124 lines
3.1 KiB
C++
Executable File
124 lines
3.1 KiB
C++
Executable File
/*
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* High Speed modem to transfer data in a 2,7kHz SSB channel
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* =========================================================
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* Author: DJ0ABR
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* made for: AMSAT-DL
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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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* distribution.cpp ... handles priorities for hsmodem TX
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*/
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#include "hsmodem.h"
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#ifdef _LINUX_
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void* dist_function(void* param);
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#endif
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#ifdef _WIN32_
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void dist_function(void* param);
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#endif
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void init_distributor()
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{
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#ifdef _LINUX_
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pthread_t dist_txthread;
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pthread_create(&dist_txthread, NULL, dist_function, NULL);
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#endif
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#ifdef _WIN32_
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_beginthread(dist_function, 0, NULL);
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#endif
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}
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// TX thread
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#ifdef _LINUX_
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void* dist_function(void* param)
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{
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pthread_detach(pthread_self());
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#endif
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#ifdef _WIN32_
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void dist_function(void* param)
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{
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#endif
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uint8_t rxdata[500];
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int circ = 0;
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printf("Distributor running\n");
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while (keeprunning)
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{
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if (ann_running == 0)
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{
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// give all data sources the same priority
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if (++circ >= 5) circ = 0;
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//printf("circ:%d\n", circ);
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int len = 0;
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switch (circ)
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{
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case 0:
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len = read_fifo(PSK_GUI_TX, rxdata, sizeof(rxdata));
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break;
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case 1:
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len = read_fifo(EXT_TX, rxdata, sizeof(rxdata));
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break;
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case 2:
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len = read_fifo(EXT_SPECNB, rxdata, sizeof(rxdata));
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break;
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case 3:
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len = read_fifo(EXT_SPECWB, rxdata, sizeof(rxdata));
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break;
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case 4: sleep_ms(10); //prevent process from eating 100% CPU time
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break;
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}
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if (len > 0) _sendToModulator(rxdata, len);
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}
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else
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{
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sleep_ms(100);
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}
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}
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printf("Distributor exits\n");
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#ifdef _LINUX_
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pthread_exit(NULL); // self terminate this thread
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return NULL;
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#endif
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}
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/*
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* data.. to be sent to _sendToModulator
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* put it into the PSK_GUI_TX fifo
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*/
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void sendPSKdata(uint8_t* data, int len, int fifoID)
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{
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write_fifo(fifoID, data, len);
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//printf("into fifo:%d has now:%d of 100 elements (each 300 bytes long)\n", fifoID, fifo_usedspace(fifoID));
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// wait until sent
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while (keeprunning)
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{
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int us = fifo_usedspace(fifoID);
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if (us <= 2) break;
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sleep_ms(10);
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}
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}
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