diff --git a/.gitignore b/.gitignore
index 986e154..9b4f447 100644
--- a/.gitignore
+++ b/.gitignore
@@ -43,7 +43,6 @@ auto_rx/fsk_demod
auto_rx/imet1rs_dft
auto_rx/iq_dec
auto_rx/lms6Xmod
-auto_rx/lms6mod
auto_rx/m10mod
auto_rx/m20mod
auto_rx/mk2a1680mod
@@ -61,7 +60,6 @@ mk2a_lms1680
demod/dfm09ecc
demod/mod/dfm09mod
demod/mod/lms6Xmod
-demod/mod/lms6mod
demod/mod/meisei100mod
demod/mod/rs41mod
demod/mod/rs92mod
diff --git a/auto_rx/test/test_demod.py b/auto_rx/test/test_demod.py
index e51d16f..b09998b 100644
--- a/auto_rx/test/test_demod.py
+++ b/auto_rx/test/test_demod.py
@@ -612,38 +612,6 @@ processing_type['imet4_rtlfm'] = {
}
-# LMS6 - 400 MHz version
-_fm_rate = 22000
-# Calculate the necessary conversions
-_rtlfm_oversampling = 8.0 # Viproz's hacked rtl_fm oversamples by 8x.
-_shift = -2.0*_fm_rate/_sample_fs # rtl_fm tunes 'up' by rate*2, so we need to shift the signal down by this amount.
-
-_resample = (_fm_rate*_rtlfm_oversampling)/_sample_fs
-
-if _resample != 1.0:
- # We will need to resample.
- _resample_command = "csdr convert_f_s16 | ./tsrc - - %.4f | csdr convert_s16_f |" % _resample
- _shift = (-2.0*_fm_rate)/(_sample_fs*_resample)
-else:
- _resample_command = ""
-
-_demod_command = "| %s csdr shift_addition_cc %.5f 2>/dev/null | csdr convert_f_u8 |" % (_resample_command, _shift)
-_demod_command += " ./rtl_fm_stdin -M fm -f 401000000 -F9 -s %d 2>/dev/null|" % (int(_fm_rate))
-_demod_command += " sox -t raw -r %d -e s -b 16 -c 1 - -r 48000 -b 8 -t wav - highpass 20 2>/dev/null |" % int(_fm_rate)
-
-
-processing_type['lms6-400_rtlfm'] = {
- 'demod': _demod_command,
- # Decode using rs92ecc
- 'decode': "../lms6mod 2>/dev/null",
- #'decode': "../rs92ecc -vx -v --crc --ecc -r --vel 2>/dev/null", # For measuring No-ECC performance
- # Count the number of telemetry lines.
- "post_process" : " | wc -l",
- #"post_process" : " | grep \"errors: 0\" | wc -l",
- 'files' : "./generated/lms6-400*.bin"
-}
-
-
# # LMS6 - 1680
_fm_rate = 200000
_sample_fs = 480000
diff --git a/demod/mod/Makefile b/demod/mod/Makefile
index 1cddb31..3bdf568 100644
--- a/demod/mod/Makefile
+++ b/demod/mod/Makefile
@@ -1,6 +1,6 @@
LDLIBS = -lm
-PROGRAMS := rs41mod dfm09mod rs92mod lms6mod lms6Xmod meisei100mod m10mod m20mod imet54mod mp3h1mod mts01mod iq_dec
+PROGRAMS := rs41mod dfm09mod rs92mod lms6Xmod meisei100mod m10mod m20mod imet54mod mp3h1mod mts01mod iq_dec
all: $(PROGRAMS)
@@ -10,8 +10,6 @@ dfm09mod: dfm09mod.o demod_mod.o
rs92mod: rs92mod.o demod_mod.o bch_ecc_mod.o
-lms6mod: lms6mod.o demod_mod.o bch_ecc_mod.o
-
lms6Xmod: lms6Xmod.o demod_mod.o bch_ecc_mod.o
meisei100mod: meisei100mod.o demod_mod.o bch_ecc_mod.o
@@ -35,4 +33,4 @@ iq_dec: CFLAGS += -Ofast
iq_dec: iq_dec.o
clean:
- $(RM) $(PROGRAMS) $(PROGRAMS:=.o) demod_mod.o bch_ecc_mod.o
\ No newline at end of file
+ $(RM) $(PROGRAMS) $(PROGRAMS:=.o) demod_mod.o bch_ecc_mod.o
diff --git a/demod/mod/README.md b/demod/mod/README.md
index 3cd0687..c82d204 100644
--- a/demod/mod/README.md
+++ b/demod/mod/README.md
@@ -6,7 +6,7 @@ alternative decoders using cross-correlation for better header-synchronization
#### Files
* `demod_mod.c`, `demod_mod.h`,
- `rs41mod.c`, `rs92mod.c`, `dfm09mod.c`, `m10mod.c`, `lms6mod.c`, `lms6Xmod.c`, `meisei100mod.c`,
+ `rs41mod.c`, `rs92mod.c`, `dfm09mod.c`, `m10mod.c`, `lms6Xmod.c`, `meisei100mod.c`,
`bch_ecc_mod.c`, `bch_ecc_mod.h`
#### Compile
diff --git a/demod/mod/lms6mod.c b/demod/mod/lms6mod.c
deleted file mode 100644
index a0d11df..0000000
--- a/demod/mod/lms6mod.c
+++ /dev/null
@@ -1,1058 +0,0 @@
-
-/*
- * LMS6
- * (403 MHz)
- *
- * sync header: correlation/matched filter
- * files: lms6mod.c demod_mod.c demod_mod.h bch_ecc_mod.c bch_ecc_mod.h
- * compile, either (a) or (b):
- * (a)
- * gcc -c demod_mod.c
- * gcc -DINCLUDESTATIC lms6mod.c demod_mod.o -lm -o lms6mod
- * (b)
- * gcc -c demod_mod.c
- * gcc -c bch_ecc_mod.c
- * gcc lms6mod.c demod_mod.o bch_ecc_mod.o -lm -o lms6mod
- *
- * usage:
- * ./lms6mod --vit --ecc
- * ( --vit recommended)
- * 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_mod.h"
-
-//#define INCLUDESTATIC 1
-#ifdef INCLUDESTATIC
- #include "bch_ecc_mod.c"
-#else
- #include "bch_ecc_mod.h"
-#endif
-
-
-typedef struct {
- i8_t vbs; // verbose output
- i8_t raw; // raw frames
- i8_t crc; // CRC check output
- i8_t ecc; // Reed-Solomon ECC
- i8_t sat; // GPS sat data
- i8_t ptu; // PTU: temperature
- i8_t inv;
- i8_t vit;
- i8_t jsn; // JSON output (auto_rx)
-} option_t;
-
-
-/* -------------------------------------------------------------------------- */
-
-#define BAUD_RATE 4800
-
-#define BITS 8
-#define HEADOFS 0 //16
-#define HEADLEN ((4*16)-HEADOFS)
-
-#define SYNC_LEN 5
-#define FRM_LEN (223)
-#define PAR_LEN (32)
-#define FRMBUF_LEN (3*FRM_LEN)
-#define BLOCKSTART (SYNC_LEN*BITS*2)
-#define BLOCK_LEN (FRM_LEN+PAR_LEN+SYNC_LEN) // 255+5 = 260
-#define RAWBITBLOCK_LEN ((BLOCK_LEN+1)*BITS*2) // (+1 tail)
-
-#define FRAME_LEN (300) // 4800baud, 16bits/byte
-#define BITFRAME_LEN (FRAME_LEN*BITS)
-#define RAWBITFRAME_LEN (BITFRAME_LEN*2)
-#define OVERLAP 64
-#define OFS 4
-
-
-static char rawheader[] = "0101011000001000""0001110010010111""0001101010100111""0011110100111110"; // (c0,inv(c1))
-// (00) 58 f3 3f b8
-// char header[] = "0000001101011101""0100100111000010""0100111111110010""0110100001101011"; // (c0,c1)
-static ui8_t rs_sync[] = { 0x00, 0x58, 0xf3, 0x3f, 0xb8};
-// 0x58f33fb8 little-endian <-> 0x1ACFFC1D big-endian bytes
-
-// (00) 58 f3 3f b8
-static char blk_syncbits[] = "0000000000000000""0000001101011101""0100100111000010""0100111111110010""0110100001101011";
-
-static ui8_t frm_sync[] = { 0x24, 0x54, 0x00, 0x00};
-
-
-#define L 7 // d_f=10
-static char polyA[] = "1001111"; // 0x4f: x^6+x^3+x^2+x+1
-static char polyB[] = "1101101"; // 0x6d: x^6+x^5+x^3+x^2+1
-/*
-// d_f=6
-qA[] = "1110011"; // 0x73: x^6+x^5+x^4+x+1
-qB[] = "0011110"; // 0x1e: x^4+x^3+x^2+x
-pA[] = "10010101"; // 0x95: x^7+x^4+x^2+1 = (x+1)(x^6+x^5+x^4+x+1) = (x+1)qA
-pB[] = "00100010"; // 0x22: x^5+x = (x+1)(x^4+x^3+x^2+x)=x(x+1)^3 = (x+1)qB
-polyA = qA + x*qB
-polyB = qA + qB
-*/
-
-#define N (1 << L)
-#define M (1 << (L-1))
-
-typedef struct {
- ui8_t bIn;
- ui8_t codeIn;
- ui8_t prevState; // 0..M=64
- int w; // > 255 : if (w>250): w=250 ?
- //float sw;
-} states_t;
-
-typedef struct {
- char rawbits[RAWBITFRAME_LEN+OVERLAP*BITS*2 +8];
- states_t state[RAWBITFRAME_LEN+OVERLAP +8][M];
- states_t d[N];
-} VIT_t;
-
-typedef struct {
- int frnr;
- int sn;
- int week; int gpstow; int gpssec;
- int jahr; int monat; int tag;
- int wday;
- int std; int min; float sek;
- double lat; double lon; double alt;
- double vH; double vD; double vV;
- double vE; double vN; double vU;
- char blk_rawbits[RAWBITBLOCK_LEN+SYNC_LEN*BITS*2 +8];
- ui8_t frame[FRM_LEN]; // = { 0x24, 0x54, 0x00, 0x00}; // dataheader
- int frm_pos; // ecc_blk <-> frm_blk
- int sf;
- option_t option;
- RS_t RS;
- VIT_t *vit;
-} gpx_t;
-
-
-/* ------------------------------------------------------------------------------------ */
-static int gpstow_start = -1;
-static double time_elapsed_sec = 0.0;
-
-/*
- * Convert GPS Week and Seconds to Modified Julian Day.
- * - Adapted from sci.astro FAQ.
- * - Ignores UTC leap seconds.
- */
-// in : week, gpssec
-// out: jahr, monat, tag
-static void Gps2Date(gpx_t *gpx) {
- long GpsDays, Mjd;
- long _J, _C, _Y, _M;
-
- GpsDays = gpx->week * 7 + (gpx->gpssec / 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;
- gpx->tag = _J - 2447 * _M / 80;
- _J = _M / 11;
- gpx->monat = _M + 2 - (12 * _J);
- gpx->jahr = 100 * (_C - 49) + _Y + _J;
-}
-/* ------------------------------------------------------------------------------------ */
-
-// ------------------------------------------------------------------------
-
-static ui8_t vit_code[N];
-static vitCodes_init = 0;
-
-static int vit_initCodes(gpx_t *gpx) {
- int cA, cB;
- int i, bits;
-
- VIT_t *pv = calloc(1, sizeof(VIT_t));
- if (pv == NULL) return -1;
- gpx->vit = pv;
-
- if ( vitCodes_init == 0 ) {
- for (bits = 0; bits < N; bits++) {
- cA = 0;
- cB = 0;
- for (i = 0; i < L; i++) {
- cA ^= (polyA[L-1-i]&1) & ((bits >> i)&1);
- cB ^= (polyB[L-1-i]&1) & ((bits >> i)&1);
- }
- vit_code[bits] = (cA<<1) | cB;
- }
- vitCodes_init = 1;
- }
-
- return 0;
-}
-
-static int vit_dist(int c, char *rc) {
- return (((c>>1)^rc[0])&1) + ((c^rc[1])&1);
-}
-
-static int vit_start(VIT_t *vit, char *rc) {
- int t, m, j, c, d;
-
- t = L-1;
- m = M;
- while ( t > 0 ) { // t=0..L-2: nextStatestate[t][j].prevState = j/2;
- }
- t--;
- m /= 2;
- }
-
- m = 2;
- for (t = 1; t < L; t++) {
- for (j = 0; j < m; j++) {
- c = vit_code[j];
- vit->state[t][j].bIn = j % 2;
- vit->state[t][j].codeIn = c;
- d = vit_dist( c, rc+2*(t-1) );
- vit->state[t][j].w = vit->state[t-1][vit->state[t][j].prevState].w + d;
- }
- m *= 2;
- }
-
- return t;
-}
-
-static int vit_next(VIT_t *vit, int t, char *rc) {
- int b, nstate;
- int j, index;
-
- for (j = 0; j < M; j++) {
- for (b = 0; b < 2; b++) {
- nstate = j*2 + b;
- vit->d[nstate].bIn = b;
- vit->d[nstate].codeIn = vit_code[nstate];
- vit->d[nstate].prevState = j;
- vit->d[nstate].w = vit->state[t][j].w + vit_dist( vit->d[nstate].codeIn, rc );
- }
- }
-
- for (j = 0; j < M; j++) {
-
- if ( vit->d[j].w <= vit->d[j+M].w ) index = j; else index = j+M;
-
- vit->state[t+1][j] = vit->d[index];
- }
-
- return 0;
-}
-
-static int vit_path(VIT_t *vit, int j, int t) {
- int c;
-
- vit->rawbits[2*t] = '\0';
- while (t > 0) {
- c = vit->state[t][j].codeIn;
- vit->rawbits[2*t -2] = 0x30 + ((c>>1) & 1);
- vit->rawbits[2*t -1] = 0x30 + (c & 1);
- j = vit->state[t][j].prevState;
- t--;
- }
-
- return 0;
-}
-
-static int viterbi(VIT_t *vit, char *rc) {
- int t, tmax;
- int j, j_min, w_min;
-
- vit_start(vit, rc);
-
- tmax = strlen(rc)/2;
-
- for (t = L-1; t < tmax; t++)
- {
- vit_next(vit, t, rc+2*t);
- }
-
- w_min = -1;
- for (j = 0; j < M; j++) {
- if (w_min < 0) {
- w_min = vit->state[tmax][j].w;
- j_min = j;
- }
- if (vit->state[tmax][j].w < w_min) {
- w_min = vit->state[tmax][j].w;
- j_min = j;
- }
- }
- vit_path(vit, j_min, tmax);
-
- return 0;
-}
-
-// ------------------------------------------------------------------------
-
-static int deconv(char* rawbits, char *bits) {
-
- int j, n, bitA, bitB;
- char *p;
- int len;
- int errors = 0;
- int m = L-1;
-
- len = strlen(rawbits);
- for (j = 0; j < m; j++) bits[j] = '0';
- n = 0;
- while ( 2*(m+n) < len ) {
- p = rawbits+2*(m+n);
- bitA = bitB = 0;
- for (j = 0; j < m; j++) {
- bitA ^= (bits[n+j]&1) & (polyA[j]&1);
- bitB ^= (bits[n+j]&1) & (polyB[j]&1);
- }
- if ( (bitA^(p[0]&1))==(polyA[m]&1) && (bitB^(p[1]&1))==(polyB[m]&1) ) bits[n+m] = '1';
- else if ( (bitA^(p[0]&1))==0 && (bitB^(p[1]&1))==0 ) bits[n+m] = '0';
- else {
- if ( (bitA^(p[0]&1))!=(polyA[m]&1) && (bitB^(p[1]&1))==(polyB[m]&1) ) bits[n+m] = 0x39;
- else bits[n+m] = 0x38;
- errors = n;
- break;
- }
- n += 1;
- }
- bits[n+m] = '\0';
-
- return errors;
-}
-
-// ------------------------------------------------------------------------
-
-static int crc16_0(ui8_t frame[], int len) {
- int crc16poly = 0x1021;
- int rem = 0x0, i, j;
- int byte;
-
- for (i = 0; i < len; i++) {
- byte = frame[i];
- rem = rem ^ (byte << 8);
- for (j = 0; j < 8; j++) {
- if (rem & 0x8000) {
- rem = (rem << 1) ^ crc16poly;
- }
- else {
- rem = (rem << 1);
- }
- rem &= 0xFFFF;
- }
- }
- return rem;
-}
-
-static int check_CRC(ui8_t frame[]) {
- ui32_t crclen = 0,
- crcdat = 0;
-
- crclen = 221;
- crcdat = (frame[crclen]<<8) | frame[crclen+1];
- if ( crcdat != crc16_0(frame, crclen) ) {
- return 1; // CRC NO
- }
- else return 0; // CRC OK
-}
-
-// ------------------------------------------------------------------------
-
-static int bits2bytes(char *bitstr, ui8_t *bytes) {
- int i, bit, d, byteval;
- int len = strlen(bitstr)/8;
- int bitpos, bytepos;
-
- bitpos = 0;
- bytepos = 0;
-
- while (bytepos < len) {
-
- byteval = 0;
- d = 1;
- for (i = 0; i < BITS; i++) {
- bit=*(bitstr+bitpos+i); /* little endian */
- //bit=*(bitstr+bitpos+7-i); /* big endian */
- if ((bit == '1') || (bit == '9')) byteval += d;
- else /*if ((bit == '0') || (bit == '8'))*/ byteval += 0;
- d <<= 1;
- }
- bitpos += BITS;
- bytes[bytepos++] = byteval & 0xFF;
- }
-
- //while (bytepos < FRAME_LEN+OVERLAP) bytes[bytepos++] = 0;
-
- return bytepos;
-}
-
-/* -------------------------------------------------------------------------- */
-
-
-#define pos_SondeSN (OFS+0x00) // ?4 byte 00 7A....
-#define pos_FrameNb (OFS+0x04) // 2 byte
-//GPS Position
-#define pos_GPSTOW (OFS+0x06) // 4 byte
-#define pos_GPSlat (OFS+0x0E) // 4 byte
-#define pos_GPSlon (OFS+0x12) // 4 byte
-#define pos_GPSalt (OFS+0x16) // 4 byte
-//GPS Velocity East-North-Up (ENU)
-#define pos_GPSvO (OFS+0x1A) // 3 byte
-#define pos_GPSvN (OFS+0x1D) // 3 byte
-#define pos_GPSvV (OFS+0x20) // 3 byte
-
-
-static int get_SondeSN(gpx_t *gpx) {
- unsigned byte;
-
- byte = (gpx->frame[pos_SondeSN]<<24) | (gpx->frame[pos_SondeSN+1]<<16)
- | (gpx->frame[pos_SondeSN+2]<<8) | gpx->frame[pos_SondeSN+3];
- gpx->sn = byte & 0xFFFFFF;
-
- return 0;
-}
-
-static int get_FrameNb(gpx_t *gpx) {
- int i;
- unsigned byte;
- ui8_t frnr_bytes[2];
- int frnr;
-
- for (i = 0; i < 2; i++) {
- byte = gpx->frame[pos_FrameNb + i];
- frnr_bytes[i] = byte;
- }
-
- frnr = (frnr_bytes[0] << 8) + frnr_bytes[1] ;
- gpx->frnr = frnr;
-
- return 0;
-}
-
-
-//char weekday[7][3] = { "So", "Mo", "Di", "Mi", "Do", "Fr", "Sa"};
-static char weekday[7][4] = { "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};
-
-static int get_GPStime(gpx_t *gpx, int crc_err) {
- int i;
- unsigned byte;
- ui8_t gpstime_bytes[4];
- int gpstime = 0, // 32bit
- day;
- float ms;
-
- for (i = 0; i < 4; i++) {
- byte = gpx->frame[pos_GPSTOW + i];
- gpstime_bytes[i] = byte;
- }
- gpstime = 0;
- for (i = 0; i < 4; i++) {
- gpstime |= gpstime_bytes[i] << (8*(3-i));
- }
-
- if (gpstow_start < 0 && !crc_err) {
- gpstow_start = gpstime; // time elapsed since start-up?
- if (gpx->week > 0 && gpstime/1000.0 < time_elapsed_sec) gpx->week += 1;
- }
- gpx->gpstow = gpstime;
-
- ms = gpstime % 1000;
- gpstime /= 1000;
- gpx->gpssec = gpstime;
-
- day = gpstime / (24 * 3600);
- gpstime %= (24*3600);
-
- if ((day < 0) || (day > 6)) return -1;
-
- gpx->wday = day;
- gpx->std = gpstime / 3600;
- gpx->min = (gpstime % 3600) / 60;
- gpx->sek = gpstime % 60 + ms/1000.0;
-
- return 0;
-}
-
-static double B60B60 = (1<<30)/90.0; // 2^32/360 = 2^30/90 = 0xB60B60.711x
-
-static int get_GPSlat(gpx_t *gpx) {
- int i;
- unsigned byte;
- ui8_t gpslat_bytes[4];
- int gpslat;
- double lat;
-
- for (i = 0; i < 4; i++) {
- byte = gpx->frame[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;
- gpx->lat = lat;
-
- return 0;
-}
-
-static int get_GPSlon(gpx_t *gpx) {
- int i;
- unsigned byte;
- ui8_t gpslon_bytes[4];
- int gpslon;
- double lon;
-
- for (i = 0; i < 4; i++) {
- byte = gpx->frame[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;
- gpx->lon = lon;
-
- return 0;
-}
-
-static int get_GPSalt(gpx_t *gpx) {
- int i;
- unsigned byte;
- ui8_t gpsheight_bytes[4];
- int gpsheight;
- double height;
-
- for (i = 0; i < 4; i++) {
- byte = gpx->frame[pos_GPSalt + i];
- gpsheight_bytes[i] = byte;
- }
-
- gpsheight = 0;
- for (i = 0; i < 4; i++) {
- gpsheight |= gpsheight_bytes[i] << (8*(3-i));
- }
- height = gpsheight / 1000.0;
- gpx->alt = height;
-
- if (height < -200 || height > 60000) return -1;
- return 0;
-}
-
-static int get_GPSvel24(gpx_t *gpx) {
- int i;
- unsigned byte;
- ui8_t gpsVel_bytes[3];
- int vel24;
- double vx, vy, vz, dir; //, alpha;
-
- for (i = 0; i < 3; i++) {
- byte = gpx->frame[pos_GPSvO + i];
- gpsVel_bytes[i] = byte;
- }
- vel24 = gpsVel_bytes[0] << 16 | gpsVel_bytes[1] << 8 | gpsVel_bytes[2];
- if (vel24 > (0x7FFFFF)) vel24 -= 0x1000000;
- vx = vel24 / 1e3; // ost
-
- for (i = 0; i < 3; i++) {
- byte = gpx->frame[pos_GPSvN + i];
- gpsVel_bytes[i] = byte;
- }
- vel24 = gpsVel_bytes[0] << 16 | gpsVel_bytes[1] << 8 | gpsVel_bytes[2];
- if (vel24 > (0x7FFFFF)) vel24 -= 0x1000000;
- vy= vel24 / 1e3; // nord
-
- for (i = 0; i < 3; i++) {
- byte = gpx->frame[pos_GPSvV + i];
- gpsVel_bytes[i] = byte;
- }
- vel24 = gpsVel_bytes[0] << 16 | gpsVel_bytes[1] << 8 | gpsVel_bytes[2];
- if (vel24 > (0x7FFFFF)) vel24 -= 0x1000000;
- vz = vel24 / 1e3; // hoch
-
- gpx->vE = vx;
- gpx->vN = vy;
- gpx->vU = vz;
-
-
- gpx->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)
- gpx->vD2 = dir;
-*/
- dir = atan2(vx, vy) * 180 / M_PI;
- if (dir < 0) dir += 360;
- gpx->vD = dir;
-
- gpx->vV = vz;
-
- return 0;
-}
-
-
-// RS(255,223)-CCSDS
-#define rs_N 255
-#define rs_K 223
-#define rs_R (rs_N-rs_K) // 32
-
-static int lms6_ecc(gpx_t *gpx, ui8_t *cw) {
- int errors;
- ui8_t err_pos[rs_R],
- err_val[rs_R];
-
- errors = rs_decode(&gpx->RS, cw, err_pos, err_val);
-
- return errors;
-}
-
-static void print_frame(gpx_t *gpx, int crc_err, int len) {
- int err=0;
-
- if (gpx->frame[0] != 0)
- {
- //if ((gpx->frame[pos_SondeSN+1] & 0xF0) == 0x70) // ? beginnen alle SNs mit 0x7A.... bzw 80..... ?
- if ( gpx->frame[pos_SondeSN+1] )
- {
- get_SondeSN(gpx);
- get_FrameNb(gpx);
- printf(" (%7d) ", gpx->sn);
- printf(" [%5d] ", gpx->frnr);
- err = get_GPStime(gpx, crc_err);
- if (!err) printf("%s ", weekday[gpx->wday]);
- if (gpx->week > 0) {
- if (gpx->gpstow < gpstow_start && !crc_err) {
- gpx->week += 1; // week roll-over
- gpstow_start = gpx->gpstow;
- }
- Gps2Date(gpx);
- fprintf(stdout, "%04d-%02d-%02d ", gpx->jahr, gpx->monat, gpx->tag);
- }
- printf("%02d:%02d:%06.3f ", gpx->std, gpx->min, gpx->sek); // falls Rundung auf 60s: Ueberlauf
-
- get_GPSlat(gpx);
- get_GPSlon(gpx);
- err = get_GPSalt(gpx);
- if (!err) {
- printf(" lat: %.5f ", gpx->lat);
- printf(" lon: %.5f ", gpx->lon);
- printf(" alt: %.2fm ", gpx->alt);
- get_GPSvel24(gpx);
- //if (gpx->option.vbs == 2) printf(" (%.1f ,%.1f,%.1f) ", gpx->vE, gpx->vN, gpx->vU);
- printf(" vH: %.1fm/s D: %.1f vV: %.1fm/s ", gpx->vH, gpx->vD, gpx->vV);
- }
-
- if (crc_err==0) printf(" [OK]"); else printf(" [NO]");
-
- printf("\n");
-
-
- if (gpx->option.jsn) {
- // Print JSON output required by auto_rx.
- if (crc_err==0) { // CRC-OK
- // UTC oder GPS?
- printf("{ \"frame\": %d, \"id\": \"LMS6-%d\", \"datetime\": \"", gpx->frnr, gpx->sn );
- //if (gpx->week > 0) printf("%04d-%02d-%02dT", gpx->jahr, gpx->monat, gpx->tag );
- printf("%02d:%02d:%06.3fZ\", \"lat\": %.5f, \"lon\": %.5f, \"alt\": %.5f, \"vel_h\": %.5f, \"heading\": %.5f, \"vel_v\": %.5f",
- gpx->std, gpx->min, gpx->sek, gpx->lat, gpx->lon, gpx->alt, gpx->vH, gpx->vD, gpx->vV );
- printf(", \"gpstow\": %d", gpx->gpstow );
- printf(" }\n");
- printf("\n");
- }
- }
-
- }
- }
-}
-
-
-static void proc_frame(gpx_t *gpx, int len) {
- int blk_pos = SYNC_LEN;
- ui8_t block_bytes[BLOCK_LEN+8];
- ui8_t rs_cw[rs_N];
- char frame_bits[BITFRAME_LEN+OVERLAP*BITS +8]; // init L-1 bits mit 0
- char *rawbits = NULL;
- int i, j;
- int err = 0;
- int errs = 0;
- int crc_err = 0;
- int flen, blen;
-
-
- if ((len % 8) > 4) {
- while (len % 8) gpx->blk_rawbits[len++] = '0';
- }
- gpx->blk_rawbits[len] = '\0';
-
- flen = len / (2*BITS);
-
- if (gpx->option.vit == 1) {
- viterbi(gpx->vit, gpx->blk_rawbits);
- rawbits = gpx->vit->rawbits;
- }
- else rawbits = gpx->blk_rawbits;
-
- err = deconv(rawbits, frame_bits);
-
- if (err) { for (i=err; i < RAWBITBLOCK_LEN/2; i++) frame_bits[i] = 0; }
-
-
- blen = bits2bytes(frame_bits, block_bytes);
- for (j = blen; j < BLOCK_LEN+8; j++) block_bytes[j] = 0;
-
-
- if (gpx->option.ecc) {
- for (j = 0; j < rs_N; j++) rs_cw[rs_N-1-j] = block_bytes[SYNC_LEN+j];
- errs = lms6_ecc(gpx, rs_cw);
- for (j = 0; j < rs_N; j++) block_bytes[SYNC_LEN+j] = rs_cw[rs_N-1-j];
- }
-
- if (gpx->option.raw == 2) {
- for (i = 0; i < flen; i++) printf("%02x ", block_bytes[i]);
- if (gpx->option.ecc) printf("(%d)", errs);
- printf("\n");
- }
- else if (gpx->option.raw == 4 && gpx->option.ecc) {
- for (i = 0; i < rs_N; i++) printf("%02x", block_bytes[SYNC_LEN+i]);
- printf(" (%d)", errs);
- printf("\n");
- }
- else if (gpx->option.raw == 8) {
- if (gpx->option.vit == 1) {
- for (i = 0; i < len; i++) printf("%c", gpx->vit->rawbits[i]); printf("\n");
- }
- else {
- for (i = 0; i < len; i++) printf("%c", gpx->blk_rawbits[i]); printf("\n");
- }
- }
-
- blk_pos = SYNC_LEN;
-
- while ( blk_pos-SYNC_LEN < FRM_LEN ) {
-
- if (gpx->sf == 0) {
- while ( blk_pos-SYNC_LEN < FRM_LEN ) {
- gpx->sf = 0;
- for (j = 0; j < 4; j++) gpx->sf += (block_bytes[blk_pos+j] == frm_sync[j]);
- if (gpx->sf == 4) {
- gpx->frm_pos = 0;
- break;
- }
- blk_pos++;
- }
- }
-
- if ( gpx->sf && gpx->frm_pos < FRM_LEN ) {
- gpx->frame[gpx->frm_pos] = block_bytes[blk_pos];
- gpx->frm_pos++;
- blk_pos++;
- }
-
- if (gpx->frm_pos == FRM_LEN) {
-
- crc_err = check_CRC(gpx->frame);
-
- if (gpx->option.raw == 1) {
- for (i = 0; i < FRM_LEN; i++) printf("%02x ", gpx->frame[i]);
- if (crc_err==0) printf(" [OK]"); else printf(" [NO]");
- printf("\n");
- }
-
- if (gpx->option.raw == 0) print_frame(gpx, crc_err, len);
-
- gpx->frm_pos = 0;
- gpx->sf = 0;
- }
-
- }
-
-}
-
-
-int main(int argc, char **argv) {
-
- int option_inv = 0; // invertiert Signal
- int option_iq = 0;
- int option_lp = 0;
- int option_dc = 0;
- int wavloaded = 0;
- int sel_wavch = 0; // audio channel: left
- int gpsweek = 0;
-
- FILE *fp = NULL;
- char *fpname = NULL;
-
- int k;
-
- int bit, rbit;
- int bitpos = 0;
- int bitQ;
- int pos;
- //int headerlen = 0;
-
- int header_found = 0;
-
- float thres = 0.76;
- float _mv = 0.0;
-
- int symlen = 1;
- int bitofs = 1; // +1 .. +2
- int shift = 0;
-
- unsigned int bc = 0;
-
- pcm_t pcm = {0};
- dsp_t dsp = {0}; //memset(&dsp, 0, sizeof(dsp));
-/*
- // gpx_t _gpx = {0}; gpx_t *gpx = &_gpx; // stack size ...
- gpx_t *gpx = NULL;
- gpx = calloc(1, sizeof(gpx_t));
- //memset(gpx, 0, sizeof(gpx_t));
-*/
- gpx_t _gpx = {0}; gpx_t *gpx = &_gpx;
-
-
-#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, " --vit (Viterbi)\n");
- fprintf(stderr, " --ecc (Reed-Solomon)\n");
- return 0;
- }
- else if ( (strcmp(*argv, "-v") == 0) || (strcmp(*argv, "--verbose") == 0) ) {
- gpx->option.vbs = 1;
- }
- else if ( (strcmp(*argv, "-r") == 0) || (strcmp(*argv, "--raw") == 0) ) {
- gpx->option.raw = 1; // bytes - rs_ecc_codewords
- }
- else if ( (strcmp(*argv, "-r0") == 0) || (strcmp(*argv, "--raw0") == 0) ) {
- gpx->option.raw = 2; // bytes: sync + codewords
- }
- else if ( (strcmp(*argv, "-rc") == 0) || (strcmp(*argv, "--rawecc") == 0) ) {
- gpx->option.raw = 4; // rs_ecc_codewords
- }
- else if ( (strcmp(*argv, "-R") == 0) || (strcmp(*argv, "--RAW") == 0) ) {
- gpx->option.raw = 8; // rawbits
- }
- else if (strcmp(*argv, "--ecc" ) == 0) { gpx->option.ecc = 1; } // RS-ECC
- else if (strcmp(*argv, "--vit" ) == 0) { gpx->option.vit = 1; } // viterbi
- else if ( (strcmp(*argv, "--gpsweek") == 0) ) {
- ++argv;
- if (*argv) {
- gpsweek = atoi(*argv);
- if (gpsweek < 1024 || gpsweek > 3072) gpsweek = 0;
- }
- else return -1;
- }
- else if ( (strcmp(*argv, "-i") == 0) || (strcmp(*argv, "--invert") == 0) ) {
- option_inv = 1; // nicht noetig
- }
- else if ( (strcmp(*argv, "--dc") == 0) ) {
- option_dc = 1;
- }
- else if ( (strcmp(*argv, "--ch2") == 0) ) { sel_wavch = 1; } // right channel (default: 0=left)
- else if ( (strcmp(*argv, "--ths") == 0) ) {
- ++argv;
- if (*argv) {
- thres = atof(*argv);
- }
- else return -1;
- }
- 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, "--IQ") == 0) { // fq baseband -> IF (rotate from and decimate)
- double fq = 0.0; // --IQ , -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, "--lp") == 0) { option_lp = 1; } // IQ lowpass
- else if (strcmp(*argv, "--json") == 0) {
- gpx->option.jsn = 1;
- gpx->option.ecc = 1;
- gpx->option.vit = 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;
-
-
- if (gpx->option.raw == 4) gpx->option.ecc = 1;
-
- // init gpx
- memcpy(gpx->blk_rawbits, blk_syncbits, sizeof(blk_syncbits));
- memcpy(gpx->frame, frm_sync, sizeof(frm_sync));
- gpx->frm_pos = 0; // ecc_blk <-> frm_blk
- gpx->sf = 0;
-
- gpx->option.inv = option_inv; // irrelevant
-
- gpx->week = gpsweek;
-
- if (option_iq) sel_wavch = 0;
-
- pcm.sel_ch = sel_wavch;
- k = read_wav_header(&pcm, fp);
- if ( k < 0 ) {
- fclose(fp);
- fprintf(stderr, "error: wav header\n");
- return -1;
- }
-
- symlen = 1;
-
- // 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 = 1;
- dsp._spb = dsp.sps*symlen;
- dsp.hdr = rawheader;
- dsp.hdrlen = strlen(rawheader);
- dsp.BT = 1.5; // bw/time (ISI) // 1.0..2.0
- dsp.h = 0.9; // 1.0 modulation index
- dsp.lpIQ_bw = 8e3;
- dsp.opt_iq = option_iq;
- dsp.opt_lp = option_lp;
-
- if ( dsp.sps < 8 ) {
- fprintf(stderr, "note: sample rate low (%.1f sps)\n", dsp.sps);
- }
-
- //headerlen = dsp.hdrlen;
-
- k = init_buffers(&dsp);
- if ( k < 0 ) {
- fprintf(stderr, "error: init buffers\n");
- return -1;
- };
-
-
- if (gpx->option.vit) {
- k = vit_initCodes(gpx);
- if (k < 0) return -1;
- }
- if (gpx->option.ecc) {
- rs_init_RS255ccsds(&gpx->RS); // bch_ecc.c
- }
-
-
- bitofs += shift;
-
-
- while ( 1 )
- {
-
- header_found = find_header(&dsp, thres, 3, bitofs, option_dc);
- _mv = dsp.mv;
-
- if (header_found == EOF) break;
-
- // mv == correlation score
- if (_mv*(0.5-gpx->option.inv) < 0) {
- gpx->option.inv ^= 0x1; // LMS6: irrelevant
- }
-
- if (header_found) {
-
- bitpos = 0;
- pos = BLOCKSTART;
-
- if (_mv > 0) bc = 0; else bc = 1;
-
- while ( pos < RAWBITBLOCK_LEN ) {
-
- bitQ = read_slbit(&dsp, &rbit, 0, bitofs, bitpos, -1, 0); // symlen=1
-
- if (bitQ == EOF) { break; }
-
- bit = rbit ^ (bc%2); // (c0,inv(c1))
- gpx->blk_rawbits[pos] = 0x30 + bit;
-
- bc++;
- pos++;
- bitpos += 1;
- }
-
- gpx->blk_rawbits[pos] = '\0';
-
- time_elapsed_sec = dsp.sample_in / (double)dsp.sr;
- proc_frame(gpx, pos);
-
- if (pos < RAWBITBLOCK_LEN) break;
-
- pos = BLOCKSTART;
- header_found = 0;
- }
-
- }
-
-
- free_buffers(&dsp);
- if (gpx->vit) { free(gpx->vit); gpx->vit = NULL; }
-
- fclose(fp);
-
- return 0;
-}
-