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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 <config.h> | |
21 | #include "protocol.h" | |
22 | ||
23 | static const uint32_t scanopts[] = { | |
24 | SR_CONF_CONN, | |
25 | SR_CONF_SERIALCOMM, | |
26 | }; | |
27 | ||
28 | static const uint32_t devopts[] = { | |
29 | SR_CONF_MULTIMETER, | |
30 | SR_CONF_CONTINUOUS, | |
31 | SR_CONF_LIMIT_SAMPLES | SR_CONF_SET, | |
32 | SR_CONF_LIMIT_MSEC | SR_CONF_SET, | |
33 | }; | |
34 | ||
35 | SR_PRIV struct sr_dev_driver brymen_bm857_driver_info; | |
36 | static struct sr_dev_driver *di = &brymen_bm857_driver_info; | |
37 | ||
38 | static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx) | |
39 | { | |
40 | return std_init(sr_ctx, di, LOG_PREFIX); | |
41 | } | |
42 | ||
43 | static GSList *brymen_scan(const char *conn, const char *serialcomm) | |
44 | { | |
45 | struct sr_dev_inst *sdi; | |
46 | struct dev_context *devc; | |
47 | struct drv_context *drvc; | |
48 | struct sr_serial_dev_inst *serial; | |
49 | GSList *devices; | |
50 | int ret; | |
51 | uint8_t buf[128]; | |
52 | size_t len; | |
53 | ||
54 | serial = sr_serial_dev_inst_new(conn, serialcomm); | |
55 | ||
56 | if (serial_open(serial, SERIAL_RDWR) != SR_OK) | |
57 | return NULL; | |
58 | ||
59 | sr_info("Probing port %s.", conn); | |
60 | ||
61 | devices = NULL; | |
62 | ||
63 | /* Request reading */ | |
64 | if ((ret = brymen_packet_request(serial)) < 0) { | |
65 | sr_err("Unable to send command: %d.", ret); | |
66 | goto scan_cleanup; | |
67 | } | |
68 | ||
69 | len = 128; | |
70 | ret = brymen_stream_detect(serial, buf, &len, brymen_packet_length, | |
71 | brymen_packet_is_valid, 1000, 9600); | |
72 | if (ret != SR_OK) | |
73 | goto scan_cleanup; | |
74 | ||
75 | sr_info("Found device on port %s.", conn); | |
76 | ||
77 | sdi = g_malloc0(sizeof(struct sr_dev_inst)); | |
78 | sdi->status = SR_ST_INACTIVE; | |
79 | sdi->vendor = g_strdup("Brymen"); | |
80 | sdi->model = g_strdup("BM85x"); | |
81 | devc = g_malloc0(sizeof(struct dev_context)); | |
82 | sdi->inst_type = SR_INST_SERIAL; | |
83 | sdi->conn = serial; | |
84 | drvc = di->context; | |
85 | sdi->priv = devc; | |
86 | sdi->driver = di; | |
87 | sr_channel_new(sdi, 0, SR_CHANNEL_ANALOG, TRUE, "P1"); | |
88 | drvc->instances = g_slist_append(drvc->instances, sdi); | |
89 | devices = g_slist_append(devices, sdi); | |
90 | ||
91 | scan_cleanup: | |
92 | serial_close(serial); | |
93 | ||
94 | return devices; | |
95 | } | |
96 | ||
97 | static GSList *scan(struct sr_dev_driver *di, GSList *options) | |
98 | { | |
99 | struct drv_context *drvc; | |
100 | struct sr_config *src; | |
101 | GSList *devices, *l; | |
102 | const char *conn, *serialcomm; | |
103 | ||
104 | devices = NULL; | |
105 | drvc = di->context; | |
106 | drvc->instances = NULL; | |
107 | ||
108 | conn = serialcomm = NULL; | |
109 | for (l = options; l; l = l->next) { | |
110 | src = l->data; | |
111 | switch (src->key) { | |
112 | case SR_CONF_CONN: | |
113 | conn = g_variant_get_string(src->data, NULL); | |
114 | break; | |
115 | case SR_CONF_SERIALCOMM: | |
116 | serialcomm = g_variant_get_string(src->data, NULL); | |
117 | break; | |
118 | } | |
119 | } | |
120 | if (!conn) | |
121 | return NULL; | |
122 | ||
123 | if (serialcomm) { | |
124 | /* Use the provided comm specs. */ | |
125 | devices = brymen_scan(conn, serialcomm); | |
126 | } else { | |
127 | /* But 9600/8n1 should work all of the time. */ | |
128 | devices = brymen_scan(conn, "9600/8n1/dtr=1/rts=1"); | |
129 | } | |
130 | ||
131 | return devices; | |
132 | } | |
133 | ||
134 | static GSList *dev_list(const struct sr_dev_driver *di) | |
135 | { | |
136 | return ((struct drv_context *)(di->context))->instances; | |
137 | } | |
138 | ||
139 | static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi, | |
140 | const struct sr_channel_group *cg) | |
141 | { | |
142 | struct dev_context *devc; | |
143 | int ret; | |
144 | ||
145 | (void)cg; | |
146 | ||
147 | if (sdi->status != SR_ST_ACTIVE) | |
148 | return SR_ERR_DEV_CLOSED; | |
149 | ||
150 | if (!(devc = sdi->priv)) { | |
151 | sr_err("sdi->priv was NULL."); | |
152 | return SR_ERR_BUG; | |
153 | } | |
154 | ||
155 | ret = SR_OK; | |
156 | switch (key) { | |
157 | case SR_CONF_LIMIT_SAMPLES: | |
158 | devc->limit_samples = g_variant_get_uint64(data); | |
159 | break; | |
160 | case SR_CONF_LIMIT_MSEC: | |
161 | devc->limit_msec = g_variant_get_uint64(data); | |
162 | break; | |
163 | default: | |
164 | ret = SR_ERR_NA; | |
165 | } | |
166 | ||
167 | return ret; | |
168 | } | |
169 | ||
170 | static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, | |
171 | const struct sr_channel_group *cg) | |
172 | { | |
173 | (void)sdi; | |
174 | (void)cg; | |
175 | ||
176 | switch (key) { | |
177 | case SR_CONF_SCAN_OPTIONS: | |
178 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
179 | scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t)); | |
180 | break; | |
181 | case SR_CONF_DEVICE_OPTIONS: | |
182 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
183 | devopts, ARRAY_SIZE(devopts), sizeof(uint32_t)); | |
184 | break; | |
185 | default: | |
186 | return SR_ERR_NA; | |
187 | } | |
188 | ||
189 | return SR_OK; | |
190 | } | |
191 | ||
192 | static int dev_acquisition_start(const struct sr_dev_inst *sdi) | |
193 | { | |
194 | struct dev_context *devc; | |
195 | struct sr_serial_dev_inst *serial; | |
196 | ||
197 | if (sdi->status != SR_ST_ACTIVE) | |
198 | return SR_ERR_DEV_CLOSED; | |
199 | ||
200 | devc = sdi->priv; | |
201 | ||
202 | /* | |
203 | * Reset the number of samples to take. If we've already collected our | |
204 | * quota, but we start a new session, and don't reset this, we'll just | |
205 | * quit without acquiring any new samples. | |
206 | */ | |
207 | devc->num_samples = 0; | |
208 | devc->starttime = g_get_monotonic_time(); | |
209 | ||
210 | std_session_send_df_header(sdi, LOG_PREFIX); | |
211 | ||
212 | /* Poll every 50ms, or whenever some data comes in. */ | |
213 | serial = sdi->conn; | |
214 | serial_source_add(sdi->session, serial, G_IO_IN, 50, | |
215 | brymen_dmm_receive_data, (void *)sdi); | |
216 | ||
217 | return SR_OK; | |
218 | } | |
219 | ||
220 | static int dev_acquisition_stop(struct sr_dev_inst *sdi) | |
221 | { | |
222 | return std_serial_dev_acquisition_stop(sdi, std_serial_dev_close, | |
223 | sdi->conn, LOG_PREFIX); | |
224 | } | |
225 | ||
226 | SR_PRIV struct sr_dev_driver brymen_bm857_driver_info = { | |
227 | .name = "brymen-bm857", | |
228 | .longname = "Brymen BM857", | |
229 | .api_version = 1, | |
230 | .init = init, | |
231 | .cleanup = std_cleanup, | |
232 | .scan = scan, | |
233 | .dev_list = dev_list, | |
234 | .dev_clear = NULL, | |
235 | .config_get = NULL, | |
236 | .config_set = config_set, | |
237 | .config_list = config_list, | |
238 | .dev_open = std_serial_dev_open, | |
239 | .dev_close = std_serial_dev_close, | |
240 | .dev_acquisition_start = dev_acquisition_start, | |
241 | .dev_acquisition_stop = dev_acquisition_stop, | |
242 | .context = NULL, | |
243 | }; |