kopia lustrzana https://github.com/rs1729/RS
Porównaj commity
3 Commity
1443aa3764
...
b2098e1d85
| Autor | SHA1 | Data |
|---|---|---|
Zilog80
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b2098e1d85 | |
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Zilog80
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2e7d14d907 | |
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Zilog80
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6d0cfc4f64 |
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@ -104,6 +104,7 @@ typedef struct {
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double vH; double vD; double vV;
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double vx; double vy; double vD2;
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float T; float RH; float TH; float P;
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float batV;
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ui8_t numSV;
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//ui8_t utc_ofs;
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ui8_t fwVer;
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@ -724,6 +725,16 @@ static float get_P(gpx_t *gpx) {
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return hPa;
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}
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static float get_BatV(gpx_t *gpx) {
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float batV = 0.0f;
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ui8_t val = gpx->frame_bytes[0x26]; // cf. DF9DQ
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batV = val * (3.3f/255); // upper 8 bits ADC
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return batV;
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}
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/* -------------------------------------------------------------------------- */
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static int print_pos(gpx_t *gpx, int bcOK, int csOK) {
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@ -752,6 +763,8 @@ static int print_pos(gpx_t *gpx, int bcOK, int csOK) {
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gpx->P = get_P(gpx); // (optional) pressure
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}
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gpx->batV = get_BatV(gpx); // battery V
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if ( !gpx->option.slt )
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{
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if (gpx->option.col) {
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@ -795,6 +808,9 @@ static int print_pos(gpx_t *gpx, int bcOK, int csOK) {
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else fprintf(stdout, " P=%.1fhPa ", gpx->P);
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}
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}
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if (gpx->option.vbs >= 3 && csOK) {
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fprintf(stdout, " (bat:%.2fV)", gpx->batV);
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}
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fprintf(stdout, ANSI_COLOR_RESET"");
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}
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else {
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@ -837,6 +853,9 @@ static int print_pos(gpx_t *gpx, int bcOK, int csOK) {
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else fprintf(stdout, " P=%.1fhPa ", gpx->P);
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}
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}
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if (gpx->option.vbs >= 3 && csOK) {
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fprintf(stdout, " (bat:%.2fV)", gpx->batV);
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}
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}
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fprintf(stdout, "\n");
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}
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@ -861,6 +880,7 @@ static int print_pos(gpx_t *gpx, int bcOK, int csOK) {
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if (gpx->RH > -0.5f) fprintf(stdout, ", \"humidity\": %.1f", gpx->RH );
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if (gpx->P > 0.0f) fprintf(stdout, ", \"pressure\": %.2f", gpx->P );
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}
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fprintf(stdout, ", \"batt\": %.2f", gpx->batV);
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fprintf(stdout, ", \"rawid\": \"M20_%02X%02X%02X\"", gpx->frame_bytes[pos_SN], gpx->frame_bytes[pos_SN+1], gpx->frame_bytes[pos_SN+2]); // gpx->type
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fprintf(stdout, ", \"subtype\": \"0x%02X\"", gpx->type);
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if (gpx->jsn_freq > 0) {
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@ -0,0 +1,520 @@
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/*
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Malaysia
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2023-05-12 ([ 4400] 12:20:37 alt: 12616.6 lat: 2.6785 lon: 101.5827)
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401100 kHz (64kHz wide)
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Weathex w/o PN9 ?
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*/
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#include <stdio.h>
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#include <string.h>
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typedef unsigned char ui8_t;
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typedef short i16_t;
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typedef unsigned int ui32_t;
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int option_verbose = 0,
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option_raw = 0,
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option_inv = 0,
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option_b = 0,
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option_timestamp = 0,
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wavloaded = 0;
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int wav_channel = 0; // audio channel: left
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#define BAUD_RATE 4800.0 // (4997.2) // 5000
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#define FRAMELEN 69 //64
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#define BITFRAMELEN (8*FRAMELEN)
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/*
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#define HEADLEN 56
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#define HEADOFS 0
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char header[] = "10101010""10101010""10101010" // AA AA AA (preamble)
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"11000001""10010100""11000001"; // C1 94 C1
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*/
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//preamble_header_sn1: 101010101010101010101010 1100000110010100110000011100011001111000 110001010110110111100100
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//preamble_header_sn2: 101010101010101010101010 1100000110010100110000011100011001111000 001100100110110111100100
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//preamble_header_sn3: 101010101010101010101010 1100000110010100110000011100011001111000 001010000110110111100100
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#define HEADLEN 40 //48
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#define HEADOFS 0
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char header[] = "10101010""10101010""10101010" // AA AA AA (preamble)
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"00101101""11010100"; //"10101010"; // 2D D4 55/AA
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char buf[HEADLEN+1] = "xxxxxxxxxx\0";
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int bufpos = 0;
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char frame_bits[BITFRAMELEN+1];
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ui8_t frame_bytes[FRAMELEN+1];
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ui8_t xframe[FRAMELEN+1];
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int sample_rate = 0, bits_sample = 0, channels = 0;
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float samples_per_bit = 0;
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int findstr(char *buff, char *str, int pos) {
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int i;
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for (i = 0; i < 4; i++) {
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if (buff[(pos+i)%4] != str[i]) break;
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}
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return i;
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}
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int read_wav_header(FILE *fp) {
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char txt[4+1] = "\0\0\0\0";
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unsigned char dat[4];
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int byte, p=0;
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if (fread(txt, 1, 4, fp) < 4) return -1;
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if (strncmp(txt, "RIFF", 4)) return -1;
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if (fread(txt, 1, 4, fp) < 4) return -1;
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// pos_WAVE = 8L
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if (fread(txt, 1, 4, fp) < 4) return -1;
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if (strncmp(txt, "WAVE", 4)) return -1;
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// pos_fmt = 12L
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for ( ; ; ) {
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if ( (byte=fgetc(fp)) == EOF ) return -1;
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txt[p % 4] = byte;
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p++; if (p==4) p=0;
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if (findstr(txt, "fmt ", p) == 4) break;
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}
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if (fread(dat, 1, 4, fp) < 4) return -1;
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if (fread(dat, 1, 2, fp) < 2) return -1;
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if (fread(dat, 1, 2, fp) < 2) return -1;
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channels = dat[0] + (dat[1] << 8);
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if (fread(dat, 1, 4, fp) < 4) return -1;
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memcpy(&sample_rate, dat, 4); //sample_rate = dat[0]|(dat[1]<<8)|(dat[2]<<16)|(dat[3]<<24);
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if (fread(dat, 1, 4, fp) < 4) return -1;
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if (fread(dat, 1, 2, fp) < 2) return -1;
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//byte = dat[0] + (dat[1] << 8);
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if (fread(dat, 1, 2, fp) < 2) return -1;
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bits_sample = dat[0] + (dat[1] << 8);
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// pos_dat = 36L + info
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for ( ; ; ) {
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if ( (byte=fgetc(fp)) == EOF ) return -1;
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txt[p % 4] = byte;
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p++; if (p==4) p=0;
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if (findstr(txt, "data", p) == 4) break;
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}
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if (fread(dat, 1, 4, fp) < 4) return -1;
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fprintf(stderr, "sample_rate: %d\n", sample_rate);
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fprintf(stderr, "bits : %d\n", bits_sample);
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fprintf(stderr, "channels : %d\n", channels);
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if ((bits_sample != 8) && (bits_sample != 16)) return -1;
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samples_per_bit = sample_rate/(float)BAUD_RATE;
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fprintf(stderr, "samples/bit: %.2f\n", samples_per_bit);
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return 0;
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}
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#define EOF_INT 0x1000000
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unsigned long sample_count = 0;
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double bitgrenze = 0;
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int read_signed_sample(FILE *fp) { // int = i32_t
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int byte, i, sample=0, s=0; // EOF -> 0x1000000
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for (i = 0; i < channels; i++) {
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// i = 0: links bzw. mono
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byte = fgetc(fp);
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if (byte == EOF) return EOF_INT;
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if (i == wav_channel) sample = byte;
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if (bits_sample == 16) {
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byte = fgetc(fp);
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if (byte == EOF) return EOF_INT;
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if (i == wav_channel) sample += byte << 8;
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}
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}
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if (bits_sample == 8) s = sample-128; // 8bit: 00..FF, centerpoint 0x80=128
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if (bits_sample == 16) s = (short)sample;
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sample_count++;
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return s;
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}
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int par=1, par_alt=1;
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int read_bits_fsk(FILE *fp, int *bit, int *len) {
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static int sample;
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int n;
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float l;
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n = 0;
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do{
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sample = read_signed_sample(fp);
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if (sample == EOF_INT) return EOF;
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//sample_count++; // in read_signed_sample()
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par_alt = par;
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par = (sample >= 0) ? 1 : -1; // 8bit: 0..127,128..255 (-128..-1,0..127)
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n++;
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} while (par*par_alt > 0);
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l = (float)n / samples_per_bit;
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*len = (int)(l+0.5);
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if (!option_inv) *bit = (1+par_alt)/2; // oben 1, unten -1
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else *bit = (1-par_alt)/2; // sdr#<rev1381?, invers: unten 1, oben -1
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// *bit = (1+inv*par_alt)/2; // ausser inv=0
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/* Y-offset ? */
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return 0;
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}
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int bitstart = 0;
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unsigned long scount = 0;
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int read_rawbit(FILE *fp, int *bit) {
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int sample;
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int sum;
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sum = 0;
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if (bitstart) {
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scount = 0; // eigentlich scount = 1
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bitgrenze = 0; // oder bitgrenze = -1
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bitstart = 0;
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}
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bitgrenze += samples_per_bit;
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do {
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sample = read_signed_sample(fp);
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if (sample == EOF_INT) return EOF;
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//sample_count++; // in read_signed_sample()
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//par = (sample >= 0) ? 1 : -1; // 8bit: 0..127,128..255 (-128..-1,0..127)
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sum += sample;
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scount++;
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} while (scount < bitgrenze); // n < samples_per_bit
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if (sum >= 0) *bit = 1;
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else *bit = 0;
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if (option_inv) *bit ^= 1;
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return 0;
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}
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int compare() {
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int i=0;
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while ((i < HEADLEN) && (buf[(bufpos+i) % HEADLEN] == header[HEADLEN+HEADOFS-1-i])) {
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i++;
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}
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return i;
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}
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char inv(char c) {
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if (c == '0') return '1';
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if (c == '1') return '0';
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return c;
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}
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int compare2() {
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int i=0;
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while ((i < HEADLEN) && (buf[(bufpos+i) % HEADLEN] == inv(header[HEADLEN+HEADOFS-1-i]))) {
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i++;
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}
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return i;
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}
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int bits2bytes(char *bitstr, ui8_t *bytes) {
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int i, bit, d, byteval;
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int bitpos, bytepos;
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bitpos = 0;
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bytepos = 0;
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while (bytepos < FRAMELEN) {
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byteval = 0;
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d = 1;
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for (i = 0; i < 8; i++) {
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//bit = bitstr[bitpos+i]; /* little endian */
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bit = bitstr[bitpos+7-i]; /* big endian */
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if (bit == '1') byteval += d;
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else /*if ((bit == '0') */ byteval += 0;
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d <<= 1;
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}
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bitpos += 8;
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bytes[bytepos++] = byteval;
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}
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//while (bytepos < FRAME_LEN) bytes[bytepos++] = 0;
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return 0;
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}
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// PN9 Data Whitening
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// cf. https://www.ti.com/lit/an/swra322/swra322.pdf
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// https://destevez.net/2019/07/lucky-7-decoded/
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//
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// counter low byte: frame[OFS+4] XOR 0xCC
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// zero bytes, frame[OFS+30]: 0C CA C9 FB 49 37 E5 A8
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//
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ui8_t PN9b[64] = { 0xFF, 0x87, 0xB8, 0x59, 0xB7, 0xA1, 0xCC, 0x24,
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0x57, 0x5E, 0x4B, 0x9C, 0x0E, 0xE9, 0xEA, 0x50,
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0x2A, 0xBE, 0xB4, 0x1B, 0xB6, 0xB0, 0x5D, 0xF1,
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0xE6, 0x9A, 0xE3, 0x45, 0xFD, 0x2C, 0x53, 0x18,
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0x0C, 0xCA, 0xC9, 0xFB, 0x49, 0x37, 0xE5, 0xA8,
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0x51, 0x3B, 0x2F, 0x61, 0xAA, 0x72, 0x18, 0x84,
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0x02, 0x23, 0x23, 0xAB, 0x63, 0x89, 0x51, 0xB3,
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0xE7, 0x8B, 0x72, 0x90, 0x4C, 0xE8, 0xFb, 0xC1};
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|
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|
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ui32_t xor8sum(ui8_t bytes[], int len) {
|
||||
int j;
|
||||
ui8_t xor8 = 0;
|
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ui8_t sum8 = 0;
|
||||
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for (j = 0; j < len; j++) {
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||||
xor8 ^= bytes[j];
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sum8 += bytes[j];
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}
|
||||
//sum8 &= 0xFF;
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|
||||
return (xor8 << 8) | sum8;
|
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}
|
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|
||||
|
||||
#define OFS 6 // xPN9: OFS=8, different baud
|
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|
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int print_frame() {
|
||||
int j;
|
||||
int chkdat, chkval, chk_ok;
|
||||
|
||||
bits2bytes(frame_bits, frame_bytes);
|
||||
|
||||
for (j = 0; j < FRAMELEN; j++) {
|
||||
ui8_t b = frame_bytes[j];
|
||||
//if (j >= 6) b ^= PN9b[(j-6)%64]; // PN9 baud diff
|
||||
xframe[j] = b;
|
||||
}
|
||||
|
||||
chkval = xor8sum(xframe+OFS, 53);
|
||||
chkdat = (xframe[OFS+53]<<8) | xframe[OFS+53+1];
|
||||
chk_ok = (chkdat == chkval);
|
||||
|
||||
if (option_raw) {
|
||||
if (option_raw == 1) {
|
||||
for (j = 0; j < FRAMELEN; j++) {
|
||||
//printf("%02X ", frame_bytes[j]);
|
||||
printf("%02X ", xframe[j]);
|
||||
}
|
||||
printf(" # %s", chk_ok ? "[OK]" : "[NO]");
|
||||
if (option_verbose) printf(" # [%04X:%04X]", chkdat, chkval);
|
||||
}
|
||||
else {
|
||||
for (j = 0; j < BITFRAMELEN; j++) {
|
||||
printf("%c", frame_bits[j]);
|
||||
//if (j % 8 == 7) printf(" ");
|
||||
}
|
||||
}
|
||||
printf("\n");
|
||||
}
|
||||
else {
|
||||
|
||||
ui32_t sn;
|
||||
ui32_t cnt;
|
||||
int val;
|
||||
|
||||
sn = xframe[OFS] | (xframe[OFS+1]<<8) | (xframe[OFS+2]<<16) | (xframe[OFS+3]<<24);
|
||||
|
||||
// counter
|
||||
cnt = xframe[OFS+4] | (xframe[OFS+5]<<8);
|
||||
|
||||
ui8_t frid = xframe[OFS+6];
|
||||
|
||||
if (frid == 2)
|
||||
{
|
||||
// SN ?
|
||||
printf(" (0x%08X) ", sn);
|
||||
|
||||
// counter
|
||||
printf(" [%5d] ", cnt);
|
||||
|
||||
// time/UTC
|
||||
int hms;
|
||||
hms = xframe[OFS+7] | (xframe[OFS+8]<<8) | (xframe[OFS+9]<<16);
|
||||
hms &= 0x3FFFF;
|
||||
//printf(" (%6d) ", hms);
|
||||
ui8_t h = hms / 10000;
|
||||
ui8_t m = (hms % 10000) / 100;
|
||||
ui8_t s = hms % 100;
|
||||
printf(" %02d:%02d:%02d ", h, m, s); // UTC
|
||||
|
||||
// alt
|
||||
val = xframe[OFS+13] | (xframe[OFS+14]<<8) | (xframe[OFS+15]<<16);
|
||||
val &= 0x7FFFFF; // int23 ?
|
||||
val >>= 4;
|
||||
//if (val & 0x3FFFFF) val -= 0x400000;
|
||||
float alt = val / 10.0f;
|
||||
printf(" alt: %.1f ", alt); // MSL
|
||||
|
||||
// lat
|
||||
val = xframe[OFS+15] | (xframe[OFS+16]<<8) | (xframe[OFS+17]<<16) | (xframe[OFS+18]<<24);
|
||||
val >>= 7;
|
||||
val &= 0x3FFFFFF; // int26 ?
|
||||
if (val & 0x2000000) val -= 0x4000000; // sign ?
|
||||
float lat = val / 1e5f;
|
||||
printf(" lat: %.4f ", lat);
|
||||
|
||||
// lon
|
||||
val = xframe[OFS+19] | (xframe[OFS+20]<<8) | (xframe[OFS+21]<<16)| (xframe[OFS+22]<<24);
|
||||
val &= 0x3FFFFFF; // int26 ?
|
||||
if (val & 0x2000000) val -= 0x4000000; // sign ?
|
||||
float lon = val / 1e5f;
|
||||
printf(" lon: %.4f ", lon);
|
||||
|
||||
// checksum
|
||||
printf(" %s", chk_ok ? "[OK]" : "[NO]");
|
||||
if (option_verbose) printf(" # [%04X:%04X]", chkdat, chkval);
|
||||
|
||||
printf("\n");
|
||||
}
|
||||
else if (frid ==1 && option_verbose) {
|
||||
printf(" (0x%08X) ", sn);
|
||||
printf(" [%5d] ", cnt);
|
||||
|
||||
printf(" %s", chk_ok ? "[OK]" : "[NO]");
|
||||
if (option_verbose) printf(" # [%04X:%04X]", chkdat, chkval);
|
||||
|
||||
printf("\n");
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int main(int argc, char **argv) {
|
||||
|
||||
FILE *fp;
|
||||
char *fpname;
|
||||
|
||||
int i, j, h, bit, len;
|
||||
int bit_count, frames;
|
||||
int header_found = 0;
|
||||
|
||||
|
||||
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, " -i\n");
|
||||
fprintf(stderr, " -b\n");
|
||||
return 0;
|
||||
}
|
||||
else if ( (strcmp(*argv, "-i") == 0) || (strcmp(*argv, "--invert") == 0) ) {
|
||||
option_inv = 1;
|
||||
}
|
||||
else if ( (strcmp(*argv, "-v") == 0) || (strcmp(*argv, "--verbose") == 0) ) {
|
||||
option_verbose = 1;
|
||||
}
|
||||
else if (strcmp(*argv, "-b" ) == 0) { option_b = 1; }
|
||||
else if (strcmp(*argv, "-t" ) == 0) { option_timestamp = 1; }
|
||||
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 {
|
||||
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) return -1;
|
||||
|
||||
|
||||
bit_count = 0;
|
||||
frames = 0;
|
||||
while (!read_bits_fsk(fp, &bit, &len)) {
|
||||
|
||||
if (len == 0) {
|
||||
bufpos--;
|
||||
if (bufpos < 0) bufpos = HEADLEN-1;
|
||||
buf[bufpos] = 'x';
|
||||
continue;
|
||||
}
|
||||
|
||||
|
||||
for (j = 0; j < len; j++) {
|
||||
bufpos--;
|
||||
if (bufpos < 0) bufpos = HEADLEN-1;
|
||||
buf[bufpos] = 0x30 + bit;
|
||||
|
||||
if (!header_found)
|
||||
{
|
||||
h = compare(); //h2 = compare2();
|
||||
if ((h >= HEADLEN)) {
|
||||
header_found = 1;
|
||||
fflush(stdout);
|
||||
if (option_timestamp) printf("<%8.3f> ", sample_count/(double)sample_rate);
|
||||
strncpy(frame_bits, header, HEADLEN);
|
||||
bit_count += HEADLEN;
|
||||
frames++;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
frame_bits[bit_count] = 0x30 + bit;
|
||||
bit_count += 1;
|
||||
}
|
||||
|
||||
if (bit_count >= BITFRAMELEN) {
|
||||
bit_count = 0;
|
||||
header_found = 0;
|
||||
|
||||
print_frame();
|
||||
}
|
||||
|
||||
}
|
||||
if (header_found && option_b) {
|
||||
bitstart = 1;
|
||||
|
||||
while ( bit_count < BITFRAMELEN ) {
|
||||
if (read_rawbit(fp, &bit) == EOF) break;
|
||||
frame_bits[bit_count] = 0x30 + bit;
|
||||
bit_count += 1;
|
||||
}
|
||||
|
||||
bit_count = 0;
|
||||
header_found = 0;
|
||||
|
||||
print_frame();
|
||||
}
|
||||
}
|
||||
printf("\n");
|
||||
|
||||
fclose(fp);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
Ładowanie…
Reference in New Issue