Ozone Sounding with Vaisala Radiosonde RS41" user's guide
|
|
//
|
|
int i, auxlen, auxcrc, count7E, pos7E;
|
|
|
|
count7E = 0;
|
|
pos7E = pos_AUX;
|
|
|
|
// 7Exx: xdata
|
|
while ( pos7E < FRAME_LEN && xorbyte(pos7E) == 0x7E ) {
|
|
|
|
auxlen = xorbyte(pos7E+1);
|
|
auxcrc = xorbyte(pos7E+2+auxlen) | (xorbyte(pos7E+2+auxlen+1)<<8);
|
|
|
|
if (count7E == 0) fprintf(stdout, "\n # xdata = ");
|
|
else fprintf(stdout, " # ");
|
|
|
|
if ( auxcrc == crc16x(pos7E+2, auxlen) ) {
|
|
//fprintf(stdout, " # %02x : ", xorbyte(pos7E+2));
|
|
for (i = 1; i < auxlen; i++) {
|
|
fprintf(stdout, "%c", xorbyte(pos7E+2+i));
|
|
}
|
|
count7E++;
|
|
pos7E += 2+auxlen+2;
|
|
}
|
|
else pos7E = FRAME_LEN;
|
|
}
|
|
|
|
return count7E;
|
|
}
|
|
|
|
int get_Cal() {
|
|
int i;
|
|
unsigned byte;
|
|
ui8_t calfr = 0;
|
|
ui8_t burst = 0;
|
|
int freq = 0, f0 = 0, f1 = 0;
|
|
char sondetyp[9];
|
|
|
|
byte = xorbyte(pos_CalData);
|
|
calfr = byte;
|
|
|
|
if (option_verbose == 3) {
|
|
fprintf(stdout, "\n"); // fflush(stdout);
|
|
fprintf(stdout, "[%5d] ", gpx.frnr);
|
|
fprintf(stdout, " 0x%02x: ", calfr);
|
|
for (i = 0; i < 16; i++) {
|
|
byte = xorbyte(pos_CalData+1+i);
|
|
fprintf(stdout, "%02x ", byte);
|
|
}
|
|
}
|
|
|
|
if (calfr == 0x02 && option_verbose /*== 2*/) {
|
|
byte = xorbyte(pos_Calburst);
|
|
burst = byte;
|
|
fprintf(stdout, ": BK %02X ", burst);
|
|
}
|
|
|
|
if (calfr == 0x00 && option_verbose) {
|
|
byte = xorbyte(pos_Calfreq) & 0xC0; // erstmal nur oberste beiden bits
|
|
f0 = (byte * 10) / 64; // 0x80 -> 1/2, 0x40 -> 1/4 ; dann mal 40
|
|
byte = xorbyte(pos_Calfreq+1);
|
|
f1 = 40 * byte;
|
|
freq = 400000 + f1+f0; // kHz;
|
|
fprintf(stdout, ": fq %d ", freq);
|
|
}
|
|
|
|
if (calfr == 0x21 && option_verbose /*== 2*/) { // eventuell noch zwei bytes in 0x22
|
|
for (i = 0; i < 9; i++) sondetyp[i] = 0;
|
|
for (i = 0; i < 8; i++) {
|
|
byte = xorbyte(pos_CalRSTyp + i);
|
|
if ((byte >= 0x20) && (byte < 0x7F)) sondetyp[i] = byte;
|
|
else if (byte == 0x00) sondetyp[i] = '\0';
|
|
}
|
|
fprintf(stdout, ": %s ", sondetyp);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* ------------------------------------------------------------------------------------ */
|
|
|
|
int print_position() {
|
|
int err;
|
|
|
|
err = 0;
|
|
err |= get_FrameNb();
|
|
err |= get_SondeID();
|
|
err |= get_GPSweek();
|
|
err |= get_GPStime();
|
|
err |= get_GPSkoord();
|
|
|
|
if (!err) {
|
|
Gps2Date(gpx.week, gpx.gpssec, &gpx.jahr, &gpx.monat, &gpx.tag);
|
|
fprintf(stdout, "[%5d] ", gpx.frnr);
|
|
fprintf(stdout, "(%s) ", gpx.id);
|
|
fprintf(stdout, "%s ", weekday[gpx.wday]);
|
|
fprintf(stdout, "%04d-%02d-%02d %02d:%02d:%06.3f",
|
|
gpx.jahr, gpx.monat, gpx.tag, gpx.std, gpx.min, gpx.sek);
|
|
if (option_verbose == 3) fprintf(stdout, " (W %d)", gpx.week);
|
|
fprintf(stdout, " ");
|
|
fprintf(stdout, " lat: %.5f ", gpx.lat);
|
|
fprintf(stdout, " lon: %.5f ", gpx.lon);
|
|
fprintf(stdout, " alt: %.2f ", gpx.alt);
|
|
//if (option_verbose)
|
|
{
|
|
//fprintf(stdout, " (%.1f %.1f %.1f) ", gpx.vN, gpx.vE, gpx.vU);
|
|
fprintf(stdout," vH: %4.1f D: %5.1f° vV: %3.1f ", gpx.vH, gpx.vD, gpx.vU);
|
|
}
|
|
get_Cal();
|
|
if (option_verbose > 1) get_Aux();
|
|
fprintf(stdout, "\n"); // fflush(stdout);
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
void print_frame(int len) {
|
|
int i;
|
|
ui8_t byte;
|
|
|
|
if (option_raw) {
|
|
for (i = 0; i < len; i++) {
|
|
//byte = frame[i];
|
|
byte = xorbyte(i);
|
|
fprintf(stdout, "%02x", byte);
|
|
}
|
|
fprintf(stdout, "\n");
|
|
}
|
|
else print_position();
|
|
}
|
|
|
|
int main(int argc, char *argv[]) {
|
|
|
|
FILE *fp;
|
|
char *fpname;
|
|
char bitbuf[8];
|
|
int bit_count = 0,
|
|
byte_count = FRAMESTART,
|
|
header_found = 0,
|
|
byte, i;
|
|
int bit, len;
|
|
|
|
#ifdef CYGWIN
|
|
_setmode(fileno(stdin), _O_BINARY); // _fileno(stdin)
|
|
#endif
|
|
setbuf(stdout, NULL);
|
|
|
|
fpname = argv[0];
|
|
++argv;
|
|
while ((*argv) && (!wavloaded)) {
|
|
if ( (strcmp(*argv, "-h") == 0) || (strcmp(*argv, "--help") == 0) ) {
|
|
fprintf(stderr, "%s [options] audio.wav\n", fpname);
|
|
fprintf(stderr, " options:\n");
|
|
fprintf(stderr, " -v, -vx, -vv (info, aux, info/conf)\n");
|
|
fprintf(stderr, " -r, --raw\n");
|
|
fprintf(stderr, " -i, --invert\n");
|
|
fprintf(stderr, " --crc (check CRC)\n");
|
|
fprintf(stderr, " --avg (moving average)\n");
|
|
fprintf(stderr, " -b (alt. Demod.)\n");
|
|
return 0;
|
|
}
|
|
else if ( (strcmp(*argv, "-v") == 0) || (strcmp(*argv, "--verbose") == 0) ) {
|
|
option_verbose = 1;
|
|
}
|
|
else if (strcmp(*argv, "-vx") == 0) { option_verbose = 2; }
|
|
else if (strcmp(*argv, "-vv") == 0) { option_verbose = 3; }
|
|
else if (strcmp(*argv, "--crc") == 0) { option_crc = 1; }
|
|
else if (strcmp(*argv, "--res") == 0) { option_res = 1; }
|
|
else if ( (strcmp(*argv, "-r") == 0) || (strcmp(*argv, "--raw") == 0) ) {
|
|
option_raw = 1;
|
|
}
|
|
else if ( (strcmp(*argv, "-i") == 0) || (strcmp(*argv, "--invert") == 0) ) {
|
|
option_inv = 1;
|
|
}
|
|
else if ( (strcmp(*argv, "--avg") == 0) ) {
|
|
option_avg = 1;
|
|
}
|
|
else if (strcmp(*argv, "-b") == 0) { option_b = 1; }
|
|
else {
|
|
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;
|
|
}
|
|
|
|
|
|
while (!read_bits_fsk(fp, &bit, &len)) {
|
|
|
|
if (len == 0) { // reset_frame();
|
|
if (byte_count > pos_AUX) {
|
|
for (i = byte_count; i < FRAME_LEN; i++) frame[i] = 0;
|
|
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) {
|
|
if (compare() >= HEADLEN) header_found = 1;
|
|
}
|
|
else {
|
|
bitbuf[bit_count] = bit;
|
|
bit_count++;
|
|
|
|
if (bit_count == 8) {
|
|
bit_count = 0;
|
|
byte = bits2byte(bitbuf);
|
|
frame[byte_count] = byte;
|
|
byte_count++;
|
|
if (byte_count == FRAME_LEN) {
|
|
byte_count = FRAMESTART;
|
|
header_found = 0;
|
|
print_frame(FRAME_LEN);
|
|
}
|
|
}
|
|
}
|
|
|
|
}
|
|
if (header_found && option_b) {
|
|
bitstart = 1;
|
|
|
|
while ( byte_count < FRAME_LEN ) {
|
|
if (read_rawbit(fp, &bit) == EOF) break;
|
|
bitbuf[bit_count] = bit;
|
|
bit_count++;
|
|
if (bit_count == 8) {
|
|
bit_count = 0;
|
|
byte = bits2byte(bitbuf);
|
|
frame[byte_count] = byte;
|
|
byte_count++;
|
|
}
|
|
}
|
|
byte_count = FRAMESTART;
|
|
header_found = 0;
|
|
print_frame(FRAME_LEN);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
fclose(fp);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|