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config_set(): Don't check for sdi->priv != NULL.
[libsigrok.git] / src / hardware / colead-slm / api.c
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1/*
2 * This file is part of the libsigrok project.
3 *
4 * Copyright (C) 2012 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 <config.h>
21#include <glib.h>
22#include <sys/types.h>
23#include <sys/stat.h>
24#include <fcntl.h>
25#include <string.h>
26#include <libsigrok/libsigrok.h>
27#include "libsigrok-internal.h"
28#include "protocol.h"
29
30/* The Colead SL-5868P uses this. */
31#define SERIALCOMM "2400/8n1"
32
33static const uint32_t scanopts[] = {
34 SR_CONF_CONN,
35 SR_CONF_SERIALCOMM,
36};
37
38static const uint32_t devopts[] = {
39 SR_CONF_SOUNDLEVELMETER,
40 SR_CONF_CONTINUOUS,
41 SR_CONF_LIMIT_SAMPLES | SR_CONF_SET,
42 SR_CONF_LIMIT_MSEC | SR_CONF_SET,
43};
44
45SR_PRIV struct sr_dev_driver colead_slm_driver_info;
46
47static GSList *scan(struct sr_dev_driver *di, GSList *options)
48{
49 struct drv_context *drvc;
50 struct dev_context *devc;
51 struct sr_dev_inst *sdi;
52 struct sr_config *src;
53 GSList *devices, *l;
54 const char *conn, *serialcomm;
55
56 drvc = di->context;
57 drvc->instances = NULL;
58
59 devices = NULL;
60
61 conn = serialcomm = NULL;
62 for (l = options; l; l = l->next) {
63 src = l->data;
64 switch (src->key) {
65 case SR_CONF_CONN:
66 conn = g_variant_get_string(src->data, NULL);
67 break;
68 case SR_CONF_SERIALCOMM:
69 serialcomm = g_variant_get_string(src->data, NULL);
70 break;
71 }
72 }
73 if (!conn)
74 return NULL;
75 if (!serialcomm)
76 serialcomm = SERIALCOMM;
77
78 sdi = g_malloc0(sizeof(struct sr_dev_inst));
79 sdi->status = SR_ST_INACTIVE;
80 sdi->vendor = g_strdup("Colead");
81 sdi->model = g_strdup("SL-5868P");
82 devc = g_malloc0(sizeof(struct dev_context));
83 sr_sw_limits_init(&devc->limits);
84 sdi->conn = sr_serial_dev_inst_new(conn, serialcomm);
85 sdi->inst_type = SR_INST_SERIAL;
86 sdi->priv = devc;
87 sdi->driver = di;
88 sr_channel_new(sdi, 0, SR_CHANNEL_ANALOG, TRUE, "P1");
89 drvc->instances = g_slist_append(drvc->instances, sdi);
90 devices = g_slist_append(devices, sdi);
91
92 return devices;
93}
94
95static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi,
96 const struct sr_channel_group *cg)
97{
98 struct dev_context *devc;
99
100 (void)cg;
101
102 if (sdi->status != SR_ST_ACTIVE)
103 return SR_ERR_DEV_CLOSED;
104
105 devc = sdi->priv;
106
107 return sr_sw_limits_config_set(&devc->limits, key, data);
108}
109
110static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
111 const struct sr_channel_group *cg)
112{
113 (void)sdi;
114 (void)cg;
115
116 switch (key) {
117 case SR_CONF_SCAN_OPTIONS:
118 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
119 scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
120 break;
121 case SR_CONF_DEVICE_OPTIONS:
122 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
123 devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
124 break;
125 default:
126 return SR_ERR_NA;
127 }
128
129 return SR_OK;
130}
131
132static int dev_acquisition_start(const struct sr_dev_inst *sdi)
133{
134 struct dev_context *devc = sdi->priv;
135 struct sr_serial_dev_inst *serial;
136
137 if (sdi->status != SR_ST_ACTIVE)
138 return SR_ERR_DEV_CLOSED;
139
140 sr_sw_limits_acquisition_start(&devc->limits);
141 std_session_send_df_header(sdi, LOG_PREFIX);
142
143 /* Poll every 150ms, or whenever some data comes in. */
144 serial = sdi->conn;
145 serial_source_add(sdi->session, serial, G_IO_IN, 150,
146 colead_slm_receive_data, (void *)sdi);
147
148 return SR_OK;
149}
150
151static int dev_acquisition_stop(struct sr_dev_inst *sdi)
152{
153 return std_serial_dev_acquisition_stop(sdi, std_serial_dev_close,
154 sdi->conn, LOG_PREFIX);
155}
156
157SR_PRIV struct sr_dev_driver colead_slm_driver_info = {
158 .name = "colead-slm",
159 .longname = "Colead SLM",
160 .api_version = 1,
161 .init = std_init,
162 .cleanup = std_cleanup,
163 .scan = scan,
164 .dev_list = std_dev_list,
165 .dev_clear = NULL,
166 .config_get = NULL,
167 .config_set = config_set,
168 .config_list = config_list,
169 .dev_open = std_serial_dev_open,
170 .dev_close = std_serial_dev_close,
171 .dev_acquisition_start = dev_acquisition_start,
172 .dev_acquisition_stop = dev_acquisition_stop,
173 .context = NULL,
174};