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