]>
Commit | Line | Data |
---|---|---|
1 | /* | |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2012 Alexandru Gagniuc <mr.nuke.me@gmail.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 "protocol.h" | |
21 | ||
22 | static const uint32_t scanopts[] = { | |
23 | SR_CONF_CONN, | |
24 | SR_CONF_SERIALCOMM, | |
25 | }; | |
26 | ||
27 | static const uint32_t devopts[] = { | |
28 | SR_CONF_MULTIMETER, | |
29 | SR_CONF_CONTINUOUS, | |
30 | SR_CONF_LIMIT_SAMPLES | SR_CONF_SET, | |
31 | SR_CONF_LIMIT_MSEC | SR_CONF_SET, | |
32 | }; | |
33 | ||
34 | SR_PRIV struct sr_dev_driver brymen_bm857_driver_info; | |
35 | static struct sr_dev_driver *di = &brymen_bm857_driver_info; | |
36 | ||
37 | static int init(struct sr_context *sr_ctx) | |
38 | { | |
39 | return std_init(sr_ctx, di, LOG_PREFIX); | |
40 | } | |
41 | ||
42 | static GSList *brymen_scan(const char *conn, const char *serialcomm) | |
43 | { | |
44 | struct sr_dev_inst *sdi; | |
45 | struct dev_context *devc; | |
46 | struct drv_context *drvc; | |
47 | struct sr_channel *ch; | |
48 | struct sr_serial_dev_inst *serial; | |
49 | GSList *devices; | |
50 | int ret; | |
51 | uint8_t buf[128]; | |
52 | size_t len; | |
53 | ||
54 | if (!(serial = sr_serial_dev_inst_new(conn, serialcomm))) | |
55 | return NULL; | |
56 | ||
57 | if (serial_open(serial, SERIAL_RDWR) != SR_OK) | |
58 | return NULL; | |
59 | ||
60 | sr_info("Probing port %s.", conn); | |
61 | ||
62 | devices = NULL; | |
63 | ||
64 | /* Request reading */ | |
65 | if ((ret = brymen_packet_request(serial)) < 0) { | |
66 | sr_err("Unable to send command: %d.", ret); | |
67 | goto scan_cleanup; | |
68 | } | |
69 | ||
70 | len = 128; | |
71 | ret = brymen_stream_detect(serial, buf, &len, brymen_packet_length, | |
72 | brymen_packet_is_valid, 1000, 9600); | |
73 | if (ret != SR_OK) | |
74 | goto scan_cleanup; | |
75 | ||
76 | sr_info("Found device on port %s.", conn); | |
77 | ||
78 | if (!(sdi = sr_dev_inst_new(SR_ST_INACTIVE, "Brymen", "BM85x", NULL))) | |
79 | goto scan_cleanup; | |
80 | ||
81 | if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) { | |
82 | sr_err("Device context malloc failed."); | |
83 | goto scan_cleanup; | |
84 | } | |
85 | ||
86 | sdi->inst_type = SR_INST_SERIAL; | |
87 | sdi->conn = serial; | |
88 | drvc = di->priv; | |
89 | sdi->priv = devc; | |
90 | sdi->driver = di; | |
91 | ||
92 | if (!(ch = sr_channel_new(0, SR_CHANNEL_ANALOG, TRUE, "P1"))) | |
93 | goto scan_cleanup; | |
94 | ||
95 | sdi->channels = g_slist_append(sdi->channels, ch); | |
96 | drvc->instances = g_slist_append(drvc->instances, sdi); | |
97 | devices = g_slist_append(devices, sdi); | |
98 | ||
99 | scan_cleanup: | |
100 | serial_close(serial); | |
101 | ||
102 | return devices; | |
103 | } | |
104 | ||
105 | static GSList *scan(GSList *options) | |
106 | { | |
107 | struct drv_context *drvc; | |
108 | struct sr_config *src; | |
109 | GSList *devices, *l; | |
110 | const char *conn, *serialcomm; | |
111 | ||
112 | devices = NULL; | |
113 | drvc = di->priv; | |
114 | drvc->instances = NULL; | |
115 | ||
116 | conn = serialcomm = NULL; | |
117 | for (l = options; l; l = l->next) { | |
118 | src = l->data; | |
119 | switch (src->key) { | |
120 | case SR_CONF_CONN: | |
121 | conn = g_variant_get_string(src->data, NULL); | |
122 | break; | |
123 | case SR_CONF_SERIALCOMM: | |
124 | serialcomm = g_variant_get_string(src->data, NULL); | |
125 | break; | |
126 | } | |
127 | } | |
128 | if (!conn) | |
129 | return NULL; | |
130 | ||
131 | if (serialcomm) { | |
132 | /* Use the provided comm specs. */ | |
133 | devices = brymen_scan(conn, serialcomm); | |
134 | } else { | |
135 | /* But 9600/8n1 should work all of the time. */ | |
136 | devices = brymen_scan(conn, "9600/8n1/dtr=1/rts=1"); | |
137 | } | |
138 | ||
139 | return devices; | |
140 | } | |
141 | ||
142 | static GSList *dev_list(void) | |
143 | { | |
144 | return ((struct drv_context *)(di->priv))->instances; | |
145 | } | |
146 | ||
147 | static int cleanup(void) | |
148 | { | |
149 | return std_dev_clear(di, NULL); | |
150 | } | |
151 | ||
152 | static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi, | |
153 | const struct sr_channel_group *cg) | |
154 | { | |
155 | struct dev_context *devc; | |
156 | int ret; | |
157 | ||
158 | (void)cg; | |
159 | ||
160 | if (sdi->status != SR_ST_ACTIVE) | |
161 | return SR_ERR_DEV_CLOSED; | |
162 | ||
163 | if (!(devc = sdi->priv)) { | |
164 | sr_err("sdi->priv was NULL."); | |
165 | return SR_ERR_BUG; | |
166 | } | |
167 | ||
168 | ret = SR_OK; | |
169 | switch (key) { | |
170 | case SR_CONF_LIMIT_SAMPLES: | |
171 | devc->limit_samples = g_variant_get_uint64(data); | |
172 | break; | |
173 | case SR_CONF_LIMIT_MSEC: | |
174 | devc->limit_msec = g_variant_get_uint64(data); | |
175 | break; | |
176 | default: | |
177 | ret = SR_ERR_NA; | |
178 | } | |
179 | ||
180 | return ret; | |
181 | } | |
182 | ||
183 | static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, | |
184 | const struct sr_channel_group *cg) | |
185 | { | |
186 | (void)sdi; | |
187 | (void)cg; | |
188 | ||
189 | switch (key) { | |
190 | case SR_CONF_SCAN_OPTIONS: | |
191 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
192 | scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t)); | |
193 | break; | |
194 | case SR_CONF_DEVICE_OPTIONS: | |
195 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
196 | devopts, ARRAY_SIZE(devopts), sizeof(uint32_t)); | |
197 | break; | |
198 | default: | |
199 | return SR_ERR_NA; | |
200 | } | |
201 | ||
202 | return SR_OK; | |
203 | } | |
204 | ||
205 | static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data) | |
206 | { | |
207 | struct dev_context *devc; | |
208 | struct sr_serial_dev_inst *serial; | |
209 | ||
210 | if (sdi->status != SR_ST_ACTIVE) | |
211 | return SR_ERR_DEV_CLOSED; | |
212 | ||
213 | if (!(devc = sdi->priv)) { | |
214 | sr_err("sdi->priv was NULL."); | |
215 | return SR_ERR_BUG; | |
216 | } | |
217 | ||
218 | devc->cb_data = cb_data; | |
219 | ||
220 | /* | |
221 | * Reset the number of samples to take. If we've already collected our | |
222 | * quota, but we start a new session, and don't reset this, we'll just | |
223 | * quit without acquiring any new samples. | |
224 | */ | |
225 | devc->num_samples = 0; | |
226 | devc->starttime = g_get_monotonic_time(); | |
227 | ||
228 | /* Send header packet to the session bus. */ | |
229 | std_session_send_df_header(cb_data, LOG_PREFIX); | |
230 | ||
231 | /* Poll every 50ms, or whenever some data comes in. */ | |
232 | serial = sdi->conn; | |
233 | serial_source_add(sdi->session, serial, G_IO_IN, 50, | |
234 | brymen_dmm_receive_data, (void *)sdi); | |
235 | ||
236 | return SR_OK; | |
237 | } | |
238 | ||
239 | static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) | |
240 | { | |
241 | return std_serial_dev_acquisition_stop(sdi, cb_data, std_serial_dev_close, | |
242 | sdi->conn, LOG_PREFIX); | |
243 | } | |
244 | ||
245 | SR_PRIV struct sr_dev_driver brymen_bm857_driver_info = { | |
246 | .name = "brymen-bm857", | |
247 | .longname = "Brymen BM857", | |
248 | .api_version = 1, | |
249 | .init = init, | |
250 | .cleanup = cleanup, | |
251 | .scan = scan, | |
252 | .dev_list = dev_list, | |
253 | .dev_clear = NULL, | |
254 | .config_get = NULL, | |
255 | .config_set = config_set, | |
256 | .config_list = config_list, | |
257 | .dev_open = std_serial_dev_open, | |
258 | .dev_close = std_serial_dev_close, | |
259 | .dev_acquisition_start = dev_acquisition_start, | |
260 | .dev_acquisition_stop = dev_acquisition_stop, | |
261 | .priv = NULL, | |
262 | }; |