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1 | /* | |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2013 Bert Vermeulen <bert@biot.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 <string.h> | |
22 | #include "protocol.h" | |
23 | ||
24 | static const uint32_t devopts[] = { | |
25 | SR_CONF_THERMOMETER, | |
26 | SR_CONF_CONTINUOUS, | |
27 | SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET, | |
28 | SR_CONF_DATA_SOURCE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
29 | }; | |
30 | ||
31 | static const char *channel_names[] = { | |
32 | "T1", "T2", "T1-T2", | |
33 | }; | |
34 | ||
35 | static const char *data_sources[] = { | |
36 | "Live", | |
37 | "Memory", | |
38 | }; | |
39 | ||
40 | SR_PRIV struct sr_dev_driver uni_t_ut32x_driver_info; | |
41 | ||
42 | static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx) | |
43 | { | |
44 | return std_init(sr_ctx, di, LOG_PREFIX); | |
45 | } | |
46 | ||
47 | static GSList *scan(struct sr_dev_driver *di, GSList *options) | |
48 | { | |
49 | struct drv_context *drvc; | |
50 | struct dev_context *devc; | |
51 | struct sr_dev_inst *sdi; | |
52 | struct sr_config *src; | |
53 | GSList *usb_devices, *devices, *l; | |
54 | unsigned int i; | |
55 | const char *conn; | |
56 | ||
57 | drvc = di->context; | |
58 | drvc->instances = NULL; | |
59 | ||
60 | conn = NULL; | |
61 | for (l = options; l; l = l->next) { | |
62 | src = l->data; | |
63 | switch (src->key) { | |
64 | case SR_CONF_CONN: | |
65 | conn = g_variant_get_string(src->data, NULL); | |
66 | break; | |
67 | } | |
68 | } | |
69 | if (!conn) | |
70 | return NULL; | |
71 | ||
72 | devices = NULL; | |
73 | if ((usb_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn))) { | |
74 | /* We have a list of sr_usb_dev_inst matching the connection | |
75 | * string. Wrap them in sr_dev_inst and we're done. */ | |
76 | for (l = usb_devices; l; l = l->next) { | |
77 | sdi = g_malloc0(sizeof(struct sr_dev_inst)); | |
78 | sdi->status = SR_ST_INACTIVE; | |
79 | sdi->vendor = g_strdup(VENDOR); | |
80 | sdi->model = g_strdup(MODEL); | |
81 | sdi->driver = di; | |
82 | sdi->inst_type = SR_INST_USB; | |
83 | sdi->conn = l->data; | |
84 | for (i = 0; i < ARRAY_SIZE(channel_names); i++) | |
85 | sr_channel_new(sdi, i, SR_CHANNEL_ANALOG, TRUE, | |
86 | channel_names[i]); | |
87 | devc = g_malloc0(sizeof(struct dev_context)); | |
88 | sdi->priv = devc; | |
89 | devc->limit_samples = 0; | |
90 | devc->data_source = DEFAULT_DATA_SOURCE; | |
91 | drvc->instances = g_slist_append(drvc->instances, sdi); | |
92 | devices = g_slist_append(devices, sdi); | |
93 | } | |
94 | g_slist_free(usb_devices); | |
95 | } else | |
96 | g_slist_free_full(usb_devices, g_free); | |
97 | ||
98 | return devices; | |
99 | } | |
100 | ||
101 | static int dev_open(struct sr_dev_inst *sdi) | |
102 | { | |
103 | struct sr_dev_driver *di = sdi->driver; | |
104 | struct drv_context *drvc; | |
105 | struct sr_usb_dev_inst *usb; | |
106 | int ret; | |
107 | ||
108 | if (!(drvc = di->context)) { | |
109 | sr_err("Driver was not initialized."); | |
110 | return SR_ERR; | |
111 | } | |
112 | ||
113 | usb = sdi->conn; | |
114 | ||
115 | if (sr_usb_open(drvc->sr_ctx->libusb_ctx, usb) != SR_OK) | |
116 | return SR_ERR; | |
117 | ||
118 | /* | |
119 | * The libusb 1.0.9 Darwin backend is broken: it can report a kernel | |
120 | * driver being active, but detaching it always returns an error. | |
121 | */ | |
122 | #if !defined(__APPLE__) | |
123 | if (libusb_kernel_driver_active(usb->devhdl, USB_INTERFACE) == 1) { | |
124 | if ((ret = libusb_detach_kernel_driver(usb->devhdl, USB_INTERFACE)) < 0) { | |
125 | sr_err("failed to detach kernel driver: %s", | |
126 | libusb_error_name(ret)); | |
127 | return SR_ERR; | |
128 | } | |
129 | } | |
130 | #endif | |
131 | ||
132 | if ((ret = libusb_set_configuration(usb->devhdl, USB_CONFIGURATION))) { | |
133 | sr_err("Failed to set configuration: %s.", libusb_error_name(ret)); | |
134 | return SR_ERR; | |
135 | } | |
136 | ||
137 | if ((ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE))) { | |
138 | sr_err("Failed to claim interface: %s.", libusb_error_name(ret)); | |
139 | return SR_ERR; | |
140 | } | |
141 | sdi->status = SR_ST_ACTIVE; | |
142 | ||
143 | return ret; | |
144 | } | |
145 | ||
146 | static int dev_close(struct sr_dev_inst *sdi) | |
147 | { | |
148 | struct sr_dev_driver *di = sdi->driver; | |
149 | struct sr_usb_dev_inst *usb; | |
150 | ||
151 | if (!di->context) { | |
152 | sr_err("Driver was not initialized."); | |
153 | return SR_ERR; | |
154 | } | |
155 | ||
156 | usb = sdi->conn; | |
157 | if (!usb->devhdl) | |
158 | /* Nothing to do. */ | |
159 | return SR_OK; | |
160 | ||
161 | libusb_release_interface(usb->devhdl, USB_INTERFACE); | |
162 | libusb_close(usb->devhdl); | |
163 | usb->devhdl = NULL; | |
164 | sdi->status = SR_ST_INACTIVE; | |
165 | ||
166 | return SR_OK; | |
167 | } | |
168 | ||
169 | static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, | |
170 | const struct sr_channel_group *cg) | |
171 | { | |
172 | struct dev_context *devc; | |
173 | ||
174 | (void)cg; | |
175 | ||
176 | devc = sdi->priv; | |
177 | switch (key) { | |
178 | case SR_CONF_LIMIT_SAMPLES: | |
179 | *data = g_variant_new_uint64(devc->limit_samples); | |
180 | break; | |
181 | case SR_CONF_DATA_SOURCE: | |
182 | if (devc->data_source == DATA_SOURCE_LIVE) | |
183 | *data = g_variant_new_string("Live"); | |
184 | else | |
185 | *data = g_variant_new_string("Memory"); | |
186 | break; | |
187 | default: | |
188 | return SR_ERR_NA; | |
189 | } | |
190 | ||
191 | return SR_OK; | |
192 | } | |
193 | ||
194 | static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi, | |
195 | const struct sr_channel_group *cg) | |
196 | { | |
197 | struct sr_dev_driver *di = sdi->driver; | |
198 | struct dev_context *devc; | |
199 | const char *tmp_str; | |
200 | ||
201 | (void)cg; | |
202 | ||
203 | if (sdi->status != SR_ST_ACTIVE) | |
204 | return SR_ERR_DEV_CLOSED; | |
205 | ||
206 | if (!di->context) { | |
207 | sr_err("Driver was not initialized."); | |
208 | return SR_ERR; | |
209 | } | |
210 | ||
211 | devc = sdi->priv; | |
212 | ||
213 | switch (key) { | |
214 | case SR_CONF_LIMIT_SAMPLES: | |
215 | devc->limit_samples = g_variant_get_uint64(data); | |
216 | break; | |
217 | case SR_CONF_DATA_SOURCE: | |
218 | tmp_str = g_variant_get_string(data, NULL); | |
219 | if (!strcmp(tmp_str, "Live")) | |
220 | devc->data_source = DATA_SOURCE_LIVE; | |
221 | else if (!strcmp(tmp_str, "Memory")) | |
222 | devc->data_source = DATA_SOURCE_MEMORY; | |
223 | else | |
224 | return SR_ERR; | |
225 | break; | |
226 | default: | |
227 | return SR_ERR_NA; | |
228 | } | |
229 | ||
230 | return SR_OK; | |
231 | } | |
232 | ||
233 | static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, | |
234 | const struct sr_channel_group *cg) | |
235 | { | |
236 | (void)sdi; | |
237 | (void)cg; | |
238 | ||
239 | switch (key) { | |
240 | case SR_CONF_DEVICE_OPTIONS: | |
241 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
242 | devopts, ARRAY_SIZE(devopts), sizeof(uint32_t)); | |
243 | break; | |
244 | case SR_CONF_DATA_SOURCE: | |
245 | *data = g_variant_new_strv(data_sources, ARRAY_SIZE(data_sources)); | |
246 | break; | |
247 | default: | |
248 | return SR_ERR_NA; | |
249 | } | |
250 | ||
251 | return SR_OK; | |
252 | } | |
253 | ||
254 | static int dev_acquisition_start(const struct sr_dev_inst *sdi) | |
255 | { | |
256 | struct sr_dev_driver *di = sdi->driver; | |
257 | struct drv_context *drvc; | |
258 | struct dev_context *devc; | |
259 | struct sr_usb_dev_inst *usb; | |
260 | int len, ret; | |
261 | unsigned char cmd[2]; | |
262 | ||
263 | if (sdi->status != SR_ST_ACTIVE) | |
264 | return SR_ERR_DEV_CLOSED; | |
265 | ||
266 | drvc = di->context; | |
267 | devc = sdi->priv; | |
268 | usb = sdi->conn; | |
269 | ||
270 | devc->num_samples = 0; | |
271 | devc->packet_len = 0; | |
272 | ||
273 | /* Configure serial port parameters on USB-UART interface | |
274 | * chip inside the device (just baudrate 2400 actually). */ | |
275 | cmd[0] = 0x09; | |
276 | cmd[1] = 0x60; | |
277 | ret = libusb_control_transfer(usb->devhdl, 0x21, 0x09, 0x0300, 0x00, | |
278 | cmd, 2, 5); | |
279 | if (ret != 2) { | |
280 | sr_dbg("Failed to configure CH9325: %s", libusb_error_name(ret)); | |
281 | return SR_ERR; | |
282 | } | |
283 | ||
284 | std_session_send_df_header(sdi, LOG_PREFIX); | |
285 | ||
286 | if (!(devc->xfer = libusb_alloc_transfer(0))) | |
287 | return SR_ERR; | |
288 | ||
289 | /* Length of payload to follow. */ | |
290 | cmd[0] = 0x01; | |
291 | if (devc->data_source == DATA_SOURCE_LIVE) | |
292 | cmd[1] = CMD_GET_LIVE; | |
293 | else | |
294 | cmd[1] = CMD_GET_STORED; | |
295 | ||
296 | ret = libusb_bulk_transfer(usb->devhdl, EP_OUT, cmd, 2, &len, 5); | |
297 | if (ret != 0 || len != 2) { | |
298 | sr_dbg("Failed to start acquisition: %s", libusb_error_name(ret)); | |
299 | libusb_free_transfer(devc->xfer); | |
300 | return SR_ERR; | |
301 | } | |
302 | ||
303 | libusb_fill_bulk_transfer(devc->xfer, usb->devhdl, EP_IN, devc->buf, | |
304 | 8, uni_t_ut32x_receive_transfer, (void *)sdi, 15); | |
305 | if (libusb_submit_transfer(devc->xfer) != 0) { | |
306 | libusb_free_transfer(devc->xfer); | |
307 | return SR_ERR; | |
308 | } | |
309 | ||
310 | usb_source_add(sdi->session, drvc->sr_ctx, 10, | |
311 | uni_t_ut32x_handle_events, (void *)sdi); | |
312 | ||
313 | return SR_OK; | |
314 | } | |
315 | ||
316 | static int dev_acquisition_stop(struct sr_dev_inst *sdi) | |
317 | { | |
318 | if (sdi->status != SR_ST_ACTIVE) | |
319 | return SR_ERR_DEV_CLOSED; | |
320 | ||
321 | /* Signal USB transfer handler to clean up and stop. */ | |
322 | sdi->status = SR_ST_STOPPING; | |
323 | ||
324 | return SR_OK; | |
325 | } | |
326 | ||
327 | SR_PRIV struct sr_dev_driver uni_t_ut32x_driver_info = { | |
328 | .name = "uni-t-ut32x", | |
329 | .longname = "UNI-T UT32x", | |
330 | .api_version = 1, | |
331 | .init = init, | |
332 | .cleanup = std_cleanup, | |
333 | .scan = scan, | |
334 | .dev_list = std_dev_list, | |
335 | .dev_clear = NULL, | |
336 | .config_get = config_get, | |
337 | .config_set = config_set, | |
338 | .config_list = config_list, | |
339 | .dev_open = dev_open, | |
340 | .dev_close = dev_close, | |
341 | .dev_acquisition_start = dev_acquisition_start, | |
342 | .dev_acquisition_stop = dev_acquisition_stop, | |
343 | .context = NULL, | |
344 | }; |