FreeCalypso > hg > freecalypso-tools
annotate miscutil/arfcn2ti.c @ 926:6a0aa8d36d06
rvinterf backslash escape: introduce libprint
The new helper function library named libprint is meant to replace
the badly misnamed libg23, and will soon contain functions for
printing all of the same kinds of GPF TST packets that are now handled
in libg23. However, we are also moving safe_print_trace() from libasync
to this new library, and changing it to emit our new backslash escape
format.
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Tue, 23 May 2023 03:47:46 +0000 |
parents | b8cb116a7dc7 |
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rev | line source |
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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 a standard ARFCN into TI L1 radio_freq. |
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11 */ |
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12 |
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13 #include <stdio.h> |
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14 #include <stdlib.h> |
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15 #include <string.h> |
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16 #include <strings.h> |
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17 |
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18 main(argc, argv) |
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19 char **argv; |
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20 { |
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21 int arfcn; |
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22 |
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23 if (argc != 3) { |
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24 usage: fprintf(stderr, "usage: %s {eu|us} arfcn\n", argv[0]); |
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25 exit(1); |
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26 } |
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27 arfcn = atoi(argv[2]); |
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28 if (!strcmp(argv[1], "eu")) |
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29 arfcn2ti_eu(arfcn); |
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30 else if (!strcmp(argv[1], "us")) |
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31 arfcn2ti_us(arfcn); |
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32 else |
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33 goto usage; |
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34 exit(0); |
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35 } |
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36 |
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37 arfcn2ti_eu(arfcn) |
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38 { |
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39 if (arfcn == 0) |
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40 arfcn = 174; |
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41 else if ((arfcn >= 975) && (arfcn <= 1023)) |
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42 arfcn -= 850; |
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43 else if ((arfcn >= 512) && (arfcn <= 885)) |
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44 arfcn -= 337; |
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45 else if ((arfcn >= 1) && (arfcn <= 124)) |
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46 ; |
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47 else { |
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48 fprintf(stderr, |
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49 "error: specified ARFCN is invalid for dual-EU\n"); |
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50 exit(1); |
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51 } |
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52 printf("%d\n", arfcn); |
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53 } |
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54 |
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55 arfcn2ti_us(arfcn) |
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56 { |
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57 if ((arfcn >= 128) && (arfcn <= 251)) |
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58 arfcn -= 127; |
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59 else if ((arfcn >= 512) && (arfcn <= 810)) |
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60 arfcn -= 387; |
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61 else { |
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62 fprintf(stderr, |
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63 "error: specified ARFCN is invalid for dual-US\n"); |
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64 exit(1); |
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65 } |
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66 printf("%d\n", arfcn); |
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67 } |