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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 int32_t hwopts[] = { | |
23 | SR_CONF_CONN, | |
24 | SR_CONF_SERIALCOMM, | |
25 | }; | |
26 | ||
27 | static const int32_t hwcaps[] = { | |
28 | SR_CONF_MULTIMETER, | |
29 | SR_CONF_LIMIT_SAMPLES, | |
30 | SR_CONF_CONTINUOUS, | |
31 | SR_CONF_LIMIT_MSEC, | |
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 int dev_clear(void) | |
43 | { | |
44 | return std_dev_clear(di, NULL); | |
45 | } | |
46 | ||
47 | static GSList *brymen_scan(const char *conn, const char *serialcomm) | |
48 | { | |
49 | struct sr_dev_inst *sdi; | |
50 | struct dev_context *devc; | |
51 | struct drv_context *drvc; | |
52 | struct sr_probe *probe; | |
53 | struct sr_serial_dev_inst *serial; | |
54 | GSList *devices; | |
55 | int ret; | |
56 | uint8_t buf[128]; | |
57 | size_t len; | |
58 | ||
59 | if (!(serial = sr_serial_dev_inst_new(conn, serialcomm))) | |
60 | return NULL; | |
61 | ||
62 | if (serial_open(serial, SERIAL_RDWR | SERIAL_NONBLOCK) != SR_OK) | |
63 | return NULL; | |
64 | ||
65 | sr_info("Probing port %s.", conn); | |
66 | ||
67 | devices = NULL; | |
68 | ||
69 | /* Request reading */ | |
70 | if ((ret = brymen_packet_request(serial)) < 0) { | |
71 | sr_err("Unable to send command: %d.", ret); | |
72 | goto scan_cleanup; | |
73 | } | |
74 | ||
75 | len = 128; | |
76 | ret = brymen_stream_detect(serial, buf, &len, brymen_packet_length, | |
77 | brymen_packet_is_valid, 1000, 9600); | |
78 | if (ret != SR_OK) | |
79 | goto scan_cleanup; | |
80 | ||
81 | sr_info("Found device on port %s.", conn); | |
82 | ||
83 | if (!(sdi = sr_dev_inst_new(0, SR_ST_INACTIVE, "Brymen", "BM85x", ""))) | |
84 | goto scan_cleanup; | |
85 | ||
86 | if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) { | |
87 | sr_err("Device context malloc failed."); | |
88 | goto scan_cleanup; | |
89 | } | |
90 | ||
91 | sdi->inst_type = SR_INST_SERIAL; | |
92 | sdi->conn = serial; | |
93 | drvc = di->priv; | |
94 | sdi->priv = devc; | |
95 | sdi->driver = di; | |
96 | ||
97 | if (!(probe = sr_probe_new(0, SR_PROBE_ANALOG, TRUE, "P1"))) | |
98 | goto scan_cleanup; | |
99 | ||
100 | sdi->probes = g_slist_append(sdi->probes, probe); | |
101 | drvc->instances = g_slist_append(drvc->instances, sdi); | |
102 | devices = g_slist_append(devices, sdi); | |
103 | ||
104 | scan_cleanup: | |
105 | serial_close(serial); | |
106 | ||
107 | return devices; | |
108 | } | |
109 | ||
110 | static GSList *scan(GSList *options) | |
111 | { | |
112 | struct drv_context *drvc; | |
113 | struct sr_config *src; | |
114 | GSList *devices, *l; | |
115 | const char *conn, *serialcomm; | |
116 | ||
117 | devices = NULL; | |
118 | drvc = di->priv; | |
119 | drvc->instances = NULL; | |
120 | ||
121 | conn = serialcomm = NULL; | |
122 | for (l = options; l; l = l->next) { | |
123 | src = l->data; | |
124 | switch (src->key) { | |
125 | case SR_CONF_CONN: | |
126 | conn = g_variant_get_string(src->data, NULL); | |
127 | break; | |
128 | case SR_CONF_SERIALCOMM: | |
129 | serialcomm = g_variant_get_string(src->data, NULL); | |
130 | break; | |
131 | } | |
132 | } | |
133 | if (!conn) | |
134 | return NULL; | |
135 | ||
136 | if (serialcomm) { | |
137 | /* Use the provided comm specs. */ | |
138 | devices = brymen_scan(conn, serialcomm); | |
139 | } else { | |
140 | /* But 9600/8n1 should work all of the time. */ | |
141 | devices = brymen_scan(conn, "9600/8n1/dtr=1/rts=1"); | |
142 | } | |
143 | ||
144 | return devices; | |
145 | } | |
146 | ||
147 | static GSList *dev_list(void) | |
148 | { | |
149 | return ((struct drv_context *)(di->priv))->instances; | |
150 | } | |
151 | ||
152 | static int cleanup(void) | |
153 | { | |
154 | return dev_clear(); | |
155 | } | |
156 | ||
157 | static int config_set(int id, GVariant *data, const struct sr_dev_inst *sdi, | |
158 | const struct sr_probe_group *probe_group) | |
159 | { | |
160 | struct dev_context *devc; | |
161 | int ret; | |
162 | ||
163 | (void)probe_group; | |
164 | ||
165 | if (sdi->status != SR_ST_ACTIVE) | |
166 | return SR_ERR_DEV_CLOSED; | |
167 | ||
168 | if (!(devc = sdi->priv)) { | |
169 | sr_err("sdi->priv was NULL."); | |
170 | return SR_ERR_BUG; | |
171 | } | |
172 | ||
173 | ret = SR_OK; | |
174 | switch (id) { | |
175 | case SR_CONF_LIMIT_SAMPLES: | |
176 | devc->limit_samples = g_variant_get_uint64(data); | |
177 | break; | |
178 | case SR_CONF_LIMIT_MSEC: | |
179 | devc->limit_msec = g_variant_get_uint64(data); | |
180 | break; | |
181 | default: | |
182 | ret = SR_ERR_NA; | |
183 | } | |
184 | ||
185 | return ret; | |
186 | } | |
187 | ||
188 | static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi, | |
189 | const struct sr_probe_group *probe_group) | |
190 | { | |
191 | (void)sdi; | |
192 | (void)probe_group; | |
193 | ||
194 | switch (key) { | |
195 | case SR_CONF_SCAN_OPTIONS: | |
196 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, | |
197 | hwopts, ARRAY_SIZE(hwopts), sizeof(int32_t)); | |
198 | break; | |
199 | case SR_CONF_DEVICE_OPTIONS: | |
200 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, | |
201 | hwcaps, ARRAY_SIZE(hwcaps), sizeof(int32_t)); | |
202 | break; | |
203 | default: | |
204 | return SR_ERR_NA; | |
205 | } | |
206 | ||
207 | return SR_OK; | |
208 | } | |
209 | ||
210 | static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data) | |
211 | { | |
212 | struct dev_context *devc; | |
213 | struct sr_serial_dev_inst *serial; | |
214 | ||
215 | if (sdi->status != SR_ST_ACTIVE) | |
216 | return SR_ERR_DEV_CLOSED; | |
217 | ||
218 | if (!(devc = sdi->priv)) { | |
219 | sr_err("sdi->priv was NULL."); | |
220 | return SR_ERR_BUG; | |
221 | } | |
222 | ||
223 | devc->cb_data = cb_data; | |
224 | ||
225 | /* | |
226 | * Reset the number of samples to take. If we've already collected our | |
227 | * quota, but we start a new session, and don't reset this, we'll just | |
228 | * quit without acquiring any new samples. | |
229 | */ | |
230 | devc->num_samples = 0; | |
231 | devc->starttime = g_get_monotonic_time(); | |
232 | ||
233 | /* Send header packet to the session bus. */ | |
234 | std_session_send_df_header(cb_data, LOG_PREFIX); | |
235 | ||
236 | /* Poll every 50ms, or whenever some data comes in. */ | |
237 | serial = sdi->conn; | |
238 | serial_source_add(serial, G_IO_IN, 50, | |
239 | brymen_dmm_receive_data, (void *)sdi); | |
240 | ||
241 | return SR_OK; | |
242 | } | |
243 | ||
244 | static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) | |
245 | { | |
246 | return std_serial_dev_acquisition_stop(sdi, cb_data, std_serial_dev_close, | |
247 | sdi->conn, LOG_PREFIX); | |
248 | } | |
249 | ||
250 | SR_PRIV struct sr_dev_driver brymen_bm857_driver_info = { | |
251 | .name = "brymen-bm857", | |
252 | .longname = "Brymen BM857", | |
253 | .api_version = 1, | |
254 | .init = init, | |
255 | .cleanup = cleanup, | |
256 | .scan = scan, | |
257 | .dev_list = dev_list, | |
258 | .dev_clear = dev_clear, | |
259 | .config_get = NULL, | |
260 | .config_set = config_set, | |
261 | .config_list = config_list, | |
262 | .dev_open = std_serial_dev_open, | |
263 | .dev_close = std_serial_dev_close, | |
264 | .dev_acquisition_start = dev_acquisition_start, | |
265 | .dev_acquisition_stop = dev_acquisition_stop, | |
266 | .priv = NULL, | |
267 | }; |