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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 GSList *brymen_scan(const char *conn, const char *serialcomm) | |
39 | { | |
40 | struct sr_dev_inst *sdi; | |
41 | struct dev_context *devc; | |
42 | struct drv_context *drvc; | |
43 | struct sr_serial_dev_inst *serial; | |
44 | GSList *devices; | |
45 | int ret; | |
46 | uint8_t buf[128]; | |
47 | size_t len; | |
48 | ||
49 | serial = sr_serial_dev_inst_new(conn, serialcomm); | |
50 | ||
51 | if (serial_open(serial, SERIAL_RDWR) != SR_OK) | |
52 | return NULL; | |
53 | ||
54 | sr_info("Probing port %s.", conn); | |
55 | ||
56 | devices = NULL; | |
57 | ||
58 | /* Request reading */ | |
59 | if ((ret = brymen_packet_request(serial)) < 0) { | |
60 | sr_err("Unable to send command: %d.", ret); | |
61 | goto scan_cleanup; | |
62 | } | |
63 | ||
64 | len = 128; | |
65 | ret = brymen_stream_detect(serial, buf, &len, brymen_packet_length, | |
66 | brymen_packet_is_valid, 1000, 9600); | |
67 | if (ret != SR_OK) | |
68 | goto scan_cleanup; | |
69 | ||
70 | sr_info("Found device on port %s.", conn); | |
71 | ||
72 | sdi = g_malloc0(sizeof(struct sr_dev_inst)); | |
73 | sdi->status = SR_ST_INACTIVE; | |
74 | sdi->vendor = g_strdup("Brymen"); | |
75 | sdi->model = g_strdup("BM85x"); | |
76 | devc = g_malloc0(sizeof(struct dev_context)); | |
77 | sr_sw_limits_init(&devc->sw_limits); | |
78 | sdi->inst_type = SR_INST_SERIAL; | |
79 | sdi->conn = serial; | |
80 | drvc = di->context; | |
81 | sdi->priv = devc; | |
82 | sdi->driver = di; | |
83 | sr_channel_new(sdi, 0, SR_CHANNEL_ANALOG, TRUE, "P1"); | |
84 | drvc->instances = g_slist_append(drvc->instances, sdi); | |
85 | devices = g_slist_append(devices, sdi); | |
86 | ||
87 | scan_cleanup: | |
88 | serial_close(serial); | |
89 | ||
90 | return devices; | |
91 | } | |
92 | ||
93 | static GSList *scan(struct sr_dev_driver *di, GSList *options) | |
94 | { | |
95 | struct drv_context *drvc; | |
96 | struct sr_config *src; | |
97 | GSList *devices, *l; | |
98 | const char *conn, *serialcomm; | |
99 | ||
100 | devices = NULL; | |
101 | drvc = di->context; | |
102 | drvc->instances = NULL; | |
103 | ||
104 | conn = serialcomm = NULL; | |
105 | for (l = options; l; l = l->next) { | |
106 | src = l->data; | |
107 | switch (src->key) { | |
108 | case SR_CONF_CONN: | |
109 | conn = g_variant_get_string(src->data, NULL); | |
110 | break; | |
111 | case SR_CONF_SERIALCOMM: | |
112 | serialcomm = g_variant_get_string(src->data, NULL); | |
113 | break; | |
114 | } | |
115 | } | |
116 | if (!conn) | |
117 | return NULL; | |
118 | ||
119 | if (serialcomm) { | |
120 | /* Use the provided comm specs. */ | |
121 | devices = brymen_scan(conn, serialcomm); | |
122 | } else { | |
123 | /* But 9600/8n1 should work all of the time. */ | |
124 | devices = brymen_scan(conn, "9600/8n1/dtr=1/rts=1"); | |
125 | } | |
126 | ||
127 | return devices; | |
128 | } | |
129 | ||
130 | static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi, | |
131 | const struct sr_channel_group *cg) | |
132 | { | |
133 | struct dev_context *devc; | |
134 | ||
135 | (void)cg; | |
136 | ||
137 | if (sdi->status != SR_ST_ACTIVE) | |
138 | return SR_ERR_DEV_CLOSED; | |
139 | ||
140 | if (!(devc = sdi->priv)) { | |
141 | sr_err("sdi->priv was NULL."); | |
142 | return SR_ERR_BUG; | |
143 | } | |
144 | ||
145 | return sr_sw_limits_config_set(&devc->sw_limits, key, data); | |
146 | } | |
147 | ||
148 | static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, | |
149 | const struct sr_channel_group *cg) | |
150 | { | |
151 | (void)sdi; | |
152 | (void)cg; | |
153 | ||
154 | switch (key) { | |
155 | case SR_CONF_SCAN_OPTIONS: | |
156 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
157 | scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t)); | |
158 | break; | |
159 | case SR_CONF_DEVICE_OPTIONS: | |
160 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
161 | devopts, ARRAY_SIZE(devopts), sizeof(uint32_t)); | |
162 | break; | |
163 | default: | |
164 | return SR_ERR_NA; | |
165 | } | |
166 | ||
167 | return SR_OK; | |
168 | } | |
169 | ||
170 | static int dev_acquisition_start(const struct sr_dev_inst *sdi) | |
171 | { | |
172 | struct dev_context *devc; | |
173 | struct sr_serial_dev_inst *serial; | |
174 | ||
175 | if (sdi->status != SR_ST_ACTIVE) | |
176 | return SR_ERR_DEV_CLOSED; | |
177 | ||
178 | devc = sdi->priv; | |
179 | ||
180 | sr_sw_limits_acquisition_start(&devc->sw_limits); | |
181 | std_session_send_df_header(sdi, LOG_PREFIX); | |
182 | ||
183 | /* Poll every 50ms, or whenever some data comes in. */ | |
184 | serial = sdi->conn; | |
185 | serial_source_add(sdi->session, serial, G_IO_IN, 50, | |
186 | brymen_dmm_receive_data, (void *)sdi); | |
187 | ||
188 | return SR_OK; | |
189 | } | |
190 | ||
191 | static int dev_acquisition_stop(struct sr_dev_inst *sdi) | |
192 | { | |
193 | return std_serial_dev_acquisition_stop(sdi, std_serial_dev_close, | |
194 | sdi->conn, LOG_PREFIX); | |
195 | } | |
196 | ||
197 | SR_PRIV struct sr_dev_driver brymen_bm857_driver_info = { | |
198 | .name = "brymen-bm857", | |
199 | .longname = "Brymen BM857", | |
200 | .api_version = 1, | |
201 | .init = std_init, | |
202 | .cleanup = std_cleanup, | |
203 | .scan = scan, | |
204 | .dev_list = std_dev_list, | |
205 | .dev_clear = NULL, | |
206 | .config_get = NULL, | |
207 | .config_set = config_set, | |
208 | .config_list = config_list, | |
209 | .dev_open = std_serial_dev_open, | |
210 | .dev_close = std_serial_dev_close, | |
211 | .dev_acquisition_start = dev_acquisition_start, | |
212 | .dev_acquisition_stop = dev_acquisition_stop, | |
213 | .context = NULL, | |
214 | }; |