kopia lustrzana https://github.com/rs1729/RS
1170 wiersze
35 KiB
C
1170 wiersze
35 KiB
C
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/*
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* (unknown (26702) 2021-02-19)
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* radiosonde "MP3-H1" (WMO translit: "MRZ-N1")
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* author: zilog80
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*
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* compile:
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* gcc -c demod_mod.c
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* gcc mp3h1mod.c demod_mod.o -lm -o mp3h1mod
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* usage:
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* ./mp3h1mod -v fm_audio.wav
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* (inverse polarity: -i)
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*
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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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#include <stdlib.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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// 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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#define TIMEOUT_JSN 60
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//typedef unsigned char ui8_t;
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//typedef unsigned int ui32_t;
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//typedef unsigned short ui16_t;
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//typedef short i16_t;
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//typedef int i32_t;
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#include "demod_mod.h"
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typedef struct {
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i8_t vbs; // verbose output
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i8_t raw; // raw frames
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i8_t crc;
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i8_t ecc; // Hamming ECC
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i8_t sat; // GPS sat data
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i8_t ptu; // PTU: temperature humidity (pressure)
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i8_t inv;
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i8_t aut;
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i8_t col; // colors
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i8_t jsn; // JSON output (auto_rx)
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i8_t slt; // silent
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i8_t dbg;
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i8_t unq;
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} option_t;
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#define BITFRAME_LEN ((51*16)/2) // ofs=8: 52..53: AA AA (1..5) or 00 00 (6)
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#define RAWBITFRAME_LEN (BITFRAME_LEN*2)
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#define FRAMESTART (HEADOFS+HEADLEN)
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#define FRAME_LEN (BITFRAME_LEN/8)
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typedef struct {
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ui8_t subcnt1;
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ui8_t subcnt2;
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//int frnr;
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int yr; int mth; int day;
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int hrs; int min; int sec;
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double lat; double lon; double alt;
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double vH; double vD; double vV;
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ui8_t numSats;
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float calA; // A(ntc)
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float calB; // B(ntc)
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float calC; // C(ntc)
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float A_adcT; float B_adcT; float C_adcT;
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float A_adcH; float B_adcH; float C_adcH;
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ui8_t frame[FRAME_LEN+16];
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char frame_bits[BITFRAME_LEN+16];
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ui32_t cfg[16];
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ui32_t snC;
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ui32_t snD;
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float T; float RH;
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ui8_t cfg_ntc; ui8_t cfg_T; ui8_t cfg_H;
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ui8_t crcOK;
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//
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int sec_day;
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int sec_day_prev;
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int gps_cnt;
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int gps_cnt_prev;
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int week;
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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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#define HEADLEN 44
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#define HEADOFS 0
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static int bits_ofs = 8;
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//Preamble+Header
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static char mrz_header[] = "100110011001100110011001100110011001""10101010";
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// each frame 6x
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// AA BF 35 ........ AA AA
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// AA BF 35 ........ AA AA
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// AA BF 35 ........ AA AA
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// AA BF 35 ........ AA AA
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// AA BF 35 ........ AA AA
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// AA BF 35 ........ 00 00
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/* -------------------------------------------------------------------------- */
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#define BAUD_RATE (2399.0) // 2400
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/* -------------------------------------------------------------------------- */
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// manchester1 1->10,0->01: 1.bit
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// manchester2 0->10,1->01: 2.bit
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static void manchester1(char* frame_rawbits, char *frame_bits, int pos) {
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int i, c, out, buf;
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char bit, bits[2];
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c = 0;
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for (i = 0; i < pos/2; i++) { // -16
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bits[0] = frame_rawbits[2*i];
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bits[1] = frame_rawbits[2*i+1];
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if ((bits[0] == '0') && (bits[1] == '1')) { bit = '0'; out = 1; }
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else
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if ((bits[0] == '1') && (bits[1] == '0')) { bit = '1'; out = 1; }
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else { //
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if (buf == 0) { c = !c; out = 0; buf = 1; }
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else { bit = 'x'; out = 1; buf = 0; }
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}
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if (out) frame_bits[i] = bit;
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}
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}
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static int bits2bytes(char *bitstr, ui8_t *bytes, int len) {
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int i, bit, d, byteval;
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int bitpos, bytepos;
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bitpos = 0;
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bytepos = 0;
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while (bytepos < len) {
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byteval = 0;
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d = 1;
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for (i = 0; i < 8; i++) {
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//bit = *(bitstr+bitpos+i); /* little endian */
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bit = *(bitstr+bitpos+7-i); /* big endian */
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if (bit == '\0') goto frame_end;
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if (bit == '1') byteval += d;
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else /*if ((bit == '0') */ byteval += 0;
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d <<= 1;
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}
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bitpos += 8;
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bytes[bytepos++] = byteval;
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}
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frame_end:
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for (i = bytepos; i < FRAME_LEN; i++) bytes[i] = 0;
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return bytepos;
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}
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/* ------------------------------------------------------------------------------------ */
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static int datetime2GPSweek(int yy, int mm, int dd,
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int hr, int min, int sec,
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int *week, int *tow) {
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int ww = 0;
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int tt = 0;
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int gpsDays = 0;
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if ( mm < 3 ) { yy -= 1; mm += 12; }
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gpsDays = (int)(365.25*yy) + (int)(30.6001*(mm+1.0)) + dd - 723263; // 1980-01-06
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ww = gpsDays / 7;
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tt = gpsDays % 7;
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tt = tt*86400 + hr*3600 + min*60 + sec;
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*week = ww;
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*tow = tt;
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return 0;
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}
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/* ------------------------------------------------------------------------------------ */
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static ui32_t u4(ui8_t *bytes) { // 32bit unsigned int
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ui32_t val = 0; // le: p[0] | (p[1]<<8) | (p[2]<<16) | (p[3]<<24)
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memcpy(&val, bytes, 4);
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return val;
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}
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static i32_t i4(ui8_t *bytes) { // 32bit signed int
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i32_t val = 0; // le: p[0] | (p[1]<<8) | (p[2]<<16) | (p[3]<<24)
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memcpy(&val, bytes, 4);
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return val;
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}
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static ui32_t u3(ui8_t *bytes) { // 24bit unsigned int
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int val24 = 0;
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val24 = bytes[0] | (bytes[1]<<8) | (bytes[2]<<16);
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// = memcpy(&val, bytes, 3), val &= 0x00FFFFFF;
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return val24;
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}
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static int i3(ui8_t *bytes) { // 24bit signed int
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int val = 0,
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val24 = 0;
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val = bytes[0] | (bytes[1]<<8) | (bytes[2]<<16);
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val24 = val & 0xFFFFFF; if (val24 & 0x800000) val24 = val24 - 0x1000000;
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return val24;
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}
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static ui16_t u2(ui8_t *bytes) { // 16bit unsigned int
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return bytes[0] | (bytes[1]<<8);
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}
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static i16_t i2(ui8_t *bytes) { // 16bit signed int
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//return (i16_t)u2(bytes);
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int val = bytes[0] | (bytes[1]<<8);
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if (val & 0x8000) val -= 0x10000;
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return val;
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}
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// -----------------------------------------------------------------------------
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// AA BF 35 .... crc AA AA
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// "BF" header/subtype?
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// "35" frame length?
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#define OFS 0
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#define pos_CNT1 (OFS+ 3) // 1 nibble (0x80..0x8F ?)
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#define pos_TIME (OFS+ 4) // 3*1 byte
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#define pos_GPSecefX (OFS+ 8) // 4 byte
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#define pos_GPSecefY (OFS+12) // 4 byte
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#define pos_GPSecefZ (OFS+16) // 4 byte
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#define pos_GPSecefV (OFS+20) // 3*2 byte
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#define pos_GPSnSats (OFS+26) // 1 byte (num Sats ?)
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#define pos_PTU1 (OFS+35) // 4 byte
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#define pos_PTU2 (OFS+39) // 4 byte
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#define pos_CNT2 (OFS+43) // 1 byte (0x01..0x10 ?)
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#define pos_CFG (OFS+44) // 2/4 byte
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#define pos_CRC (OFS+48) // 2 byte
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// -----------------------------------------------------------------------------
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static int crc16rev(gpx_t *gpx, int start, int len) {
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int crc16poly = 0xA001; // rev 0x8005
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int rem = 0xFFFF, i, j;
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int byte;
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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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byte = gpx->frame[start+i];
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rem ^= byte;
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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 check_CRC(gpx_t *gpx) {
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ui32_t crclen = 45;
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ui32_t crcdat = 0;
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crcdat = u2(gpx->frame+pos_CRC);
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if ( crcdat != crc16rev(gpx, pos_CNT1, crclen) ) {
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return 1; // CRC NO
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}
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else return 0; // CRC OK
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}
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// -----------------------------------------------------------------------------
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// WGS84/GRS80 Ellipsoid
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#define EARTH_a 6378137.0
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#define EARTH_b 6356752.31424518
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#define EARTH_a2_b2 (EARTH_a*EARTH_a - EARTH_b*EARTH_b)
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const
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double a = EARTH_a,
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b = EARTH_b,
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a_b = EARTH_a2_b2,
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e2 = EARTH_a2_b2 / (EARTH_a*EARTH_a),
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ee2 = EARTH_a2_b2 / (EARTH_b*EARTH_b);
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static void ecef2elli(double X[], double *lat, double *lon, double *alt) {
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double phi, lam, R, p, t;
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lam = atan2( X[1] , X[0] );
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p = sqrt( X[0]*X[0] + X[1]*X[1] );
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t = atan2( X[2]*a , p*b );
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phi = atan2( X[2] + ee2 * b * sin(t)*sin(t)*sin(t) ,
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p - e2 * a * cos(t)*cos(t)*cos(t) );
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R = a / sqrt( 1 - e2*sin(phi)*sin(phi) );
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*alt = p / cos(phi) - R;
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*lat = phi*180/M_PI;
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*lon = lam*180/M_PI;
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}
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static int get_GPSkoord(gpx_t *gpx) {
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int k;
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int XYZ; // 32bit
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double X[3], lat, lon, alt;
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ui8_t *gpsVel;
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short vel16; // 16bit
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double V[3];
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double phi, lam, dir;
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double vN; double vE; double vU;
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for (k = 0; k < 3; k++)
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{
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memcpy(&XYZ, gpx->frame+(pos_GPSecefX+4*k), 4);
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X[k] = XYZ / 100.0;
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gpsVel = gpx->frame+(pos_GPSecefV+2*k);
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vel16 = gpsVel[0] | gpsVel[1] << 8;
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V[k] = vel16 / 100.0;
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}
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// ECEF-Position
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ecef2elli(X, &lat, &lon, &alt);
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gpx->lat = lat;
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gpx->lon = lon;
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gpx->alt = alt;
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if ((alt < -1000.0) || (alt > 80000.0)) return -3; // plausibility-check: altitude, if ecef=(0,0,0)
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// ECEF-Velocities
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// ECEF-Vel -> NorthEastUp
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phi = lat*M_PI/180.0;
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lam = lon*M_PI/180.0;
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vN = -V[0]*sin(phi)*cos(lam) - V[1]*sin(phi)*sin(lam) + V[2]*cos(phi);
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vE = -V[0]*sin(lam) + V[1]*cos(lam);
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vU = V[0]*cos(phi)*cos(lam) + V[1]*cos(phi)*sin(lam) + V[2]*sin(phi);
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// NEU -> HorDirVer
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gpx->vH = sqrt(vN*vN+vE*vE);
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dir = atan2(vE, vN) * 180.0 / M_PI;
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if (dir < 0) dir += 360.0;
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gpx->vD = dir;
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gpx->vV = vU;
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// num Sats solution ? GLONASS + GPS ?
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gpx->numSats = gpx->frame[pos_GPSnSats];
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return 0;
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}
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static int reset_time(gpx_t *gpx) {
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gpx->gps_cnt = 0;
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gpx->yr = 0;
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gpx->week = 0;
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return 0;
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}
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static int get_time(gpx_t *gpx) {
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gpx->hrs = gpx->frame[pos_TIME];
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gpx->min = gpx->frame[pos_TIME+1];
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gpx->sec = gpx->frame[pos_TIME+2];
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if (gpx->crcOK)
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{
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int week = 0;
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int tow = 0;
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int sec_gps = 0;
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gpx->gps_cnt_prev = gpx->gps_cnt;
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gpx->sec_day_prev = gpx->sec_day;
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gpx->sec_day = gpx->hrs*60*60 + gpx->min*60 + gpx->sec;
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// JSON frame counter: seconds since GPS (ignoring leap seconds)
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//
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if (gpx->yr == 0) { // 1980-01-06
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week = 0;
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tow = gpx->sec_day; // yr=mth=day=0
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}
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else {
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datetime2GPSweek(gpx->yr, gpx->mth, gpx->day, gpx->hrs, gpx->min, (int)(gpx->sec+0.5), &week, &tow);
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}
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sec_gps = week*604800 + tow; // SECONDS_IN_WEEK=7*86400=604800
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gpx->week = week;
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if (sec_gps > gpx->gps_cnt_prev) { // skip day roll-over until date update
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gpx->gps_cnt = sec_gps;
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}
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}
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return 0;
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}
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static float f32(ui32_t w) {
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float f = 0.0f;
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memcpy(&f, &w, 4);
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return f;
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}
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static int get_ptu(gpx_t *gpx) {
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// cf. МРЗ-3МК documentation
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float t = -273.15f;
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float rh = -1.0f;
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float ADC_MAX = 32767.0; //32767=(1<<15)? 32767?
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int ADCT = u4(gpx->frame+pos_PTU1); // u3?
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float adc_t = ADCT/100.0;
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int ADCH = u4(gpx->frame+pos_PTU2); // u3?
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float adc_h = ADCH/100.0;
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if (gpx->cfg_ntc == 0x7)
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{
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if (gpx->cfg_T == 0x7) {
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float poly1 = adc_t*adc_t * gpx->A_adcT + adc_t * gpx->B_adcT + gpx->C_adcT;
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float Rt = 100000.0*poly1 / (ADC_MAX - poly1);
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if (Rt > 0.0) {
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t = gpx->calB/log(Rt/gpx->calA) - gpx->calC - 273.15f;
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if (t < -120.0f || t > 120.0f) t = -273.15f;
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}
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}
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}
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gpx->T = t;
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if (gpx->T > -273.0f)
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{
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if (gpx->cfg_H == 0x7) {
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float poly2 = adc_h*adc_h * gpx->A_adcH + adc_h * gpx->B_adcH + gpx->A_adcH;
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float K = poly2/ADC_MAX;
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rh = (K - 0.1515) / (0.00636*(1.05460 - 0.00216*gpx->T)); // if T = 273.15, set T=0 ?
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if (rh < -10.0f || rh > 120.0f) rh = -1.0f;
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else {
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if (rh < 0.0f) rh = 0.0f;
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if (rh > 100.0f) rh = 100.0f;
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}
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}
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}
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gpx->RH = rh;
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return 0;
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}
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static int get_cfg(gpx_t *gpx) {
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gpx->subcnt1 = (gpx->frame[pos_CNT1] & 0xF);
|
||
gpx->subcnt2 = gpx->frame[pos_CNT2] ; // ? subcnt2 == subcnt1 + 1 ?
|
||
|
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if (gpx->crcOK)
|
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{
|
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ui32_t cfg32 = u4(gpx->frame+pos_CFG);
|
||
gpx->cfg[gpx->subcnt1] = cfg32;
|
||
|
||
switch (gpx->subcnt1) { // or use subcnt2 ?
|
||
// T-ntc A, B, C
|
||
case 0x0: //sub2=0x01:
|
||
// TODO: reset if changed?
|
||
gpx->calA = f32(cfg32); //memcpy(&gpx->calA, &cfg32, 4);
|
||
gpx->cfg_ntc |= 0x1;
|
||
break;
|
||
case 0x1: //sub2=0x02:
|
||
gpx->calB = f32(cfg32); //memcpy(&gpx->calB, &cfg32, 4);
|
||
gpx->cfg_ntc |= 0x2;
|
||
break;
|
||
case 0x2: //sub2=0x03:
|
||
gpx->calC = f32(cfg32); //memcpy(&gpx->calC, &cfg32, 4);
|
||
gpx->cfg_ntc |= 0x4;
|
||
break;
|
||
// ADC1/ADC_T calib ?
|
||
case 0x3: //sub2=0x04:
|
||
gpx->A_adcT = f32(cfg32);
|
||
gpx->cfg_T |= 0x1;
|
||
break;
|
||
case 0x4: //sub2=0x05:
|
||
gpx->B_adcT = f32(cfg32);
|
||
gpx->cfg_T |= 0x2;
|
||
break;
|
||
case 0x5: //sub2=0x06:
|
||
gpx->C_adcT = f32(cfg32);
|
||
gpx->cfg_T |= 0x4;
|
||
break;
|
||
// ADC2/ADC_H calib ?
|
||
case 0x6: //sub2=0x07:
|
||
gpx->A_adcH = f32(cfg32);
|
||
gpx->cfg_H |= 0x1;
|
||
break;
|
||
case 0x7: //sub2=0x08:
|
||
gpx->B_adcH = f32(cfg32);
|
||
gpx->cfg_H |= 0x2;
|
||
break;
|
||
case 0x8: //sub2=0x09:
|
||
gpx->C_adcH = f32(cfg32);
|
||
gpx->cfg_H |= 0x4;
|
||
break;
|
||
// radiosonde/GNSS SN
|
||
case 0xC: //sub2=0x0D: SN GLONASS/GPS ?
|
||
if (cfg32 != gpx->snC && gpx->snC > 0) {
|
||
//reset_cfg
|
||
gpx->snD = 0;
|
||
reset_time(gpx);
|
||
}
|
||
gpx->snC = cfg32; // 16 or 32 bit ?
|
||
break;
|
||
// sensor SN
|
||
case 0xD: //sub2=0x0E: SN sensor boom ?
|
||
if (cfg32 != gpx->snD && gpx->snD > 0) {
|
||
//reset_cfg
|
||
gpx->snC = 0;
|
||
reset_time(gpx);
|
||
}
|
||
gpx->snD = cfg32; // 16 or 32 bit ?
|
||
break;
|
||
// sensor date
|
||
case 0xE: //sub2=0x0F: calib date ?
|
||
break;
|
||
// date
|
||
case 0xF: //sub2=0x10: date
|
||
gpx->yr = cfg32 % 100;
|
||
gpx->yr += 2000;
|
||
cfg32 /= 100;
|
||
gpx->mth = cfg32 % 100;
|
||
cfg32 /= 100;
|
||
gpx->day = cfg32 % 100;
|
||
break;
|
||
default:
|
||
break;
|
||
}
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
// -----------------------------------------------------------------------------
|
||
|
||
#define ANSI_COLOR_RESET "\x1b[0m"
|
||
#define col_CSok "\x1b[38;5;2m"
|
||
#define col_CSno "\x1b[38;5;1m"
|
||
#define col_back "\x1b[38;5;244m"
|
||
|
||
|
||
static void print_gpx(gpx_t *gpx, int crcOK) {
|
||
|
||
//printf(" :%6.1f: ", sample_count/(double)sample_rate);
|
||
//
|
||
|
||
gpx->crcOK = crcOK;
|
||
|
||
get_cfg(gpx);
|
||
get_time(gpx);
|
||
get_GPSkoord(gpx);
|
||
|
||
get_ptu(gpx);
|
||
|
||
if (gpx->sec_day != gpx->sec_day_prev || !gpx->option.unq)
|
||
{
|
||
printf(" [%2d] ", gpx->subcnt1);
|
||
|
||
printf(" (%02d:%02d:%02d) ", gpx->hrs, gpx->min, gpx->sec);
|
||
|
||
printf(" lat: %.5f ", gpx->lat);
|
||
printf(" lon: %.5f ", gpx->lon);
|
||
printf(" alt: %.2f ", gpx->alt);
|
||
printf(" vH: %4.1f D: %5.1f vV: %3.1f ", gpx->vH, gpx->vD, gpx->vV);
|
||
if (gpx->option.vbs > 1) printf(" sats: %d ", gpx->numSats);
|
||
|
||
if (gpx->option.ptu) {
|
||
if (gpx->T > -273.0f || gpx->RH > -0.5f) printf(" ");
|
||
if (gpx->T > -273.0f) printf(" T=%.1fC", gpx->T);
|
||
if (gpx->RH > -0.5f) printf(" RH=%.0f%%", gpx->RH);
|
||
if (gpx->T > -273.0f || gpx->RH > -0.5f) printf(" ");
|
||
}
|
||
|
||
if (gpx->option.col) {
|
||
if (gpx->crcOK) printf(" "col_CSok"[OK]"ANSI_COLOR_RESET);
|
||
else printf(" "col_CSno"[NO]"ANSI_COLOR_RESET);
|
||
}
|
||
else {
|
||
printf(" %s", gpx->crcOK ? "[OK]" : "[NO]");
|
||
}
|
||
|
||
|
||
if (gpx->crcOK)
|
||
{
|
||
if (gpx->option.vbs)
|
||
{
|
||
//printf(" <%2d>", gpx->subcnt2);
|
||
// subcnt2 == subcnt1 + 1 ?
|
||
switch (gpx->subcnt1) {
|
||
case 0x0: if (gpx->option.vbs > 1) printf(" <%d> A: %.5f", gpx->subcnt2, gpx->calA); break;
|
||
case 0x1: if (gpx->option.vbs > 1) printf(" <%d> B: %.2f", gpx->subcnt2, gpx->calB); break;
|
||
case 0x2: if (gpx->option.vbs > 1) printf(" <%d> C: %.3f", gpx->subcnt2, gpx->calC); break;
|
||
case 0xC: printf(" <%d> snC: %d", gpx->subcnt2, gpx->snC); break;
|
||
case 0xD: printf(" <%d> snD: %d", gpx->subcnt2, gpx->snD); break;
|
||
case 0xE: printf(" <%d> calDate: %06d", gpx->subcnt2, gpx->cfg[gpx->subcnt1]); break;
|
||
case 0xF: printf(" <%d> %04d-%02d-%02d", gpx->subcnt2, gpx->yr, gpx->mth, gpx->day); break;
|
||
default: if (gpx->option.vbs > 1) printf(" <%d>", gpx->subcnt2); break;
|
||
}
|
||
}
|
||
|
||
if (gpx->option.dbg)
|
||
{
|
||
printf(" : ");
|
||
//printf(" [0x%X:0x%02X]", gpx->subcnt1, gpx->subcnt2);
|
||
printf(" 0x%08X =", gpx->cfg[gpx->subcnt1]);
|
||
if (gpx->subcnt1 > 0x8) printf(" %u ", gpx->cfg[gpx->subcnt1]); // 0x9,0xA not const
|
||
else {
|
||
float *f = (float*)(gpx->cfg+gpx->subcnt1);
|
||
printf(" %g ", *f);
|
||
}
|
||
}
|
||
}
|
||
|
||
printf("\n");
|
||
}
|
||
|
||
|
||
if (gpx->option.jsn && gpx->crcOK) {
|
||
// sonde SN change remains undetected until next SN update
|
||
if (gpx->week > 0 && gpx->gps_cnt > gpx->gps_cnt_prev && gpx->snC > 0 && gpx->snD > 0)
|
||
{
|
||
if (gpx->gps_cnt - gpx->gps_cnt_prev > TIMEOUT_JSN && gpx->gps_cnt_prev > gpx->sec_day_prev) {
|
||
// reset SN after TIMEOUT_JSN sec gap;
|
||
// if new signal replaces old one within timeout limit,
|
||
// new positions might still be transmitted with old SN
|
||
//reset_cfg
|
||
gpx->snC = 0;
|
||
gpx->snD = 0;
|
||
reset_time(gpx);
|
||
}
|
||
else {
|
||
char *ver_jsn = NULL;
|
||
printf("{ \"type\": \"%s\"", "MRZ");
|
||
printf(", \"frame\": %lu, ", (unsigned long)gpx->gps_cnt); // sec_gps0+0.5
|
||
printf("\"id\": \"MRZ-%d-%d\", \"datetime\": \"%04d-%02d-%02dT%02d:%02d:%02dZ\", \"lat\": %.5f, \"lon\": %.5f, \"alt\": %.5f, \"vel_h\": %.5f, \"heading\": %.5f, \"vel_v\": %.5f, \"sats\": %d",
|
||
gpx->snC, gpx->snD, gpx->yr, gpx->mth, gpx->day, gpx->hrs, gpx->min, gpx->sec, gpx->lat, gpx->lon, gpx->alt, gpx->vH, gpx->vD, gpx->vV, gpx->numSats);
|
||
if (gpx->option.ptu) {
|
||
if (gpx->T > -273.0f) {
|
||
fprintf(stdout, ", \"temp\": %.1f", gpx->T );
|
||
}
|
||
if (gpx->RH > -0.5f) {
|
||
fprintf(stdout, ", \"humidity\": %.1f", gpx->RH );
|
||
}
|
||
}
|
||
if (gpx->jsn_freq > 0) {
|
||
printf(", \"freq\": %d", gpx->jsn_freq);
|
||
}
|
||
|
||
// Reference time/position
|
||
printf(", \"ref_datetime\": \"%s\"", "UTC" ); // {"GPS", "UTC"} GPS-UTC=leap_sec
|
||
printf(", \"ref_position\": \"%s\"", "GPS" ); // {"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");
|
||
}
|
||
}
|
||
}
|
||
|
||
}
|
||
|
||
static void print_frame(gpx_t *gpx, int pos, int b2B) {
|
||
int j;
|
||
int crcOK = 0;
|
||
|
||
static int frame_count = 0;
|
||
|
||
|
||
if (b2B)
|
||
{
|
||
if (gpx->option.raw == 2) {
|
||
//printf(" :%6.1f: ", sample_count/(double)sample_rate);
|
||
//
|
||
for (j = 0; j < pos; j++) {
|
||
printf("%c", gpx->frame_bits[j]);
|
||
}
|
||
//if (frame_count % 3 == 2)
|
||
{
|
||
printf("\n");
|
||
}
|
||
}
|
||
else {
|
||
int frmlen = (pos-bits_ofs)/8;
|
||
bits2bytes(gpx->frame_bits+bits_ofs, gpx->frame, frmlen);
|
||
|
||
crcOK = (check_CRC(gpx) == 0);
|
||
|
||
if (gpx->option.raw == 1) {
|
||
//printf(" :%6.1f: ", sample_count/(double)sample_rate);
|
||
//
|
||
for (j = 0; j < frmlen; j++) {
|
||
printf("%02X ", gpx->frame[j]);
|
||
}
|
||
printf(" %s", crcOK ? "[OK]" : "[NO]");
|
||
printf("\n");
|
||
}
|
||
else {
|
||
|
||
//if (frame_count % 3 == 0)
|
||
{
|
||
if (pos/8 > pos_GPSecefV+6) print_gpx(gpx, crcOK);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
else
|
||
{
|
||
int frmlen = pos;
|
||
|
||
crcOK = (check_CRC(gpx) == 0);
|
||
|
||
if (gpx->option.raw) {
|
||
//printf(" :%6.1f: ", sample_count/(double)sample_rate);
|
||
//
|
||
for (j = 0; j < frmlen; j++) {
|
||
printf("%02X ", gpx->frame[j]);
|
||
}
|
||
printf(" %s", crcOK ? "[OK]" : "[NO]");
|
||
printf("\n");
|
||
}
|
||
else {
|
||
if (pos > pos_GPSecefV+6) print_gpx(gpx, crcOK);
|
||
}
|
||
}
|
||
|
||
frame_count++;
|
||
}
|
||
|
||
/* -------------------------------------------------------------------------- */
|
||
|
||
|
||
int main(int argc, char **argv) {
|
||
|
||
FILE *fp;
|
||
char *fpname;
|
||
int pos, bit;
|
||
int cfreq = -1;
|
||
|
||
float baudrate = -1;
|
||
|
||
int option_min = 0;
|
||
int option_iq = 0;
|
||
int option_iqdc = 0;
|
||
int option_lp = 0;
|
||
int option_dc = 0;
|
||
int option_noLUT = 0;
|
||
int option_softin = 0;
|
||
int option_pcmraw = 0;
|
||
int wavloaded = 0;
|
||
int sel_wavch = 0; // audio channel: left
|
||
int rawhex = 0;
|
||
int k;
|
||
|
||
int bitQ;
|
||
hsbit_t hsbit, hsbit1;
|
||
|
||
int header_found = 0;
|
||
|
||
float thres = 0.76; // dsp.mv threshold
|
||
float _mv = 0.0;
|
||
|
||
float lpIQ_bw = 9.0e3;
|
||
|
||
int bitpos = 0;
|
||
int symlen = 2;
|
||
int bitofs = 2; // +0 .. +3
|
||
int shift = 0;
|
||
|
||
pcm_t pcm = {0};
|
||
dsp_t dsp = {0}; //memset(&dsp, 0, sizeof(dsp));
|
||
|
||
hdb_t hdb = {0};
|
||
|
||
gpx_t gpx = {0};
|
||
|
||
|
||
#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) ) {
|
||
fprintf(stderr, "%s [options] audio.wav\n", fpname);
|
||
fprintf(stderr, " options:\n");
|
||
fprintf(stderr, " -v, --verbose\n");
|
||
fprintf(stderr, " -r, --raw\n");
|
||
fprintf(stderr, " -i, --invert\n");
|
||
return 0;
|
||
}
|
||
else if ( (strcmp(*argv, "--ofs") == 0) ) {
|
||
++argv;
|
||
if (*argv) {
|
||
bits_ofs = atoi(*argv);
|
||
}
|
||
else return -1;
|
||
}
|
||
else if ( (strcmp(*argv, "--dbg" ) == 0) ) { gpx.option.dbg = 1; }
|
||
else if ( (strcmp(*argv, "-v") == 0) || (strcmp(*argv, "--verbose") == 0) ) {
|
||
gpx.option.vbs = 1;
|
||
}
|
||
else if ( (strcmp(*argv, "-vv" ) == 0) ) gpx.option.vbs = 2;
|
||
else if ( (strcmp(*argv, "-r") == 0) || (strcmp(*argv, "--raw") == 0) ) {
|
||
gpx.option.raw = 1;
|
||
}
|
||
else if ( (strcmp(*argv, "-R") == 0) || (strcmp(*argv, "--RAW") == 0) ) {
|
||
gpx.option.raw = 2;
|
||
}
|
||
else if ( (strcmp(*argv, "-i") == 0) || (strcmp(*argv, "--invert") == 0) ) {
|
||
gpx.option.inv = 1;
|
||
}
|
||
else if (strcmp(*argv, "--auto") == 0) { gpx.option.aut = 1; }
|
||
else if ( (strcmp(*argv, "--uniq") == 0) ) {
|
||
gpx.option.unq = 1;
|
||
}
|
||
else if ( (strcmp(*argv, "-c") == 0) || (strcmp(*argv, "--color") == 0) ) {
|
||
gpx.option.col = 1;
|
||
}
|
||
else if ( (strcmp(*argv, "--br") == 0) ) {
|
||
++argv;
|
||
if (*argv) {
|
||
baudrate = atof(*argv);
|
||
if (baudrate < 2000 || baudrate > 3000) baudrate = BAUD_RATE; // 2399..2400
|
||
}
|
||
else return -1;
|
||
}
|
||
else if (strcmp(*argv, "--ecc" ) == 0) { gpx.option.ecc = 1; }
|
||
else if (strcmp(*argv, "--ptu") == 0) {
|
||
gpx.option.ptu = 1;
|
||
}
|
||
else if (strcmp(*argv, "--ch2") == 0) { sel_wavch = 1; } // right channel (default: 0=left)
|
||
else if (strcmp(*argv, "--softin") == 0) { option_softin = 1; } // float32 soft input
|
||
else if (strcmp(*argv, "-d") == 0) {
|
||
++argv;
|
||
if (*argv) {
|
||
shift = atoi(*argv);
|
||
if (shift > 4) shift = 4;
|
||
if (shift < -4) shift = -4;
|
||
}
|
||
else return -1;
|
||
}
|
||
else if (strcmp(*argv, "--iq0") == 0) { option_iq = 1; } // differential/FM-demod
|
||
else if (strcmp(*argv, "--iq2") == 0) { option_iq = 2; }
|
||
else if (strcmp(*argv, "--iq3") == 0) { option_iq = 3; } // iq2==iq3
|
||
else if (strcmp(*argv, "--iqdc") == 0) { option_iqdc = 1; } // iq-dc removal (iq0,2,3)
|
||
else if (strcmp(*argv, "--IQ") == 0) { // fq baseband -> IF (rotate from and decimate)
|
||
double fq = 0.0; // --IQ <fq> , -0.5 < fq < 0.5
|
||
++argv;
|
||
if (*argv) fq = atof(*argv);
|
||
else return -1;
|
||
if (fq < -0.5) fq = -0.5;
|
||
if (fq > 0.5) fq = 0.5;
|
||
dsp.xlt_fq = -fq; // S(t) -> S(t)*exp(-f*2pi*I*t)
|
||
option_iq = 5;
|
||
}
|
||
else if (strcmp(*argv, "--lpIQ") == 0) { option_lp |= LP_IQ; } // IQ/IF lowpass
|
||
else if (strcmp(*argv, "--lpbw") == 0) { // IQ lowpass BW / kHz
|
||
double bw = 0.0;
|
||
++argv;
|
||
if (*argv) bw = atof(*argv);
|
||
else return -1;
|
||
if (bw > 4.6 && bw < 32.0) lpIQ_bw = bw*1e3;
|
||
option_lp |= LP_IQ;
|
||
}
|
||
else if (strcmp(*argv, "--lpFM") == 0) { option_lp |= LP_FM; } // FM lowpass
|
||
else if (strcmp(*argv, "--dc") == 0) { option_dc = 1; }
|
||
else if (strcmp(*argv, "--noLUT") == 0) { option_noLUT = 1; }
|
||
else if (strcmp(*argv, "--min") == 0) {
|
||
option_min = 1;
|
||
}
|
||
else if (strcmp(*argv, "--json") == 0) {
|
||
gpx.option.jsn = 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 if (strcmp(*argv, "--rawhex") == 0) { rawhex = 3; } // raw hex input
|
||
else if (strcmp(*argv, "-") == 0) {
|
||
int sample_rate = 0, bits_sample = 0, channels = 0;
|
||
++argv;
|
||
if (*argv) sample_rate = atoi(*argv); else return -1;
|
||
++argv;
|
||
if (*argv) bits_sample = atoi(*argv); else return -1;
|
||
channels = 2;
|
||
if (sample_rate < 1 || (bits_sample != 8 && bits_sample != 16 && bits_sample != 32)) {
|
||
fprintf(stderr, "- <sr> <bs>\n");
|
||
return -1;
|
||
}
|
||
pcm.sr = sample_rate;
|
||
pcm.bps = bits_sample;
|
||
pcm.nch = channels;
|
||
option_pcmraw = 1;
|
||
}
|
||
else {
|
||
fp = fopen(*argv, "rb");
|
||
if (fp == NULL) {
|
||
fprintf(stderr, "error open %s\n", *argv);
|
||
return -1;
|
||
}
|
||
wavloaded = 1;
|
||
}
|
||
++argv;
|
||
}
|
||
if (!wavloaded) fp = stdin;
|
||
|
||
if (option_iq == 5 && option_dc) option_lp |= LP_FM;
|
||
|
||
// LUT faster for decM, however frequency correction after decimation
|
||
// LUT recommonded if decM > 2
|
||
//
|
||
if (option_noLUT && option_iq == 5) dsp.opt_nolut = 1; else dsp.opt_nolut = 0;
|
||
|
||
|
||
gpx.jsn_freq = 0;
|
||
if (cfreq > 0) gpx.jsn_freq = (cfreq+500)/1000;
|
||
|
||
|
||
#ifdef EXT_FSK
|
||
if (!option_softin) {
|
||
option_softin = 1;
|
||
fprintf(stderr, "reading float32 soft symbols\n");
|
||
}
|
||
#endif
|
||
|
||
if (!rawhex) {
|
||
|
||
if (!option_softin) {
|
||
|
||
if (option_iq == 0 && option_pcmraw) {
|
||
fclose(fp);
|
||
fprintf(stderr, "error: raw data not IQ\n");
|
||
return -1;
|
||
}
|
||
if (option_iq) sel_wavch = 0;
|
||
|
||
pcm.sel_ch = sel_wavch;
|
||
if (option_pcmraw == 0) {
|
||
k = read_wav_header(&pcm, fp);
|
||
if ( k < 0 ) {
|
||
fclose(fp);
|
||
fprintf(stderr, "error: wav header\n");
|
||
return -1;
|
||
}
|
||
}
|
||
|
||
if (cfreq > 0) {
|
||
int fq_kHz = (cfreq - dsp.xlt_fq*pcm.sr + 500)/1e3;
|
||
gpx.jsn_freq = fq_kHz;
|
||
}
|
||
|
||
// mrz-n1: BT=1.0, h=2.0 ?
|
||
symlen = 2;
|
||
|
||
// init dsp
|
||
//
|
||
dsp.fp = fp;
|
||
dsp.sr = pcm.sr;
|
||
dsp.bps = pcm.bps;
|
||
dsp.nch = pcm.nch;
|
||
dsp.ch = pcm.sel_ch;
|
||
dsp.br = (float)BAUD_RATE;
|
||
dsp.sps = (float)dsp.sr/dsp.br;
|
||
dsp.symlen = symlen;
|
||
dsp.symhd = symlen;
|
||
dsp._spb = dsp.sps*symlen;
|
||
dsp.hdr = mrz_header;
|
||
dsp.hdrlen = strlen(mrz_header);
|
||
dsp.BT = 1.0; // bw/time (ISI) // 1.0..2.0 // TODO
|
||
dsp.h = 2.0; // // 1.5..2.5? modulation index abzgl. BT // TODO
|
||
dsp.opt_iq = option_iq;
|
||
dsp.opt_iqdc = option_iqdc;
|
||
dsp.opt_lp = option_lp;
|
||
dsp.lpIQ_bw = lpIQ_bw; // 9.0e3 (8e3..10e3) // IF lowpass bandwidth
|
||
dsp.lpFM_bw = 6e3; // FM audio lowpass
|
||
dsp.opt_dc = option_dc;
|
||
dsp.opt_IFmin = option_min;
|
||
|
||
if ( dsp.sps < 5 ) {
|
||
fprintf(stderr, "note: sample rate low (%.1f sps)\n", dsp.sps);
|
||
}
|
||
|
||
if (baudrate > 0) {
|
||
dsp.br = (float)baudrate;
|
||
dsp.sps = (float)dsp.sr/dsp.br;
|
||
fprintf(stderr, "sps corr: %.4f\n", dsp.sps);
|
||
}
|
||
|
||
k = init_buffers(&dsp);
|
||
if ( k < 0 ) {
|
||
fprintf(stderr, "error: init buffers\n");
|
||
return -1;
|
||
}
|
||
|
||
//if (option_iq >= 2) bitofs += 1; // FM: +1 , IQ: +2
|
||
bitofs += shift;
|
||
}
|
||
else {
|
||
// init circular header bit buffer
|
||
hdb.hdr = mrz_header;
|
||
hdb.len = strlen(mrz_header);
|
||
//hdb.thb = 1.0 - 3.1/(float)hdb.len; // 1.0-max_bit_errors/hdrlen
|
||
hdb.bufpos = -1;
|
||
hdb.buf = NULL;
|
||
/*
|
||
calloc(hdb.len, sizeof(char));
|
||
if (hdb.buf == NULL) {
|
||
fprintf(stderr, "error: malloc\n");
|
||
return -1;
|
||
}
|
||
*/
|
||
hdb.ths = 0.82; // caution 0.8: false positive / offset
|
||
hdb.sbuf = calloc(hdb.len, sizeof(float));
|
||
if (hdb.sbuf == NULL) {
|
||
fprintf(stderr, "error: malloc\n");
|
||
return -1;
|
||
}
|
||
}
|
||
|
||
|
||
manchester1(mrz_header, gpx.frame_bits, HEADLEN); // HEADLEN==FRAMESTART
|
||
|
||
while ( 1 )
|
||
{
|
||
if (option_softin) {
|
||
header_found = find_softbinhead(fp, &hdb, &_mv);
|
||
}
|
||
else { // FM-audio:
|
||
header_found = find_header(&dsp, thres, 2, bitofs, dsp.opt_dc); // optional 2nd pass: dc=0
|
||
_mv = dsp.mv;
|
||
}
|
||
|
||
if (header_found == EOF) break;
|
||
|
||
// mv == correlation score
|
||
if (_mv *(0.5-gpx.option.inv) < 0) {
|
||
if (gpx.option.aut == 0) header_found = 0;
|
||
else gpx.option.inv ^= 0x1;
|
||
}
|
||
|
||
if (header_found)
|
||
{
|
||
bitpos = 0;
|
||
pos = FRAMESTART/2;
|
||
|
||
while ( pos < BITFRAME_LEN )
|
||
{
|
||
if (option_softin) {
|
||
float s1 = 0.0;
|
||
float s2 = 0.0;
|
||
float s = 0.0;
|
||
bitQ = f32soft_read(fp, &s1);
|
||
if (bitQ != EOF) {
|
||
bitQ = f32soft_read(fp, &s2);
|
||
if (bitQ != EOF) {
|
||
s = s2-s1; // integrate both symbols // Manchester2=s2 (invert to Manchester1=s1 below)
|
||
bit = (s>=0.0); // no soft decoding
|
||
hsbit.hb = bit;
|
||
hsbit.sb = s;
|
||
}
|
||
}
|
||
}
|
||
else {
|
||
float bl = -1;
|
||
if (option_iq > 2) bl = 2.0;
|
||
//bitQ = read_slbit(&dsp, &bit, 0, bitofs, bitpos, bl, 0); // symlen=2
|
||
bitQ = read_softbit2p(&dsp, &hsbit, 0, bitofs, bitpos, bl, 0, &hsbit1); // symlen=2
|
||
bit = hsbit.hb;
|
||
}
|
||
if ( bitQ == EOF ) break; // liest 2x EOF
|
||
|
||
if (!gpx.option.inv) { // Manchester1
|
||
hsbit.hb ^= 1;
|
||
hsbit.sb = -hsbit.sb;
|
||
bit ^= 1;
|
||
}
|
||
|
||
gpx.frame_bits[pos] = 0x30 + (hsbit.hb & 1);
|
||
|
||
bitpos += 1;
|
||
pos++;
|
||
}
|
||
gpx.frame_bits[pos] = '\0';
|
||
|
||
print_frame(&gpx, pos, 1);
|
||
if (pos < BITFRAME_LEN) break;
|
||
header_found = 0;
|
||
|
||
}
|
||
}
|
||
|
||
if (!option_softin) free_buffers(&dsp);
|
||
else {
|
||
if (hdb.buf) { free(hdb.buf); hdb.buf = NULL; }
|
||
}
|
||
}
|
||
else //if (rawhex)
|
||
{
|
||
char buffer_rawhex[3*FRAME_LEN+12];
|
||
char *pbuf = NULL, *buf_sp = NULL;
|
||
ui8_t frmbyte;
|
||
int frameofs = 0, len, i;
|
||
|
||
while (1 > 0) {
|
||
|
||
pbuf = fgets(buffer_rawhex, 3*FRAME_LEN+12, fp);
|
||
if (pbuf == NULL) break;
|
||
buffer_rawhex[3*FRAME_LEN] = '\0';
|
||
buf_sp = strchr(buffer_rawhex, '['); // # (%d) ecc-info?
|
||
if (buf_sp != NULL && buf_sp-buffer_rawhex < 3*FRAME_LEN) {
|
||
buffer_rawhex[buf_sp-buffer_rawhex] = '\0';
|
||
}
|
||
len = strlen(buffer_rawhex) / 3;
|
||
if (len > 20) {
|
||
for (i = 0; i < len; i++) { //%2x SCNx8=%hhx(inttypes.h)
|
||
sscanf(buffer_rawhex+3*i, "%2hhx", &frmbyte);
|
||
// wenn ohne %hhx: sscanf(buffer_rawhex+rawhex*i, "%2x", &byte); frame[frameofs+i] = (ui8_t)byte;
|
||
gpx.frame[frameofs+i] = frmbyte;
|
||
}
|
||
print_frame(&gpx, len, 0);
|
||
}
|
||
}
|
||
}
|
||
|
||
|
||
fclose(fp);
|
||
|
||
return 0;
|
||
}
|
||
|