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3877dde4 BV |
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 | ||
6ec6c43b | 20 | #include <config.h> |
6513f97f | 21 | #include <string.h> |
515ab088 | 22 | #include "protocol.h" |
6513f97f | 23 | |
f254bc4b | 24 | static const uint32_t devopts[] = { |
6513f97f | 25 | SR_CONF_THERMOMETER, |
6513f97f | 26 | SR_CONF_CONTINUOUS, |
5827f61b BV |
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, | |
6513f97f BV |
29 | }; |
30 | ||
0f34cb47 UH |
31 | static const char *channel_names[] = { |
32 | "T1", "T2", "T1-T2", | |
6513f97f BV |
33 | }; |
34 | ||
35 | static const char *data_sources[] = { | |
36 | "Live", | |
37 | "Memory", | |
38 | }; | |
39 | ||
3877dde4 | 40 | SR_PRIV struct sr_dev_driver uni_t_ut32x_driver_info; |
3877dde4 | 41 | |
4f840ce9 | 42 | static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx) |
3877dde4 BV |
43 | { |
44 | return std_init(sr_ctx, di, LOG_PREFIX); | |
45 | } | |
46 | ||
4f840ce9 | 47 | static GSList *scan(struct sr_dev_driver *di, GSList *options) |
3877dde4 BV |
48 | { |
49 | struct drv_context *drvc; | |
6513f97f BV |
50 | struct dev_context *devc; |
51 | struct sr_dev_inst *sdi; | |
6513f97f BV |
52 | struct sr_config *src; |
53 | GSList *usb_devices, *devices, *l; | |
07ffa5b3 | 54 | unsigned int i; |
6513f97f | 55 | const char *conn; |
3877dde4 | 56 | |
41812aca | 57 | drvc = di->context; |
3877dde4 BV |
58 | drvc->instances = NULL; |
59 | ||
6513f97f BV |
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; | |
e196cb61 | 73 | if ((usb_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn))) { |
6513f97f BV |
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) { | |
aac29cc1 | 77 | sdi = g_malloc0(sizeof(struct sr_dev_inst)); |
0af636be UH |
78 | sdi->status = SR_ST_INACTIVE; |
79 | sdi->vendor = g_strdup(VENDOR); | |
80 | sdi->model = g_strdup(MODEL); | |
6513f97f BV |
81 | sdi->driver = di; |
82 | sdi->inst_type = SR_INST_USB; | |
83 | sdi->conn = l->data; | |
07ffa5b3 | 84 | for (i = 0; i < ARRAY_SIZE(channel_names); i++) |
0f34cb47 UH |
85 | sr_channel_new(sdi, i, SR_CHANNEL_ANALOG, TRUE, |
86 | channel_names[i]); | |
f57d8ffe | 87 | devc = g_malloc0(sizeof(struct dev_context)); |
6513f97f BV |
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); | |
3877dde4 BV |
97 | |
98 | return devices; | |
99 | } | |
100 | ||
4f840ce9 | 101 | static GSList *dev_list(const struct sr_dev_driver *di) |
3877dde4 | 102 | { |
41812aca | 103 | return ((struct drv_context *)(di->context))->instances; |
3877dde4 BV |
104 | } |
105 | ||
3877dde4 BV |
106 | static int dev_open(struct sr_dev_inst *sdi) |
107 | { | |
4f840ce9 | 108 | struct sr_dev_driver *di = sdi->driver; |
6513f97f BV |
109 | struct drv_context *drvc; |
110 | struct sr_usb_dev_inst *usb; | |
111 | int ret; | |
112 | ||
41812aca | 113 | if (!(drvc = di->context)) { |
6513f97f BV |
114 | sr_err("Driver was not initialized."); |
115 | return SR_ERR; | |
116 | } | |
117 | ||
118 | usb = sdi->conn; | |
119 | ||
120 | if (sr_usb_open(drvc->sr_ctx->libusb_ctx, usb) != SR_OK) | |
121 | return SR_ERR; | |
122 | ||
123 | /* | |
f3f19d11 | 124 | * The libusb 1.0.9 Darwin backend is broken: it can report a kernel |
6513f97f BV |
125 | * driver being active, but detaching it always returns an error. |
126 | */ | |
127 | #if !defined(__APPLE__) | |
d6ff054a BV |
128 | if (libusb_kernel_driver_active(usb->devhdl, USB_INTERFACE) == 1) { |
129 | if ((ret = libusb_detach_kernel_driver(usb->devhdl, USB_INTERFACE)) < 0) { | |
6513f97f BV |
130 | sr_err("failed to detach kernel driver: %s", |
131 | libusb_error_name(ret)); | |
132 | return SR_ERR; | |
133 | } | |
134 | } | |
135 | #endif | |
3877dde4 | 136 | |
d6ff054a | 137 | if ((ret = libusb_set_configuration(usb->devhdl, USB_CONFIGURATION))) { |
6513f97f BV |
138 | sr_err("Failed to set configuration: %s.", libusb_error_name(ret)); |
139 | return SR_ERR; | |
140 | } | |
3877dde4 | 141 | |
6513f97f BV |
142 | if ((ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE))) { |
143 | sr_err("Failed to claim interface: %s.", libusb_error_name(ret)); | |
144 | return SR_ERR; | |
145 | } | |
3877dde4 BV |
146 | sdi->status = SR_ST_ACTIVE; |
147 | ||
6513f97f | 148 | return ret; |
3877dde4 BV |
149 | } |
150 | ||
151 | static int dev_close(struct sr_dev_inst *sdi) | |
152 | { | |
4f840ce9 | 153 | struct sr_dev_driver *di = sdi->driver; |
6513f97f | 154 | struct sr_usb_dev_inst *usb; |
3877dde4 | 155 | |
41812aca | 156 | if (!di->context) { |
6513f97f BV |
157 | sr_err("Driver was not initialized."); |
158 | return SR_ERR; | |
159 | } | |
160 | ||
161 | usb = sdi->conn; | |
162 | if (!usb->devhdl) | |
163 | /* Nothing to do. */ | |
164 | return SR_OK; | |
3877dde4 | 165 | |
6513f97f BV |
166 | libusb_release_interface(usb->devhdl, USB_INTERFACE); |
167 | libusb_close(usb->devhdl); | |
168 | usb->devhdl = NULL; | |
3877dde4 BV |
169 | sdi->status = SR_ST_INACTIVE; |
170 | ||
171 | return SR_OK; | |
172 | } | |
173 | ||
4f840ce9 | 174 | static int cleanup(const struct sr_dev_driver *di) |
3877dde4 | 175 | { |
6513f97f BV |
176 | int ret; |
177 | struct drv_context *drvc; | |
3877dde4 | 178 | |
41812aca | 179 | if (!(drvc = di->context)) |
6513f97f BV |
180 | /* Can get called on an unused driver, doesn't matter. */ |
181 | return SR_OK; | |
3877dde4 | 182 | |
a6630742 | 183 | ret = std_dev_clear(di, NULL); |
6513f97f | 184 | g_free(drvc); |
6513f97f BV |
185 | |
186 | return ret; | |
3877dde4 BV |
187 | } |
188 | ||
584560f1 | 189 | static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, |
53b4680f | 190 | const struct sr_channel_group *cg) |
3877dde4 | 191 | { |
6513f97f | 192 | struct dev_context *devc; |
3877dde4 | 193 | |
53b4680f | 194 | (void)cg; |
d3c74a6f | 195 | |
6513f97f | 196 | devc = sdi->priv; |
3877dde4 | 197 | switch (key) { |
6513f97f BV |
198 | case SR_CONF_LIMIT_SAMPLES: |
199 | *data = g_variant_new_uint64(devc->limit_samples); | |
200 | break; | |
201 | case SR_CONF_DATA_SOURCE: | |
202 | if (devc->data_source == DATA_SOURCE_LIVE) | |
203 | *data = g_variant_new_string("Live"); | |
204 | else | |
205 | *data = g_variant_new_string("Memory"); | |
206 | break; | |
3877dde4 BV |
207 | default: |
208 | return SR_ERR_NA; | |
209 | } | |
210 | ||
6513f97f | 211 | return SR_OK; |
3877dde4 BV |
212 | } |
213 | ||
584560f1 | 214 | static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi, |
53b4680f | 215 | const struct sr_channel_group *cg) |
3877dde4 | 216 | { |
4f840ce9 | 217 | struct sr_dev_driver *di = sdi->driver; |
6513f97f | 218 | struct dev_context *devc; |
6513f97f | 219 | const char *tmp_str; |
3877dde4 | 220 | |
53b4680f | 221 | (void)cg; |
d3c74a6f | 222 | |
3877dde4 BV |
223 | if (sdi->status != SR_ST_ACTIVE) |
224 | return SR_ERR_DEV_CLOSED; | |
225 | ||
41812aca | 226 | if (!di->context) { |
6513f97f BV |
227 | sr_err("Driver was not initialized."); |
228 | return SR_ERR; | |
229 | } | |
230 | ||
231 | devc = sdi->priv; | |
dcd438ee | 232 | |
3877dde4 | 233 | switch (key) { |
6513f97f BV |
234 | case SR_CONF_LIMIT_SAMPLES: |
235 | devc->limit_samples = g_variant_get_uint64(data); | |
6513f97f BV |
236 | break; |
237 | case SR_CONF_DATA_SOURCE: | |
238 | tmp_str = g_variant_get_string(data, NULL); | |
239 | if (!strcmp(tmp_str, "Live")) | |
240 | devc->data_source = DATA_SOURCE_LIVE; | |
241 | else if (!strcmp(tmp_str, "Memory")) | |
242 | devc->data_source = DATA_SOURCE_MEMORY; | |
243 | else | |
244 | return SR_ERR; | |
245 | break; | |
3877dde4 | 246 | default: |
dcd438ee | 247 | return SR_ERR_NA; |
3877dde4 BV |
248 | } |
249 | ||
dcd438ee | 250 | return SR_OK; |
3877dde4 BV |
251 | } |
252 | ||
584560f1 | 253 | static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, |
53b4680f | 254 | const struct sr_channel_group *cg) |
3877dde4 | 255 | { |
3877dde4 | 256 | (void)sdi; |
53b4680f | 257 | (void)cg; |
3877dde4 | 258 | |
3877dde4 | 259 | switch (key) { |
6513f97f | 260 | case SR_CONF_DEVICE_OPTIONS: |
584560f1 | 261 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, |
f254bc4b | 262 | devopts, ARRAY_SIZE(devopts), sizeof(uint32_t)); |
6513f97f BV |
263 | break; |
264 | case SR_CONF_DATA_SOURCE: | |
265 | *data = g_variant_new_strv(data_sources, ARRAY_SIZE(data_sources)); | |
266 | break; | |
3877dde4 BV |
267 | default: |
268 | return SR_ERR_NA; | |
269 | } | |
270 | ||
6513f97f | 271 | return SR_OK; |
3877dde4 BV |
272 | } |
273 | ||
274 | static int dev_acquisition_start(const struct sr_dev_inst *sdi, | |
275 | void *cb_data) | |
276 | { | |
4f840ce9 | 277 | struct sr_dev_driver *di = sdi->driver; |
6513f97f BV |
278 | struct drv_context *drvc; |
279 | struct dev_context *devc; | |
280 | struct sr_usb_dev_inst *usb; | |
6c60facc | 281 | int len, ret; |
6513f97f | 282 | unsigned char cmd[2]; |
3877dde4 BV |
283 | |
284 | if (sdi->status != SR_ST_ACTIVE) | |
285 | return SR_ERR_DEV_CLOSED; | |
286 | ||
41812aca | 287 | drvc = di->context; |
6513f97f BV |
288 | devc = sdi->priv; |
289 | usb = sdi->conn; | |
290 | ||
291 | devc->cb_data = cb_data; | |
292 | devc->num_samples = 0; | |
d6ff054a BV |
293 | devc->packet_len = 0; |
294 | ||
295 | /* Configure serial port parameters on USB-UART interface | |
296 | * chip inside the device (just baudrate 2400 actually). */ | |
297 | cmd[0] = 0x09; | |
298 | cmd[1] = 0x60; | |
299 | ret = libusb_control_transfer(usb->devhdl, 0x21, 0x09, 0x0300, 0x00, | |
300 | cmd, 2, 5); | |
301 | if (ret != 2) { | |
302 | sr_dbg("Failed to configure CH9325: %s", libusb_error_name(ret)); | |
303 | return SR_ERR; | |
304 | } | |
6513f97f BV |
305 | |
306 | /* Send header packet to the session bus. */ | |
307 | std_session_send_df_header(cb_data, LOG_PREFIX); | |
308 | ||
309 | if (!(devc->xfer = libusb_alloc_transfer(0))) | |
310 | return SR_ERR; | |
311 | ||
6513f97f BV |
312 | /* Length of payload to follow. */ |
313 | cmd[0] = 0x01; | |
314 | if (devc->data_source == DATA_SOURCE_LIVE) | |
315 | cmd[1] = CMD_GET_LIVE; | |
316 | else | |
317 | cmd[1] = CMD_GET_STORED; | |
318 | ||
319 | ret = libusb_bulk_transfer(usb->devhdl, EP_OUT, cmd, 2, &len, 5); | |
320 | if (ret != 0 || len != 2) { | |
321 | sr_dbg("Failed to start acquisition: %s", libusb_error_name(ret)); | |
322 | libusb_free_transfer(devc->xfer); | |
323 | return SR_ERR; | |
324 | } | |
325 | ||
326 | libusb_fill_bulk_transfer(devc->xfer, usb->devhdl, EP_IN, devc->buf, | |
d6ff054a | 327 | 8, uni_t_ut32x_receive_transfer, (void *)sdi, 15); |
6513f97f BV |
328 | if (libusb_submit_transfer(devc->xfer) != 0) { |
329 | libusb_free_transfer(devc->xfer); | |
330 | return SR_ERR; | |
331 | } | |
3877dde4 | 332 | |
102f1239 BV |
333 | usb_source_add(sdi->session, drvc->sr_ctx, 10, |
334 | uni_t_ut32x_handle_events, (void *)sdi); | |
d6ff054a | 335 | |
3877dde4 BV |
336 | return SR_OK; |
337 | } | |
338 | ||
339 | static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) | |
340 | { | |
d6ff054a | 341 | |
3877dde4 BV |
342 | (void)cb_data; |
343 | ||
344 | if (sdi->status != SR_ST_ACTIVE) | |
345 | return SR_ERR_DEV_CLOSED; | |
346 | ||
d6ff054a BV |
347 | /* Signal USB transfer handler to clean up and stop. */ |
348 | sdi->status = SR_ST_STOPPING; | |
3877dde4 BV |
349 | |
350 | return SR_OK; | |
351 | } | |
352 | ||
353 | SR_PRIV struct sr_dev_driver uni_t_ut32x_driver_info = { | |
354 | .name = "uni-t-ut32x", | |
355 | .longname = "UNI-T UT32x", | |
356 | .api_version = 1, | |
357 | .init = init, | |
358 | .cleanup = cleanup, | |
359 | .scan = scan, | |
360 | .dev_list = dev_list, | |
a6630742 | 361 | .dev_clear = NULL, |
3877dde4 BV |
362 | .config_get = config_get, |
363 | .config_set = config_set, | |
364 | .config_list = config_list, | |
365 | .dev_open = dev_open, | |
366 | .dev_close = dev_close, | |
367 | .dev_acquisition_start = dev_acquisition_start, | |
368 | .dev_acquisition_stop = dev_acquisition_stop, | |
41812aca | 369 | .context = NULL, |
3877dde4 | 370 | }; |