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1 | /* | |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2014 Matthias Heidbrink <m-sigrok@heidbrink.biz> | |
5 | * | |
6 | * This program is free software: you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation, either version 3 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
18 | */ | |
19 | ||
20 | /** | |
21 | * @file | |
22 | * <em>Conrad DIGI 35 CPU</em> power supply driver | |
23 | * @internal | |
24 | */ | |
25 | ||
26 | #include <config.h> | |
27 | #include "protocol.h" | |
28 | ||
29 | /** | |
30 | * Send command with parameter. | |
31 | * | |
32 | * @param[in] cmd Command | |
33 | * @param[in] param Parameter (0..999, depending on command). | |
34 | * | |
35 | * @retval SR_OK Success. | |
36 | * @retval SR_ERR_ARG Invalid argument. | |
37 | * @retval SR_ERR Error. | |
38 | */ | |
39 | SR_PRIV int send_msg1(const struct sr_dev_inst *sdi, char cmd, int param) | |
40 | { | |
41 | struct sr_serial_dev_inst *serial; | |
42 | char buf[5]; | |
43 | ||
44 | if (!sdi || !(serial = sdi->conn)) | |
45 | return SR_ERR_ARG; | |
46 | ||
47 | snprintf(buf, sizeof(buf), "%c%03d", cmd, param); | |
48 | buf[4] = '\r'; | |
49 | ||
50 | sr_spew("send_msg1(): %c%c%c%c\\r", buf[0], buf[1], buf[2], buf[3]); | |
51 | ||
52 | if (serial_write_blocking(serial, buf, sizeof(buf), | |
53 | serial_timeout(serial, sizeof(buf))) < (int)sizeof(buf)) { | |
54 | sr_err("Write error for cmd=%c", cmd); | |
55 | return SR_ERR; | |
56 | } | |
57 | ||
58 | /* | |
59 | * Wait 50ms to ensure that the device does not swallow any of the | |
60 | * following commands. | |
61 | */ | |
62 | g_usleep(50 * 1000); | |
63 | ||
64 | return SR_OK; | |
65 | } |