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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 | ||
20 | #include "protocol.h" | |
21 | ||
6513f97f BV |
22 | #include <string.h> |
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 | ||
ba7dd8bb | 31 | static char *channels[] = { |
6513f97f BV |
32 | "T1", |
33 | "T2", | |
34 | "T1-T2", | |
35 | }; | |
36 | ||
37 | static const char *data_sources[] = { | |
38 | "Live", | |
39 | "Memory", | |
40 | }; | |
41 | ||
3877dde4 BV |
42 | SR_PRIV struct sr_dev_driver uni_t_ut32x_driver_info; |
43 | static struct sr_dev_driver *di = &uni_t_ut32x_driver_info; | |
44 | ||
45 | ||
46 | static int init(struct sr_context *sr_ctx) | |
47 | { | |
48 | return std_init(sr_ctx, di, LOG_PREFIX); | |
49 | } | |
50 | ||
51 | static GSList *scan(GSList *options) | |
52 | { | |
53 | struct drv_context *drvc; | |
6513f97f BV |
54 | struct dev_context *devc; |
55 | struct sr_dev_inst *sdi; | |
ba7dd8bb | 56 | struct sr_channel *ch; |
6513f97f BV |
57 | struct sr_config *src; |
58 | GSList *usb_devices, *devices, *l; | |
59 | int i; | |
60 | const char *conn; | |
3877dde4 | 61 | |
3877dde4 BV |
62 | drvc = di->priv; |
63 | drvc->instances = NULL; | |
64 | ||
6513f97f BV |
65 | conn = NULL; |
66 | for (l = options; l; l = l->next) { | |
67 | src = l->data; | |
68 | switch (src->key) { | |
69 | case SR_CONF_CONN: | |
70 | conn = g_variant_get_string(src->data, NULL); | |
71 | break; | |
72 | } | |
73 | } | |
74 | if (!conn) | |
75 | return NULL; | |
76 | ||
77 | devices = NULL; | |
e196cb61 | 78 | if ((usb_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn))) { |
6513f97f BV |
79 | /* We have a list of sr_usb_dev_inst matching the connection |
80 | * string. Wrap them in sr_dev_inst and we're done. */ | |
81 | for (l = usb_devices; l; l = l->next) { | |
0af636be UH |
82 | sdi = sr_dev_inst_new(); |
83 | sdi->status = SR_ST_INACTIVE; | |
84 | sdi->vendor = g_strdup(VENDOR); | |
85 | sdi->model = g_strdup(MODEL); | |
6513f97f BV |
86 | sdi->driver = di; |
87 | sdi->inst_type = SR_INST_USB; | |
88 | sdi->conn = l->data; | |
89 | for (i = 0; i < 3; i++) { | |
3f239f08 | 90 | if (!(ch = sr_channel_new(i, SR_CHANNEL_ANALOG, TRUE, |
ba7dd8bb UH |
91 | channels[i]))) { |
92 | sr_dbg("Channel malloc failed."); | |
6513f97f BV |
93 | return NULL; |
94 | } | |
ba7dd8bb | 95 | sdi->channels = g_slist_append(sdi->channels, ch); |
6513f97f BV |
96 | } |
97 | ||
98 | if (!(devc = g_try_malloc(sizeof(struct dev_context)))) { | |
99 | sr_dbg("Device context malloc failed."); | |
100 | return NULL; | |
101 | } | |
102 | sdi->priv = devc; | |
103 | devc->limit_samples = 0; | |
104 | devc->data_source = DEFAULT_DATA_SOURCE; | |
105 | drvc->instances = g_slist_append(drvc->instances, sdi); | |
106 | devices = g_slist_append(devices, sdi); | |
107 | } | |
108 | g_slist_free(usb_devices); | |
109 | } else | |
110 | g_slist_free_full(usb_devices, g_free); | |
3877dde4 BV |
111 | |
112 | return devices; | |
113 | } | |
114 | ||
115 | static GSList *dev_list(void) | |
116 | { | |
45c0841b | 117 | return ((struct drv_context *)(di->priv))->instances; |
3877dde4 BV |
118 | } |
119 | ||
3877dde4 BV |
120 | static int dev_open(struct sr_dev_inst *sdi) |
121 | { | |
6513f97f BV |
122 | struct drv_context *drvc; |
123 | struct sr_usb_dev_inst *usb; | |
124 | int ret; | |
125 | ||
126 | if (!(drvc = di->priv)) { | |
127 | sr_err("Driver was not initialized."); | |
128 | return SR_ERR; | |
129 | } | |
130 | ||
131 | usb = sdi->conn; | |
132 | ||
133 | if (sr_usb_open(drvc->sr_ctx->libusb_ctx, usb) != SR_OK) | |
134 | return SR_ERR; | |
135 | ||
136 | /* | |
137 | * The libusbx 1.0.9 darwin backend is broken: it can report a kernel | |
138 | * driver being active, but detaching it always returns an error. | |
139 | */ | |
140 | #if !defined(__APPLE__) | |
d6ff054a BV |
141 | if (libusb_kernel_driver_active(usb->devhdl, USB_INTERFACE) == 1) { |
142 | if ((ret = libusb_detach_kernel_driver(usb->devhdl, USB_INTERFACE)) < 0) { | |
6513f97f BV |
143 | sr_err("failed to detach kernel driver: %s", |
144 | libusb_error_name(ret)); | |
145 | return SR_ERR; | |
146 | } | |
147 | } | |
148 | #endif | |
3877dde4 | 149 | |
d6ff054a | 150 | if ((ret = libusb_set_configuration(usb->devhdl, USB_CONFIGURATION))) { |
6513f97f BV |
151 | sr_err("Failed to set configuration: %s.", libusb_error_name(ret)); |
152 | return SR_ERR; | |
153 | } | |
3877dde4 | 154 | |
6513f97f BV |
155 | if ((ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE))) { |
156 | sr_err("Failed to claim interface: %s.", libusb_error_name(ret)); | |
157 | return SR_ERR; | |
158 | } | |
3877dde4 BV |
159 | sdi->status = SR_ST_ACTIVE; |
160 | ||
6513f97f | 161 | return ret; |
3877dde4 BV |
162 | } |
163 | ||
164 | static int dev_close(struct sr_dev_inst *sdi) | |
165 | { | |
6513f97f | 166 | struct sr_usb_dev_inst *usb; |
3877dde4 | 167 | |
6513f97f BV |
168 | if (!di->priv) { |
169 | sr_err("Driver was not initialized."); | |
170 | return SR_ERR; | |
171 | } | |
172 | ||
173 | usb = sdi->conn; | |
174 | if (!usb->devhdl) | |
175 | /* Nothing to do. */ | |
176 | return SR_OK; | |
3877dde4 | 177 | |
6513f97f BV |
178 | libusb_release_interface(usb->devhdl, USB_INTERFACE); |
179 | libusb_close(usb->devhdl); | |
180 | usb->devhdl = NULL; | |
3877dde4 BV |
181 | sdi->status = SR_ST_INACTIVE; |
182 | ||
183 | return SR_OK; | |
184 | } | |
185 | ||
186 | static int cleanup(void) | |
187 | { | |
6513f97f BV |
188 | int ret; |
189 | struct drv_context *drvc; | |
3877dde4 | 190 | |
6513f97f BV |
191 | if (!(drvc = di->priv)) |
192 | /* Can get called on an unused driver, doesn't matter. */ | |
193 | return SR_OK; | |
3877dde4 | 194 | |
a6630742 BV |
195 | |
196 | ret = std_dev_clear(di, NULL); | |
6513f97f BV |
197 | g_free(drvc); |
198 | di->priv = NULL; | |
199 | ||
200 | return ret; | |
3877dde4 BV |
201 | } |
202 | ||
584560f1 | 203 | static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, |
53b4680f | 204 | const struct sr_channel_group *cg) |
3877dde4 | 205 | { |
6513f97f | 206 | struct dev_context *devc; |
3877dde4 | 207 | |
53b4680f | 208 | (void)cg; |
d3c74a6f | 209 | |
6513f97f | 210 | devc = sdi->priv; |
3877dde4 | 211 | switch (key) { |
6513f97f BV |
212 | case SR_CONF_LIMIT_SAMPLES: |
213 | *data = g_variant_new_uint64(devc->limit_samples); | |
214 | break; | |
215 | case SR_CONF_DATA_SOURCE: | |
216 | if (devc->data_source == DATA_SOURCE_LIVE) | |
217 | *data = g_variant_new_string("Live"); | |
218 | else | |
219 | *data = g_variant_new_string("Memory"); | |
220 | break; | |
3877dde4 BV |
221 | default: |
222 | return SR_ERR_NA; | |
223 | } | |
224 | ||
6513f97f | 225 | return SR_OK; |
3877dde4 BV |
226 | } |
227 | ||
584560f1 | 228 | static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi, |
53b4680f | 229 | const struct sr_channel_group *cg) |
3877dde4 | 230 | { |
6513f97f | 231 | struct dev_context *devc; |
3877dde4 | 232 | int ret; |
6513f97f | 233 | const char *tmp_str; |
3877dde4 | 234 | |
53b4680f | 235 | (void)cg; |
d3c74a6f | 236 | |
3877dde4 BV |
237 | if (sdi->status != SR_ST_ACTIVE) |
238 | return SR_ERR_DEV_CLOSED; | |
239 | ||
6513f97f BV |
240 | if (!di->priv) { |
241 | sr_err("Driver was not initialized."); | |
242 | return SR_ERR; | |
243 | } | |
244 | ||
245 | devc = sdi->priv; | |
3877dde4 BV |
246 | ret = SR_OK; |
247 | switch (key) { | |
6513f97f BV |
248 | case SR_CONF_LIMIT_SAMPLES: |
249 | devc->limit_samples = g_variant_get_uint64(data); | |
250 | sr_dbg("Setting sample limit to %" PRIu64 ".", | |
251 | devc->limit_samples); | |
252 | break; | |
253 | case SR_CONF_DATA_SOURCE: | |
254 | tmp_str = g_variant_get_string(data, NULL); | |
255 | if (!strcmp(tmp_str, "Live")) | |
256 | devc->data_source = DATA_SOURCE_LIVE; | |
257 | else if (!strcmp(tmp_str, "Memory")) | |
258 | devc->data_source = DATA_SOURCE_MEMORY; | |
259 | else | |
260 | return SR_ERR; | |
261 | break; | |
3877dde4 BV |
262 | default: |
263 | ret = SR_ERR_NA; | |
264 | } | |
265 | ||
266 | return ret; | |
267 | } | |
268 | ||
584560f1 | 269 | static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, |
53b4680f | 270 | const struct sr_channel_group *cg) |
3877dde4 | 271 | { |
3877dde4 BV |
272 | |
273 | (void)sdi; | |
53b4680f | 274 | (void)cg; |
3877dde4 | 275 | |
3877dde4 | 276 | switch (key) { |
6513f97f | 277 | case SR_CONF_DEVICE_OPTIONS: |
584560f1 | 278 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, |
f254bc4b | 279 | devopts, ARRAY_SIZE(devopts), sizeof(uint32_t)); |
6513f97f BV |
280 | break; |
281 | case SR_CONF_DATA_SOURCE: | |
282 | *data = g_variant_new_strv(data_sources, ARRAY_SIZE(data_sources)); | |
283 | break; | |
3877dde4 BV |
284 | default: |
285 | return SR_ERR_NA; | |
286 | } | |
287 | ||
6513f97f | 288 | return SR_OK; |
3877dde4 BV |
289 | } |
290 | ||
291 | static int dev_acquisition_start(const struct sr_dev_inst *sdi, | |
292 | void *cb_data) | |
293 | { | |
6513f97f BV |
294 | struct drv_context *drvc; |
295 | struct dev_context *devc; | |
296 | struct sr_usb_dev_inst *usb; | |
6c60facc | 297 | int len, ret; |
6513f97f | 298 | unsigned char cmd[2]; |
3877dde4 BV |
299 | |
300 | if (sdi->status != SR_ST_ACTIVE) | |
301 | return SR_ERR_DEV_CLOSED; | |
302 | ||
6513f97f BV |
303 | drvc = di->priv; |
304 | devc = sdi->priv; | |
305 | usb = sdi->conn; | |
306 | ||
307 | devc->cb_data = cb_data; | |
308 | devc->num_samples = 0; | |
d6ff054a BV |
309 | devc->packet_len = 0; |
310 | ||
311 | /* Configure serial port parameters on USB-UART interface | |
312 | * chip inside the device (just baudrate 2400 actually). */ | |
313 | cmd[0] = 0x09; | |
314 | cmd[1] = 0x60; | |
315 | ret = libusb_control_transfer(usb->devhdl, 0x21, 0x09, 0x0300, 0x00, | |
316 | cmd, 2, 5); | |
317 | if (ret != 2) { | |
318 | sr_dbg("Failed to configure CH9325: %s", libusb_error_name(ret)); | |
319 | return SR_ERR; | |
320 | } | |
6513f97f BV |
321 | |
322 | /* Send header packet to the session bus. */ | |
323 | std_session_send_df_header(cb_data, LOG_PREFIX); | |
324 | ||
325 | if (!(devc->xfer = libusb_alloc_transfer(0))) | |
326 | return SR_ERR; | |
327 | ||
6513f97f BV |
328 | /* Length of payload to follow. */ |
329 | cmd[0] = 0x01; | |
330 | if (devc->data_source == DATA_SOURCE_LIVE) | |
331 | cmd[1] = CMD_GET_LIVE; | |
332 | else | |
333 | cmd[1] = CMD_GET_STORED; | |
334 | ||
335 | ret = libusb_bulk_transfer(usb->devhdl, EP_OUT, cmd, 2, &len, 5); | |
336 | if (ret != 0 || len != 2) { | |
337 | sr_dbg("Failed to start acquisition: %s", libusb_error_name(ret)); | |
338 | libusb_free_transfer(devc->xfer); | |
339 | return SR_ERR; | |
340 | } | |
341 | ||
342 | libusb_fill_bulk_transfer(devc->xfer, usb->devhdl, EP_IN, devc->buf, | |
d6ff054a | 343 | 8, uni_t_ut32x_receive_transfer, (void *)sdi, 15); |
6513f97f BV |
344 | if (libusb_submit_transfer(devc->xfer) != 0) { |
345 | libusb_free_transfer(devc->xfer); | |
346 | return SR_ERR; | |
347 | } | |
3877dde4 | 348 | |
102f1239 BV |
349 | usb_source_add(sdi->session, drvc->sr_ctx, 10, |
350 | uni_t_ut32x_handle_events, (void *)sdi); | |
d6ff054a | 351 | |
3877dde4 BV |
352 | return SR_OK; |
353 | } | |
354 | ||
355 | static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) | |
356 | { | |
d6ff054a | 357 | |
3877dde4 BV |
358 | (void)cb_data; |
359 | ||
360 | if (sdi->status != SR_ST_ACTIVE) | |
361 | return SR_ERR_DEV_CLOSED; | |
362 | ||
d6ff054a BV |
363 | /* Signal USB transfer handler to clean up and stop. */ |
364 | sdi->status = SR_ST_STOPPING; | |
3877dde4 BV |
365 | |
366 | return SR_OK; | |
367 | } | |
368 | ||
369 | SR_PRIV struct sr_dev_driver uni_t_ut32x_driver_info = { | |
370 | .name = "uni-t-ut32x", | |
371 | .longname = "UNI-T UT32x", | |
372 | .api_version = 1, | |
373 | .init = init, | |
374 | .cleanup = cleanup, | |
375 | .scan = scan, | |
376 | .dev_list = dev_list, | |
a6630742 | 377 | .dev_clear = NULL, |
3877dde4 BV |
378 | .config_get = config_get, |
379 | .config_set = config_set, | |
380 | .config_list = config_list, | |
381 | .dev_open = dev_open, | |
382 | .dev_close = dev_close, | |
383 | .dev_acquisition_start = dev_acquisition_start, | |
384 | .dev_acquisition_stop = dev_acquisition_stop, | |
385 | .priv = NULL, | |
386 | }; |