FreeCalypso > hg > freecalypso-reveng
annotate miscprog/osmo2psi.c @ 227:bb86424f78e6
current-draw: checking in experiment results
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Sun, 17 Dec 2017 19:30:22 +0000 |
parents | 63c5bb42eca5 |
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osmo2psi test program written
Mychaela Falconia <falcon@freecalypso.org>
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1 /* |
63c5bb42eca5
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Mychaela Falconia <falcon@freecalypso.org>
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2 * This test program seeks to help figure out the mapping between OsmocomBB's |
63c5bb42eca5
osmo2psi test program written
Mychaela Falconia <falcon@freecalypso.org>
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3 * AFC_SLOPE constant and the Psi constants used by TI's AFC implementation, |
63c5bb42eca5
osmo2psi test program written
Mychaela Falconia <falcon@freecalypso.org>
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4 * as our fc-rfcal-vcxo tool would compute them from CMU200 measurements. |
63c5bb42eca5
osmo2psi test program written
Mychaela Falconia <falcon@freecalypso.org>
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5 */ |
63c5bb42eca5
osmo2psi test program written
Mychaela Falconia <falcon@freecalypso.org>
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6 |
63c5bb42eca5
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Mychaela Falconia <falcon@freecalypso.org>
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7 #include <math.h> |
63c5bb42eca5
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8 #include <stdio.h> |
63c5bb42eca5
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Mychaela Falconia <falcon@freecalypso.org>
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9 #include <stdlib.h> |
63c5bb42eca5
osmo2psi test program written
Mychaela Falconia <falcon@freecalypso.org>
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10 |
63c5bb42eca5
osmo2psi test program written
Mychaela Falconia <falcon@freecalypso.org>
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11 main(argc, argv) |
63c5bb42eca5
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Mychaela Falconia <falcon@freecalypso.org>
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12 char **argv; |
63c5bb42eca5
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Mychaela Falconia <falcon@freecalypso.org>
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13 { |
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Mychaela Falconia <falcon@freecalypso.org>
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14 int afc_slope; |
63c5bb42eca5
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Mychaela Falconia <falcon@freecalypso.org>
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15 float lin_a; |
63c5bb42eca5
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Mychaela Falconia <falcon@freecalypso.org>
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16 float Psi_sta, Psi_st; |
63c5bb42eca5
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Mychaela Falconia <falcon@freecalypso.org>
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17 |
63c5bb42eca5
osmo2psi test program written
Mychaela Falconia <falcon@freecalypso.org>
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18 if (argc != 2) { |
63c5bb42eca5
osmo2psi test program written
Mychaela Falconia <falcon@freecalypso.org>
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19 fprintf(stderr, "usage: %s osmo-afc-slope\n", argv[0]); |
63c5bb42eca5
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Mychaela Falconia <falcon@freecalypso.org>
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20 exit(1); |
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Mychaela Falconia <falcon@freecalypso.org>
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21 } |
63c5bb42eca5
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Mychaela Falconia <falcon@freecalypso.org>
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22 afc_slope = atoi(argv[1]); |
63c5bb42eca5
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Mychaela Falconia <falcon@freecalypso.org>
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23 lin_a = (float)afc_slope / 32768.0f * 898.0f; |
63c5bb42eca5
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Mychaela Falconia <falcon@freecalypso.org>
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24 |
63c5bb42eca5
osmo2psi test program written
Mychaela Falconia <falcon@freecalypso.org>
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25 /* Psi computations */ |
63c5bb42eca5
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Mychaela Falconia <falcon@freecalypso.org>
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26 Psi_sta = 2.0f * (float)M_PI * lin_a / 270833.0f; |
63c5bb42eca5
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Mychaela Falconia <falcon@freecalypso.org>
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27 Psi_st = Psi_sta * 0.8f; |
63c5bb42eca5
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Mychaela Falconia <falcon@freecalypso.org>
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28 |
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29 printf("Psi_sta_inv = %u\n", (unsigned)(1.0f / Psi_sta)); |
63c5bb42eca5
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Mychaela Falconia <falcon@freecalypso.org>
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30 printf("Psi_st = %u\n", (unsigned)(Psi_st * 65536.0f)); |
63c5bb42eca5
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Mychaela Falconia <falcon@freecalypso.org>
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31 printf("Psi_st_32 = %u\n", (unsigned)(Psi_st * 65536.0f * 65536.0f)); |
63c5bb42eca5
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Mychaela Falconia <falcon@freecalypso.org>
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32 printf("Psi_st_inv = %u\n", (unsigned)(1.0f / Psi_st)); |
63c5bb42eca5
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Mychaela Falconia <falcon@freecalypso.org>
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33 exit(0); |
63c5bb42eca5
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Mychaela Falconia <falcon@freecalypso.org>
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34 } |