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rtl-sdr-blog
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comments and TODOs

master
David 2020-07-10 11:49:53 +09:30
parent 8bc4b3620a
commit 661adcbc28
2 changed files with 10 additions and 3 deletions
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5
README
View File

@ -1,5 +1,6 @@
rtl-sdr rtl-fsk
turns your Realtek RTL2832 based DVB dongle into a SDR receiver Turns your Realtek RTL2832 based DVB dongle into a FSK receiver
Modified version of rtl-sdr-blog
====================================================================== ======================================================================
For more information see: For more information see:

8
src/rtl_fsk.c
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@ -1,5 +1,7 @@
/* /*
* rtl-sdr, turns your Realtek RTL2832 based DVB dongle into a SDR receiver * rtl_fsk, turns your Realtek RTL2832 based DVB dongle into a FSK receiver
*
* Based on rtl_sdr
* Copyright (C) 2012 by Steve Markgraf <steve@steve-m.de> * Copyright (C) 2012 by Steve Markgraf <steve@steve-m.de>
* *
* This program is free software: you can redistribute it and/or modify * This program is free software: you can redistribute it and/or modify
@ -265,7 +267,9 @@ int main(int argc, char **argv)
goto out; goto out;
} }
} }
{ {
/* TODO: make some of these command line options */
int Fs = DEFAULT_SAMPLE_RATE; int Fs = DEFAULT_SAMPLE_RATE;
int Rs = 10000; int Rs = 10000;
int M = 2; int M = 2;
@ -273,6 +277,8 @@ int main(int argc, char **argv)
fsk = fsk_create_hbr(Fs,Rs,M,P,FSK_DEFAULT_NSYM,FSK_NONE,100); fsk = fsk_create_hbr(Fs,Rs,M,P,FSK_DEFAULT_NSYM,FSK_NONE,100);
} }
{ {
/* TODO: fsk_lower might need some adjustment, so we avoid the RTLSDR DC line. We really need a GUI
plot of the spectrum and tone estimates to observe what's going on */
int fsk_lower = 0; int fsk_lower = 0;
int fsk_upper = DEFAULT_SAMPLE_RATE/2; int fsk_upper = DEFAULT_SAMPLE_RATE/2;
fprintf(stderr,"Setting estimator limits to %d to %d Hz.\n", fsk_lower, fsk_upper); fprintf(stderr,"Setting estimator limits to %d to %d Hz.\n", fsk_lower, fsk_upper);