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7b5e6d29 BV |
1 | /* |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2014 Bert Vermeulen <bert@biot.com> | |
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 | #include "libsigrok.h" | |
21 | #include "libsigrok-internal.h" | |
22 | ||
23 | /* * @cond PRIVATE */ | |
24 | #define LOG_PREFIX "trigger" | |
25 | /* * @endcond */ | |
26 | ||
9fcc2866 UH |
27 | /** |
28 | * @file | |
29 | * | |
30 | * Creating, using, or destroying triggers. | |
31 | */ | |
32 | ||
33 | /** | |
34 | * @defgroup grp_trigger Trigger handling | |
35 | * | |
36 | * Creating, using, or destroying triggers. | |
37 | * | |
38 | * @{ | |
39 | */ | |
40 | ||
00ebcbf4 | 41 | SR_API struct sr_trigger *sr_trigger_new(const char *name) |
7b5e6d29 BV |
42 | { |
43 | struct sr_trigger *trig; | |
44 | ||
45 | trig = g_malloc0(sizeof(struct sr_trigger)); | |
46 | if (name) | |
47 | trig->name = g_strdup(name); | |
48 | ||
49 | return trig; | |
50 | } | |
51 | ||
52 | SR_API void sr_trigger_free(struct sr_trigger *trig) | |
53 | { | |
54 | struct sr_trigger_stage *stage; | |
55 | GSList *l; | |
56 | ||
57 | for (l = trig->stages; l; l = l->next) { | |
58 | stage = l->data; | |
59 | g_slist_free_full(stage->matches, g_free); | |
60 | } | |
2fe80494 | 61 | g_slist_free_full(trig->stages, g_free); |
7b5e6d29 BV |
62 | |
63 | g_free(trig->name); | |
64 | g_free(trig); | |
65 | } | |
66 | ||
a153d6b8 | 67 | SR_API struct sr_trigger_stage *sr_trigger_stage_add(struct sr_trigger *trig) |
7b5e6d29 BV |
68 | { |
69 | struct sr_trigger_stage *stage; | |
70 | ||
71 | stage = g_malloc0(sizeof(struct sr_trigger_stage)); | |
72 | stage->stage = g_slist_length(trig->stages); | |
73 | trig->stages = g_slist_append(trig->stages, stage); | |
74 | ||
75 | return stage; | |
76 | } | |
77 | ||
78 | SR_API int sr_trigger_match_add(struct sr_trigger_stage *stage, | |
79 | struct sr_channel *ch, int trigger_match, float value) | |
80 | { | |
81 | struct sr_trigger_match *match; | |
82 | ||
83 | if (ch->type == SR_CHANNEL_LOGIC) { | |
84 | if (trigger_match != SR_TRIGGER_ZERO && | |
85 | trigger_match != SR_TRIGGER_ONE && | |
86 | trigger_match != SR_TRIGGER_RISING && | |
87 | trigger_match != SR_TRIGGER_FALLING && | |
88 | trigger_match != SR_TRIGGER_EDGE) { | |
89 | sr_err("Invalid trigger match for a logic channel."); | |
90 | return SR_ERR_ARG; | |
91 | } | |
92 | ||
93 | ||
94 | } else if (ch->type == SR_CHANNEL_ANALOG) { | |
95 | if (trigger_match != SR_TRIGGER_FALLING && | |
96 | trigger_match != SR_TRIGGER_OVER && | |
97 | trigger_match != SR_TRIGGER_UNDER) { | |
98 | sr_err("Invalid trigger match for an analog channel."); | |
99 | return SR_ERR_ARG; | |
100 | } | |
101 | } | |
102 | ||
103 | match = g_malloc0(sizeof(struct sr_trigger_match)); | |
104 | match->channel = ch; | |
105 | match->match = trigger_match; | |
106 | match->value = value; | |
107 | stage->matches = g_slist_append(stage->matches, match); | |
108 | ||
109 | return SR_OK; | |
110 | } | |
9fcc2866 UH |
111 | |
112 | /** @} */ |