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annotate uptools/libcoding/gsmtime.c @ 416:30f6d1c32c6f

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doc/Flash-boot-defect article removed (no longer relevant) This article is no longer relevant because the issue in question only affected one (1) defective FCDEV3B board which was not and never will be sold.
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 26 Oct 2018 07:11:08 +0000
parents f40530e2d48d
children
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f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
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1 /*
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
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2 * This library module implements decoding of GSM timestamps.
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
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3 */
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
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4
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
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5 #include <sys/types.h>
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
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6 #include <stdio.h>
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
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7
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
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8 gsm_timestamp_decode(inbuf, outbuf)
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
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9 u_char *inbuf;
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10 char *outbuf;
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11 {
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12 u_char rev[7];
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13 int i, d1, d2, tzsign;
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14
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
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15 for (i = 0; i < 7; i++) {
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16 d1 = inbuf[i] & 0xF;
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17 d2 = inbuf[i] >> 4;
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18 rev[i] = (d1 << 4) | d2;
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19 }
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20 if (rev[6] & 0x80) {
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
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21 rev[6] &= 0x7F;
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22 tzsign = '-';
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23 } else
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24 tzsign = '+';
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25 sprintf(outbuf, "%02X/%02X/%02X,%02X:%02X:%02X%c%02X", rev[0], rev[1],
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26 rev[2], rev[3], rev[4], rev[5], tzsign, rev[6]);
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27 }