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1 | /* | |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2018 Sven Bursch-Osewold <sb_git@bursch.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 drvopts[] = { | |
29 | SR_CONF_ELECTRONIC_LOAD, | |
30 | }; | |
31 | ||
32 | static const uint32_t devopts[] = { | |
33 | SR_CONF_CONTINUOUS, | |
34 | SR_CONF_CURRENT_LIMIT | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
35 | SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET, | |
36 | }; | |
37 | ||
38 | static GSList *scan(struct sr_dev_driver *di, GSList *options) | |
39 | { | |
40 | struct dev_context *devc; | |
41 | GSList *l; | |
42 | struct sr_dev_inst *sdi; | |
43 | const char *conn, *serialcomm; | |
44 | struct sr_config *src; | |
45 | struct sr_serial_dev_inst *serial; | |
46 | uint8_t reply[MSG_LEN]; | |
47 | ||
48 | conn = NULL; | |
49 | serialcomm = NULL; | |
50 | ||
51 | for (l = options; l; l = l->next) { | |
52 | src = l->data; | |
53 | switch (src->key) { | |
54 | case SR_CONF_CONN: | |
55 | conn = g_variant_get_string(src->data, NULL); | |
56 | break; | |
57 | case SR_CONF_SERIALCOMM: | |
58 | serialcomm = g_variant_get_string(src->data, NULL); | |
59 | break; | |
60 | } | |
61 | } | |
62 | ||
63 | if (!conn) | |
64 | return NULL; | |
65 | if (!serialcomm) | |
66 | serialcomm = "9600/8e1"; | |
67 | ||
68 | serial = sr_serial_dev_inst_new(conn, serialcomm); | |
69 | if (serial_open(serial, SERIAL_RDWR) != SR_OK) | |
70 | return NULL; | |
71 | ||
72 | sdi = g_malloc0(sizeof(struct sr_dev_inst)); | |
73 | sdi->status = SR_ST_INACTIVE; | |
74 | sdi->vendor = g_strdup("ZKETECH"); | |
75 | sdi->model = g_strdup("EBD-USB"); | |
76 | sdi->inst_type = SR_INST_SERIAL; | |
77 | sdi->conn = serial; | |
78 | ||
79 | sr_channel_new(sdi, 0, SR_CHANNEL_ANALOG, TRUE, "V"); | |
80 | sr_channel_new(sdi, 1, SR_CHANNEL_ANALOG, TRUE, "I"); | |
81 | ||
82 | devc = g_malloc0(sizeof(struct dev_context)); | |
83 | g_mutex_init(&devc->rw_mutex); | |
84 | devc->current_limit = 0; | |
85 | devc->running = FALSE; | |
86 | devc->load_activated = FALSE; | |
87 | sr_sw_limits_init(&devc->limits); | |
88 | sdi->priv = devc; | |
89 | ||
90 | /* Starting device. */ | |
91 | ebd_init(serial, devc); | |
92 | int ret = ebd_read_chars(serial, MSG_LEN, reply); | |
93 | if (ret != MSG_LEN || reply[MSG_FRAME_BEGIN_POS] != MSG_FRAME_BEGIN \ | |
94 | || reply[MSG_FRAME_END_POS] != MSG_FRAME_END) { | |
95 | sr_warn("Invalid message received!"); | |
96 | ret = SR_ERR; | |
97 | } | |
98 | ebd_stop(serial, devc); | |
99 | ||
100 | serial_close(serial); | |
101 | ||
102 | if (ret < 0) | |
103 | return NULL; | |
104 | ||
105 | return std_scan_complete(di, g_slist_append(NULL, sdi)); | |
106 | } | |
107 | ||
108 | static int dev_close(struct sr_dev_inst *sdi) | |
109 | { | |
110 | struct dev_context *devc; | |
111 | ||
112 | devc = (sdi) ? sdi->priv : NULL; | |
113 | if (devc) | |
114 | g_mutex_clear(&devc->rw_mutex); | |
115 | ||
116 | return std_serial_dev_close(sdi); | |
117 | } | |
118 | ||
119 | static int config_get(uint32_t key, GVariant **data, | |
120 | const struct sr_dev_inst *sdi, const struct sr_channel_group *cg) | |
121 | { | |
122 | int ret; | |
123 | struct dev_context *devc; | |
124 | float fvalue; | |
125 | ||
126 | (void)cg; | |
127 | ||
128 | if (!sdi || !data) | |
129 | return SR_ERR_ARG; | |
130 | ||
131 | devc = sdi->priv; | |
132 | ||
133 | switch (key) { | |
134 | case SR_CONF_LIMIT_SAMPLES: | |
135 | case SR_CONF_LIMIT_MSEC: | |
136 | return sr_sw_limits_config_get(&devc->limits, key, data); | |
137 | case SR_CONF_CURRENT_LIMIT: | |
138 | ret = ebd_get_current_limit(sdi, &fvalue); | |
139 | if (ret == SR_OK) | |
140 | *data = g_variant_new_double(fvalue); | |
141 | return ret; | |
142 | default: | |
143 | return SR_ERR_NA; | |
144 | } | |
145 | } | |
146 | ||
147 | static int config_set(uint32_t key, GVariant *data, | |
148 | const struct sr_dev_inst *sdi, const struct sr_channel_group *cg) | |
149 | { | |
150 | double value; | |
151 | struct dev_context *devc; | |
152 | ||
153 | (void)data; | |
154 | (void)cg; | |
155 | ||
156 | devc = sdi->priv; | |
157 | ||
158 | switch (key) { | |
159 | case SR_CONF_LIMIT_MSEC: | |
160 | case SR_CONF_LIMIT_SAMPLES: | |
161 | return sr_sw_limits_config_set(&devc->limits, key, data); | |
162 | case SR_CONF_CURRENT_LIMIT: | |
163 | value = g_variant_get_double(data); | |
164 | if (value < 0.0 || value > 4.0) | |
165 | return SR_ERR_ARG; | |
166 | return ebd_set_current_limit(sdi, value); | |
167 | default: | |
168 | return SR_ERR_NA; | |
169 | } | |
170 | } | |
171 | ||
172 | static int config_list(uint32_t key, GVariant **data, | |
173 | const struct sr_dev_inst *sdi, const struct sr_channel_group *cg) | |
174 | { | |
175 | switch (key) { | |
176 | case SR_CONF_SCAN_OPTIONS: | |
177 | case SR_CONF_DEVICE_OPTIONS: | |
178 | return STD_CONFIG_LIST(key, data, sdi, cg, scanopts, drvopts, devopts); | |
179 | case SR_CONF_CURRENT_LIMIT: | |
180 | *data = std_gvar_min_max_step(0.0, 4.0, 0.01); | |
181 | break; | |
182 | default: | |
183 | return SR_ERR_NA; | |
184 | } | |
185 | ||
186 | return SR_OK; | |
187 | } | |
188 | ||
189 | static int dev_acquisition_start(const struct sr_dev_inst *sdi) | |
190 | { | |
191 | struct dev_context *devc; | |
192 | struct sr_serial_dev_inst *serial; | |
193 | ||
194 | devc = sdi->priv; | |
195 | serial = sdi->conn; | |
196 | ||
197 | sr_sw_limits_acquisition_start(&devc->limits); | |
198 | std_session_send_df_header(sdi); | |
199 | ||
200 | ebd_init(serial, devc); | |
201 | if (!ebd_current_is0(devc)) | |
202 | ebd_loadstart(serial, devc); | |
203 | ||
204 | serial_source_add(sdi->session, serial, G_IO_IN, 100, | |
205 | ebd_receive_data, (void *)sdi); | |
206 | ||
207 | return SR_OK; | |
208 | } | |
209 | ||
210 | static int dev_acquisition_stop(struct sr_dev_inst *sdi) | |
211 | { | |
212 | ebd_loadstop(sdi->conn, sdi->priv); | |
213 | ||
214 | return std_serial_dev_acquisition_stop(sdi); | |
215 | } | |
216 | ||
217 | static struct sr_dev_driver zketech_ebd_usb_driver_info = { | |
218 | .name = "zketech-ebd-usb", | |
219 | .longname = "ZKETECH EBD-USB", | |
220 | .api_version = 1, | |
221 | .init = std_init, | |
222 | .cleanup = std_cleanup, | |
223 | .scan = scan, | |
224 | .dev_list = std_dev_list, | |
225 | .dev_clear = std_dev_clear, | |
226 | .config_get = config_get, | |
227 | .config_set = config_set, | |
228 | .config_list = config_list, | |
229 | .dev_open = std_serial_dev_open, | |
230 | .dev_close = dev_close, | |
231 | .dev_acquisition_start = dev_acquisition_start, | |
232 | .dev_acquisition_stop = dev_acquisition_stop, | |
233 | .context = NULL, | |
234 | }; | |
235 | SR_REGISTER_DEV_DRIVER(zketech_ebd_usb_driver_info); |