kopia lustrzana https://github.com/F5OEO/rpitx
Calculate harmonic
rodzic
94d6792920
commit
ab2917e745
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@ -36,8 +36,9 @@ fprintf(stderr,\
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"\ndvbrf -%s\n\
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Usage:\ndvbrf [-i File Input][-s Samplerate][-l] [-f Frequency] [-h Harmonic number] \n\
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-i path to Transport Stream File Input \n\
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-s SampleRate 10000-250000 \n\
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-s SampleRate 10000-1000000 \n\
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-c Fec : {1/2,3/4,5/6,7/8} \n\
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-c Mode : {dvbs,dvbs2} \n\
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-f float central frequency Hz(50 kHz to 1500 MHz),\n\
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-l loop mode for file input\n\
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-n Use harmonic number n\n\
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@ -57,7 +58,8 @@ terminate(int num)
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}
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#define MAX_SAMPLERATE 2000000
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#define MAX_SAMPLERATE 1000000
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#define MAX_FREQUENCY 1e9
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int main(int argc, char* argv[])
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{
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@ -74,6 +76,7 @@ int main(int argc, char* argv[])
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int FEC=-1;
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enum {DVBS,DVBS2};
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int DVB_Mode=DVBS;//
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int nbphase=4;
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while(1)
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{
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a = getopt(argc, argv, "i:f:s:n:lt:c:m:");
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@ -113,7 +116,7 @@ int main(int argc, char* argv[])
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if(strcmp("carrier",optarg)==0) {fprintf(stderr,"Carrier mode\n");FEC=0;}//CARRIER MODE
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break;
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case 'm': // FEC
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case 'm': // Mode
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if(strcmp("dvbs",optarg)==0) DVB_Mode=DVBS;
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if(strcmp("dvbs2",optarg)==0) DVB_Mode=DVBS2;
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break;
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@ -166,6 +169,13 @@ int main(int argc, char* argv[])
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exit(0);
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}
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while(SetFrequency*(float)(nbphase*2)/(float)Harmonic>1e9)
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{
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Harmonic+=2;
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}
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if(Harmonic>1)
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fprintf(stderr,"Using harmonic %d : main frequency=%0.f\n",Harmonic,SetFrequency/(float)Harmonic);
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if(DVB_Mode==DVBS)
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{
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int FifoSize=204*100*4;
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