FreeCalypso > hg > freecalypso-tools

annotate miscutil/ti2arfcn.c @ 921:74d284add54d

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fc-fsio: guard against bogus readdir results from the target If the FFS being operated on contains SE K2x0 extended filenames, readdir will return strings that are bad for printing. We need to guard against this possibility, and also against possible other bogosity that could be sent by other alien firmwares.
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 31 Dec 2022 22:55:23 +0000
parents d2fccd82a83e
children
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d2fccd82a83e ti2arfcn utility added to miscutil
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1 /*
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2 * TI's TCS211 L1 does not use standard ARFCNs internally, instead it uses
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3 * its own non-standard radio_freq numbers in their place. Other firmware
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4 * components and all external interfaces do use standard ARFCNs, thus
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5 * conversion functions are invoked at appropriate points in the firmware.
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6 * However, L1-internal radio_freq numbers are emitted in L1 debug traces,
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7 * thus anyone looking at these traces needs to be able to convert between
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8 * standard ARFCNs and L1-internal radio_freq.
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9 *
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10 * The present utility converts TI's radio_freq numbers as seen in L1 traces
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11 * into standard ARFCNs.
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12 */
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13
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14 #include <stdio.h>
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15 #include <stdlib.h>
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16 #include <string.h>
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17 #include <strings.h>
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18
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19 main(argc, argv)
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20 char **argv;
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21 {
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22 int ti_num;
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23
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24 if (argc != 3) {
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25 usage: fprintf(stderr, "usage: %s {eu|us} L1_radio_freq\n", argv[0]);
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26 exit(1);
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27 }
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28 ti_num = atoi(argv[2]);
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29 if (!strcmp(argv[1], "eu"))
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30 ti2arfcn_eu(ti_num);
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31 else if (!strcmp(argv[1], "us"))
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32 ti2arfcn_us(ti_num);
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33 else
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34 goto usage;
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35 exit(0);
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36 }
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37
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38 ti2arfcn_eu(radio_freq)
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39 {
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40 int arfcn;
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41
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42 if (radio_freq < 1 || radio_freq > 548) {
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43 fprintf(stderr,
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44 "error: specified radio_freq is out of range for dual-EU\n");
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45 exit(1);
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46 }
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47 if (radio_freq < 175) {
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48 if (radio_freq <= 124)
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49 arfcn = radio_freq;
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50 else if (radio_freq < 174)
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51 arfcn = radio_freq - 125 + 975;
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52 else
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53 arfcn = 0;
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54 } else
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55 arfcn = radio_freq - 175 + 512;
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56 printf("%d\n", arfcn);
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57 }
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58
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59 ti2arfcn_us(radio_freq)
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60 {
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61 int arfcn;
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62
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63 if (radio_freq < 1 || radio_freq > 423) {
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64 fprintf(stderr,
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65 "error: specified radio_freq is out of range for dual-US\n");
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66 exit(1);
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67 }
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68 if (radio_freq < 125)
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69 arfcn = radio_freq - 1 + 128;
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70 else
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71 arfcn = radio_freq - 125 + 512;
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72 printf("%d\n", arfcn);
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73 }