FreeCalypso > hg > freecalypso-tools

annotate uptools/libcoding/gsmtime.c @ 995:74024eb17e04

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
fc-loadtool help: improve language regarding 16 MiB flash chips In FC project history, 16 MiB flash originally meant Pirelli DP-L10. Then we got FCDEV3B with the same flash (our own design), but now we are discovering more Calypso devices that used such large flash, both late Calypso era (Sony Ericsson K2x0) as well as much earlier ones (FIC FLUID devices.txt file with 2004 dates, Leonardo+ rev 5). Hence we need to migrate to more generic or neutral language in associated documentation, without giving elevated status to specific examples that drove our early project history.
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 03 Dec 2023 21:11:12 +0000
parents f40530e2d48d
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
334
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1 /*
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2 * This library module implements decoding of GSM timestamps.
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
3 */
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
4
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
5 #include <sys/types.h>
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
6 #include <stdio.h>
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
7
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
8 gsm_timestamp_decode(inbuf, outbuf)
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
9 u_char *inbuf;
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
10 char *outbuf;
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
11 {
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
12 u_char rev[7];
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
13 int i, d1, d2, tzsign;
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
14
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
15 for (i = 0; i < 7; i++) {
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
16 d1 = inbuf[i] & 0xF;
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
17 d2 = inbuf[i] >> 4;
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
18 rev[i] = (d1 << 4) | d2;
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
19 }
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
20 if (rev[6] & 0x80) {
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
21 rev[6] &= 0x7F;
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
22 tzsign = '-';
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
23 } else
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
24 tzsign = '+';
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
25 sprintf(outbuf, "%02X/%02X/%02X,%02X:%02X:%02X%c%02X", rev[0], rev[1],
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
26 rev[2], rev[3], rev[4], rev[5], tzsign, rev[6]);
f40530e2d48d uptools/libcoding: GSM timestamp decoding implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
27 }