mirror of
https://github.com/n5ac/smartsdr-dsp.git
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247 lines
6.9 KiB
C
247 lines
6.9 KiB
C
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/* *****************************************************************************
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* main.c 2014 SEP 01
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*
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* Author: Graham / KE9H
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* Date created: August 5, 2014
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*
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* Wrapper program for "Embedded FreeDV" including CODEC2.
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*
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* Derived, in part from code provided by David Rowe under LGPL in:
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* freedv_rx.c
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* freedv_tx.c
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*
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* Calls and API defined by David Rowe in
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* freedv_api.c
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* freedv_api.h
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*
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* Portions of this file are Copyright (C) 2014 David Rowe
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*
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* *****************************************************************************
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*
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* Copyright (C) 2014 FlexRadio Systems.
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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 3 of the License, or
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* (at your option) any later version.
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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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* 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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* *****************************************************************************
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* TODO
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* distinguish between rx data and tx data packets?
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* discard rx data and tx data packet if wrong type?
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* get call for S/N
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*
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*
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*
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**************************************************************************** */
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#include <assert.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <errno.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <unistd.h> // usleep()
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#include <netinet/in.h> // ntohl()
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#include <signal.h>
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#include <execinfo.h>
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#include <ucontext.h>
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#include "smartsdr_dsp_api.h"
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#include "common.h"
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const char* APP_NAME = "FreeDV"; // Name of Application
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const char* CFG_FILE = "FreeDV.cfg"; // Name of associated configuration file
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/* This structure mirrors the one found in /usr/include/asm/ucontext.h */
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typedef struct _sig_ucontext {
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unsigned long uc_flags;
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struct ucontext *uc_link;
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stack_t uc_stack;
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struct sigcontext uc_mcontext;
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sigset_t uc_sigmask;
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} sig_ucontext_t;
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extern char *strsignal (int __sig);
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void segfault_sigaction(int signal, siginfo_t *si, void *arg)
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{
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void * array[50];
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char ** messages;
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int size, i;
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sig_ucontext_t * uc;
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uc = (sig_ucontext_t *)arg;
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fprintf(stderr, "\r\n\033[41;37m Caught signal %d (%s) at address 0x%08X\033[m\n", signal, strsignal(signal), (uint32)si->si_addr);
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size = backtrace(array, 50);
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messages = backtrace_symbols(array, size);
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/* skip first stack frame (points here) */
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for (i = 2; i < size && messages != NULL; ++i)
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{
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printf("%d-",i);
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fprintf(stderr, "TRACE: (%d) %s @ ", i, messages[i]);
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// Get's line number of fault
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char syscom[256];
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sprintf(syscom,"eu-addr2line -e %s %p","./freedv" , array[i]);
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system(syscom);
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}
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free(messages);
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exit(EXIT_FAILURE);
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}
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void setup_segfault_handler(void)
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{
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struct sigaction sa;
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memset(&sa, 0, sizeof(struct sigaction));
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sigemptyset(&sa.sa_mask);
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sa.sa_sigaction = segfault_sigaction;
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sa.sa_flags = SA_RESTART | SA_SIGINFO;
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sigaction(SIGSEGV, &sa, NULL);
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// ignore broken pipes
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signal(SIGPIPE, SIG_IGN);
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}
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// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// main()
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int main(void) {
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setup_segfault_handler();
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SmartSDR_API_Init();
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// } // End of Receiver CODER processing
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// else // Transmit ...
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// {
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// // If 'initial' flag, clear buffers TX1, TX2, TX3, TX4
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// if(initial_tx)
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// {
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// TX1_cb->start = 0; // Clear buffers TX1, TX2, TX3, TX4
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// TX1_cb->end = 0;
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// TX2_cb->start = 0;
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// TX2_cb->end = 0;
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// TX3_cb->start = 0;
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// TX3_cb->end = 0;
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// TX4_cb->start = 0;
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// TX4_cb->end = 0;
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// }
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//
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// // Set the receive 'initial' flag
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// initial_rx = 1;
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//
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// // Check for new transmit input packet & move to TX1_cb.
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// // TODO - If receive packet, discard here?
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//
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// if(InputTxPacketReady)
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// {
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// for(i=0;i<128;i++)
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// {
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// // fsample = Get next float from packet;
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// fsample = ntohl(fsample); // TODO issues with/without a cast ???
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// cbWriteFloat(RX1_cb, fsample);
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// }
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// }
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//
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//
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// // Check for >= 384 samples in TX1_cb and spin downsampler
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// // Convert to shorts and move to TX2_cb.
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// if(cfbContains(TX1_cb) >= 384)
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// {
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// for(i=0 ; i<384 ; i++)
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// {
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// float_in[i] = cbReadFloat(TX1_cb);
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// }
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//
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// fdmdv_24_to_8(float_out, float_in, 384);
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//
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// for(i=0 ; i<128 ; i++)
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// {
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// cbWriteShort(TX2_cb, (short) float_out[i]*SCALE);
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// }
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//
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// }
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//
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// // Check for >= 320 samples in TX2_cb and spin vocoder
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// // Move output to TX3_cb.
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// if(csbContains(RX2_cb) >= 320)
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// {
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// for( i=0 ; i<320 ; i++)
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// {
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// speech_in[i] = cbReadShort(TX2_cb);
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// }
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//
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// freedv_tx(_freedvS, mod_out, speech_in);
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//
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// for( i=0 ; i<320 ; i++)
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// {
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// cbWriteShort(RX3_cb, mod_out[i]);
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// }
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// }
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//
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// // Check for >= 128 samples in TX3_cb, convert to float, scale
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// // and spin the upsampler. Move output to TX4_cb.
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//
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// if(csbContains(TX3_cb) >= 128)
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// {
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// for( i=0 ; i<128 ; i++)
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// {
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// float_in[i] = ((float) cbReadShort(TX3_cb)) / SCALE;
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// }
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//
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// fdmdv_8_to_24(float_out, float_in, 384);
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//
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// for( i=0 ; i<384 ; i++)
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// {
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// cbWriteFloat(TX4_cb, float_out[i]);
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// }
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// }
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//
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// // Check for >= 128 samples in TX4_cb. Form packet and
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// // export.
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// if(cfbContains(TX4_cb) >= 128)
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// {
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// for( i=0 ; i<128 ; i++)
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// {
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// // Set up the outbound packet
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// fsample = htonl( cbReadFloat(RX4_cb) );
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// // put the fsample into the outbound packet
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// }
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// }
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//
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// } // End of Transmit CODER processing
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// } // End of CODER ON
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usleep(5000);
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// } // End of WHILE() loop
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while(1) {
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usleep(100000);
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}
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return 1;
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}
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// EoF =====-----
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