/* big endian forest * * gcc mXX_20180919.c -lm * * 2018-09-19 Ury: (len=0x43) * 2019-11-06 Ury: (len=0x45) ./a.out -b -c -v --br 9600 new_rs_48k.wav * */ #include #include #include #include #ifdef CYGWIN #include // cygwin: _setmode() #include #endif typedef unsigned char ui8_t; typedef unsigned short ui16_t; typedef struct { int week; int gpssec; int jahr; int monat; int tag; int wday; int std; int min; int sek; double lat; double lon; double alt; double vH; double vD; double vV; int vE; int vN; int vU; } datum_t; datum_t datum; int option_verbose = 0, // ausfuehrliche Anzeige option_raw = 0, // rohe Frames option_inv = 0, // invertiert Signal option_res = 0, // genauere Bitmessung option_b = 0, option_color = 0, wavloaded = 0; int wav_channel = 0; // audio channel: left /* -------------------------------------------------------------------------- */ /* * Convert GPS Week and Seconds to Modified Julian Day. * - Adapted from sci.astro FAQ. * - Ignores UTC leap seconds. */ void Gps2Date(long GpsWeek, long GpsSeconds, int *Year, int *Month, int *Day) { long GpsDays, Mjd; long J, C, Y, M; GpsDays = GpsWeek * 7 + (GpsSeconds / 86400); Mjd = 44244 + GpsDays; J = Mjd + 2468570; C = 4 * J / 146097; J = J - (146097 * C + 3) / 4; Y = 4000 * (J + 1) / 1461001; J = J - 1461 * Y / 4 + 31; M = 80 * J / 2447; *Day = J - 2447 * M / 80; J = M / 11; *Month = M + 2 - (12 * J); *Year = 100 * (C - 49) + Y + J; } /* -------------------------------------------------------------------------- */ #define BAUD_RATE 9600 //9616 //2*4800 int sample_rate = 0, bits_sample = 0, channels = 0; float samples_per_bit = 0; int findstr(char *buf, char *str, int pos) { int i; for (i = 0; i < 4; i++) { if (buf[(pos+i)%4] != str[i]) break; } return i; } int read_wav_header(FILE *fp) { char txt[4+1] = "\0\0\0\0"; unsigned char dat[4]; int byte, p=0; if (fread(txt, 1, 4, fp) < 4) return -1; if (strncmp(txt, "RIFF", 4)) return -1; if (fread(txt, 1, 4, fp) < 4) return -1; // pos_WAVE = 8L if (fread(txt, 1, 4, fp) < 4) return -1; if (strncmp(txt, "WAVE", 4)) return -1; // pos_fmt = 12L for ( ; ; ) { if ( (byte=fgetc(fp)) == EOF ) return -1; txt[p % 4] = byte; p++; if (p==4) p=0; if (findstr(txt, "fmt ", p) == 4) break; } if (fread(dat, 1, 4, fp) < 4) return -1; if (fread(dat, 1, 2, fp) < 2) return -1; if (fread(dat, 1, 2, fp) < 2) return -1; channels = dat[0] + (dat[1] << 8); if (fread(dat, 1, 4, fp) < 4) return -1; memcpy(&sample_rate, dat, 4); //sample_rate = dat[0]|(dat[1]<<8)|(dat[2]<<16)|(dat[3]<<24); if (fread(dat, 1, 4, fp) < 4) return -1; if (fread(dat, 1, 2, fp) < 2) return -1; //byte = dat[0] + (dat[1] << 8); if (fread(dat, 1, 2, fp) < 2) return -1; bits_sample = dat[0] + (dat[1] << 8); // pos_dat = 36L + info for ( ; ; ) { if ( (byte=fgetc(fp)) == EOF ) return -1; txt[p % 4] = byte; p++; if (p==4) p=0; if (findstr(txt, "data", p) == 4) break; } if (fread(dat, 1, 4, fp) < 4) return -1; fprintf(stderr, "sample_rate: %d\n", sample_rate); fprintf(stderr, "bits : %d\n", bits_sample); fprintf(stderr, "channels : %d\n", channels); if ((bits_sample != 8) && (bits_sample != 16)) return -1; samples_per_bit = sample_rate/(float)BAUD_RATE; fprintf(stderr, "samples/bit: %.2f\n", samples_per_bit); return 0; } #define EOF_INT 0x1000000 unsigned long sample_count = 0; double bitgrenze = 0; int read_signed_sample(FILE *fp) { // int = i32_t int byte, i, sample=0, s=0; // EOF -> 0x1000000 for (i = 0; i < channels; i++) { // i = 0: links bzw. mono byte = fgetc(fp); if (byte == EOF) return EOF_INT; if (i == wav_channel) sample = byte; if (bits_sample == 16) { byte = fgetc(fp); if (byte == EOF) return EOF_INT; if (i == wav_channel) sample += byte << 8; } } if (bits_sample == 8) s = sample-128; // 8bit: 00..FF, centerpoint 0x80=128 if (bits_sample == 16) s = (short)sample; sample_count++; return s; } int par=1, par_alt=1; int read_bits_fsk(FILE *fp, int *bit, int *len) { static int sample; int n, y0; float l, x1; static float x0; n = 0; do{ y0 = sample; sample = read_signed_sample(fp); if (sample == EOF_INT) return EOF; //sample_count++; // in read_signed_sample() par_alt = par; par = (sample >= 0) ? 1 : -1; // 8bit: 0..127,128..255 (-128..-1,0..127) n++; } while (par*par_alt > 0); if (!option_res) l = (float)n / samples_per_bit; else { // genauere Bitlaengen-Messung x1 = sample/(float)(sample-y0); // hilft bei niedriger sample rate l = (n+x0-x1) / samples_per_bit; // meist mehr frames (nicht immer) x0 = x1; } *len = (int)(l+0.5); if (!option_inv) *bit = (1+par_alt)/2; // oben 1, unten -1 else *bit = (1-par_alt)/2; // sdr#= 0) ? 1 : -1; // 8bit: 0..127,128..255 (-128..-1,0..127) sum += sample; scount++; } while (scount < bitgrenze); // n < samples_per_bit if (sum >= 0) *bit = 1; else *bit = 0; if (option_inv) *bit ^= 1; return 0; } int read_rawbit2(FILE *fp, int *bit) { int sample; int sum; sum = 0; if (bitstart) { scount = 0; // eigentlich scount = 1 bitgrenze = 0; // oder bitgrenze = -1 bitstart = 0; } bitgrenze += samples_per_bit; do { sample = read_signed_sample(fp); if (sample == EOF_INT) return EOF; //sample_count++; // in read_signed_sample() //par = (sample >= 0) ? 1 : -1; // 8bit: 0..127,128..255 (-128..-1,0..127) sum += sample; scount++; } while (scount < bitgrenze); // n < samples_per_bit bitgrenze += samples_per_bit; do { sample = read_signed_sample(fp); if (sample == EOF_INT) return EOF; //sample_count++; // in read_signed_sample() //par = (sample >= 0) ? 1 : -1; // 8bit: 0..127,128..255 (-128..-1,0..127) sum -= sample; scount++; } while (scount < bitgrenze); // n < samples_per_bit if (sum >= 0) *bit = 1; else *bit = 0; if (option_inv) *bit ^= 1; return 0; } /* -------------------------------------------------------------------------- */ /* Header = Sync-Header + Sonde-Header: 1100110011001100 1010011001001100 1101010011010011 0100110101010101 0011010011001100 uudduudduudduudd ududduuddudduudd uudududduududduu dudduudududududu dduududduudduudd (oder:) dduudduudduudduu duduudduuduudduu ddududuudduduudd uduuddududududud uudduduudduudduu (komplement) 0 0 0 0 0 0 0 0 1 1 - - - 0 0 0 0 1 1 0 0 1 0 0 1 0 0 1 1 1 1 1 0 0 1 0 0 0 0 0 */ #define BITS 8 #define HEADLEN 32 // HEADLEN+HEADOFS=32 <= strlen(header) #define HEADOFS 0 // Sync-Header (raw) // Sonde-Header (bits) //char head[] = "11001100110011001010011001001100"; //"011001001001111100100000"; // M10: 64 9F 20 , M2K2: 64 8F 20 //"011101101001111100100000"; // M10: 76 9F 20 , aux-data? //"011001000100100100001001"; // M10-dop: 64 49 09 //"011001001010111100000010"; // M10gtop: 64 AF 02 // M20?: 45 20 char header[] = "10011001100110010100110010011001"; #define FRAME_LEN (0x43+1) //(100+1) // 0x64+1 #define BITFRAME_LEN (FRAME_LEN*BITS) #define RAWBITFRAME_LEN (BITFRAME_LEN*2) char buf[HEADLEN]; int bufpos = -1; #define FRAMESTART 0 #define AUX_LEN 20 #define BITAUX_LEN (AUX_LEN*BITS) #define RAWBITAUX_LEN (BITAUX_LEN*2) ui8_t frame_bytes[FRAME_LEN+AUX_LEN+2]; char frame_rawbits[RAWBITFRAME_LEN+RAWBITAUX_LEN+16]; // frame_rawbits-32="11001100110011001010011001001100"; char frame_bits[BITFRAME_LEN+BITAUX_LEN+8]; int auxlen = 0; // 0 .. 0x76-0x64 void inc_bufpos() { bufpos = (bufpos+1) % HEADLEN; } char cb_inv(char c) { if (c == '0') return '1'; if (c == '1') return '0'; return c; } // Gefahr bei Manchester-Codierung: inverser Header wird leicht fehl-erkannt // da manchester1 und manchester2 nur um 1 bit verschoben int compare2() { int i, j; i = 0; j = bufpos; while (i < HEADLEN) { if (j < 0) j = HEADLEN-1; if (buf[j] != header[HEADOFS+HEADLEN-1-i]) break; j--; i++; } if (i == HEADLEN) return 1; i = 0; j = bufpos; while (i < HEADLEN) { if (j < 0) j = HEADLEN-1; if (buf[j] != cb_inv(header[HEADOFS+HEADLEN-1-i])) break; j--; i++; } if (i == HEADLEN) return -1; return 0; } int bits2bytes(char *bitstr, ui8_t *bytes) { int i, bit, d, byteval; int bitpos, bytepos; bitpos = 0; bytepos = 0; while (bytepos < FRAME_LEN+AUX_LEN) { byteval = 0; d = 1; for (i = 0; i < BITS; i++) { //bit=*(bitstr+bitpos+i); /* little endian */ bit=*(bitstr+bitpos+7-i); /* big endian */ // bit == 'x' ? if (bit == '1') byteval += d; else /*if ((bit == '0') || (bit == 'x'))*/ byteval += 0; d <<= 1; } bitpos += BITS; bytes[bytepos++] = byteval & 0xFF; } //while (bytepos < FRAME_LEN+AUX_LEN) bytes[bytepos++] = 0; return 0; } /* -------------------------------------------------------------------------- */ // PSK (bzw. biphase-M (oder differential Manchester?)) // nach Synchronisation: 00,11->0 ; 01,10->1 (Phasenwechsel) void psk_bpm(char* frame_rawbits, char *frame_bits) { int i; char bit; //int err = 0; for (i = 0; i < BITFRAME_LEN+BITAUX_LEN; i++) { //if (i > 0 && (frame_rawbits[2*i] == frame_rawbits[2*i-1])) err = 1; if (frame_rawbits[2*i] == frame_rawbits[2*i+1]) bit = '0'; else bit = '1'; //if (err) frame_bits[i] = 'x'; else frame_bits[i] = bit; //err = 0; } } /* Header = Sync-Header + Sonde-Header: 1100110011001100 1010011001001100 1101010011010011 0100110101010101 0011010011001100 uudduudduudduudd ududduuddudduudd uudududduududduu dudduudududududu dduududduudduudd (oder:) dduudduudduudduu duduudduuduudduu ddududuudduduudd uduuddududududud uudduduudduudduu (komplement) 0 0 0 0 0 0 0 0 1 1 - - - 0 0 0 0 1 1 0 0 1 0 0 1 0 0 1 1 1 1 1 0 0 1 0 0 0 0 0 */ /* 110101001101001101001101010101010011010011001100 101010011010011010011010101010100110100110011001011001100101011001100110011001100110011001100101100110011001100110011001100101010101010101010101010101101010100110011010011001011001011010101010010101100110100110010101100110011001011001100110100101011010101001100101010101101010011001010101100110010110100110010101100101100101100110101010011001100110010110011001100110011001100110100101011010101001101010100101100101100110011001100110011001100110011001100110011001011001101010011001100110011010101001100101100110100110011001010101101001100110010110011010100110100110011010100110011001010101101001100110010101100110011010101001100110101001100110011001100101100110011001100110011001100110011001100110011001100110011001100110011001100110011001100110011010011010100110100110011001100110011001100110011001100101101001011010100101101001101001100110100110100110010110010110101010010110010110011001011001010101010101010110011001100110011010011010100110011001011001100110011001100110011001100110011001100110011001100110101001011010011010010110010110010101010110010110011001101001101010101010011010100110011010011010011010100110101001100110011010100110010110011001010110101001101001100110100101011001100110011010011001100110011001100110010101011001100110011001100110100110101001100110011001100110011001100110011001100110011001100110011001100110011001100110011001100110011010101001101001011001100101010101100110101001011001100110011001100110101001010110011001100110010110011001010110011001100110011001100110011001011001100101011010100101100110010110101001101001011001101001011001101010011010010110101001010101100110011001101010100110011001100000 */ int dpsk_bpm(char* frame_rawbits, char *frame_bits, int len) { int i; char bit; char bit0; //int err = 0; bit0 = (frame_rawbits[0] & 1) ^ 1; for (i = 0; i < len/2; i++) { if ((frame_rawbits[2*i ] & 1) == 1 && (frame_rawbits[2*i+1] & 1) == 0 ) bit = 1; else if ((frame_rawbits[2*i ] & 1) == 0 && (frame_rawbits[2*i+1] & 1) == 1 ) bit = 0; else { bit = 2; frame_bits[i] = 'x'; bit0 = bit&1; continue; //err = 1; } if (bit0 == bit) frame_bits[i] = '1'; else frame_bits[i] = '0'; // frame_bits[i] = 0x31 ^ (bit0 ^ bit); bit0 = bit; } return bit0; } /* -------------------------------------------------------------------------- */ /* M20 GPS data: Big Endian PTU/ADC data: little endian frame[0x0] = framelen // (0x43,) 0x45 frame[0x1] = 0x20 (type M20) frame[0x02..0x18]: most important data at beginning (incl. counter + M10check) frame[0x02..0x03]: ADC frame[0x04..0x05]: ADC frame[0x06..0x07]: ADC temperature frame[0x08..0x0A]: GPS altitude frame[0x0B..0x0E]: GPS hor.Vel. (velE,velN) frame[0x0F..0x11]: GPS TOW frame[0x15]: counter frame[0x16..0x17]: block check frame[0x18..0x19]: GPS ver.Vel. (velU) frame[0x1A..0x1B]: GPS week frame[0x1C..0x1F]: GPS latitude frame[0x20..0x23]: GPS longitude frame[0x44..0x45]: frame check */ #define stdFLEN 0x43 // pos[0]=0x43 #define pos_GPSTOW 0x0F // 3 byte #define pos_GPSlat 0x1C // 4 byte #define pos_GPSlon 0x20 // 4 byte #define pos_GPSalt 0x08 // 3 byte #define pos_GPSweek 0x1A // 2 byte //Velocity East-North-Up (ENU) #define pos_GPSvE 0x0B // 2 byte #define pos_GPSvN 0x0D // 2 byte #define pos_GPSvU 0x18 // 2 byte #define pos_Cnt 0x15 // 1 byte #define pos_BlkChk 0x16 // 2 byte #define pos_Check (stdFLEN-1) // 2 byte #define len_BlkChk 0x16 // frame[0x02..0x17] , incl. chk16 #define ANSI_COLOR_RESET "\x1b[0m" #define col_GPSTOW "\x1b[38;5;27m" // 3 byte #define col_GPSweek "\x1b[38;5;20m" // 2 byte #define col_GPSdate "\x1b[38;5;94m" //111 #define col_GPSlat "\x1b[38;5;34m" // 4 byte #define col_GPSlon "\x1b[38;5;70m" // 4 byte #define col_GPSalt "\x1b[38;5;82m" // 3 byte #define col_GPSvel "\x1b[38;5;36m" // 6 byte #define col_SN "\x1b[38;5;58m" // 3 byte #define col_Check "\x1b[38;5;11m" // 2 byte #define col_TXT "\x1b[38;5;244m" #define col_FRTXT "\x1b[38;5;244m" #define col_CSok "\x1b[38;5;2m" #define col_CSno "\x1b[38;5;1m" /* -------------------------------------------------------------------------- */ int get_GPSweek() { int i; unsigned byte; ui8_t gpsweek_bytes[2]; int gpsweek; for (i = 0; i < 2; i++) { byte = frame_bytes[pos_GPSweek + i]; gpsweek_bytes[i] = byte; } gpsweek = (gpsweek_bytes[0] << 8) + gpsweek_bytes[1]; datum.week = gpsweek; if (gpsweek < 0 || gpsweek > 3000) return -1; return 0; } //char weekday[7][3] = { "So", "Mo", "Di", "Mi", "Do", "Fr", "Sa"}; char weekday[7][4] = { "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"}; int get_GPStime() { int i; unsigned byte; ui8_t gpstime_bytes[4]; int gpstime, day; for (i = 0; i < 3; i++) { byte = frame_bytes[pos_GPSTOW + i]; gpstime_bytes[i] = byte; } gpstime = 0; for (i = 0; i < 3; i++) { gpstime |= gpstime_bytes[i] << (8*(2-i)); } //gpstime /= 1000; datum.gpssec = gpstime; day = gpstime / (24 * 3600); gpstime %= (24*3600); if ((day < 0) || (day > 6)) return -1; datum.wday = day; datum.std = gpstime/3600; datum.min = (gpstime%3600)/60; datum.sek = gpstime%60; return 0; } int get_GPSpos() { int i; ui8_t bytes[4]; int val; for (i = 0; i < 4; i++) bytes[i] = frame_bytes[pos_GPSlat + i]; val = 0; for (i = 0; i < 4; i++) val |= bytes[i] << (8*(3-i)); datum.lat = val; for (i = 0; i < 4; i++) bytes[i] = frame_bytes[pos_GPSlon + i]; val = 0; for (i = 0; i < 4; i++) val |= bytes[i] << (8*(3-i)); datum.lon = val; for (i = 0; i < 3; i++) bytes[i] = frame_bytes[pos_GPSalt + i]; val = 0; for (i = 0; i < 3; i++) val |= bytes[i] << (8*(2-i)); if (val & 0x800000) val -= 0x1000000; // alt: signed 24bit? datum.alt = val; return 0; } int get_GPSvel() { int i; ui8_t bytes[2]; short vel16; double vx, vy, vz, dir; for (i = 0; i < 2; i++) bytes[i] = frame_bytes[pos_GPSvE + i]; vel16 = bytes[0] << 8 | bytes[1]; datum.vE = vel16; vx = vel16 / 1e2; // east for (i = 0; i < 2; i++) bytes[i] = frame_bytes[pos_GPSvN + i]; vel16 = bytes[0] << 8 | bytes[1]; datum.vN = vel16; vy= vel16 / 1e2; // north for (i = 0; i < 2; i++) bytes[i] = frame_bytes[pos_GPSvU + i]; vel16 = bytes[0] << 8 | bytes[1]; datum.vU = vel16; vz = vel16 / 1e2; // up datum.vH = sqrt(vx*vx+vy*vy); dir = atan2(vx, vy) * 180 / M_PI; if (dir < 0) dir += 360; datum.vD = dir; datum.vV = vz; return 0; } /* -------------------------------------------------------------------------- */ float get_Tntc0(ui8_t *frame, int csOK) { // SMD ntc float Rs = 22.1e3; // P5.6=Vcc float R25 = 2.2e3;// 0.119e3; //2.2e3; float b = 3650.0; // B/Kelvin float T25 = 25.0 + 273.15; // T0=25C, R0=R25=5k // -> Steinhart–Hart coefficients (polyfit): float p0 = 4.42606809e-03, p1 = -6.58184309e-04, p2 = 8.95735557e-05, p3 = -2.84347503e-06; float T = 0.0; // T/Kelvin ui16_t ADC_ntc0; // M10: ADC12 P6.4(A4) float x, R; if (csOK) { ADC_ntc0 = (frame[0x07] << 8) | frame[0x06]; // M10: 0x40,0x3F x = (4095.0 - ADC_ntc0)/ADC_ntc0; // (Vcc-Vout)/Vout R = Rs / x; if (R > 0) T = 1/(1/T25 + 1/b * log(R/R25)); //if (R > 0) T = 1/( p0 + p1*log(R) + p2*log(R)*log(R) + p3*log(R)*log(R)*log(R) ); } return T - 273.15; } /* -------------------------------------------------------------------------- */ /* g : F^n -> F^16 // checksum, linear g(m||b) = f(g(m),b) // update checksum f : F^16 x F^8 -> F^16 linear 010100001000000101000000 001010000100000010100000 000101000010000001010000 000010100001000000101000 000001010000100000010100 100000100000010000001010 000000011010100000000100 100000000101010000000010 000000001000000000000000 000000000100000000000000 000000000010000000000000 000000000001000000000000 000000000000100000000000 000000000000010000000000 000000000000001000000000 000000000000000100000000 */ int update_checkM10(int c, ui8_t b) { int c0, c1, t, t6, t7, s; c1 = c & 0xFF; // B b = (b >> 1) | ((b & 1) << 7); b ^= (b >> 2) & 0xFF; // A1 t6 = ( c & 1) ^ ((c>>2) & 1) ^ ((c>>4) & 1); t7 = ((c>>1) & 1) ^ ((c>>3) & 1) ^ ((c>>5) & 1); t = (c & 0x3F) | (t6 << 6) | (t7 << 7); // A2 s = (c >> 7) & 0xFF; s ^= (s >> 2) & 0xFF; c0 = b ^ t ^ s; return ((c1<<8) | c0) & 0xFFFF; } int checkM10(ui8_t *msg, int len) { int i, cs; // msg[0] = len+1 cs = 0; for (i = 0; i < len; i++) { cs = update_checkM10(cs, msg[i]); } return cs & 0xFFFF; } // checkM10(frame, frame[0]-1) = blk_checkM10(frame[0], frame+1) int blk_checkM10(int len, ui8_t *msg) { int i, cs; ui8_t pre = len & 0xFF; // len(block+chk16) cs = 0; cs = update_checkM10(cs, pre); for (i = 0; i < len-2; i++) { cs = update_checkM10(cs, msg[i]); } return cs & 0xFFFF; } /* -------------------------------------------------------------------------- */ int print_pos(int bcOK, int csOK) { int err; err = 0; err |= get_GPSweek(); err |= get_GPStime(); err |= get_GPSpos(); err |= get_GPSvel(); if (!err) { Gps2Date(datum.week, datum.gpssec, &datum.jahr, &datum.monat, &datum.tag); // counter fprintf(stdout, "[%3d]", frame_bytes[0x15]); if (option_color) { fprintf(stdout, col_TXT); fprintf(stdout, " (W "col_GPSweek"%d"col_TXT") ", datum.week); fprintf(stdout, col_GPSTOW"%s"col_TXT" ", weekday[datum.wday]); fprintf(stdout, col_GPSdate"%04d-%02d-%02d"col_TXT" ("col_GPSTOW"%02d:%02d:%02d"col_TXT") ", datum.jahr, datum.monat, datum.tag, datum.std, datum.min, datum.sek); fprintf(stdout, " lat: "col_GPSlat"%.6f"col_TXT"° ", datum.lat/1e6); fprintf(stdout, " lon: "col_GPSlon"%.6f"col_TXT"° ", datum.lon/1e6); fprintf(stdout, " alt: "col_GPSalt"%.2f"col_TXT"m ", datum.alt/1e2); fprintf(stdout, " vH: "col_GPSvel"%.1f"col_TXT" D: "col_GPSvel"%.1f°"col_TXT" vV: "col_GPSvel"%.1f"col_TXT" ", datum.vH, datum.vD, datum.vV); if (option_verbose >= 1) { fprintf(stdout, " # "); if (bcOK) fprintf(stdout, " "col_CSok"(ok)"col_TXT); else fprintf(stdout, " "col_CSno"(no)"col_TXT); if (csOK) fprintf(stdout, " "col_CSok"[OK]"col_TXT); else fprintf(stdout, " "col_CSno"[NO]"col_TXT); } if (option_verbose >= 2) { float t0 = get_Tntc0(frame_bytes, csOK); if (t0 > -270.0) fprintf(stdout, " (T0:%.1fC)", t0); } fprintf(stdout, ANSI_COLOR_RESET""); } else { fprintf(stdout, " (W %d) ", datum.week); fprintf(stdout, "%s ", weekday[datum.wday]); fprintf(stdout, "%04d-%02d-%02d (%02d:%02d:%02d) ", datum.jahr, datum.monat, datum.tag, datum.std, datum.min, datum.sek); fprintf(stdout, " lat: %.6f ", datum.lat/1e6); fprintf(stdout, " lon: %.6f ", datum.lon/1e6); fprintf(stdout, " alt: %.2f ", datum.alt/1e2); fprintf(stdout, " vH: %.1f D: %.1f° vV: %.1f ", datum.vH, datum.vD, datum.vV); if (option_verbose >= 1) { fprintf(stdout, " # "); if (bcOK) fprintf(stdout, " (ok)"); else fprintf(stdout, " (no)"); if (csOK) fprintf(stdout, " [OK]"); else fprintf(stdout, " [NO]"); } if (option_verbose >= 2) { float t0 = get_Tntc0(frame_bytes, csOK); if (t0 > -270.0) fprintf(stdout, " (T0:%.1fC)", t0); } } fprintf(stdout, "\n"); } return err; } void print_frame(int pos) { int i; ui8_t byte; int cs1, cs2; int bc1, bc2; int flen = stdFLEN; // xxFLEN=0x43 if (option_b < 2) { dpsk_bpm(frame_rawbits, frame_bits, RAWBITFRAME_LEN+RAWBITAUX_LEN); } bits2bytes(frame_bits, frame_bytes); flen = frame_bytes[0]; if (flen == stdFLEN) auxlen = 0; else { auxlen = flen - stdFLEN; if (auxlen < 0 || auxlen > AUX_LEN) auxlen = 0; } cs1 = (frame_bytes[pos_Check+auxlen] << 8) | frame_bytes[pos_Check+auxlen+1]; cs2 = checkM10(frame_bytes, pos_Check+auxlen); bc1 = (frame_bytes[pos_BlkChk] << 8) | frame_bytes[pos_BlkChk+1]; bc2 = blk_checkM10(len_BlkChk, frame_bytes+2); // len(essentialBlock+chk16) = 0x16 if (option_raw) { if (option_color /*&& frame_bytes[1] != 0x49*/) { fprintf(stdout, col_FRTXT); for (i = 0; i < FRAME_LEN+auxlen; i++) { byte = frame_bytes[i]; if ((i >= pos_GPSTOW) && (i < pos_GPSTOW+3)) fprintf(stdout, col_GPSTOW); if ((i >= pos_GPSlat) && (i < pos_GPSlat+4)) fprintf(stdout, col_GPSlat); if ((i >= pos_GPSlon) && (i < pos_GPSlon+4)) fprintf(stdout, col_GPSlon); if ((i >= pos_GPSalt) && (i < pos_GPSalt+3)) fprintf(stdout, col_GPSalt); if ((i >= pos_GPSweek) && (i < pos_GPSweek+2)) fprintf(stdout, col_GPSweek); if ((i >= pos_GPSvE) && (i < pos_GPSvE+2)) fprintf(stdout, col_GPSvel); if ((i >= pos_GPSvN) && (i < pos_GPSvN+2)) fprintf(stdout, col_GPSvel); if ((i >= pos_GPSvU) && (i < pos_GPSvU+2)) fprintf(stdout, col_GPSvel); if ((i >= pos_BlkChk) && (i < pos_BlkChk+2)) fprintf(stdout, col_Check); if ((i >= pos_Check+auxlen) && (i < pos_Check+auxlen+2)) fprintf(stdout, col_Check); fprintf(stdout, "%02x", byte); fprintf(stdout, col_FRTXT); } if (option_verbose) { fprintf(stdout, " # "col_Check"%04x"col_FRTXT, cs2); if (bc1 == bc2) fprintf(stdout, " "col_CSok"(ok)"col_TXT); else fprintf(stdout, " "col_CSno"(no)"col_TXT); if (cs1 == cs2) fprintf(stdout, " "col_CSok"[OK]"col_TXT); else fprintf(stdout, " "col_CSno"[NO]"col_TXT); } fprintf(stdout, ANSI_COLOR_RESET"\n"); } else { for (i = 0; i < FRAME_LEN+auxlen; i++) { byte = frame_bytes[i]; fprintf(stdout, "%02x", byte); } if (option_verbose) { fprintf(stdout, " # %04x", cs2); if (bc1 == bc2) fprintf(stdout, " (ok)"); else fprintf(stdout, " (no)"); if (cs1 == cs2) fprintf(stdout, " [OK]"); else fprintf(stdout, " [NO]"); } fprintf(stdout, "\n"); } } else print_pos(bc1 == bc2, cs1 == cs2); } /* -------------------------------------------------------------------------- */ int main(int argc, char **argv) { FILE *fp; char *fpname; int i, len; int bit, bit0; int pos; int header_found = 0; float baudrate = -1; #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, " -c, --color\n"); //fprintf(stderr, " -o, --offset\n"); return 0; } else if ( (strcmp(*argv, "-v") == 0) || (strcmp(*argv, "--verbose") == 0) ) { option_verbose = 1; } else if ( (strcmp(*argv, "-vv") == 0) ) option_verbose = 2; 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; // nicht noetig } else if ( (strcmp(*argv, "-c") == 0) || (strcmp(*argv, "--color") == 0) ) { option_color = 1; } else if (strcmp(*argv, "--res") == 0) { option_res = 1; } else if (strcmp(*argv, "-b" ) == 0) { option_b = 1; } else if (strcmp(*argv, "-b2") == 0) { option_b = 2; } else if (strcmp(*argv, "--ch2") == 0) { wav_channel = 1; } // right channel (default: 0=left) else if ( (strcmp(*argv, "--br") == 0) ) { ++argv; if (*argv) { baudrate = atof(*argv); if (baudrate < 9000 || baudrate > 10000) baudrate = BAUD_RATE; // default: 9615 } else return -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; } if (baudrate > 0) { samples_per_bit = sample_rate/baudrate; fprintf(stderr, "sps corr: %.4f\n", samples_per_bit); } pos = FRAMESTART; while (!read_bits_fsk(fp, &bit, &len)) { if (len == 0) { // reset_frame(); if (pos > (stdFLEN/2)*2*BITS) { for (i = pos; i < RAWBITFRAME_LEN+RAWBITAUX_LEN; i++) frame_rawbits[i] = 0x30 + 0; print_frame(pos);//byte_count header_found = 0; pos = FRAMESTART; } //inc_bufpos(); //buf[bufpos] = 'x'; continue; // ... } for (i = 0; i < len; i++) { inc_bufpos(); buf[bufpos] = 0x30 + bit; // Ascii if (!header_found) { header_found = compare2(); } else { frame_rawbits[pos] = 0x30 + bit; // Ascii pos++; if (pos == RAWBITFRAME_LEN+RAWBITAUX_LEN) { frame_rawbits[pos] = '\0'; print_frame(pos);//FRAME_LEN header_found = 0; pos = FRAMESTART; } } } if (header_found && option_b==1) { bitstart = 1; while ( pos < RAWBITFRAME_LEN+RAWBITAUX_LEN ) { if (read_rawbit(fp, &bit) == EOF) break; frame_rawbits[pos] = 0x30 + bit; pos++; } frame_rawbits[pos] = '\0'; print_frame(pos); header_found = 0; pos = FRAMESTART; } if (header_found && option_b>=2) { bitstart = 1; bit0 = 0; if (pos%2) { if (read_rawbit(fp, &bit) == EOF) break; frame_rawbits[pos] = 0x30 + bit; pos++; } bit0 = dpsk_bpm(frame_rawbits, frame_bits, pos); pos /= 2; while ( pos < BITFRAME_LEN+BITAUX_LEN ) { if (read_rawbit2(fp, &bit) == EOF) break; frame_bits[pos] = 0x31 ^ (bit0 ^ bit); pos++; bit0 = bit; } frame_bits[pos] = '\0'; print_frame(pos); header_found = 0; pos = FRAMESTART; } } fprintf(stdout, "\n"); fclose(fp); return 0; }