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git://projects.qi-hardware.com/ben-wpan.git
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e445fe1b01
- usrp/d.c: reduce the number of data points in a file produced by usrp2_rx_cfile.py and print them as text suitable for gnuplot - usrp/p.c: determine the peak amplitude in a series of transmissions, filtering noise and artefacts at the beginning of the data file - usrp/step: step through all channels and measure TX power (for antenna tuning) - usrp/Makefile: built "p" and "d"
34 lines
406 B
C
34 lines
406 B
C
#include <stdio.h>
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#include <math.h>
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#define N 100
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int main(int argc, char **argv)
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{
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float c[2];
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int n = 0;
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float sum = 0;
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size_t s;
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while (1) {
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s = fread(c, sizeof(c), 1, stdin);
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if (!s) {
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if (!ferror(stdin))
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break;
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if (s < 0) {
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perror("read");
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return 1;
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}
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}
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sum += hypot(c[0], c[1]);
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if (n++ % N)
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continue;
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printf("%f\n", sum/N);
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sum = 0;
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}
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return 0;
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}
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