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823b4e58 MH |
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 | ||
0294a409 UH |
20 | /** |
21 | * @file | |
22 | * <em>Conrad DIGI 35 CPU</em> power supply driver | |
23 | * @internal | |
c6a2843a MH |
24 | */ |
25 | ||
823b4e58 MH |
26 | #include "protocol.h" |
27 | ||
0294a409 UH |
28 | /** |
29 | * Send command with parameter. | |
c6a2843a | 30 | * |
0294a409 UH |
31 | * @param[in] cmd Command |
32 | * @param[in] param Parameter (0..999, depending on command). | |
c6a2843a | 33 | * |
0294a409 UH |
34 | * @retval SR_OK Success. |
35 | * @retval SR_ERR_ARG Invalid argument. | |
36 | * @retval SR_ERR Error. | |
c6a2843a MH |
37 | */ |
38 | SR_PRIV int send_msg1(const struct sr_dev_inst *sdi, char cmd, int param) | |
823b4e58 | 39 | { |
c6a2843a MH |
40 | struct sr_serial_dev_inst *serial; |
41 | char buf[5]; | |
823b4e58 | 42 | |
c6a2843a MH |
43 | if (!sdi || !(serial = sdi->conn)) |
44 | return SR_ERR_ARG; | |
823b4e58 | 45 | |
c6a2843a MH |
46 | snprintf(buf, sizeof(buf), "%c%03d", cmd, param); |
47 | buf[4] = '\r'; | |
823b4e58 | 48 | |
c6a2843a | 49 | sr_spew("send_msg1(): %c%c%c%c\\r", buf[0], buf[1], buf[2], buf[3]); |
823b4e58 | 50 | |
c6a2843a MH |
51 | if (serial_write(serial, buf, sizeof(buf)) == -1) { |
52 | sr_err("Write error for cmd=%c: %d %s", cmd, errno, strerror(errno)); | |
53 | return SR_ERR; | |
823b4e58 | 54 | } |
0294a409 UH |
55 | |
56 | /* | |
57 | * Wait 50ms to ensure that the device does not swallow any of the | |
58 | * following commands. | |
59 | */ | |
60 | g_usleep(50000); | |
823b4e58 | 61 | |
c6a2843a | 62 | return SR_OK; |
823b4e58 | 63 | } |