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radiosonde_auto_rx/demod/dfm09dm_dft.c

933 wiersze
27 KiB
C
Czysty Wina Historia

/*
* dfm09 (dfm06)
* sync header: correlation/matched filter
* files: dfm09dm_dft.c demod_dft.h demod_dft.c
* compile:
* gcc -c demod_dft.c
* gcc dfm09dm_dft.c demod_dft.o -lm -o dfm09dm_dft
*
* author: zilog80
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#ifdef CYGWIN
#include <fcntl.h> // cygwin: _setmode()
#include <io.h>
#endif
typedef unsigned char ui8_t;
typedef unsigned int ui32_t;
//#include "demod_dft.c"
#include "demod_dft.h"
typedef struct {
int frnr;
int sonde_typ;
ui32_t SN6;
ui32_t SN;
int week; int gpssec;
int jahr; int monat; int tag;
int std; int min; float sek;
double lat; double lon; double alt;
double dir; double horiV; double vertV;
float meas24[5];
float status[2];
float _frmcnt;
char sonde_id[16];
} gpx_t;
gpx_t gpx;
typedef struct {
int ec;
float ts;
} pcksts_t;
pcksts_t pck[9];
char dat_str[9][13+1];
// JSON Buffer to store sonde ID
char json_sonde_id[] = "DFMxx-xxxxxxxxyy";
int option_verbose = 0, // ausfuehrliche Anzeige
option_raw = 0, // rohe Frames
option_inv = 0, // invertiert Signal
option_auto = 0,
option_dist = 0, // continuous pcks 0..8
option_ecc = 0,
option_ptu = 0,
option_ths = 0,
option_json = 0, // JSON blob output (for auto_rx)
wavloaded = 0;
int wav_channel = 0; // audio channel: left
int ptu_out = 0;
int start = 0;
//#define HEADLEN 32
// DFM09: Manchester2: 01->1,10->0
char rawheader[] = "10011010100110010101101001010101"; //->"0100010111001111"; // 0x45CF (big endian)
#define BITFRAME_LEN 280
char frame_bits[BITFRAME_LEN+4] = "0100010111001111";
/* ------------------------------------------------------------------------------------ */
#define BAUD_RATE 2500
/* ------------------------------------------------------------------------------------ */
#define B 8 // codeword: 8 bit
#define S 4 // davon 4 bit data
#define HEAD 0 // 16 bit
#define CONF (16+0) // 56 bit
#define DAT1 (16+56) // 104 bit
#define DAT2 (16+160) // 104 bit
// frame: 280 bit
ui8_t H[4][8] = // Parity-Check
{{ 0, 1, 1, 1, 1, 0, 0, 0},
{ 1, 0, 1, 1, 0, 1, 0, 0},
{ 1, 1, 0, 1, 0, 0, 1, 0},
{ 1, 1, 1, 0, 0, 0, 0, 1}};
ui8_t He[8] = { 0x7, 0xB, 0xD, 0xE, 0x8, 0x4, 0x2, 0x1}; // Spalten von H:
// 1-bit-error-Syndrome
ui8_t hamming_conf[ 7*B]; // 7*8=56
ui8_t hamming_dat1[13*B]; // 13*8=104
ui8_t hamming_dat2[13*B];
ui8_t block_conf[ 7*S]; // 7*4=28
ui8_t block_dat1[13*S]; // 13*4=52
ui8_t block_dat2[13*S];
ui32_t bits2val(ui8_t *bits, int len) { // big endian
int j;
ui32_t val;
if ((len < 0) || (len > 32)) return -1; // = 0xFFFF
val = 0;
for (j = 0; j < len; j++) {
val |= (bits[j] << (len-1-j));
}
return val;
}
void deinterleave(char *str, int L, ui8_t *block) {
int i, j;
for (j = 0; j < B; j++) { // L = 7, 13
for (i = 0; i < L; i++) {
if (str[L*j+i] >= 0x30 && str[L*j+i] <= 0x31) {
block[B*i+j] = str[L*j+i] - 0x30; // ASCII -> bit
}
}
}
}
int check(ui8_t code[8]) {
int i, j; // Bei Demodulierung durch Nulldurchgaenge, wenn durch Fehler ausser Takt,
ui32_t synval = 0; // verschieben sich die bits. Fuer Hamming-Decode waere es besser,
ui8_t syndrom[4]; // sync zu Beginn mit Header und dann Takt beibehalten fuer decision.
int ret=0;
for (i = 0; i < 4; i++) { // S = 4
syndrom[i] = 0;
for (j = 0; j < 8; j++) { // B = 8
syndrom[i] ^= H[i][j] & code[j];
}
}
synval = bits2val(syndrom, 4);
if (synval) {
ret = -1;
for (j = 0; j < 8; j++) { // 1-bit-error
if (synval == He[j]) { // reicht auf databits zu pruefen, d.h.
ret = j+1; // (systematischer Code) He[0..3]
break;
}
}
}
else ret = 0;
if (ret > 0) code[ret-1] ^= 0x1;
return ret;
}
int hamming(ui8_t *ham, int L, ui8_t *sym) {
int i, j;
int ecc = 0, ret = 0; // L = 7, 13
for (i = 0; i < L; i++) { // L * 2 nibble (data+parity)
if (option_ecc) {
ecc = check(ham+B*i);
if (ecc > 0) ret |= (1<<i);
if (ecc < 0) ret |= ecc; // -1
}
for (j = 0; j < S; j++) { // systematic: bits 0..S-1 data
sym[S*i+j] = ham[B*i+j];
}
}
return ret;
}
char nib2chr(ui8_t nib) {
char c = '_';
if (nib < 0x10) {
if (nib < 0xA) c = 0x30 + nib;
else c = 0x41 + nib-0xA;
}
return c;
}
int dat_out(ui8_t *dat_bits, int ec) {
int i, ret = 0;
static int fr_id;
// int jahr = 0, monat = 0, tag = 0, std = 0, min = 0;
int frnr = 0;
int msek = 0;
int lat = 0, lon = 0, alt = 0;
int nib;
int dvv; // signed/unsigned 16bit
fr_id = bits2val(dat_bits+48, 4);
if (fr_id >= 0 && fr_id <= 8) {
for (i = 0; i < 13; i++) {
nib = bits2val(dat_bits+4*i, 4);
dat_str[fr_id][i] = nib2chr(nib);
}
dat_str[fr_id][13] = '\0';
pck[fr_id].ts = gpx._frmcnt; // time_stamp,frame_count,...
if (option_ecc) {
pck[fr_id].ec = ec; // option_ecc laesst -1 garnicht durch
if (ec > 0) {
ui8_t ecn = 0;
for (i = 0; i < 15; i++) {
if ( (ec>>i)&1 ) ecn++;
}
pck[fr_id].ec = ecn;
if ((option_dist || option_json) && ecn > 4) pck[fr_id].ec = -2; // threshold: #errors > 4
}
}
}
if (fr_id == 0) {
start = 0x1000;
frnr = bits2val(dat_bits+24, 8);
gpx.frnr = frnr;
}
if (fr_id == 1) {
// 00..31: ? GPS-Sats in Sicht?
msek = bits2val(dat_bits+32, 16); // UTC (= GPS - 18sec ab 1.1.2017)
gpx.sek = msek/1000.0;
}
if (fr_id == 2) {
lat = bits2val(dat_bits, 32);
gpx.lat = lat/1e7;
dvv = (short)bits2val(dat_bits+32, 16); // (short)? zusammen mit dir sollte unsigned sein
gpx.horiV = dvv/1e2;
}
if (fr_id == 3) {
lon = bits2val(dat_bits, 32);
gpx.lon = lon/1e7;
dvv = bits2val(dat_bits+32, 16) & 0xFFFF; // unsigned
gpx.dir = dvv/1e2;
}
if (fr_id == 4) {
alt = bits2val(dat_bits, 32);
gpx.alt = alt/1e2;
dvv = (short)bits2val(dat_bits+32, 16); // signed
gpx.vertV = dvv/1e2;
}
if (fr_id == 5) {
}
if (fr_id == 6) { // sat data
}
if (fr_id == 7) { // sat data
}
if (fr_id == 8) {
gpx.jahr = bits2val(dat_bits, 12);
gpx.monat = bits2val(dat_bits+12, 4);
gpx.tag = bits2val(dat_bits+16, 5);
gpx.std = bits2val(dat_bits+21, 5);
gpx.min = bits2val(dat_bits+26, 6);
}
ret = fr_id;
return ret;
}
// DFM-06 (NXP8)
float fl20(int d) { // float20
int val, p;
float f;
p = (d>>16) & 0xF;
val = d & 0xFFFF;
f = val/(float)(1<<p);
return f;
}
/*
float flo20(int d) {
int m, e;
float f1, f;
m = d & 0xFFFF;
e = (d >> 16) & 0xF;
f = m / pow(2,e);
return f;
}
*/
// DFM-09 (STM32)
float fl24(int d) { // float24
int val, p;
float f;
p = (d>>20) & 0xF;
val = d & 0xFFFFF;
f = val/(float)(1<<p);
return f;
}
// temperature approximation
float get_Temp(float *meas) { // meas[0..4]
// NTC-Thermistor EPCOS B57540G0502
// R/T No 8402, R25=Ro=5k
// B0/100=3450
// 1/T = 1/To + 1/B log(r) , r=R/Ro
// GRAW calibration data -80C..+40C on EEPROM ?
// meas0 = g*(R + Rs)
// meas3 = g*Rs , Rs: dfm6:10k, dfm9:20k
// meas4 = g*Rf , Rf=220k
float B0 = 3260.0; // B/Kelvin, fit -55C..+40C
float T0 = 25 + 273.15; // t0=25C
float R0 = 5.0e3; // R0=R25=5k
float Rf = 220e3; // Rf = 220k
float g = meas[4]/Rf;
float R = (meas[0]-meas[3]) / g; // meas[0,3,4] > 0 ?
float T = 0; // T/Kelvin
if (meas[0]*meas[3]*meas[4] == 0) R = 0;
if (R > 0) T = 1/(1/T0 + 1/B0 * log(R/R0));
return T - 273.15; // Celsius
// DFM-06: meas20 * 16 = meas24
// -> (meas24[0]-meas24[3])/meas24[4]=(meas20[0]-meas20[3])/meas20[4]
}
float get_Temp2(float *meas) { // meas[0..4]
// NTC-Thermistor EPCOS B57540G0502
// R/T No 8402, R25=Ro=5k
// B0/100=3450
// 1/T = 1/To + 1/B log(r) , r=R/Ro
// GRAW calibration data -80C..+40C on EEPROM ?
// meas0 = g*(R+Rs)+ofs
// meas3 = g*Rs+ofs , Rs: dfm6:10k, dfm9:20k
// meas4 = g*Rf+ofs , Rf=220k
float f = meas[0],
f1 = meas[3],
f2 = meas[4];
float B0 = 3260.0; // B/Kelvin, fit -55C..+40C
float T0 = 25 + 273.15; // t0=25C
float R0 = 5.0e3; // R0=R25=5k
float Rf2 = 220e3; // Rf2 = Rf = 220k
float g_o = f2/Rf2; // approx gain
float Rs_o = f1/g_o; // = Rf2 * f1/f2;
float Rf1 = Rs_o; // Rf1 = Rs: dfm6:10k, dfm9:20k
float g = g_o; // gain
float Rb = 0.0; // offset
float R = 0; // thermistor
float T = 0; // T/Kelvin
if ( 8e3 < Rs_o && Rs_o < 12e3) Rf1 = 10e3; // dfm6
else if (18e3 < Rs_o && Rs_o < 22e3) Rf1 = 20e3; // dfm9
g = (f2 - f1) / (Rf2 - Rf1);
Rb = (f1*Rf2-f2*Rf1)/(f2-f1); // ofs/g
R = (f-f1)/g; // meas[0,3,4] > 0 ?
if (R > 0) T = 1/(1/T0 + 1/B0 * log(R/R0));
if (option_ptu && ptu_out && option_verbose == 3) {
printf(" (Rso: %.1f , Rb: %.1f)", Rs_o/1e3, Rb/1e3);
}
return T - 273.15;
// DFM-06: meas20 * 16 = meas24
}
float get_Temp4(float *meas) { // meas[0..4]
// NTC-Thermistor EPCOS B57540G0502
// [ T/C , R/R25 , alpha ] :
// [ -55.0 , 51.991 , 6.4 ]
// [ -50.0 , 37.989 , 6.2 ]
// [ -45.0 , 28.07 , 5.9 ]
// [ -40.0 , 20.96 , 5.7 ]
// [ -35.0 , 15.809 , 5.5 ]
// [ -30.0 , 12.037 , 5.4 ]
// [ -25.0 , 9.2484 , 5.2 ]
// [ -20.0 , 7.1668 , 5.0 ]
// [ -15.0 , 5.5993 , 4.9 ]
// [ -10.0 , 4.4087 , 4.7 ]
// [ -5.0 , 3.4971 , 4.6 ]
// [ 0.0 , 2.7936 , 4.4 ]
// [ 5.0 , 2.2468 , 4.3 ]
// [ 10.0 , 1.8187 , 4.2 ]
// [ 15.0 , 1.4813 , 4.0 ]
// [ 20.0 , 1.2136 , 3.9 ]
// [ 25.0 , 1.0000 , 3.8 ]
// [ 30.0 , 0.82845 , 3.7 ]
// [ 35.0 , 0.68991 , 3.6 ]
// [ 40.0 , 0.57742 , 3.5 ]
// -> Steinhart–Hart coefficients (polyfit):
float p0 = 1.09698417e-03,
p1 = 2.39564629e-04,
p2 = 2.48821437e-06,
p3 = 5.84354921e-08;
// T/K = 1/( p0 + p1*ln(R) + p2*ln(R)^2 + p3*ln(R)^3 )
float Rf = 220e3; // Rf = 220k
float g = meas[4]/Rf;
float R = (meas[0]-meas[3]) / g; // meas[0,3,4] > 0 ?
float T = 0; // T/Kelvin
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; // Celsius
// DFM-06: meas20 * 16 = meas24
// -> (meas24[0]-meas24[3])/meas24[4]=(meas20[0]-meas20[3])/meas20[4]
}
#define SNbit 0x0100
int conf_out(ui8_t *conf_bits, int ec) {
int conf_id;
int ret = 0;
int val, hl;
ui32_t SN6, SN;
static int chAbit, chA[2];
static int chCbit, chC[2];
static int chDbit, chD[2];
static int ch7bit, ch7[2];
static ui32_t SN_A, SN_C, SN_D, SN_7;
conf_id = bits2val(conf_bits, 4);
// gibt es Kanaele > 6 (2-teilige ID)?
// if (conf_id > 6) gpx.SN6 = 0; // -> DFM-09,PS-15 // SNbit?
//
// SN/ID immer im letzten Kanal?
if ((gpx.sonde_typ & 0xF) < 7 && conf_id == 6) {
SN6 = bits2val(conf_bits+4, 4*6); // DFM-06: Kanal 6
if (SN6 == gpx.SN6 && SN6 != 0) { // nur Nibble-Werte 0..9
gpx.sonde_typ = SNbit | 6;
ptu_out = 6;
ret = 6;
sprintf(gpx.sonde_id, "ID06:%6X", gpx.SN6);
sprintf(json_sonde_id, "DFM06-%6X", gpx.SN6);
}
else {
gpx.sonde_typ = 0;
}
gpx.SN6 = SN6;
}
if (conf_id == 0xA) { // 0xACxxxxy , DFM-09
val = bits2val(conf_bits+8, 4*5);
hl = (val & 1); // val&0xF 0,1?
chA[hl] = (val >> 4) & 0xFFFF;
chAbit |= 1 << hl;
if (chAbit == 3) { // DFM-09: Kanal A
SN = (chA[0] << 16) | chA[1];
if ( SN == SN_A ) {
gpx.sonde_typ = SNbit | 0xA;
gpx.SN = SN;
ptu_out = 9;
ret = 9;
sprintf(gpx.sonde_id, "ID09:%6u", gpx.SN);
sprintf(json_sonde_id, "DFM09-%6u", gpx.SN);
}
else {
gpx.sonde_typ = 0;
}
SN_A = SN;
chAbit = 0;
}
}
if (conf_id == 0xC) { // 0xCCxxxxy , DFM-17?
val = bits2val(conf_bits+8, 4*5);
hl = (val & 1);
chC[hl] = (val >> 4) & 0xFFFF;
chCbit |= 1 << hl;
if (chCbit == 3) { // DFM-17? Kanal C
SN = (chC[0] << 16) | chC[1];
if ( SN == SN_C ) {
gpx.sonde_typ = SNbit | 0xC;
gpx.SN = SN;
ptu_out = 9;
ret = 17;
sprintf(gpx.sonde_id, "ID-%1X:%6u", gpx.sonde_typ & 0xF, gpx.SN);
sprintf(json_sonde_id, "DFM17-%6u", gpx.SN);
}
else {
gpx.sonde_typ = 0;
}
SN_C = SN;
chCbit = 0;
}
}
if (conf_id == 0xD) { // 0xDCxxxxy , DFM-17?
val = bits2val(conf_bits+8, 4*5);
hl = (val & 1);
chD[hl] = (val >> 4) & 0xFFFF;
chDbit |= 1 << hl;
if (chDbit == 3) { // DFM-17? Kanal D
SN = (chD[0] << 16) | chD[1];
if ( SN == SN_D ) {
gpx.sonde_typ = SNbit | 0xD;
gpx.SN = SN;
ptu_out = 9;
ret = 18;
sprintf(gpx.sonde_id, "ID-%1X:%6u", gpx.sonde_typ & 0xF, gpx.SN);
sprintf(json_sonde_id, "DFM17-%6u", gpx.SN);
}
else {
gpx.sonde_typ = 0;
}
SN_D = SN;
chDbit = 0;
}
}
if (conf_id == 0x7) { // 0x70xxxxy , pilotsonde PS-15?
val = bits2val(conf_bits+8, 4*5);
hl = (val & 1);
ch7[hl] = (val >> 4) & 0xFFFF;
ch7bit |= 1 << hl;
if (ch7bit == 3) { // PS-15: Kanal 7
SN = (ch7[0] << 16) | ch7[1];
if ( SN == SN_7 ) {
gpx.sonde_typ = SNbit | 0x7;
gpx.SN = SN;
ptu_out = 0;
ret = 15;
sprintf(gpx.sonde_id, "ID15:%6u", gpx.SN);
sprintf(json_sonde_id, "DFM15-%6u", gpx.SN);
}
else {
gpx.sonde_typ = 0;
}
SN_7 = SN;
ch7bit = 0;
}
}
if (conf_id >= 0 && conf_id <= 4) {
val = bits2val(conf_bits+4, 4*6);
gpx.meas24[conf_id] = fl24(val);
// DFM-09 (STM32): 24bit 0exxxxx
// DFM-06 (NXP8): 20bit 0exxxx0
// fl20(bits2val(conf_bits+4, 4*5))
// = fl20(exxxx)
// = fl24(exxxx0)/2^4
// meas20 * 16 = meas24
}
// STM32-status: Bat, MCU-Temp
if ((gpx.sonde_typ & 0xF) == 0xA) { // DFM-09 (STM32)
if (conf_id == 0x5) { // voltage
val = bits2val(conf_bits+8, 4*4);
gpx.status[0] = val/1000.0;
}
if (conf_id == 0x6) { // T-intern (STM32)
val = bits2val(conf_bits+8, 4*4);
gpx.status[1] = val/100.0;
}
}
return ret;
}
void print_gpx() {
int i, j;
int contgps = 0;
int output = 0;
int jsonout = 0;
output |= start;
for (i = 0; i < 9/*8*/; i++) { // trigger: pck8
if ( !( (option_dist || option_json) && pck[i].ec < 0) )
{
if (pck[8].ts - pck[i].ts < 6.0) { output |= (1<<i); }
}
//if (option_dist && pck[i].ec < 0) { output &= ~(1<<i); }
}
jsonout = output;
contgps = ((output & 0x11F) == 0x11F); // 0,1,2,3,8
if (option_dist && !contgps) {
output = 0;
}
if (option_json && !contgps) {
jsonout = 0;
}
if (output & 0xF000) {
if (option_raw == 2) {
for (i = 0; i < 9; i++) {
printf(" %s", dat_str[i]);
if (option_ecc) printf(" [%1X] ", pck[i].ec&0xF);
}
for (i = 0; i < 9; i++) {
for (j = 0; j < 13; j++) dat_str[i][j] = ' ';
}
}
else {
if (option_auto && option_verbose >= 2) printf("[%c] ", option_inv?'-':'+');
printf("[%3d] ", gpx.frnr);
printf("%4d-%02d-%02d ", gpx.jahr, gpx.monat, gpx.tag);
printf("%02d:%02d:%04.1f ", gpx.std, gpx.min, gpx.sek);
if (option_verbose >= 2 && option_ecc) printf("[%1X,%1X,%1X] ", pck[0].ec&0xF, pck[8].ec&0xF, pck[1].ec&0xF);
printf(" ");
printf(" lat: %.5f ", gpx.lat); if (option_verbose >= 2 && option_ecc) printf("[%1X] ", pck[2].ec&0xF);
printf(" lon: %.5f ", gpx.lon); if (option_verbose >= 2 && option_ecc) printf("[%1X] ", pck[3].ec&0xF);
printf(" alt: %.1f ", gpx.alt); if (option_verbose >= 2 && option_ecc) printf("[%1X] ", pck[4].ec&0xF);
printf(" vH: %5.2f ", gpx.horiV);
printf(" D: %5.1f ", gpx.dir);
printf(" vV: %5.2f ", gpx.vertV);
if (option_ptu && ptu_out) {
float t = get_Temp(gpx.meas24);
if (t > -270.0) printf(" T=%.1fC ", t);
if (option_verbose == 3) {
float t2 = get_Temp2(gpx.meas24);
float t4 = get_Temp4(gpx.meas24);
if (t2 > -270.0) printf(" T2=%.1fC ", t2);
if (t4 > -270.0) printf(" T4=%.1fC ", t4);
printf(" f0: %.2f ", gpx.meas24[0]);
printf(" f3: %.2f ", gpx.meas24[3]);
printf(" f4: %.2f ", gpx.meas24[4]);
}
}
if (option_verbose == 3 && (gpx.sonde_typ & 0xF) == 0xA) {
printf(" U: %.2fV ", gpx.status[0]);
printf(" Ti: %.1fK ", gpx.status[1]);
}
if (option_verbose)
{
if (gpx.sonde_typ & SNbit) {
printf(" (%s) ", gpx.sonde_id);
gpx.sonde_typ ^= SNbit;
}
}
}
printf("\n");
if (option_json && jsonout)
{
// Print JSON blob // valid sonde_ID?
printf("{ \"frame\": %d, \"id\": \"%s\", \"datetime\": \"%04d-%02d-%02dT%02d:%02d:%06.3fZ\", \"lat\": %.5f, \"lon\": %.5f, \"alt\": %.5f, \"vel_h\": %.5f, \"heading\": %.5f, \"vel_v\": %.5f",
gpx.frnr, json_sonde_id, gpx.jahr, gpx.monat, gpx.tag, gpx.std, gpx.min, gpx.sek, gpx.lat, gpx.lon, gpx.alt, gpx.horiV, gpx.dir, gpx.vertV);
if (ptu_out) { // get temperature
float t = get_Temp(gpx.meas24); // ecc-valid temperature?
if (t > -270.0) printf(", \"temp\": %.1f", t);
}
printf(" }\n");
printf("\n");
}
}
for (i = 0; i < 9; i++) pck[i].ec = -1;
}
int print_frame(float frmcnt) {
int i;
int nib = 0;
int frid = -1;
int ret0, ret1, ret2;
int ret = 0;
gpx._frmcnt = frmcnt;
deinterleave(frame_bits+CONF, 7, hamming_conf);
deinterleave(frame_bits+DAT1, 13, hamming_dat1);
deinterleave(frame_bits+DAT2, 13, hamming_dat2);
ret0 = hamming(hamming_conf, 7, block_conf);
ret1 = hamming(hamming_dat1, 13, block_dat1);
ret2 = hamming(hamming_dat2, 13, block_dat2);
ret = ret0 | ret1 | ret2;
if (option_raw == 1) {
for (i = 0; i < 7; i++) {
nib = bits2val(block_conf+S*i, S);
printf("%01X", nib & 0xFF);
}
if (option_ecc) {
if (ret0 == 0) printf(" [OK] ");
else if (ret0 > 0) printf(" [KO] ");
else printf(" [NO] ");
}
printf(" ");
for (i = 0; i < 13; i++) {
nib = bits2val(block_dat1+S*i, S);
printf("%01X", nib & 0xFF);
}
if (option_ecc) {
if (ret1 == 0) printf(" [OK] ");
else if (ret1 > 0) printf(" [KO] ");
else printf(" [NO] ");
}
printf(" ");
for (i = 0; i < 13; i++) {
nib = bits2val(block_dat2+S*i, S);
printf("%01X", nib & 0xFF);
}
if (option_ecc) {
if (ret2 == 0) printf(" [OK] ");
else if (ret2 > 0) printf(" [KO] ");
else printf(" [NO] ");
}
printf("\n");
}
else if (option_ecc) {
if (ret0 == 0 || ret0 > 0) {
conf_out(block_conf, ret0);
}
if (ret1 == 0 || ret1 > 0) {
frid = dat_out(block_dat1, ret1);
if (frid == 8) print_gpx();
}
if (ret2 == 0 || ret2 > 0) {
frid = dat_out(block_dat2, ret2);
if (frid == 8) print_gpx();
}
}
else {
conf_out(block_conf, ret0);
frid = dat_out(block_dat1, ret1);
if (frid == 8) print_gpx();
frid = dat_out(block_dat2, ret2);
if (frid == 8) print_gpx();
}
return ret;
}
/* -------------------------------------------------------------------------- */
int main(int argc, char **argv) {
FILE *fp = NULL;
char *fpname = NULL;
float spb = 0.0;
int header_found = 0;
int ret = 0;
int bit;
int bitpos = 0;
int bitQ;
int pos;
int herrs, herr1;
int headerlen = 0;
int frm = 0, nfrms = 8; // nfrms=1,2,4,8
int k, K;
float mv;
unsigned int mv_pos, mv0_pos;
int mp = 0;
float frm_cnt = 0.0;
float thres = 0.65;
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, -vv\n");
fprintf(stderr, " -r, --raw\n");
fprintf(stderr, " -i, --invert\n");
fprintf(stderr, " --ecc (Hamming ECC)\n");
fprintf(stderr, " --ths <x> (peak threshold; default=%.1f)\n", thres);
fprintf(stderr, " --json (JSON output)\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, "-R") == 0) || (strcmp(*argv, "--RAW") == 0) ) {
option_raw = 2;
}
else if ( (strcmp(*argv, "-i") == 0) || (strcmp(*argv, "--invert") == 0) ) {
option_inv = 0x1;
}
else if ( (strcmp(*argv, "--ecc") == 0) ) { option_ecc = 1; }
else if ( (strcmp(*argv, "--ptu") == 0) ) { option_ptu = 1; ptu_out = 1; }
else if ( (strcmp(*argv, "--auto") == 0) ) { option_auto = 1; }
else if ( (strcmp(*argv, "--dist") == 0) ) { option_dist = 1; option_ecc = 1; }
else if ( (strcmp(*argv, "--json") == 0) ) { option_json = 1; option_ecc = 1; }
else if ( (strcmp(*argv, "--ch2") == 0) ) { wav_channel = 1; } // right channel (default: 0=left)
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, wav_channel);
if ( spb < 0 ) {
fclose(fp);
fprintf(stderr, "error: wav header\n");
return -1;
}
if ( spb < 8 ) {
fprintf(stderr, "note: sample rate low\n");
}
for (k = 0; k < 9; k++) pck[k].ec = -1; // init ecc-status
symlen = 2;
headerlen = strlen(rawheader);
bitofs = 2; // +1 .. +2
K = init_buffers(rawheader, headerlen, 0); // shape=0 (alt. shape=1)
if ( K < 0 ) {
fprintf(stderr, "error: init buffers\n");
return -1;
};
k = 0;
mv = 0; mv_pos = 0;
while ( f32buf_sample(fp, option_inv, 1) != EOF ) {
k += 1;
if (k >= K-4) {
mv0_pos = mv_pos;
mp = getCorrDFT(option_auto, 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(symlen, rawheader, headerlen, mv_pos, mv<0, 0); // symlen=2
herr1 = 0;
if (herrs <= 3 && herrs > 0) {
herr1 = headcmp(symlen, rawheader, headerlen, mv_pos+1, mv<0, 0);
if (herr1 < herrs) {
herrs = herr1;
herr1 = 1;
}
}
if (herrs <= 1) {
header_found = 1; // herrs <= 1 bitfehler in header
if (mv < 0) header_found = -header_found;
}
if (header_found < 0) {
// read_sbit(option_inv) buffer reset?
if (option_auto) option_inv ^= 0x1;
else header_found = 0;
}
if (header_found) {
bitpos = 0;
pos = headerlen;
pos /= 2;
//if (fabs(mv) > 0.85) nfrms = 8; else nfrms = 4; // test OK/KO/NO count
frm = 0;
while ( frm < nfrms ) { // nfrms=1,2,4,8
frm_cnt = mv_pos/(spb*2.0*BITFRAME_LEN) + frm;
while ( pos < BITFRAME_LEN ) {
header_found = !(frm==nfrms-1 && 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) { frm = nfrms; break; }
frame_bits[pos] = 0x30 + bit;
pos++;
bitpos += 1;
}
frame_bits[pos] = '\0';
ret = print_frame(frm_cnt);
if (pos < BITFRAME_LEN) break;
pos = 0;
frm += 1;
//if (ret < 0) frms += 1;
}
header_found = 0;
pos = headerlen;
}
}
}
}
free_buffers();
fclose(fp);
return 0;
}
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