kopia lustrzana https://github.com/rs1729/RS
simple scan (linux)
Zilog80
rodzic
71dad3babf
commit
4054854f5e
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@ -0,0 +1,25 @@
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/*
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http://askubuntu.com/questions/645/how-do-you-reset-a-usb-device-from-the-command-line
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$ lsusb
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Bus 001 Device 006: ID 0bda:2838 Realtek Semiconductor Corp. RTL2838 DVB-T
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$ (sudo) ./reset_usb /dev/bus/usb/001/006
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*/
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#include <stdio.h>
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#include <fcntl.h>
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#include <sys/ioctl.h>
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#include <linux/usbdevice_fs.h>
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int main(int argc, char **argv) {
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const char *filename;
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int fd;
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filename = argv[1];
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fd = open(filename, O_WRONLY);
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ioctl(fd, USBDEVFS_RESET, 0);
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close(fd);
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return 0;
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}
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@ -0,0 +1,345 @@
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/*
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* detect/identify radiosondes
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* DFM, RS92-SGP, RS41, M10, iMet-1-AB
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*/
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <time.h>
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#ifdef CYGWIN
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#include <fcntl.h> // cygwin: _setmode()
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#include <io.h>
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#endif
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typedef unsigned char ui8_t;
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typedef unsigned int ui32_t;
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time_t rawtime;
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struct tm *gmt;
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int wavloaded = 0,
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option_gmt = 0,
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option_silent = 0;
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#define DFM 2
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#define RS41 3
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#define RS92 4
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#define M10 5
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#define iMet 6
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#define HEADLEN 32
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#define HEADOFS 0 // HEADLEN+HEADOFS=32
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//int dfm_baudrate = 2500;
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char dfm_header[] = "01100101011001101010010110101010";
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//int vai_baudrate = 4800;
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char rs41_header[] = "00001000011011010101001110001000"
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"01000100011010010100100000011111";
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char rs92_header[] = "10100110011001101001"
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"10100110011001101001"
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"10100110011001101001"
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"10100110011001101001"
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"1010011001100110100110101010100110101001";
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//int m10_baudrate = 9600;
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char m10_header[] = "00110011001100110101100110110011";
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//int imet_baudrate = 9600;
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char imet_header[] = "11110000111100001111000011110000"
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"11110000""10101100110010101100101010101100"
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"11110000""10101100110010101100101010101100";
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char buf25[HEADLEN+1] = "x";
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int bufpos25 = -1;
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char buf48[HEADLEN+1] = "x";
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int bufpos48 = -1;
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char buf96[HEADLEN+1] = "x";
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int bufpos96 = -1;
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/* -------------------------------------------------------------------------- */
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int sample_rate = 0, bits_sample = 0, channels = 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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if (!option_silent) {
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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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}
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if ((bits_sample != 8) && (bits_sample != 16)) return -1;
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return 0;
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}
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#define EOF_INT 0x1000000
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int read_signed_sample(FILE *fp) { // int = i32_t
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int byte, i, ret; // 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 == 0) ret = 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 == 0) ret += byte << 8;
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}
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}
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if (bits_sample == 8) return ret-128;
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if (bits_sample == 16) return (short)ret;
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return ret;
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}
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int par=1, par_alt=1;
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unsigned long sample_count = 0;
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int read_bits_fsk(FILE *fp, int *bit, int *len) {
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int n, sample;
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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++;
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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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*len = n;
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*bit = (1+par_alt)/2; // oben 1, unten -1
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//*bit = (1-par_alt)/2;// sdr#<rev1381?, invers: unten 1, oben -1
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return 0;
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}
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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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void inc_buf(int *bufpos) {
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*bufpos = (*bufpos+1) % HEADLEN;
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}
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int compare(char buf[], char header[], int bufpos) {
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int i, j;
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i = 0;
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j = bufpos;
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while (i < HEADLEN) {
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if (j < 0) j = HEADLEN-1;
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if (buf[j] != header[HEADOFS+HEADLEN-1-i]) break;
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j--;
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i++;
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}
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if (i == HEADLEN) return 1;
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i = 0;
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j = bufpos;
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while (i < HEADLEN) {
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if (j < 0) j = HEADLEN-1;
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if (buf[j] != inv(header[HEADOFS+HEADLEN-1-i])) break;
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j--;
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i++;
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}
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if (i == HEADLEN) return -1;
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return 0;
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}
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/* -------------------------------------------------------------------------- */
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int main(int argc, char **argv) {
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FILE *fp;
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char *fpname;
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int header_found, bit, len, i;
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int len25, len48, len96;
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int zeit = 0;
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#ifdef CYGWIN
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_setmode(fileno(stdin), _O_BINARY); // _setmode(_fileno(stdin), _O_BINARY);
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setbuf(stdout, NULL);
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#endif
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fpname = argv[0];
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++argv;
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while ((*argv) && (!wavloaded)) {
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if ( (strcmp(*argv, "-h") == 0) || (strcmp(*argv, "--help") == 0) ) {
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fprintf(stderr, "%s [-t nn] audio.wav\n", fpname);
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return 0;
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}
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else if ( (strcmp(*argv, "-s") == 0) || (strcmp(*argv, "--silent") == 0) ) {
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option_silent = 1;
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}
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else if ( (strcmp(*argv, "-z") == 0) || (strcmp(*argv, "--zulu") == 0) ) {
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option_gmt = 1;
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}
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else if ( (strcmp(*argv, "-t") == 0) || (strcmp(*argv, "--time") == 0) ) {
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++argv;
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if (*argv) zeit = atoi(*argv);
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else return -1;
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}
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else {
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fp = fopen(*argv, "rb");
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if (fp == NULL) {
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fprintf(stderr, "%s konnte nicht geoeffnet werden\n", *argv);
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return -1;
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}
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wavloaded = 1;
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}
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++argv;
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}
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if (!wavloaded) fp = stdin;
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i = read_wav_header(fp);
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if (i) {
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fclose(fp);
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return -1;
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}
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header_found = 0;
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while (!read_bits_fsk(fp, &bit, &len) && !header_found) {
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len25 = (int) (len * 2500.0 / sample_rate + 0.5);
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len48 = (int) (len * 4800.0 / sample_rate + 0.5);
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len96 = (int) (len * 9600.0 / sample_rate + 0.5);
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for (i = 0; i < len25; i++) {
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inc_buf(&bufpos25);
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buf25[bufpos25] = 0x30 + bit; // Ascii
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header_found = compare(buf25, dfm_header, bufpos25) * DFM;
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if (header_found) goto ende;
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}
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for (i = 0; i < len48; i++) {
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inc_buf(&bufpos48);
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buf48[bufpos48] = 0x30 + bit; // Ascii
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header_found = compare(buf48, rs41_header+16, bufpos48) * RS41;
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if (header_found) goto ende;
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header_found = compare(buf48, rs92_header, bufpos48) * RS92;
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if (header_found) goto ende;
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}
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for (i = 0; i < len96; i++) {
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inc_buf(&bufpos96);
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buf96[bufpos96] = 0x30 + bit; // Ascii
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header_found = compare(buf96, m10_header, bufpos96) * M10;
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if (header_found) goto ende;
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header_found = compare(buf96, imet_header+32, bufpos96) * iMet;
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if (header_found) goto ende;
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}
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if (zeit > 0 && sample_count > zeit*sample_rate) goto ende;
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}
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ende:
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fclose(fp);
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if (!option_silent) {
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printf("sample: %lu\n", sample_count);
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if (zeit) printf("%ds = %d samples\n", zeit, zeit*sample_rate);
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printf("found: ");
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if (!header_found) printf("NO");
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else {
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time(&rawtime);
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gmt = gmtime(&rawtime);
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if (header_found < 0) printf("-");
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if (header_found*header_found == DFM*DFM) printf("DFM");
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if (header_found*header_found == RS41*RS41) printf("RS41");
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if (header_found*header_found == RS92*RS92) printf("RS92");
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if (header_found*header_found == M10*M10) printf("M10");
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if (header_found*header_found == iMet*iMet) printf("iMet");
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if (option_gmt) {
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printf(" (%4d-%02d-%02d %02d:%02dZ) ", gmt->tm_year+1900, gmt->tm_mon,
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gmt->tm_mday, gmt->tm_hour, gmt->tm_min);
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}
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}
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printf("\n");
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}
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return header_found;
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}
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@ -0,0 +1,227 @@
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#!/usr/bin/env perl
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use strict;
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use warnings;
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use POSIX qw(strftime);
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## rs_detect.c return:
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## #define DFM 2
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## #define RS41 3
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## #define RS92 4
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## #define M10 5
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## #define iMet 6
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my $log_dir = "log";
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my $utc = strftime('%Y%m%d_%H%M%S', gmtime);
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print $utc, "UTC", "\n";
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my $powfile = sprintf "log_power\.csv";
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my $ppm = 54;
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my $fos = 403200000 * ( 1 + $ppm/1000000 ); # 403.2MHz-Linie
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my $scan_f1 = "400.6M";
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my $scan_f2 = "405.9M";
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my $line;
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my @fields;
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my $date;
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my $time;
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my $f1;
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my $f2;
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my $f;
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my $step;
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my @db;
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my $i;
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my $j;
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my $peak = 0;
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my $peak_start;
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my $peak_end = 0;
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my $freq;
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my $ret;
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my $inv;
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my $dec;
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my $wavfile;
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my $filter;
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my $breite = "";
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my $rs;
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my $WFM;
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my $squelch;
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my $snr = 6;
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my @peakarray;
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my $num_peaks;
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print "[rtl_power: scan $scan_f1:$scan_f2]\n";
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system("timeout 30 rtl_power -p $ppm -f $scan_f1:$scan_f2:800 -i20 -1 $powfile 2>/dev/null");
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if ( $? == -1 ) {
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print "Fehler: $!\n";
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}
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my $fh;
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open ($fh, '<', "$powfile") or die "Kann '$powfile' nicht oeffnen: $!\n";
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@peakarray = ();
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my $num_lines = 0;
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while ($line = <$fh>) {
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$num_lines += 1;
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chomp $line;
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@db = split(",", $line);
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$date = $db[0];
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shift @db;
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$time = $db[0];
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shift @db;
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$f1 = $db[0];
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shift @db;
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$f2 = $db[0];
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shift @db;
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$step = $db[0];
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shift @db;
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shift @db;
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my $sum = eval join '+', @db;
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my $mean = $sum / scalar(@db);
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#printf "level: %.1f\n", $mean;
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$squelch = $mean + $snr;
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$peak = 0;
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$peak_start = $peak_end = 0;
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for ($j = 0; $j < scalar(@db)-1; $j++) {
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if ($db[$j] > $squelch) {
|
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if ($peak == 0) {
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$peak_start = $f1 + $j*$step;
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}
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$peak = 1;
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}
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elsif ($peak > 0) {
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if ($db[$j+1] <= $squelch) {
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$peak_end = $f1 + ($j-1)*$step;
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$peak = 0;
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}
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if ($peak_start < $peak_end) {
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$freq = $peak_start + ($peak_end-$peak_start)/2;
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if ( !($freq > $fos-1000 && $freq < $fos+1000) ) { ## 403.2MHz-Linie auslassen
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push @peakarray, $freq;
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}
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}
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}
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}
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}
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close $fh;
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|
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if ($num_lines == 0) {
|
||||
print "[reset dvb-t ...]\n";
|
||||
reset_dvbt();
|
||||
}
|
||||
else {
|
||||
$num_peaks = scalar(@peakarray);
|
||||
for ($j = 0; $j < $num_peaks-1; $j++) {
|
||||
if ($peakarray[$j+1]-$peakarray[$j] < 10e3) { # DFM peak-to-peak: 6kHz
|
||||
push @peakarray, $peakarray[$j]+($peakarray[$j+1]-$peakarray[$j])/2;
|
||||
}
|
||||
elsif ($peakarray[$j+1]-$peakarray[$j] < 34e3) { # iMet peak-to-peak: 24kHz
|
||||
push @peakarray, $peakarray[$j]+($peakarray[$j+1]-$peakarray[$j])/2;
|
||||
}
|
||||
}
|
||||
|
||||
print "[rtl_fm: detect/decode]\n";
|
||||
|
||||
for ($j = 0; $j < $num_peaks; $j++) {
|
||||
|
||||
$freq = sprintf "%.0f", $peakarray[$j];
|
||||
|
||||
eval {
|
||||
local $SIG{ALRM} = sub {die "alarm\n"};
|
||||
alarm 30; # beide Bandbreiten
|
||||
print "\n$freq Hz: "; # detect ohne highpass 20
|
||||
system("timeout 12s rtl_fm -p $ppm -M fm -s 15k -f $freq 2>/dev/null |\
|
||||
sox -t raw -r 15k -e s -b 16 -c 1 - -r 48000 -t wav - 2>/dev/null |\
|
||||
./rs_detect -s -z -t 8 2>/dev/null");
|
||||
$ret = $? >> 8;
|
||||
if (!$ret) { # mehr Bandbreite bei iMet
|
||||
system("timeout 12s rtl_fm -p $ppm -M fm -s 36k -o 4 -f $freq 2>/dev/null |\
|
||||
sox -t raw -r 36k -e s -b 16 -c 1 - -r 48000 -t wav - 2>/dev/null |\
|
||||
./rs_detect -s -z -t 8 2>/dev/null");
|
||||
$ret = $? >> 8;
|
||||
}
|
||||
alarm 0;
|
||||
};
|
||||
if ($@) {
|
||||
die unless $@ =~ /alarm/;
|
||||
reset_dvbt();
|
||||
print "[reset dvb-t ...]\n";
|
||||
}
|
||||
|
||||
if ($ret) {
|
||||
if ($ret & 0x80) {
|
||||
$inv = '-i';
|
||||
$ret = - (0x100 - $ret); # obwohl ($ret & 0x80) = core dump
|
||||
}
|
||||
else { $inv = ''; }
|
||||
$rs = "";
|
||||
$WFM = "";
|
||||
if (abs($ret) == 2) { $rs = "dfm"; $breite = "15k"; $dec = './dfm06 -v'; $filter = "lowpass 2000 highpass 20"; }
|
||||
if (abs($ret) == 3) { $rs = "rs41"; $breite = "12k"; $dec = './rs41stdin -v'; $filter = "lowpass 2600"; }
|
||||
if (abs($ret) == 4) { $rs = "rs92"; $breite = "12k"; $dec = './rs92gps -g -v -a almanac.txt'; $filter = "lowpass 2500 highpass 20"; }
|
||||
if (abs($ret) == 5) { $rs = "m10"; $breite = "24k"; $dec = './m10x -v'; $filter = "highpass 20"; }
|
||||
if (abs($ret) == 6) { $rs = "imet"; $breite = "40k"; $dec = './imet1ab -v'; $filter = "highpass 20"; $WFM = "-o 4"; }
|
||||
if ($inv) { print "-";} print uc($rs)," ($utc)\n";
|
||||
$utc = strftime('%Y%m%d_%H%M%S', gmtime);
|
||||
$wavfile = $rs."-".$utc."Z-".$freq."Hz.wav";
|
||||
if ($rs) {
|
||||
system("timeout 30s rtl_fm -p $ppm -M fm $WFM -s $breite -f $freq 2>/dev/null |\
|
||||
sox -t raw -r $breite -e s -b 16 -c 1 - -r 48000 -b 8 -t wav - $filter 2>/dev/null |\
|
||||
tee $log_dir/$wavfile | $dec $inv 2>/dev/null");
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
print "\n";
|
||||
}
|
||||
|
||||
print "\n=\n";
|
||||
|
||||
|
||||
## $snr: peak sensitivity: wenn zu niedrig, viele Kandidaten;
|
||||
## wenn zu hoch, zu wenige (rs41 sendet nur 1/2 sek.
|
||||
## andere Methoden:
|
||||
## Fenster/Bandbreite aufsummieren/integrieren; Schwerpunkt;
|
||||
## rtl-sdr IQ-Band: 1 Minute aufnehmen und dann analysieren/scannen.
|
||||
##
|
||||
## rs92: aktuellen (SEM) almanac.txt
|
||||
## wenn brdc-emphemerides (-e) benutzt werden, darauf achten, dass diese
|
||||
## aktuell sind, wenn ueber laengeren Zeitraum gescannt wird
|
||||
##
|
||||
## rs_detect.c und decoder: gleiche Polaritaet in read_bits_fsk(),
|
||||
## am besten als gemeinsame include-Datei wav_audio.c
|
||||
###################################################################################################
|
||||
|
||||
|
||||
## http://askubuntu.com/questions/645/how-do-you-reset-a-usb-device-from-the-command-line
|
||||
## usbreset.c -> reset_usb
|
||||
sub reset_dvbt {
|
||||
my @devices = split("\n",`lsusb`);
|
||||
foreach my $line (@devices) {
|
||||
if ($line =~ /\w+\s(\d+)\s\w+\s(\d+):\sID\s([0-9a-f]+):([0-9a-f]+).+Realtek Semiconductor Corp\./) {
|
||||
if ($4 eq "2832" || $4 eq "2838") {
|
||||
system("./reset_usb /dev/bus/usb/$1/$2");
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
Ładowanie…
Reference in New Issue