X-Git-Url: https://git.rvb.name/rtl-433.git/blobdiff_plain/7771049ddd733b759484442a3b10ade8faea75ff..337eb4ba945097205fbb6a3ca7912fb0697092d1:/src/rtl_test.c diff --git a/src/rtl_test.c b/src/rtl_test.c deleted file mode 100644 index fa54628..0000000 --- a/src/rtl_test.c +++ /dev/null @@ -1,379 +0,0 @@ -/* - * rtl-sdr, turns your Realtek RTL2832 based DVB dongle into a SDR receiver - * Copyright (C) 2012 by Steve Markgraf - * - * This program is free software: you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation, either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see . - */ - -#include -#include -#include -#include -#include -#include - -#ifdef __APPLE__ -#include -#else -#include -#endif - -#ifndef _WIN32 -#include -#else -#include -#include "getopt/getopt.h" -#endif - -#include "rtl-sdr.h" - -#define DEFAULT_SAMPLE_RATE 2048000 -#define DEFAULT_ASYNC_BUF_NUMBER 32 -#define DEFAULT_BUF_LENGTH (16 * 16384) -#define MINIMAL_BUF_LENGTH 512 -#define MAXIMAL_BUF_LENGTH (256 * 16384) - -#define MHZ(x) ((x)*1000*1000) - -#define PPM_DURATION 10 - -static int do_exit = 0; -static rtlsdr_dev_t *dev = NULL; - -static int ppm_benchmark = 0; -static int64_t ppm_count = 0L; -static int64_t ppm_total = 0L; - -#ifndef _WIN32 -static struct timespec ppm_start; -static struct timespec ppm_recent; -static struct timespec ppm_now; -#endif - -#ifdef __APPLE__ -static struct timeval tv; -#endif - -void usage(void) -{ - fprintf(stderr, - "rtl_test, a benchmark tool for RTL2832 based DVB-T receivers\n\n" - "Usage:\n" - "\t[-s samplerate (default: 2048000 Hz)]\n" - "\t[-d device_index (default: 0)]\n" - "\t[-t enable Elonics E4000 tuner benchmark]\n" - #ifndef _WIN32 - "\t[-p enable PPM error measurement]\n" - #endif - "\t[-b output_block_size (default: 16 * 16384)]\n" - "\t[-S force sync output (default: async)]\n"); - exit(1); -} - -#ifdef _WIN32 -BOOL WINAPI -sighandler(int signum) -{ - if (CTRL_C_EVENT == signum) { - fprintf(stderr, "Signal caught, exiting!\n"); - do_exit = 1; - rtlsdr_cancel_async(dev); - return TRUE; - } - return FALSE; -} -#else -static void sighandler(int signum) -{ - fprintf(stderr, "Signal caught, exiting!\n"); - do_exit = 1; - rtlsdr_cancel_async(dev); -} -#endif - -uint8_t bcnt, uninit = 1; - -static void rtlsdr_callback(unsigned char *buf, uint32_t len, void *ctx) -{ - uint32_t i, lost = 0; - int64_t ns; - - if (uninit) { - bcnt = buf[0]; - uninit = 0; - } - - for (i = 0; i < len; i++) { - if(bcnt != buf[i]) { - lost += (buf[i] > bcnt) ? (buf[i] - bcnt) : (bcnt - buf[i]); - bcnt = buf[i]; - } - - bcnt++; - } - - if (lost) - printf("lost at least %d bytes\n", lost); - - if (!ppm_benchmark) { - return; - } - ppm_count += (int64_t)len; -#ifndef _WIN32 - #ifndef __APPLE__ - clock_gettime(CLOCK_REALTIME, &ppm_now); - #else - gettimeofday(&tv, NULL); - ppm_now.tv_sec = tv.tv_sec; - ppm_now.tv_nsec = tv.tv_usec*1000; - #endif - if (ppm_now.tv_sec - ppm_recent.tv_sec > PPM_DURATION) { - ns = 1000000000L * (int64_t)(ppm_now.tv_sec - ppm_recent.tv_sec); - ns += (int64_t)(ppm_now.tv_nsec - ppm_recent.tv_nsec); - printf("real sample rate: %i\n", - (int)((1000000000L * ppm_count / 2L) / ns)); - #ifndef __APPLE__ - clock_gettime(CLOCK_REALTIME, &ppm_recent); - #else - gettimeofday(&tv, NULL); - ppm_recent.tv_sec = tv.tv_sec; - ppm_recent.tv_nsec = tv.tv_usec*1000; - #endif - ppm_total += ppm_count / 2L; - ppm_count = 0L; - } -#endif -} - -void e4k_benchmark(void) -{ - uint32_t freq, gap_start = 0, gap_end = 0; - uint32_t range_start = 0, range_end = 0; - - fprintf(stderr, "Benchmarking E4000 PLL...\n"); - - /* find tuner range start */ - for (freq = MHZ(70); freq > MHZ(1); freq -= MHZ(1)) { - if (rtlsdr_set_center_freq(dev, freq) < 0) { - range_start = freq; - break; - } - } - - /* find tuner range end */ - for (freq = MHZ(2000); freq < MHZ(2300UL); freq += MHZ(1)) { - if (rtlsdr_set_center_freq(dev, freq) < 0) { - range_end = freq; - break; - } - } - - /* find start of L-band gap */ - for (freq = MHZ(1000); freq < MHZ(1300); freq += MHZ(1)) { - if (rtlsdr_set_center_freq(dev, freq) < 0) { - gap_start = freq; - break; - } - } - - /* find end of L-band gap */ - for (freq = MHZ(1300); freq > MHZ(1000); freq -= MHZ(1)) { - if (rtlsdr_set_center_freq(dev, freq) < 0) { - gap_end = freq; - break; - } - } - - fprintf(stderr, "E4K range: %i to %i MHz\n", - range_start/MHZ(1) + 1, range_end/MHZ(1) - 1); - - fprintf(stderr, "E4K L-band gap: %i to %i MHz\n", - gap_start/MHZ(1), gap_end/MHZ(1)); -} - -int main(int argc, char **argv) -{ -#ifndef _WIN32 - struct sigaction sigact; -#endif - int n_read; - int r, opt; - int i, tuner_benchmark = 0; - int sync_mode = 0; - uint8_t *buffer; - uint32_t dev_index = 0; - uint32_t samp_rate = DEFAULT_SAMPLE_RATE; - uint32_t out_block_size = DEFAULT_BUF_LENGTH; - int device_count; - int count; - int gains[100]; - int real_rate; - int64_t ns; - - while ((opt = getopt(argc, argv, "d:s:b:tpS::")) != -1) { - switch (opt) { - case 'd': - dev_index = atoi(optarg); - break; - case 's': - samp_rate = (uint32_t)atof(optarg); - break; - case 'b': - out_block_size = (uint32_t)atof(optarg); - break; - case 't': - tuner_benchmark = 1; - break; - case 'p': - ppm_benchmark = PPM_DURATION; - break; - case 'S': - sync_mode = 1; - break; - default: - usage(); - break; - } - } - - if(out_block_size < MINIMAL_BUF_LENGTH || - out_block_size > MAXIMAL_BUF_LENGTH ){ - fprintf(stderr, - "Output block size wrong value, falling back to default\n"); - fprintf(stderr, - "Minimal length: %u\n", MINIMAL_BUF_LENGTH); - fprintf(stderr, - "Maximal length: %u\n", MAXIMAL_BUF_LENGTH); - out_block_size = DEFAULT_BUF_LENGTH; - } - - buffer = malloc(out_block_size * sizeof(uint8_t)); - - device_count = rtlsdr_get_device_count(); - if (!device_count) { - fprintf(stderr, "No supported devices found.\n"); - exit(1); - } - - fprintf(stderr, "Found %d device(s):\n", device_count); - for (i = 0; i < device_count; i++) - fprintf(stderr, " %d: %s\n", i, rtlsdr_get_device_name(i)); - fprintf(stderr, "\n"); - - fprintf(stderr, "Using device %d: %s\n", - dev_index, - rtlsdr_get_device_name(dev_index)); - - r = rtlsdr_open(&dev, dev_index); - if (r < 0) { - fprintf(stderr, "Failed to open rtlsdr device #%d.\n", dev_index); - exit(1); - } -#ifndef _WIN32 - sigact.sa_handler = sighandler; - sigemptyset(&sigact.sa_mask); - sigact.sa_flags = 0; - sigaction(SIGINT, &sigact, NULL); - sigaction(SIGTERM, &sigact, NULL); - sigaction(SIGQUIT, &sigact, NULL); - sigaction(SIGPIPE, &sigact, NULL); -#else - SetConsoleCtrlHandler( (PHANDLER_ROUTINE) sighandler, TRUE ); -#endif - count = rtlsdr_get_tuner_gains(dev, NULL); - fprintf(stderr, "Supported gain values (%d): ", count); - - count = rtlsdr_get_tuner_gains(dev, gains); - for (i = 0; i < count; i++) - fprintf(stderr, "%.1f ", gains[i] / 10.0); - fprintf(stderr, "\n"); - - /* Set the sample rate */ - r = rtlsdr_set_sample_rate(dev, samp_rate); - if (r < 0) - fprintf(stderr, "WARNING: Failed to set sample rate.\n"); - - if (tuner_benchmark) { - if (rtlsdr_get_tuner_type(dev) == RTLSDR_TUNER_E4000) - e4k_benchmark(); - else - fprintf(stderr, "No E4000 tuner found, aborting.\n"); - - goto exit; - } - - /* Enable test mode */ - r = rtlsdr_set_testmode(dev, 1); - - /* Reset endpoint before we start reading from it (mandatory) */ - r = rtlsdr_reset_buffer(dev); - if (r < 0) - fprintf(stderr, "WARNING: Failed to reset buffers.\n"); - - if (ppm_benchmark && !sync_mode) { - fprintf(stderr, "Reporting PPM error measurement every %i seconds...\n", ppm_benchmark); - fprintf(stderr, "Press ^C after a few minutes.\n"); -#ifdef __APPLE__ - gettimeofday(&tv, NULL); - ppm_recent.tv_sec = tv.tv_sec; - ppm_recent.tv_nsec = tv.tv_usec*1000; - ppm_start.tv_sec = tv.tv_sec; - ppm_start.tv_nsec = tv.tv_usec*1000; -#elif __unix__ - clock_gettime(CLOCK_REALTIME, &ppm_recent); - clock_gettime(CLOCK_REALTIME, &ppm_start); -#endif - } - - if (sync_mode) { - fprintf(stderr, "Reading samples in sync mode...\n"); - while (!do_exit) { - r = rtlsdr_read_sync(dev, buffer, out_block_size, &n_read); - if (r < 0) { - fprintf(stderr, "WARNING: sync read failed.\n"); - break; - } - - if ((uint32_t)n_read < out_block_size) { - fprintf(stderr, "Short read, samples lost, exiting!\n"); - break; - } - } - } else { - fprintf(stderr, "Reading samples in async mode...\n"); - r = rtlsdr_read_async(dev, rtlsdr_callback, NULL, - DEFAULT_ASYNC_BUF_NUMBER, out_block_size); - } - - if (do_exit) { - fprintf(stderr, "\nUser cancel, exiting...\n"); - if (ppm_benchmark) { -#ifndef _WIN32 - ns = 1000000000L * (int64_t)(ppm_recent.tv_sec - ppm_start.tv_sec); - ns += (int64_t)(ppm_recent.tv_nsec - ppm_start.tv_nsec); - real_rate = (int)(ppm_total * 1000000000L / ns); - printf("Cumulative PPM error: %i\n", - (int)round((double)(1000000 * (real_rate - (int)samp_rate)) / (double)samp_rate)); -#endif - } - } - else - fprintf(stderr, "\nLibrary error %d, exiting...\n", r); - -exit: - rtlsdr_close(dev); - free (buffer); - - return r >= 0 ? r : -r; -}