71 lines
2.0 KiB
C++
71 lines
2.0 KiB
C++
/*
|
|
* Adalm Pluto Driver
|
|
* ==================
|
|
* Author: DJ0ABR
|
|
*
|
|
* (c) DJ0ABR
|
|
* www.dj0abr.de
|
|
*
|
|
* 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, write to the Free Software
|
|
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*
|
|
* =========================
|
|
* SSB Receiver
|
|
* =========================
|
|
*
|
|
*/
|
|
|
|
#include "qo100trx.h"
|
|
|
|
int RXoffsetfreq = 280000;
|
|
|
|
void* rx_threadfunction(void* param);
|
|
|
|
void init_rx()
|
|
{
|
|
pthread_t rxthread;
|
|
pthread_create(&rxthread, NULL, rx_threadfunction, NULL);
|
|
}
|
|
|
|
void* rx_threadfunction(void* param)
|
|
{
|
|
pthread_detach(pthread_self());
|
|
|
|
printf("entering RX loop, *** PID:%ld ***\n",syscall(SYS_gettid));
|
|
while(keeprunning)
|
|
{
|
|
uint8_t data[PLUTOBUFSIZE*4];
|
|
if(read_fifo(RXfifo, data, PLUTOBUFSIZE*4))
|
|
{
|
|
// Test: send RX back to TX (Repeater Mode)
|
|
//write_fifo(TXfifo,data,PLUTOBUFSIZE*4);
|
|
|
|
// samples received
|
|
// Pluto RX tuned to 10489,47 (minus LNB and RX mixer)
|
|
// the range is 10489,47 - 10490,03 which covers the full NB band
|
|
|
|
// convert the raw stream into complex samples
|
|
liquid_float_complex samples[PLUTOBUFSIZE];
|
|
streamToSamples(data, PLUTOBUFSIZE*4, samples);
|
|
|
|
// down mix the SSB channel into baseband, demodulate and send to soundcard
|
|
downmix(samples,PLUTOBUFSIZE);
|
|
}
|
|
|
|
usleep(1000);
|
|
}
|
|
printf("exit RX loop\n");
|
|
pthread_exit(NULL); // self terminate this thread
|
|
return NULL;
|
|
} |