kopia lustrzana https://github.com/rs1729/RS
combined CF06/HT03, cf. uaii2022
Zilog80
rodzic
76baa5853a
commit
6036bfdc53
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@ -0,0 +1,745 @@
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/*
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UAII2022 Lindenberg
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Aerospace Newsky CF-06AH
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Huayuntianyi HT03G-1U
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <math.h>
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// optional JSON "version"
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// (a) set global
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// gcc -DVERSION_JSN [-I<inc_dir>] ...
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#ifdef VERSION_JSN
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#include "version_jsn.h"
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#endif
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// or
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// (b) set local compiler option, e.g.
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// gcc -DVER_JSN_STR=\"0.0.2\" ...
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typedef unsigned char ui8_t;
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typedef short i16_t;
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typedef unsigned int ui32_t;
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static int option_verbose = 0,
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option_raw = 0,
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option_inv = 0,
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option_b = 0,
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option_timestamp = 0,
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option_json = 0,
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wavloaded = 0;
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static int wav_channel = 0; // audio channel: left
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#define BAUD_RATE 2400
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#define FRAMELEN 109 //128
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#define BITFRAMELEN (8*FRAMELEN)
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#define HEADLEN 64
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#define HEADOFS 0
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static char header[] = "01010101""01010101""01010101""01010101""01010101" // preamble AA AA AA
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"10110100""00101011""11000110"; // 2D D4 63
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static char buf[HEADLEN+1] = "xxxxxxxxxx\0";
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static int bufpos = 0;
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static char frame_bits[BITFRAMELEN+1];
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static ui8_t frame_bytes[FRAMELEN+1];
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typedef struct {
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int frnr;
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ui32_t sn;
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char id[8+4];
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//int week;
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int gpstow; // tow/ms
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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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float lat; float lon; float alt;
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float vH; float vD; float vV;
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//float vE; float vN; float vU;
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//char frame_bits[BITFRAME_LEN+1];
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//ui8_t frame_bytes[FRAME_LEN+1];
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//int freq;
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int jsn_freq; // freq/kHz (SDR)
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//option_t option;
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} gpx_t;
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static gpx_t gpx; // = {0}
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static int sample_rate = 0, bits_sample = 0, channels = 0;
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static float samples_per_bit = 0;
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static 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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static 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) && strncmp(txt, "RF64", 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 (sample_rate == 900001) sample_rate -= 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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if (bits_sample != 8 && bits_sample != 16 && bits_sample != 32) return -1;
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return 0;
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}
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static unsigned long sample_count = 0;
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static double bitgrenze = 0;
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static int f32read_sample(FILE *fp, float *s) {
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int i;
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unsigned int word = 0;
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short *b = (short*)&word;
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float *f = (float*)&word;
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for (i = 0; i < channels; i++) {
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if (fread( &word, bits_sample/8, 1, fp) != 1) return EOF;
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if (i == wav_channel) { // i = 0: links bzw. mono
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//if (bits_sample == 8) sint = b-128; // 8bit: 00..FF, centerpoint 0x80=128
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//if (bits_sample == 16) sint = (short)b;
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if (bits_sample == 32) {
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*s = *f;
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}
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else {
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if (bits_sample == 8) { *b -= 128; }
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*s = *b/128.0;
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if (bits_sample == 16) { *s /= 256.0; }
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}
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}
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}
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sample_count++;
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return 0;
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}
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static int par=1, par_alt=1;
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static int read_bits_fsk(FILE *fp, int *bit, int *len) {
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static float sample;
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int n;
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float l;
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n = 0;
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do {
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if ( f32read_sample(fp, &sample) == EOF ) return EOF;
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par_alt = par;
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par = (sample >= 0.0f) ? 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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l = (float)n / samples_per_bit;
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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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// *bit = (1+inv*par_alt)/2; // ausser inv=0
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/* Y-offset ? */
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return 0;
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}
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static int bitstart = 0;
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static unsigned long scount = 0;
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static int read_rawbit(FILE *fp, int *bit) {
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float sample;
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float sum;
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sum = 0.0f;
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if (bitstart) {
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scount = 0; // eigentlich scount = 1
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bitgrenze = 0; // oder bitgrenze = -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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if ( f32read_sample(fp, &sample) == EOF ) return EOF;
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//sample_count++; // in f32read_sample()
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//par = (sample >= 0.0f) ? 1 : -1; // 8bit: 0..127,128..255 (-128..-1,0..127)
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sum += sample;
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scount++;
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} while (scount < bitgrenze); // n < samples_per_bit
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if (sum >= 0.0f) *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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static int compare() {
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int i=0;
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while ((i < HEADLEN) && (buf[(bufpos+i) % HEADLEN] == header[HEADLEN+HEADOFS-1-i])) {
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i++;
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}
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return i;
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}
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static char inv(char c) {
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if (c == '0') return '1';
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if (c == '1') return '0';
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return c;
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}
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static int compare2() {
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int i=0;
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while ((i < HEADLEN) && (buf[(bufpos+i) % HEADLEN] == inv(header[HEADLEN+HEADOFS-1-i]))) {
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i++;
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}
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return i;
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}
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static ui32_t crc16(ui8_t bytes[], int len) { // CF06AH
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ui32_t crc16poly = 0x1021;
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ui32_t rem = 0; // init value
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int i, j;
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for (i = 0; i < len; i++) {
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rem = rem ^ (bytes[i] << 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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static char weekday[7][4] = { "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};
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#define OFS 5 // preamble
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static int print_cf06() {
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int j;
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int crcdat1, crcval1, crc_ok1,
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crcdat2, crcval2, crc_ok2;
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// CRC_1
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crcdat1 = (frame_bytes[OFS+47]<<8) | frame_bytes[OFS+47+1];
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crcval1 = crc16(frame_bytes+OFS+7, 40);
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crc_ok1 = (crcdat1 == crcval1);
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// CRC_2
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crcdat2 = (frame_bytes[OFS+94]<<8) | frame_bytes[OFS+94+1];
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crcval2 = crc16(frame_bytes+OFS+65, 29) ^ 0x39BB; // crc16(0xA9BD)=0x39BB;
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crc_ok2 = (crcdat2 == crcval2);
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if (option_raw) {
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if (option_raw == 1) {
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for (j = 0; j < FRAMELEN; j++) {
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printf("%02X ", frame_bytes[j]);
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}
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printf(" # [%s,%s]", crc_ok1 ? "OK1" : "NO1", crc_ok2 ? "OK2" : "NO2");
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}
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else {
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for (j = 0; j < BITFRAMELEN; j++) {
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printf("%c", frame_bits[j]);
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if (j % 8 == 7) printf(" ");
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}
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}
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printf("\n");
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}
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else {
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ui32_t val;
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int ival;
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ui32_t gpstime;
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ui32_t std, min, ms;
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int wday;
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float sek = 0.0f;
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ui32_t sn = 0;
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for (j = 0; j < 4; j++) {
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sn *= 100;
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sn += frame_bytes[OFS+7+j] % 100;
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}
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printf(" (%08d) ", sn);
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gpx.sn = sn;
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sprintf(gpx.id, "%08d", sn);
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gpstime = 0;
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for (j = 0; j < 4; j++) gpstime |= frame_bytes[OFS+11+j] << (8*j);
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gpx.gpstow = gpstime;
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gpx.frnr = gpx.gpstow/1000; // JSON: 7-day wrap-around
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ms = gpstime % 1000;
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gpstime /= 1000;
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wday = (gpstime / (24 * 3600)) % 7;
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if ((wday < 0) || (wday > 6)) wday = 0;
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gpx.wday = wday;
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gpstime %= (24*3600);
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std = gpstime / 3600;
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min = (gpstime % 3600) / 60;
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sek = gpstime % 60 + ms/1000.0;
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gpx.std = std;
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gpx.min = min;
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gpx.sek = sek;
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printf("%s ", weekday[wday]);
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printf("%02d:%02d:%06.3f ", std, min, sek);
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printf(" ");
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val = 0;
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for (j = 0; j < 4; j++) val |= frame_bytes[OFS+15+j] << (8*j);
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ival = (int)val;
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float lon = ival / 1e7;
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printf(" lon: %.4f ", lon);
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gpx.lon = lon;
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val = 0;
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for (j = 0; j < 4; j++) val |= frame_bytes[OFS+19+j] << (8*j);
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ival = (int)val;
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float lat = ival / 1e7;
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printf(" lat: %.4f ", lat);
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gpx.lat = lat;
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val = 0;
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for (j = 0; j < 4; j++) val |= frame_bytes[OFS+23+j] << (8*j);
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ival = (int)val;
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float alt = ival / 1e3;
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printf(" alt: %.1f ", alt); // MSL
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gpx.alt = alt;
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i16_t val16;
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val16 = 0;
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for (j = 0; j < 2; j++) val16 |= frame_bytes[OFS+27+j] << (8*j);
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float vE = val16/100.0f;
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val16 = 0;
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for (j = 0; j < 2; j++) val16 |= frame_bytes[OFS+29+j] << (8*j);
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float vN = val16/100.0f;
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val16 = 0;
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for (j = 0; j < 2; j++) val16 |= frame_bytes[OFS+31+j] << (8*j);
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float vU = -val16/100.0f;
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//printf(" (%.2f,%.2f,%.2f) ", vE, vN, vU);
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float vH = sqrt(vN*vN+vE*vE);
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float vD = atan2(vE, vN) * 180.0 / M_PI;
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if (vD < 0) vD += 360;
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printf(" vH: %4.1f D: %5.1f vV: %3.1f ", vH, vD, vU);
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gpx.vH = vH;
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gpx.vD = vD;
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gpx.vV = vU;
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printf(" ");
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// 8-bit counter
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val = frame_bytes[OFS+45];
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printf("[%3d] ", val);
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printf(" ");
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// CRC_1
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printf(" %s", crc_ok1 ? "[OK1]" : "[NO1]");
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if (option_verbose) printf(" # [%04X:%04X]", crcdat1, crcval1);
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// CRC_2
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if (option_verbose) {
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printf(" ");
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printf(" %s", crc_ok2 ? "[OK2]" : "[NO2]");
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if (option_verbose) printf(" # [%04X:%04X]", crcdat2, crcval2);
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}
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printf("\n");
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}
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return crc_ok1; // crc_ok1 && crc_ok2
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}
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static ui32_t crc16rev(ui8_t bytes[], int len) { // HT03G
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ui32_t crc16poly = 0x8408; //rev(0x1021)
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ui32_t rem = 0; // init value
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int i, j;
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for (i = 0; i < len; i++) {
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rem = rem ^ bytes[i];
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for (j = 0; j < 8; j++) {
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if (rem & 0x0001) {
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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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static int print_ht03() {
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int j;
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int crcdat, crcval, crc_ok;
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// CRC
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crcdat = frame_bytes[OFS+100] | (frame_bytes[OFS+100+1]<<8);
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crcval = crc16rev(frame_bytes+OFS+3, 97);
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crc_ok = (crcdat == crcval);
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if (option_raw) {
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if (option_raw == 1) {
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for (j = 0; j < FRAMELEN; j++) {
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printf("%02X ", frame_bytes[j]);
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}
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printf(" # %s", crc_ok ? "[OK]" : "[NO]");
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}
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else {
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for (j = 0; j < BITFRAMELEN; j++) {
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printf("%c", frame_bits[j]);
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if (j % 8 == 7) printf(" ");
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}
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}
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printf("\n");
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}
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else {
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// SN/ID? DBG
|
||||
////for (j=0;j<4;j++) printf("%02X", frame_bytes[OFS+7+j]); printf(" ");
|
||||
ui32_t sn = 0;
|
||||
for (j = 0; j < 4; j++) sn |= frame_bytes[OFS+7+j] << (8*(3-j));
|
||||
printf(" (%08X) ", sn);
|
||||
gpx.sn = sn;
|
||||
sprintf(gpx.id, "%08X", sn);
|
||||
|
||||
printf(" ");
|
||||
|
||||
ui32_t std, min;
|
||||
float sek = 0.0f;
|
||||
std = frame_bytes[OFS+12] & 0x1F;
|
||||
min = frame_bytes[OFS+13] & 0x3F;
|
||||
sek = (frame_bytes[OFS+14] | (frame_bytes[OFS+13] & 0xC0) << 2) / 10.0f;
|
||||
printf("%02d:%02d:%04.1f ", std, min, sek); // UTC
|
||||
printf(" ");
|
||||
gpx.std = std;
|
||||
gpx.min = min;
|
||||
gpx.sek = sek;
|
||||
|
||||
int val; // GPS: little endian
|
||||
|
||||
val = 0;
|
||||
for (j = 0; j < 4; j++) val |= frame_bytes[OFS+16+j] << (8*j);
|
||||
float *fval = (float*)(frame_bytes+OFS+16);
|
||||
float lon = *fval * 180.0 / M_PI;
|
||||
printf(" lon: %.4f ", lon);
|
||||
gpx.lon = lon;
|
||||
|
||||
val = 0;
|
||||
for (j = 0; j < 4; j++) val |= frame_bytes[OFS+20+j] << (8*j);
|
||||
fval = (float*)(frame_bytes+OFS+20);
|
||||
float lat = *fval * 180.0 / M_PI;
|
||||
printf(" lat: %.4f ", lat);
|
||||
gpx.lat = lat;
|
||||
|
||||
val = 0; // signed int32 or int24
|
||||
for (j = 0; j < 4; j++) val |= frame_bytes[OFS+24+j] << (8*j);
|
||||
float alt = val/10.0f;
|
||||
printf(" alt: %.1f ", alt); // MSL
|
||||
gpx.alt = alt;
|
||||
|
||||
i16_t val16;
|
||||
val16 = 0;
|
||||
for (j = 0; j < 2; j++) val16 |= frame_bytes[OFS+28+j] << (8*j);
|
||||
float vN = val16/100.0f;
|
||||
val16 = 0;
|
||||
for (j = 0; j < 2; j++) val16 |= frame_bytes[OFS+30+j] << (8*j);
|
||||
float vE = val16/100.0f;
|
||||
val16 = 0;
|
||||
for (j = 0; j < 2; j++) val16 |= frame_bytes[OFS+32+j] << (8*j);
|
||||
float vU = val16/100.0f;
|
||||
//printf(" (%.2f,%.2f,%.2f) ", vN, vE, vU);
|
||||
float vH = sqrt(vN*vN+vE*vE);
|
||||
float vD = atan2(vE, vN) * 180.0 / M_PI;
|
||||
if (vD < 0) vD += 360;
|
||||
printf(" vH: %4.1f D: %5.1f vV: %3.1f ", vH, vD, vU);
|
||||
gpx.vH = vH;
|
||||
gpx.vD = vD;
|
||||
gpx.vV = vU;
|
||||
|
||||
|
||||
printf(" ");
|
||||
|
||||
// counter ? big endian
|
||||
int cnt = 0;
|
||||
for (j = 0; j < 2; j++) cnt |= frame_bytes[OFS+97+j] << (8*(1-j));
|
||||
printf(" [%5d] ", cnt);
|
||||
gpx.frnr = cnt;
|
||||
|
||||
printf(" ");
|
||||
|
||||
// CRC
|
||||
printf(" %s", crc_ok ? "[OK]" : "[NO]");
|
||||
if (option_verbose) printf(" # [%04X:%04X]", crcdat, crcval);
|
||||
|
||||
printf("\n");
|
||||
}
|
||||
|
||||
return crc_ok;
|
||||
}
|
||||
|
||||
#define CF06 6
|
||||
#define HT03 3
|
||||
|
||||
static int print_frame() {
|
||||
int frm_ok = 0;
|
||||
int rs_typ = 0;
|
||||
int i, j;
|
||||
char *rs_str = "";
|
||||
|
||||
for (j = 0; j < FRAMELEN; j++) {
|
||||
ui8_t byteval = 0;
|
||||
ui8_t d = 1;
|
||||
for (i = 0; i < 8; i++) { /* little endian / LSB */
|
||||
if (frame_bits[8*j+i] & 1) byteval += d;
|
||||
d <<= 1;
|
||||
}
|
||||
frame_bytes[j] = byteval;
|
||||
}
|
||||
|
||||
|
||||
if (frame_bytes[OFS+5] == 0xAA && frame_bytes[OFS+6] == 0xAA) rs_typ = CF06; // (2D D4 63 7F FF) AA AA
|
||||
else
|
||||
if (frame_bytes[OFS+5] == 0xFF && frame_bytes[OFS+6] == 0xFF) rs_typ = HT03; // (2D D4 63 7F FF) FF EE
|
||||
else rs_typ = HT03;
|
||||
|
||||
switch (rs_typ)
|
||||
{
|
||||
case CF06: frm_ok = print_cf06();
|
||||
rs_str = "CF06"; // CF-06-AH
|
||||
break;
|
||||
case HT03: frm_ok = print_ht03();
|
||||
rs_str = "HT03"; // HT03G-1U
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
||||
if (option_json && frm_ok && !option_raw) {
|
||||
char *ver_jsn = NULL;
|
||||
printf("{ \"type\": \"%s\"", rs_str);
|
||||
printf(", \"frame\": %d, \"id\": \"%.4s-%.8s\", \"datetime\": \"%02d:%02d:%06.3fZ\", \"lat\": %.5f, \"lon\": %.5f, \"alt\": %.5f, \"vel_h\": %.5f, \"heading\": %.5f, \"vel_v\": %.5f",
|
||||
gpx.frnr, rs_str, gpx.id, gpx.std, gpx.min, gpx.sek, gpx.lat, gpx.lon, gpx.alt, gpx.vH, gpx.vD, gpx.vV );
|
||||
//printf(", \"subtype\": \"%s\"", rs_typ_str);
|
||||
if (gpx.jsn_freq > 0) {
|
||||
printf(", \"freq\": %d", gpx.jsn_freq);
|
||||
}
|
||||
|
||||
// Reference time/position
|
||||
printf(", \"ref_datetime\": \"%s\"", (rs_typ == CF06) ? "GPS" : "UTC" ); // {"GPS", "UTC"} GPS-UTC=leap_sec
|
||||
printf(", \"ref_position\": \"%s\"", "MSL" ); // {"GPS", "MSL"} GPS=ellipsoid , MSL=geoid
|
||||
|
||||
#ifdef VER_JSN_STR
|
||||
ver_jsn = VER_JSN_STR;
|
||||
#endif
|
||||
if (ver_jsn && *ver_jsn != '\0') printf(", \"version\": \"%s\"", ver_jsn);
|
||||
printf(" }\n");
|
||||
printf("\n");
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int main(int argc, char **argv) {
|
||||
|
||||
FILE *fp;
|
||||
char *fpname;
|
||||
|
||||
int j, h, bit, len;
|
||||
int bit_count, frames;
|
||||
int header_found = 0;
|
||||
|
||||
int cfreq = -1;
|
||||
|
||||
|
||||
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\n");
|
||||
fprintf(stderr, " -r\n");
|
||||
fprintf(stderr, " -i\n");
|
||||
fprintf(stderr, " -b\n");
|
||||
return 0;
|
||||
}
|
||||
else if ( (strcmp(*argv, "-i") == 0) || (strcmp(*argv, "--invert") == 0) ) {
|
||||
option_inv = 1;
|
||||
}
|
||||
else if ( (strcmp(*argv, "-v") == 0) || (strcmp(*argv, "--verbose") == 0) ) {
|
||||
option_verbose = 1;
|
||||
}
|
||||
else if (strcmp(*argv, "-b" ) == 0) { option_b = 1; }
|
||||
else if (strcmp(*argv, "-t" ) == 0) { option_timestamp = 1; }
|
||||
else if ( (strcmp(*argv, "-r") == 0) || (strcmp(*argv, "--raw") == 0) ) {
|
||||
option_raw = 1;
|
||||
}
|
||||
else if ( (strcmp(*argv, "-R") == 0) || (strcmp(*argv, "--RAW") == 0) ) {
|
||||
option_raw = 2;
|
||||
}
|
||||
else if (strcmp(*argv, "--json") == 0) {
|
||||
option_json = 1;
|
||||
}
|
||||
else if ( (strcmp(*argv, "--jsn_cfq") == 0) ) {
|
||||
int frq = -1; // center frequency / Hz
|
||||
++argv;
|
||||
if (*argv) frq = atoi(*argv); else return -1;
|
||||
if (frq < 300000000) frq = -1;
|
||||
cfreq = frq;
|
||||
}
|
||||
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;
|
||||
|
||||
|
||||
j = read_wav_header(fp);
|
||||
if (j) return -1;
|
||||
|
||||
if (cfreq > 0) gpx.jsn_freq = (cfreq+500)/1000;
|
||||
|
||||
|
||||
bit_count = 0;
|
||||
frames = 0;
|
||||
while (!read_bits_fsk(fp, &bit, &len)) {
|
||||
|
||||
if (len == 0) {
|
||||
bufpos--;
|
||||
if (bufpos < 0) bufpos = HEADLEN-1;
|
||||
buf[bufpos] = 'x';
|
||||
continue;
|
||||
}
|
||||
|
||||
|
||||
for (j = 0; j < len; j++) {
|
||||
bufpos--;
|
||||
if (bufpos < 0) bufpos = HEADLEN-1;
|
||||
buf[bufpos] = 0x30 + bit;
|
||||
|
||||
if (!header_found)
|
||||
{
|
||||
h = compare(); //h2 = compare2();
|
||||
if ((h >= HEADLEN)) {
|
||||
header_found = 1;
|
||||
fflush(stdout);
|
||||
if (option_timestamp) printf("<%8.3f> ", sample_count/(double)sample_rate);
|
||||
strncpy(frame_bits, header, HEADLEN);
|
||||
bit_count += HEADLEN;
|
||||
frames++;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
frame_bits[bit_count] = 0x30 + bit;
|
||||
bit_count += 1;
|
||||
}
|
||||
|
||||
if (bit_count >= BITFRAMELEN) {
|
||||
bit_count = 0;
|
||||
header_found = 0;
|
||||
|
||||
print_frame();
|
||||
}
|
||||
|
||||
}
|
||||
if (header_found && option_b) {
|
||||
bitstart = 1;
|
||||
|
||||
while ( bit_count < BITFRAMELEN ) {
|
||||
if (read_rawbit(fp, &bit) == EOF) break;
|
||||
frame_bits[bit_count] = 0x30 + bit;
|
||||
bit_count += 1;
|
||||
}
|
||||
|
||||
bit_count = 0;
|
||||
header_found = 0;
|
||||
|
||||
print_frame();
|
||||
}
|
||||
}
|
||||
printf("\n");
|
||||
|
||||
fclose(fp);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
Ładowanie…
Reference in New Issue