projects / libsigrok.git / blame
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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 | ||
| 00ebcbf4 | 27 | SR_API struct sr_trigger *sr_trigger_new(const char *name) |
| 7b5e6d29 BV |
28 | { |
| 29 | struct sr_trigger *trig; | |
| 30 | ||
| 31 | trig = g_malloc0(sizeof(struct sr_trigger)); | |
| 32 | if (name) | |
| 33 | trig->name = g_strdup(name); | |
| 34 | ||
| 35 | return trig; | |
| 36 | } | |
| 37 | ||
| 38 | SR_API void sr_trigger_free(struct sr_trigger *trig) | |
| 39 | { | |
| 40 | struct sr_trigger_stage *stage; | |
| 41 | GSList *l; | |
| 42 | ||
| 43 | for (l = trig->stages; l; l = l->next) { | |
| 44 | stage = l->data; | |
| 45 | g_slist_free_full(stage->matches, g_free); | |
| 46 | } | |
| 2fe80494 | 47 | g_slist_free_full(trig->stages, g_free); |
| 7b5e6d29 BV |
48 | |
| 49 | g_free(trig->name); | |
| 50 | g_free(trig); | |
| 51 | } | |
| 52 | ||
| a153d6b8 | 53 | SR_API struct sr_trigger_stage *sr_trigger_stage_add(struct sr_trigger *trig) |
| 7b5e6d29 BV |
54 | { |
| 55 | struct sr_trigger_stage *stage; | |
| 56 | ||
| 57 | stage = g_malloc0(sizeof(struct sr_trigger_stage)); | |
| 58 | stage->stage = g_slist_length(trig->stages); | |
| 59 | trig->stages = g_slist_append(trig->stages, stage); | |
| 60 | ||
| 61 | return stage; | |
| 62 | } | |
| 63 | ||
| 64 | SR_API int sr_trigger_match_add(struct sr_trigger_stage *stage, | |
| 65 | struct sr_channel *ch, int trigger_match, float value) | |
| 66 | { | |
| 67 | struct sr_trigger_match *match; | |
| 68 | ||
| 69 | if (ch->type == SR_CHANNEL_LOGIC) { | |
| 70 | if (trigger_match != SR_TRIGGER_ZERO && | |
| 71 | trigger_match != SR_TRIGGER_ONE && | |
| 72 | trigger_match != SR_TRIGGER_RISING && | |
| 73 | trigger_match != SR_TRIGGER_FALLING && | |
| 74 | trigger_match != SR_TRIGGER_EDGE) { | |
| 75 | sr_err("Invalid trigger match for a logic channel."); | |
| 76 | return SR_ERR_ARG; | |
| 77 | } | |
| 78 | ||
| 79 | ||
| 80 | } else if (ch->type == SR_CHANNEL_ANALOG) { | |
| 81 | if (trigger_match != SR_TRIGGER_FALLING && | |
| 82 | trigger_match != SR_TRIGGER_OVER && | |
| 83 | trigger_match != SR_TRIGGER_UNDER) { | |
| 84 | sr_err("Invalid trigger match for an analog channel."); | |
| 85 | return SR_ERR_ARG; | |
| 86 | } | |
| 87 | } | |
| 88 | ||
| 89 | match = g_malloc0(sizeof(struct sr_trigger_match)); | |
| 90 | match->channel = ch; | |
| 91 | match->match = trigger_match; | |
| 92 | match->value = value; | |
| 93 | stage->matches = g_slist_append(stage->matches, match); | |
| 94 | ||
| 95 | return SR_OK; | |
| 96 | } |