mirror of
https://github.com/rtlsdrblog/rtl-sdr-blog.git
synced 2024-11-06 10:47:35 +01:00
add an initial version of rtl_test
This tool allows to check for lost samples (and thus check the USB connection), as well as benchmark the Elonics E4000 tunable range. (-t switch) Signed-off-by: Steve Markgraf <steve@steve-m.de>
This commit is contained in:
Steve Markgraf
parent
73f54be2ed
commit
fdc7bc978b
@ -126,6 +126,16 @@ RTLSDR_API int rtlsdr_set_sample_rate(rtlsdr_dev_t *dev, uint32_t rate);
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*/
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RTLSDR_API uint32_t rtlsdr_get_sample_rate(rtlsdr_dev_t *dev);
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/*!
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* Enable test mode that returns an 8 bit counter instead of the samples.
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* The counter is generated inside the RTL2832.
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*
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* \param dev the device handle given by rtlsdr_open()
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* \param test mode, 1 means enabled, 0 disabled
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* \return 0 on success
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*/
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RTLSDR_API int rtlsdr_set_testmode(rtlsdr_dev_t *dev, int on);
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/* streaming functions */
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RTLSDR_API int rtlsdr_reset_buffer(rtlsdr_dev_t *dev);
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@ -60,6 +60,7 @@ endif()
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########################################################################
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add_executable(rtl_sdr rtl_sdr.c)
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add_executable(rtl_tcp rtl_tcp.c)
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add_executable(rtl_test rtl_test.c)
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target_link_libraries(rtl_sdr rtlsdr_static
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${LIBUSB_LIBRARIES}
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${CMAKE_THREAD_LIBS_INIT}
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@ -68,6 +69,10 @@ target_link_libraries(rtl_tcp rtlsdr_static
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${LIBUSB_LIBRARIES}
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${CMAKE_THREAD_LIBS_INIT}
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)
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target_link_libraries(rtl_test rtlsdr_static
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${LIBUSB_LIBRARIES}
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${CMAKE_THREAD_LIBS_INIT}
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)
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if(WIN32)
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set_property(TARGET rtl_sdr APPEND PROPERTY COMPILE_DEFINITIONS "rtlsdr_STATIC" )
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@ -76,7 +81,7 @@ endif()
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########################################################################
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# Install built library files & utilities
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########################################################################
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install(TARGETS rtlsdr_shared rtlsdr_static rtl_sdr rtl_tcp
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install(TARGETS rtlsdr_shared rtlsdr_static rtl_sdr rtl_tcp rtl_test
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LIBRARY DESTINATION lib${LIB_SUFFIX} # .so/.dylib file
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ARCHIVE DESTINATION lib${LIB_SUFFIX} # .lib file
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RUNTIME DESTINATION bin # .dll file
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@ -10,10 +10,13 @@ lib_LTLIBRARIES = librtlsdr.la
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librtlsdr_la_SOURCES = librtlsdr.c tuner_e4k.c tuner_fc0012.c tuner_fc0013.c tuner_fc2580.c
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librtlsdr_la_LDFLAGS = -version-info $(LIBVERSION)
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bin_PROGRAMS = rtl_sdr rtl_tcp
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bin_PROGRAMS = rtl_sdr rtl_tcp rtl_test
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rtl_sdr_SOURCES = rtl_sdr.c
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rtl_sdr_LDADD = librtlsdr.la
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rtl_tcp_SOURCES = rtl_tcp.c
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rtl_tcp_LDADD = librtlsdr.la
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rtl_test_SOURCES = rtl_tcp.c
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rtl_test_LDADD = librtlsdr.la
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@ -726,6 +726,16 @@ uint32_t rtlsdr_get_sample_rate(rtlsdr_dev_t *dev)
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return dev->rate;
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}
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int rtlsdr_set_testmode(rtlsdr_dev_t *dev, int on)
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{
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if (!dev)
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return -1;
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rtlsdr_demod_write_reg(dev, 0, 0x19, on ? 0x23 : 0x25 , 1);
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return 0;
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}
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rtlsdr_dongle_t *find_known_device(uint16_t vid, uint16_t pid)
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{
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unsigned int i;
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292
src/rtl_test.c
Normal file
292
src/rtl_test.c
Normal file
@ -0,0 +1,292 @@
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/*
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* rtl-sdr, turns your Realtek RTL2832 based DVB dongle into a SDR receiver
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* Copyright (C) 2012 by Steve Markgraf <steve@steve-m.de>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <errno.h>
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#include <signal.h>
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#include <string.h>
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#include <stdio.h>
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#include <stdlib.h>
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#ifndef _WIN32
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#include <unistd.h>
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#else
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#include <Windows.h>
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#endif
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#include "rtl-sdr.h"
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#define DEFAULT_SAMPLE_RATE 2048000
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#define DEFAULT_ASYNC_BUF_NUMBER 32
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#define DEFAULT_BUF_LENGTH (16 * 16384)
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#define MINIMAL_BUF_LENGTH 512
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#define MAXIMAL_BUF_LENGTH (256 * 16384)
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#define MHZ(x) ((x)*1000*1000)
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static int do_exit = 0;
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static rtlsdr_dev_t *dev = NULL;
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void usage(void)
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{
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#ifdef _WIN32
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fprintf(stderr,"rtl-sdr, an I/Q recorder for RTL2832 based USB-sticks\n\n"
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"Usage:\t rtl-sdr-win.exe [device_index] [samplerate in kHz] "
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"[gain] [frequency in Hz] [filename]\n");
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#else
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fprintf(stderr,
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"rtl_test, librtlsdr test tool\n\n"
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"Usage:\n"
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"\t[-s samplerate (default: 2048000 Hz)]\n"
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"\t[-d device_index (default: 0)]\n"
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"\t[-t enable Elonics E4000 tuner benchmark]\n"
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"\t[-b output_block_size (default: 16 * 16384)]\n"
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"\t[-S force sync output (default: async)]\n");
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#endif
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exit(1);
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}
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#ifdef _WIN32
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BOOL WINAPI
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sighandler(int signum)
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{
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if (CTRL_C_EVENT == signum) {
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fprintf(stderr, "Signal caught, exiting!\n");
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do_exit = 1;
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rtlsdr_cancel_async(dev);
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return TRUE;
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}
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return FALSE;
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}
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#else
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static void sighandler(int signum)
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{
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fprintf(stderr, "Signal caught, exiting!\n");
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do_exit = 1;
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rtlsdr_cancel_async(dev);
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}
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#endif
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uint8_t bcnt, uninit = 1;
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static void rtlsdr_callback(unsigned char *buf, uint32_t len, void *ctx)
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{
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uint32_t i, lost = 0;
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if (uninit) {
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bcnt = buf[0];
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uninit = 0;
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}
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for (i = 0; i < len; i++) {
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if(bcnt != buf[i]) {
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lost += (buf[i] > bcnt) ? (buf[i] - bcnt) : (bcnt - buf[i]);
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bcnt = buf[i];
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}
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bcnt++;
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}
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if (lost)
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printf("lost at least %d bytes\n", lost);
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}
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void e4k_benchmark(void)
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{
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uint32_t freq, gap_start = 0, gap_end = 0;
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uint32_t range_start = 0, range_end = 0;
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fprintf(stderr, "Benchmarking E4000 PLL...\n");
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/* find tuner range start */
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for (freq = MHZ(70); freq > MHZ(1); freq -= MHZ(1)) {
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if (rtlsdr_set_center_freq(dev, freq) < 0) {
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range_start = freq;
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break;
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}
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}
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/* find tuner range end */
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for (freq = MHZ(2000); freq < MHZ(2300UL); freq += MHZ(1)) {
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if (rtlsdr_set_center_freq(dev, freq) < 0) {
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range_end = freq;
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break;
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}
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}
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/* find start of L-band gap */
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for (freq = MHZ(1000); freq < MHZ(1300); freq += MHZ(1)) {
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if (rtlsdr_set_center_freq(dev, freq) < 0) {
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gap_start = freq;
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break;
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}
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}
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/* find end of L-band gap */
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for (freq = MHZ(1300); freq > MHZ(1000); freq -= MHZ(1)) {
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if (rtlsdr_set_center_freq(dev, freq) < 0) {
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gap_end = freq;
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break;
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}
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}
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fprintf(stderr, "E4K range: %i to %i MHz\n",
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range_start/MHZ(1) + 1, range_end/MHZ(1) - 1);
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fprintf(stderr, "E4K L-band gap: %i to %i MHz\n",
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gap_start/MHZ(1), gap_end/MHZ(1));
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}
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int main(int argc, char **argv)
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{
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#ifndef _WIN32
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struct sigaction sigact;
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#endif
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int n_read;
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int r, opt;
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int i, tuner_benchmark = 0;
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int sync_mode = 0;
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uint8_t *buffer;
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uint32_t dev_index = 0;
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uint32_t samp_rate = DEFAULT_SAMPLE_RATE;
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uint32_t out_block_size = DEFAULT_BUF_LENGTH;
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int device_count;
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#ifndef _WIN32
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while ((opt = getopt(argc, argv, "d:s:b:tS::")) != -1) {
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switch (opt) {
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case 'd':
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dev_index = atoi(optarg);
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break;
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case 's':
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samp_rate = (uint32_t)atof(optarg);
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break;
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case 'b':
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out_block_size = (uint32_t)atof(optarg);
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break;
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case 't':
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tuner_benchmark = 1;
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break;
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case 'S':
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sync_mode = 1;
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break;
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default:
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usage();
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break;
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}
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}
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#else
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/* TODO fix win usage */
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if (argc < 2)
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usage();
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dev_index = atoi(argv[1]);
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samp_rate = atoi(argv[2])*1000;
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#endif
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if(out_block_size < MINIMAL_BUF_LENGTH ||
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out_block_size > MAXIMAL_BUF_LENGTH ){
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fprintf(stderr,
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"Output block size wrong value, falling back to default\n");
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fprintf(stderr,
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"Minimal length: %u\n", MINIMAL_BUF_LENGTH);
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fprintf(stderr,
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"Maximal length: %u\n", MAXIMAL_BUF_LENGTH);
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out_block_size = DEFAULT_BUF_LENGTH;
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}
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buffer = malloc(out_block_size * sizeof(uint8_t));
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device_count = rtlsdr_get_device_count();
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if (!device_count) {
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fprintf(stderr, "No supported devices found.\n");
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exit(1);
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}
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fprintf(stderr, "Found %d device(s):\n", device_count);
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for (i = 0; i < device_count; i++)
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fprintf(stderr, " %d: %s\n", i, rtlsdr_get_device_name(i));
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fprintf(stderr, "\n");
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fprintf(stderr, "Using device %d: %s\n",
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dev_index,
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rtlsdr_get_device_name(dev_index));
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r = rtlsdr_open(&dev, dev_index);
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if (r < 0) {
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fprintf(stderr, "Failed to open rtlsdr device #%d.\n", dev_index);
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exit(1);
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}
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#ifndef _WIN32
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sigact.sa_handler = sighandler;
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sigemptyset(&sigact.sa_mask);
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sigact.sa_flags = 0;
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sigaction(SIGINT, &sigact, NULL);
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sigaction(SIGTERM, &sigact, NULL);
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sigaction(SIGQUIT, &sigact, NULL);
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sigaction(SIGPIPE, &sigact, NULL);
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#else
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SetConsoleCtrlHandler( (PHANDLER_ROUTINE) sighandler, TRUE );
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#endif
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/* Set the sample rate */
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r = rtlsdr_set_sample_rate(dev, samp_rate);
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if (r < 0)
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fprintf(stderr, "WARNING: Failed to set sample rate.\n");
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if (tuner_benchmark) {
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e4k_benchmark();
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goto exit;
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}
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/* Enable test mode */
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r = rtlsdr_set_testmode(dev, 1);
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/* Reset endpoint before we start reading from it (mandatory) */
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r = rtlsdr_reset_buffer(dev);
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if (r < 0)
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fprintf(stderr, "WARNING: Failed to reset buffers.\n");
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if (sync_mode) {
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fprintf(stderr, "Reading samples in sync mode...\n");
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while (!do_exit) {
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r = rtlsdr_read_sync(dev, buffer, out_block_size, &n_read);
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if (r < 0) {
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fprintf(stderr, "WARNING: sync read failed.\n");
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break;
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}
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if ((uint32_t)n_read < out_block_size) {
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fprintf(stderr, "Short read, samples lost, exiting!\n");
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break;
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}
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}
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} else {
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fprintf(stderr, "Reading samples in async mode...\n");
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r = rtlsdr_read_async(dev, rtlsdr_callback, NULL,
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DEFAULT_ASYNC_BUF_NUMBER, out_block_size);
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}
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if (do_exit)
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fprintf(stderr, "\nUser cancel, exiting...\n");
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else
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fprintf(stderr, "\nLibrary error %d, exiting...\n", r);
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exit:
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rtlsdr_close(dev);
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free (buffer);
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out:
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return r >= 0 ? r : -r;
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}
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