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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 | static GSList *brymen_scan(struct sr_dev_driver *di, const char *conn, | |
36 | const char *serialcomm) | |
37 | { | |
38 | struct sr_dev_inst *sdi; | |
39 | struct dev_context *devc; | |
40 | struct sr_serial_dev_inst *serial; | |
41 | GSList *devices; | |
42 | int ret; | |
43 | uint8_t buf[128]; | |
44 | size_t len; | |
45 | ||
46 | serial = sr_serial_dev_inst_new(conn, serialcomm); | |
47 | ||
48 | if (serial_open(serial, SERIAL_RDWR) != SR_OK) | |
49 | return NULL; | |
50 | ||
51 | sr_info("Probing port %s.", conn); | |
52 | ||
53 | devices = NULL; | |
54 | ||
55 | /* Request reading */ | |
56 | if ((ret = brymen_packet_request(serial)) < 0) { | |
57 | sr_err("Unable to send command: %d.", ret); | |
58 | goto scan_cleanup; | |
59 | } | |
60 | ||
61 | len = 128; | |
62 | ret = brymen_stream_detect(serial, buf, &len, brymen_packet_length, | |
63 | brymen_packet_is_valid, 1000, 9600); | |
64 | if (ret != SR_OK) | |
65 | goto scan_cleanup; | |
66 | ||
67 | sr_info("Found device on port %s.", conn); | |
68 | ||
69 | sdi = g_malloc0(sizeof(struct sr_dev_inst)); | |
70 | sdi->status = SR_ST_INACTIVE; | |
71 | sdi->vendor = g_strdup("Brymen"); | |
72 | sdi->model = g_strdup("BM85x"); | |
73 | devc = g_malloc0(sizeof(struct dev_context)); | |
74 | sr_sw_limits_init(&devc->sw_limits); | |
75 | sdi->inst_type = SR_INST_SERIAL; | |
76 | sdi->conn = serial; | |
77 | sdi->priv = devc; | |
78 | sr_channel_new(sdi, 0, SR_CHANNEL_ANALOG, TRUE, "P1"); | |
79 | devices = g_slist_append(devices, sdi); | |
80 | ||
81 | scan_cleanup: | |
82 | serial_close(serial); | |
83 | ||
84 | return std_scan_complete(di, devices); | |
85 | } | |
86 | ||
87 | static GSList *scan(struct sr_dev_driver *di, GSList *options) | |
88 | { | |
89 | struct drv_context *drvc; | |
90 | struct sr_config *src; | |
91 | GSList *devices, *l; | |
92 | const char *conn, *serialcomm; | |
93 | ||
94 | devices = NULL; | |
95 | drvc = di->context; | |
96 | ||
97 | conn = serialcomm = NULL; | |
98 | for (l = options; l; l = l->next) { | |
99 | src = l->data; | |
100 | switch (src->key) { | |
101 | case SR_CONF_CONN: | |
102 | conn = g_variant_get_string(src->data, NULL); | |
103 | break; | |
104 | case SR_CONF_SERIALCOMM: | |
105 | serialcomm = g_variant_get_string(src->data, NULL); | |
106 | break; | |
107 | } | |
108 | } | |
109 | if (!conn) | |
110 | return NULL; | |
111 | ||
112 | if (serialcomm) { | |
113 | /* Use the provided comm specs. */ | |
114 | devices = brymen_scan(di, conn, serialcomm); | |
115 | } else { | |
116 | /* But 9600/8n1 should work all of the time. */ | |
117 | devices = brymen_scan(di, conn, "9600/8n1/dtr=1/rts=1"); | |
118 | } | |
119 | ||
120 | return devices; | |
121 | } | |
122 | ||
123 | static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi, | |
124 | const struct sr_channel_group *cg) | |
125 | { | |
126 | struct dev_context *devc; | |
127 | ||
128 | (void)cg; | |
129 | ||
130 | if (sdi->status != SR_ST_ACTIVE) | |
131 | return SR_ERR_DEV_CLOSED; | |
132 | ||
133 | devc = sdi->priv; | |
134 | ||
135 | return sr_sw_limits_config_set(&devc->sw_limits, key, data); | |
136 | } | |
137 | ||
138 | static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, | |
139 | const struct sr_channel_group *cg) | |
140 | { | |
141 | (void)sdi; | |
142 | (void)cg; | |
143 | ||
144 | switch (key) { | |
145 | case SR_CONF_SCAN_OPTIONS: | |
146 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
147 | scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t)); | |
148 | break; | |
149 | case SR_CONF_DEVICE_OPTIONS: | |
150 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
151 | devopts, ARRAY_SIZE(devopts), sizeof(uint32_t)); | |
152 | break; | |
153 | default: | |
154 | return SR_ERR_NA; | |
155 | } | |
156 | ||
157 | return SR_OK; | |
158 | } | |
159 | ||
160 | static int dev_acquisition_start(const struct sr_dev_inst *sdi) | |
161 | { | |
162 | struct dev_context *devc; | |
163 | struct sr_serial_dev_inst *serial; | |
164 | ||
165 | if (sdi->status != SR_ST_ACTIVE) | |
166 | return SR_ERR_DEV_CLOSED; | |
167 | ||
168 | devc = sdi->priv; | |
169 | ||
170 | sr_sw_limits_acquisition_start(&devc->sw_limits); | |
171 | std_session_send_df_header(sdi, LOG_PREFIX); | |
172 | ||
173 | /* Poll every 50ms, or whenever some data comes in. */ | |
174 | serial = sdi->conn; | |
175 | serial_source_add(sdi->session, serial, G_IO_IN, 50, | |
176 | brymen_dmm_receive_data, (void *)sdi); | |
177 | ||
178 | return SR_OK; | |
179 | } | |
180 | ||
181 | static int dev_acquisition_stop(struct sr_dev_inst *sdi) | |
182 | { | |
183 | return std_serial_dev_acquisition_stop(sdi, std_serial_dev_close, | |
184 | sdi->conn, LOG_PREFIX); | |
185 | } | |
186 | ||
187 | static struct sr_dev_driver brymen_bm857_driver_info = { | |
188 | .name = "brymen-bm857", | |
189 | .longname = "Brymen BM857", | |
190 | .api_version = 1, | |
191 | .init = std_init, | |
192 | .cleanup = std_cleanup, | |
193 | .scan = scan, | |
194 | .dev_list = std_dev_list, | |
195 | .dev_clear = NULL, | |
196 | .config_get = NULL, | |
197 | .config_set = config_set, | |
198 | .config_list = config_list, | |
199 | .dev_open = std_serial_dev_open, | |
200 | .dev_close = std_serial_dev_close, | |
201 | .dev_acquisition_start = dev_acquisition_start, | |
202 | .dev_acquisition_stop = dev_acquisition_stop, | |
203 | .context = NULL, | |
204 | }; | |
205 | SR_REGISTER_DEV_DRIVER(brymen_bm857_driver_info); |