FreeCalypso > hg > freecalypso-tools

annotate librftab/readfir.c @ 1012:11391cb6bdc0

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patch from fixeria: doc change from SE K2x0 to K2xx Since their discovery in late 2022, Sony Ericsson K200 and K220 phones were collectively referred to as SE K2x0 in FreeCalypso documentation. However, now that SE K205 has been discovered as yet another member of the same family (same PCBA in different case), it makes more sense to refer to the whole family as SE K2xx.
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 23 Sep 2024 12:23:20 +0000
parents 9178594bc283
children
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9178594bc283 librftab: implemented reading of FIR coefficient tables
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1 /*
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2 * Reading FIR coefficient tables from formatted ASCII files, used for the
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3 * auw-fir command in fc-tmsh.
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4 */
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5
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6 #include <sys/types.h>
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7 #include <ctype.h>
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8 #include <stdio.h>
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9 #include <string.h>
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10 #include <strings.h>
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11 #include <stdlib.h>
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12 #include "../rvinterf/include/exitcodes.h"
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13
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14 #include "rdcommon.c"
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15
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16 static u_char *writeptr;
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17
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18 static
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19 process_number()
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20 {
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21 char *field;
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22 int rc;
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23 long number;
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24
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25 rc = get_field(&field);
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26 if (rc < 0)
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27 return(ERROR_USAGE);
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28 if (!rc) {
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29 printf("error: %s is too short for a FIR coefficient table\n",
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30 filename);
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31 return(ERROR_USAGE);
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32 }
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33 number = strtol(field, 0, 0);
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34 *writeptr++ = number;
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35 *writeptr++ = number >> 8;
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36 return(0);
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37 }
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38
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39 read_fir_coeff_table(filename_arg, rdbuf)
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40 char *filename_arg;
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41 u_char *rdbuf;
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42 {
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43 char *field;
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44 int rc, i;
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45
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46 filename = filename_arg;
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47 rdfile = fopen(filename, "r");
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48 if (!rdfile) {
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49 perror(filename);
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50 return(ERROR_UNIX);
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51 }
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52 lineno = 0;
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53 line_nfields = 0;
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54 rc = get_field(&field);
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55 if (rc <= 0) {
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56 not_valid_fir_table:
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57 printf("error: %s is not a valid FIR coefficient table file\n",
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58 filename);
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59 fclose(rdfile);
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60 return(ERROR_USAGE);
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61 }
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62 if (strcmp(field, "fir-coeff-table"))
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63 goto not_valid_fir_table;
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64 writeptr = rdbuf;
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65 for (i = 0; i < 31; i++) {
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66 rc = process_number();
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67 if (rc) {
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68 fclose(rdfile);
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69 return(rc);
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70 }
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71 }
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72 rc = get_field(&field);
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73 fclose(rdfile);
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74 if (rc < 0)
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75 return(ERROR_USAGE);
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76 if (rc) {
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77 printf("error: %s is too long for a FIR coefficient table\n",
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78 filename);
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79 return(ERROR_USAGE);
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80 }
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81 return(0);
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82 }