diff --git a/demod/m10dm_dft.c b/demod/m10dm_dft.c new file mode 100644 index 0000000..70a842c --- /dev/null +++ b/demod/m10dm_dft.c @@ -0,0 +1,945 @@ + +/* + * m10 + * sync header: correlation/matched filter + * files: m10dm_dft.c demod_dft.h demod_dft.c + * compile: + * gcc -c demod_dft.c + * gcc m10dm_dft.c demod_dft.o -lm -o m10dm_dft + * + * author: zilog80 + */ + +#include +#include +#include +#include + +#ifdef CYGWIN + #include // cygwin: _setmode() + #include +#endif + + +typedef unsigned char ui8_t; +typedef unsigned short ui16_t; +typedef unsigned int ui32_t; + +//#include "demod_dft.c" +#include "demod_dft.h" + + +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; + double vx; double vy; double vD2; + char SN[12]; +} 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_color = 0, + option_ptu = 0, + option_dc = 0, + wavloaded = 0; + +/* -------------------------------------------------------------------------- */ +/* + * 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; +} +/* -------------------------------------------------------------------------- */ + +/* + 9600 baud -> 9616 baud ? +*/ +#define BAUD_RATE 9616 + +/* -------------------------------------------------------------------------- */ + +/* +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"; // M??: 76 9F 20 + //"011001000100100100001001"; // M10-dop: 64 49 09 +char rawheader[] = "10011001100110010100110010011001"; + +#define FRAME_LEN 102 +#define BITFRAME_LEN (FRAME_LEN*BITS) + +ui8_t frame_bytes[FRAME_LEN+10]; + +char frame_bits[BITFRAME_LEN+4]; + + +int bits2bytes(char *bitstr, ui8_t *bytes) { + int i, bit, d, byteval; + int bitpos, bytepos; + + bitpos = 0; + bytepos = 0; + + while (bytepos < FRAME_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) bytes[bytepos++] = 0; + + return 0; +} + +/* -------------------------------------------------------------------------- */ + +#define pos_GPSTOW 0x0A // 4 byte +#define pos_GPSlat 0x0E // 4 byte +#define pos_GPSlon 0x12 // 4 byte +#define pos_GPSalt 0x16 // 4 byte +#define pos_GPSweek 0x20 // 2 byte +//Velocity East-North-Up (ENU) +#define pos_GPSvO 0x04 // 2 byte +#define pos_GPSvN 0x06 // 2 byte +#define pos_GPSvV 0x08 // 2 byte +#define pos_SN 0x5D // 2+3 byte +#define pos_Check 0x63 // 2 byte + + +#define ANSI_COLOR_RED "\x1b[31m" +#define ANSI_COLOR_GREEN "\x1b[32m" +#define ANSI_COLOR_YELLOW "\x1b[33m" +#define ANSI_COLOR_BLUE "\x1b[34m" +#define ANSI_COLOR_MAGENTA "\x1b[35m" +#define ANSI_COLOR_CYAN "\x1b[36m" +#define ANSI_COLOR_RESET "\x1b[0m" + +#define XTERM_COLOR_BROWN "\x1b[38;5;94m" // 38;5;{0..255}m + +#define col_GPSweek "\x1b[38;5;20m" // 2 byte +#define col_GPSTOW "\x1b[38;5;27m" // 4 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" // 4 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" + +/* +$ for code in {0..255} +> do echo -e "\e[38;5;${code}m"'\\e[38;5;'"$code"m"\e[0m" +> done +*/ + +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"}; + +int get_GPStime() { + int i; + unsigned byte; + ui8_t gpstime_bytes[4]; + int gpstime, day; // int ms; + + for (i = 0; i < 4; i++) { + byte = frame_bytes[pos_GPSTOW + i]; + gpstime_bytes[i] = byte; + } + + gpstime = 0; + for (i = 0; i < 4; i++) { + gpstime |= gpstime_bytes[i] << (8*(3-i)); + } + + //ms = gpstime % 1000; + 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; +} + +double B60B60 = 0xB60B60; // 2^32/360 = 0xB60B60.xxx + +int get_GPSlat() { + int i; + unsigned byte; + ui8_t gpslat_bytes[4]; + int gpslat; + double lat; + + for (i = 0; i < 4; i++) { + byte = frame_bytes[pos_GPSlat + i]; + gpslat_bytes[i] = byte; + } + + gpslat = 0; + for (i = 0; i < 4; i++) { + gpslat |= gpslat_bytes[i] << (8*(3-i)); + } + lat = gpslat / B60B60; + datum.lat = lat; + + return 0; +} + +int get_GPSlon() { + int i; + unsigned byte; + ui8_t gpslon_bytes[4]; + int gpslon; + double lon; + + for (i = 0; i < 4; i++) { + byte = frame_bytes[pos_GPSlon + i]; + gpslon_bytes[i] = byte; + } + + gpslon = 0; + for (i = 0; i < 4; i++) { + gpslon |= gpslon_bytes[i] << (8*(3-i)); + } + lon = gpslon / B60B60; + datum.lon = lon; + + return 0; +} + +int get_GPSalt() { + int i; + unsigned byte; + ui8_t gpsalt_bytes[4]; + int gpsalt; + double alt; + + for (i = 0; i < 4; i++) { + byte = frame_bytes[pos_GPSalt + i]; + gpsalt_bytes[i] = byte; + } + + gpsalt = 0; + for (i = 0; i < 4; i++) { + gpsalt |= gpsalt_bytes[i] << (8*(3-i)); + } + alt = gpsalt / 1000.0; + datum.alt = alt; + + return 0; +} + +int get_GPSvel() { + int i; + unsigned byte; + ui8_t gpsVel_bytes[2]; + short vel16; + double vx, vy, dir, alpha; + const double ms2kn100 = 2e2; // m/s -> knots: 1 m/s = 3.6/1.852 kn = 1.94 kn + + for (i = 0; i < 2; i++) { + byte = frame_bytes[pos_GPSvO + i]; + gpsVel_bytes[i] = byte; + } + vel16 = gpsVel_bytes[0] << 8 | gpsVel_bytes[1]; + vx = vel16 / ms2kn100; // ost + + for (i = 0; i < 2; i++) { + byte = frame_bytes[pos_GPSvN + i]; + gpsVel_bytes[i] = byte; + } + vel16 = gpsVel_bytes[0] << 8 | gpsVel_bytes[1]; + vy= vel16 / ms2kn100; // nord + + datum.vx = vx; + datum.vy = vy; + datum.vH = sqrt(vx*vx+vy*vy); +///* + alpha = atan2(vy, vx)*180/M_PI; // ComplexPlane (von x-Achse nach links) - GeoMeteo (von y-Achse nach rechts) + dir = 90-alpha; // z=x+iy= -> i*conj(z)=y+ix=re(i(pi/2-t)), Achsen und Drehsinn vertauscht + if (dir < 0) dir += 360; // atan2(y,x)=atan(y/x)=pi/2-atan(x/y) , atan(1/t) = pi/2 - atan(t) + datum.vD2 = dir; +//*/ + dir = atan2(vx, vy) * 180 / M_PI; + if (dir < 0) dir += 360; + datum.vD = dir; + + for (i = 0; i < 2; i++) { + byte = frame_bytes[pos_GPSvV + i]; + gpsVel_bytes[i] = byte; + } + vel16 = gpsVel_bytes[0] << 8 | gpsVel_bytes[1]; + datum.vV = vel16 / ms2kn100; + + return 0; +} + +int get_SN() { + int i; + unsigned byte; + ui8_t sn_bytes[5]; + + for (i = 0; i < 11; i++) datum.SN[i] = ' '; datum.SN[11] = '\0'; + + for (i = 0; i < 5; i++) { + byte = frame_bytes[pos_SN + i]; + sn_bytes[i] = byte; + } + + byte = sn_bytes[2]; + sprintf(datum.SN, "%1X%02u", (byte>>4)&0xF, byte&0xF); + byte = sn_bytes[3] | (sn_bytes[4]<<8); + sprintf(datum.SN+3, " %1X %1u%04u", sn_bytes[0]&0xF, (byte>>13)&0x7, byte&0x1FFF); + + return 0; +} + +/* -------------------------------------------------------------------------- */ +/* +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; + + cs = 0; + for (i = 0; i < len; i++) { + cs = update_checkM10(cs, msg[i]); + } + + return cs & 0xFFFF; +} + +/* -------------------------------------------------------------------------- */ + +// Temperatur Sensor +// NTC-Thermistor Shibaura PB5-41E +// +float get_Temp(int csOK) { +// NTC-Thermistor Shibaura PB5-41E +// T00 = 273.15 + 0.0 , R00 = 15e3 +// T25 = 273.15 + 25.0 , R25 = 5.369e3 +// B00 = 3450.0 Kelvin // 0C..100C, poor fit low temps +// [ T/C , R/1e3 ] ( [P__-43]/2.0 ): +// [ -50.0 , 204.0 ] +// [ -45.0 , 150.7 ] +// [ -40.0 , 112.6 ] +// [ -35.0 , 84.90 ] +// [ -30.0 , 64.65 ] +// [ -25.0 , 49.66 ] +// [ -20.0 , 38.48 ] +// [ -15.0 , 30.06 ] +// [ -10.0 , 23.67 ] +// [ -5.0 , 18.78 ] +// [ 0.0 , 15.00 ] +// [ 5.0 , 12.06 ] +// [ 10.0 , 9.765 ] +// [ 15.0 , 7.955 ] +// [ 20.0 , 6.515 ] +// [ 25.0 , 5.370 ] +// [ 30.0 , 4.448 ] +// [ 35.0 , 3.704 ] +// [ 40.0 , 3.100 ] +// -> Steinhart–Hart coefficients (polyfit): + float p0 = 1.07303516e-03, + p1 = 2.41296733e-04, + p2 = 2.26744154e-06, + p3 = 6.52855181e-08; +// T/K = 1/( p0 + p1*ln(R) + p2*ln(R)^2 + p3*ln(R)^3 ) + + // range/scale 0, 1, 2: // M10-pcb + float Rs[3] = { 12.1e3 , 36.5e3 , 475.0e3 }; // bias/series + float Rp[3] = { 1e20 , 330.0e3 , 3000.0e3 }; // parallel, Rp[0]=inf + + ui8_t scT; // {0,1,2}, range/scale voltage divider + ui16_t ADC_RT; // ADC12 P6.7(A7) , adr_0377h,adr_0376h + ui16_t Tcal[2]; // adr_1000h[scT*4] + + float adc_max = 4095.0; // ADC12 + float x, R; + float T = 0; // T/Kelvin + + scT = frame_bytes[0x3E]; // adr_0455h + ADC_RT = (frame_bytes[0x40] << 8) | frame_bytes[0x3F]; + ADC_RT -= 0xA000; + Tcal[0] = (frame_bytes[0x42] << 8) | frame_bytes[0x41]; + Tcal[1] = (frame_bytes[0x44] << 8) | frame_bytes[0x43]; + + x = (adc_max-ADC_RT)/ADC_RT; // (Vcc-Vout)/Vout + if (scT < 3) R = Rs[scT] /( x - Rs[scT]/Rp[scT] ); + else R = -1; + + if (R > 0) T = 1/( p0 + p1*log(R) + p2*log(R)*log(R) + p3*log(R)*log(R)*log(R) ); + + if (option_verbose >= 3 && csOK) { // on-chip temperature + ui16_t ADC_Ti_raw = (frame_bytes[0x49] << 8) | frame_bytes[0x48]; // int.temp.diode, ref: 4095->1.5V + float vti, ti; + // INCH1A (temp.diode), slau144 + vti = ADC_Ti_raw/4095.0 * 1.5; // V_REF+ = 1.5V, no calibration + ti = (vti-0.986)/0.00355; // 0.986/0.00355=277.75, 1.5/4095/0.00355=0.1032 + fprintf(stdout, " (Ti:%.1fC)", ti); + // SegmentA-Calibration: + //ui16_t T30 = adr_10e2h; // CAL_ADC_15T30 + //ui16_t T85 = adr_10e4h; // CAL_ADC_15T85 + //float tic = (ADC_Ti_raw-T30)*(85.0-30.0)/(T85-T30) + 30.0; + //fprintf(stdout, " (Tic:%.1fC)", tic); + } + + return T - 273.15; // Celsius +} +/* +frame[0x32]: adr_1074h +frame[0x33]: adr_1075h +frame[0x34]: adr_1076h + +frame[0x35..0x37]: TBCCR1 ; relHumCap-freq + +frame[0x38]: adr_1078h +frame[0x39]: adr_1079h +frame[0x3A]: adr_1077h +frame[0x3B]: adr_100Ch +frame[0x3C..3D]: 0 + + +frame[0x3E]: scale_index ; scale/range-index +frame[0x3F..40] = ADC12_A7 | 0xA000, V_R+=AVcc ; Thermistor + +frame[0x41]: adr_1000h[scale_index*4] +frame[0x42]: adr_1000h[scale_index*4+1] +frame[0x43]: adr_1000h[scale_index*4+2] +frame[0x44]: adr_1000h[scale_index*4+3] + +frame[0x45..46]: ADC12_A5/4, V_R+=2.5V +frame[0x47]: ADC12_A2/16 , V_R+=2.5V +frame[0x48..49]: ADC12_iT, V_R+=1.5V (int.Temp.diode) +frame[0x4C..4D]: ADC12_A6, V_R+=2.5V +frame[0x4E..4F]: ADC12_A3, V_R+=AVcc +frame[0x50..54]: 0; +frame[0x55..56]: ADC12_A1, V_R+=AVcc +frame[0x57..58]: ADC12_A0, V_R+=AVcc +frame[0x59..5A]: ADC12_A4, V_R+=AVcc // ntc2: R(25C)=2.2k, Rs=22.1e3 (relHumCap-Temp) + +frame[0x5B]: +frame[0x5C]: adr_108Eh + + +frame[0x5D]: adr_1082h (SN) +frame[0x5E]: adr_1083h (SN) +frame[0x5F]: adr_1084h (SN) +frame[0x60]: adr_1080h (SN) +frame[0x61]: adr_1081h (SN) +*/ +float get_Tntc2(int csOK) { +// SMD ntc + float Rs = 22.1e3; // P5.6=Vcc +// float R25 = 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_ntc2; // ADC12 P6.4(A4) + float x, R; + if (csOK) + { + ADC_ntc2 = (frame_bytes[0x5A] << 8) | frame_bytes[0x59]; + x = (4095.0 - ADC_ntc2)/ADC_ntc2; // (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; +} + +// Humidity Sensor +// U.P.S.I. +// +#define FREQ_CAPCLK (8e6/2) // 8 MHz XT2 crystal, InputDivider IDx=01 (/2) +#define LN2 0.693147181 +#define ADR_108A 1000.0 // 0x3E8=1000 + +float get_count_RH() { // capture 1000 rising edges + ui32_t TBCCR1_1000 = frame_bytes[0x35] | (frame_bytes[0x36]<<8) | (frame_bytes[0x37]<<16); + return TBCCR1_1000 / ADR_108A; +} +float get_TLC555freq() { + return FREQ_CAPCLK / get_count_RH(); +} +/* +double get_C_RH() { // TLC555 astable: R_A=3.65k, R_B=338k + double R_B = 338e3; + double R_A = 3.65e3; + double C_RH = 1/get_TLC555freq() / (LN2 * (R_A + 2*R_B)); + return C_RH; +} +double get_RH(int csOK) { +// U.P.S.I. +// C_RH/C_55 = 0.8955 + 0.002*RH , T=20C +// C_RH = C_RH(RH,T) , RH = RH(C_RH,T) +// C_RH/C_55 approx.eq. count_RH/count_ref +// c55=270pF? diff=C_55-c55, T=20C + ui32_t c = frame_bytes[0x32] | (frame_bytes[0x33]<<8) | (frame_bytes[0x34]<<16); // CalRef 55%RH , T=20C ? + double count_ref = c / ADR_108A; // CalRef 55%RH , T=20C ? + double C_RH = get_C_RH(); + double T = get_Tntc2(csOK); + return 0; +} +*/ +/* -------------------------------------------------------------------------- */ + +int print_pos(int csOK) { + int err; + + err = 0; + err |= get_GPSweek(); + err |= get_GPStime(); + err |= get_GPSlat(); + err |= get_GPSlon(); + err |= get_GPSalt(); + + if (!err) { + + Gps2Date(datum.week, datum.gpssec, &datum.jahr, &datum.monat, &datum.tag); + + 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); + fprintf(stdout, " lon: "col_GPSlon"%.6f"col_TXT" ", datum.lon); + fprintf(stdout, " alt: "col_GPSalt"%.2f"col_TXT" ", datum.alt); + if (option_verbose) { + err |= get_GPSvel(); + if (!err) { + //if (option_verbose == 2) fprintf(stdout, " "col_GPSvel"(%.1f , %.1f : %.1f°)"col_TXT" ", datum.vx, datum.vy, datum.vD2); + 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 >= 2) { + get_SN(); + fprintf(stdout, " SN: "col_SN"%s"col_TXT, datum.SN); + } + if (option_verbose >= 2) { + fprintf(stdout, " # "); + if (csOK) fprintf(stdout, " "col_CSok"[OK]"col_TXT); + else fprintf(stdout, " "col_CSno"[NO]"col_TXT); + } + } + if (option_ptu) { + float t = get_Temp(csOK); + if (t > -270.0) fprintf(stdout, " T=%.1fC ", t); + if (option_verbose >= 3) { + float t2 = get_Tntc2(csOK); + float fq555 = get_TLC555freq(); + if (t2 > -270.0) fprintf(stdout, " (T2:%.1fC) (%.3fkHz) ", t2, fq555/1e3); + } + } + 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); + fprintf(stdout, " lon: %.6f ", datum.lon); + fprintf(stdout, " alt: %.2f ", datum.alt); + if (option_verbose) { + err |= get_GPSvel(); + if (!err) { + //if (option_verbose == 2) fprintf(stdout, " (%.1f , %.1f : %.1f°) ", datum.vx, datum.vy, datum.vD2); + fprintf(stdout, " vH: %.1f D: %.1f° vV: %.1f ", datum.vH, datum.vD, datum.vV); + } + if (option_verbose >= 2) { + get_SN(); + fprintf(stdout, " SN: %s", datum.SN); + } + if (option_verbose >= 2) { + fprintf(stdout, " # "); + if (csOK) fprintf(stdout, " [OK]"); else fprintf(stdout, " [NO]"); + } + } + if (option_ptu) { + float t = get_Temp(csOK); + if (t > -270.0) fprintf(stdout, " T=%.1fC ", t); + if (option_verbose >= 3) { + float t2 = get_Tntc2(csOK); + float fq555 = get_TLC555freq(); + if (t2 > -270.0) fprintf(stdout, " (T2:%.1fC) (%.3fkHz) ", t2, fq555/1e3); + } + } + } + fprintf(stdout, "\n"); + + } + + return err; +} + +int print_frame(int pos) { + int i; + ui8_t byte; + int cs1, cs2; + + bits2bytes(frame_bits, frame_bytes); + + cs1 = (frame_bytes[pos_Check] << 8) | frame_bytes[pos_Check+1]; + cs2 = checkM10(frame_bytes, pos_Check); + + if (option_raw) { + + if (option_color && frame_bytes[1] != 0x49) { + fprintf(stdout, col_FRTXT); + for (i = 0; i < FRAME_LEN-1; i++) { + byte = frame_bytes[i]; + if ((i >= pos_GPSTOW) && (i < pos_GPSTOW+4)) 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+4)) fprintf(stdout, col_GPSalt); + if ((i >= pos_GPSweek) && (i < pos_GPSweek+2)) fprintf(stdout, col_GPSweek); + if ((i >= pos_GPSvO) && (i < pos_GPSvO+6)) fprintf(stdout, col_GPSvel); + if ((i >= pos_SN) && (i < pos_SN+5)) fprintf(stdout, col_SN); + if ((i >= pos_Check) && (i < pos_Check+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 (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-1; i++) { + byte = frame_bytes[i]; + fprintf(stdout, "%02x", byte); + } + if (option_verbose) { + fprintf(stdout, " # %04x", cs2); + if (cs1 == cs2) fprintf(stdout, " [OK]"); else fprintf(stdout, " [NO]"); + } + fprintf(stdout, "\n"); + } + + } + else if (frame_bytes[1] == 0x49) { + if (option_verbose == 3) { + for (i = 0; i < FRAME_LEN-1; i++) { + byte = frame_bytes[i]; + fprintf(stdout, "%02x", byte); + } + fprintf(stdout, "\n"); + } + } + else print_pos(cs1 == cs2); + + return (frame_bytes[0]<<8)|frame_bytes[1]; +} + + +int main(int argc, char **argv) { + + FILE *fp = NULL; + char *fpname = NULL; + float spb = 0.0; + int header_found = 0; + + int bit, bit0; + int bitpos = 0; + int bitQ; + int pos; + int herrs, herr1; + int headerlen = 0; + + int k,K; + float mv; + unsigned int mv_pos, mv0_pos; + int mp = 0; + + float thres = 0.76; + + int bitofs = 0; + int symlen = 2; + + +#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"); + 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, "-vvv") == 0) ) option_verbose = 3; + 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, "--ptu") == 0) ) { + option_ptu = 1; + } + else if ( (strcmp(*argv, "--dc") == 0) ) { + option_dc = 1; + } + else if (strcmp(*argv, "--ths") == 0) { + ++argv; + if (*argv) { + thres = atof(*argv); + } + 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; + + + spb = read_wav_header(fp, (float)BAUD_RATE); + if ( spb < 0 ) { + fclose(fp); + fprintf(stderr, "error: wav header\n"); + return -1; + } + if ( spb < 8 ) { + fprintf(stderr, "note: sample rate low\n"); + } + + + symlen = 2; + headerlen = strlen(rawheader); + bitofs = 1; // +1 .. +2 + K = init_buffers(rawheader, headerlen, 1); // shape=0 (alt. shape=1) + if ( K < 0 ) { + fprintf(stderr, "error: init buffers\n"); + return -1; + }; + + + k = 0; + mv = -1; mv_pos = 0; + + while ( f32buf_sample(fp, option_inv, 1) != EOF ) { + + k += 1; + if (k >= K-4) { + mv0_pos = mv_pos; + mp = getCorrDFT(-1, K, 0, &mv, &mv_pos); + k = 0; + } + else { + mv = 0.0; + continue; + } + + if (mp > 0 && (mv > thres || mv < -thres)) { + if (mv_pos > mv0_pos) { + + header_found = 0; + herrs = headcmp(1, rawheader, headerlen, mv_pos, mv<0, option_dc); // (symlen=2) + herr1 = 0; + if (herrs <= 3 && herrs > 0) { + herr1 = headcmp(symlen, rawheader, headerlen, mv_pos+1, mv<0, option_dc); + if (herr1 < herrs) { + herrs = herr1; + herr1 = 1; + } + } + if (herrs <= 1) header_found = 1; // herrs <= 1 bitfehler in header + + if (header_found) { + + bitpos = 0; + pos = 0; + pos /= 2; + bit0 = '0'; + + while ( pos < BITFRAME_LEN ) { + header_found = !(pos>=BITFRAME_LEN-10); + bitQ = read_sbit(fp, symlen, &bit, option_inv, bitofs, bitpos==0, !header_found); // symlen=2, return: zeroX/bit + if (bitQ == EOF) { break; } + frame_bits[pos] = 0x31 ^ (bit0 ^ bit); + pos++; + bit0 = bit; + bitpos += 1; + } + frame_bits[pos] = '\0'; + print_frame(pos); + if (pos < BITFRAME_LEN) break; + + header_found = 0; + + // bis Ende der Sekunde vorspulen; allerdings Doppel-Frame alle 10 sek + if (option_verbose < 3) { // && (regulare frame) // print_frame-return? + while ( bitpos < 5*BITFRAME_LEN ) { + bitQ = read_sbit(fp, symlen, &bit, option_inv, bitofs, bitpos==0, 0); // symlen=2, return: zeroX/bit + if ( bitQ == EOF) break; + bitpos++; + } + } + + pos = 0; + } + } + } + + } + + + free_buffers(); + + fclose(fp); + + return 0; +} +