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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 | ||
6513f97f BV |
24 | static const int32_t hwcaps[] = { |
25 | SR_CONF_THERMOMETER, | |
26 | SR_CONF_LIMIT_SAMPLES, | |
27 | SR_CONF_CONTINUOUS, | |
28 | SR_CONF_DATA_SOURCE, | |
29 | }; | |
30 | ||
31 | static char *probes[] = { | |
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; | |
56 | struct sr_probe *probe; | |
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; | |
78 | if ((usb_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, USB_CONN))) { | |
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) { | |
82 | if (!(sdi = sr_dev_inst_new(0, SR_ST_INACTIVE, VENDOR, | |
83 | MODEL, NULL))) | |
84 | return NULL; | |
85 | sdi->driver = di; | |
86 | sdi->inst_type = SR_INST_USB; | |
87 | sdi->conn = l->data; | |
88 | for (i = 0; i < 3; i++) { | |
89 | if (!(probe = sr_probe_new(i, SR_PROBE_ANALOG, TRUE, | |
90 | probes[i]))) { | |
91 | sr_dbg("Probe malloc failed."); | |
92 | return NULL; | |
93 | } | |
94 | sdi->probes = g_slist_append(sdi->probes, probe); | |
95 | } | |
96 | ||
97 | if (!(devc = g_try_malloc(sizeof(struct dev_context)))) { | |
98 | sr_dbg("Device context malloc failed."); | |
99 | return NULL; | |
100 | } | |
101 | sdi->priv = devc; | |
102 | devc->limit_samples = 0; | |
103 | devc->data_source = DEFAULT_DATA_SOURCE; | |
104 | drvc->instances = g_slist_append(drvc->instances, sdi); | |
105 | devices = g_slist_append(devices, sdi); | |
106 | } | |
107 | g_slist_free(usb_devices); | |
108 | } else | |
109 | g_slist_free_full(usb_devices, g_free); | |
3877dde4 BV |
110 | |
111 | return devices; | |
112 | } | |
113 | ||
114 | static GSList *dev_list(void) | |
115 | { | |
45c0841b | 116 | return ((struct drv_context *)(di->priv))->instances; |
3877dde4 BV |
117 | } |
118 | ||
119 | static int dev_clear(void) | |
120 | { | |
121 | return std_dev_clear(di, NULL); | |
122 | } | |
123 | ||
124 | static int dev_open(struct sr_dev_inst *sdi) | |
125 | { | |
6513f97f BV |
126 | struct drv_context *drvc; |
127 | struct sr_usb_dev_inst *usb; | |
128 | int ret; | |
129 | ||
130 | if (!(drvc = di->priv)) { | |
131 | sr_err("Driver was not initialized."); | |
132 | return SR_ERR; | |
133 | } | |
134 | ||
135 | usb = sdi->conn; | |
136 | ||
137 | if (sr_usb_open(drvc->sr_ctx->libusb_ctx, usb) != SR_OK) | |
138 | return SR_ERR; | |
139 | ||
140 | /* | |
141 | * The libusbx 1.0.9 darwin backend is broken: it can report a kernel | |
142 | * driver being active, but detaching it always returns an error. | |
143 | */ | |
144 | #if !defined(__APPLE__) | |
d6ff054a BV |
145 | if (libusb_kernel_driver_active(usb->devhdl, USB_INTERFACE) == 1) { |
146 | if ((ret = libusb_detach_kernel_driver(usb->devhdl, USB_INTERFACE)) < 0) { | |
6513f97f BV |
147 | sr_err("failed to detach kernel driver: %s", |
148 | libusb_error_name(ret)); | |
149 | return SR_ERR; | |
150 | } | |
151 | } | |
152 | #endif | |
3877dde4 | 153 | |
d6ff054a | 154 | if ((ret = libusb_set_configuration(usb->devhdl, USB_CONFIGURATION))) { |
6513f97f BV |
155 | sr_err("Failed to set configuration: %s.", libusb_error_name(ret)); |
156 | return SR_ERR; | |
157 | } | |
3877dde4 | 158 | |
6513f97f BV |
159 | if ((ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE))) { |
160 | sr_err("Failed to claim interface: %s.", libusb_error_name(ret)); | |
161 | return SR_ERR; | |
162 | } | |
3877dde4 BV |
163 | sdi->status = SR_ST_ACTIVE; |
164 | ||
6513f97f | 165 | return ret; |
3877dde4 BV |
166 | } |
167 | ||
168 | static int dev_close(struct sr_dev_inst *sdi) | |
169 | { | |
6513f97f | 170 | struct sr_usb_dev_inst *usb; |
3877dde4 | 171 | |
6513f97f BV |
172 | if (!di->priv) { |
173 | sr_err("Driver was not initialized."); | |
174 | return SR_ERR; | |
175 | } | |
176 | ||
177 | usb = sdi->conn; | |
178 | if (!usb->devhdl) | |
179 | /* Nothing to do. */ | |
180 | return SR_OK; | |
3877dde4 | 181 | |
6513f97f BV |
182 | libusb_release_interface(usb->devhdl, USB_INTERFACE); |
183 | libusb_close(usb->devhdl); | |
184 | usb->devhdl = NULL; | |
3877dde4 BV |
185 | sdi->status = SR_ST_INACTIVE; |
186 | ||
187 | return SR_OK; | |
188 | } | |
189 | ||
190 | static int cleanup(void) | |
191 | { | |
6513f97f BV |
192 | int ret; |
193 | struct drv_context *drvc; | |
3877dde4 | 194 | |
6513f97f BV |
195 | if (!(drvc = di->priv)) |
196 | /* Can get called on an unused driver, doesn't matter. */ | |
197 | return SR_OK; | |
3877dde4 | 198 | |
6513f97f BV |
199 | ret = dev_clear(); |
200 | g_free(drvc); | |
201 | di->priv = NULL; | |
202 | ||
203 | return ret; | |
3877dde4 BV |
204 | } |
205 | ||
d3c74a6f BV |
206 | static int config_get(int key, GVariant **data, const struct sr_dev_inst *sdi, |
207 | const struct sr_probe_group *probe_group) | |
3877dde4 | 208 | { |
6513f97f | 209 | struct dev_context *devc; |
3877dde4 | 210 | |
d3c74a6f BV |
211 | (void)probe_group; |
212 | ||
6513f97f | 213 | devc = sdi->priv; |
3877dde4 | 214 | switch (key) { |
6513f97f BV |
215 | case SR_CONF_LIMIT_SAMPLES: |
216 | *data = g_variant_new_uint64(devc->limit_samples); | |
217 | break; | |
218 | case SR_CONF_DATA_SOURCE: | |
219 | if (devc->data_source == DATA_SOURCE_LIVE) | |
220 | *data = g_variant_new_string("Live"); | |
221 | else | |
222 | *data = g_variant_new_string("Memory"); | |
223 | break; | |
3877dde4 BV |
224 | default: |
225 | return SR_ERR_NA; | |
226 | } | |
227 | ||
6513f97f | 228 | return SR_OK; |
3877dde4 BV |
229 | } |
230 | ||
d3c74a6f BV |
231 | static int config_set(int key, GVariant *data, const struct sr_dev_inst *sdi, |
232 | const struct sr_probe_group *probe_group) | |
3877dde4 | 233 | { |
6513f97f | 234 | struct dev_context *devc; |
3877dde4 | 235 | int ret; |
6513f97f | 236 | const char *tmp_str; |
3877dde4 | 237 | |
d3c74a6f BV |
238 | (void)probe_group; |
239 | ||
3877dde4 BV |
240 | if (sdi->status != SR_ST_ACTIVE) |
241 | return SR_ERR_DEV_CLOSED; | |
242 | ||
6513f97f BV |
243 | if (!di->priv) { |
244 | sr_err("Driver was not initialized."); | |
245 | return SR_ERR; | |
246 | } | |
247 | ||
248 | devc = sdi->priv; | |
3877dde4 BV |
249 | ret = SR_OK; |
250 | switch (key) { | |
6513f97f BV |
251 | case SR_CONF_LIMIT_SAMPLES: |
252 | devc->limit_samples = g_variant_get_uint64(data); | |
253 | sr_dbg("Setting sample limit to %" PRIu64 ".", | |
254 | devc->limit_samples); | |
255 | break; | |
256 | case SR_CONF_DATA_SOURCE: | |
257 | tmp_str = g_variant_get_string(data, NULL); | |
258 | if (!strcmp(tmp_str, "Live")) | |
259 | devc->data_source = DATA_SOURCE_LIVE; | |
260 | else if (!strcmp(tmp_str, "Memory")) | |
261 | devc->data_source = DATA_SOURCE_MEMORY; | |
262 | else | |
263 | return SR_ERR; | |
264 | break; | |
3877dde4 BV |
265 | default: |
266 | ret = SR_ERR_NA; | |
267 | } | |
268 | ||
269 | return ret; | |
270 | } | |
271 | ||
d3c74a6f BV |
272 | static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi, |
273 | const struct sr_probe_group *probe_group) | |
3877dde4 | 274 | { |
3877dde4 BV |
275 | |
276 | (void)sdi; | |
d3c74a6f | 277 | (void)probe_group; |
3877dde4 | 278 | |
3877dde4 | 279 | switch (key) { |
6513f97f BV |
280 | case SR_CONF_DEVICE_OPTIONS: |
281 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, | |
282 | hwcaps, ARRAY_SIZE(hwcaps), sizeof(int32_t)); | |
283 | break; | |
284 | case SR_CONF_DATA_SOURCE: | |
285 | *data = g_variant_new_strv(data_sources, ARRAY_SIZE(data_sources)); | |
286 | break; | |
3877dde4 BV |
287 | default: |
288 | return SR_ERR_NA; | |
289 | } | |
290 | ||
6513f97f | 291 | return SR_OK; |
3877dde4 BV |
292 | } |
293 | ||
294 | static int dev_acquisition_start(const struct sr_dev_inst *sdi, | |
295 | void *cb_data) | |
296 | { | |
6513f97f BV |
297 | struct drv_context *drvc; |
298 | struct dev_context *devc; | |
299 | struct sr_usb_dev_inst *usb; | |
6c60facc | 300 | int len, ret; |
6513f97f | 301 | unsigned char cmd[2]; |
3877dde4 BV |
302 | |
303 | if (sdi->status != SR_ST_ACTIVE) | |
304 | return SR_ERR_DEV_CLOSED; | |
305 | ||
6513f97f BV |
306 | drvc = di->priv; |
307 | devc = sdi->priv; | |
308 | usb = sdi->conn; | |
309 | ||
310 | devc->cb_data = cb_data; | |
311 | devc->num_samples = 0; | |
d6ff054a BV |
312 | devc->packet_len = 0; |
313 | ||
314 | /* Configure serial port parameters on USB-UART interface | |
315 | * chip inside the device (just baudrate 2400 actually). */ | |
316 | cmd[0] = 0x09; | |
317 | cmd[1] = 0x60; | |
318 | ret = libusb_control_transfer(usb->devhdl, 0x21, 0x09, 0x0300, 0x00, | |
319 | cmd, 2, 5); | |
320 | if (ret != 2) { | |
321 | sr_dbg("Failed to configure CH9325: %s", libusb_error_name(ret)); | |
322 | return SR_ERR; | |
323 | } | |
6513f97f BV |
324 | |
325 | /* Send header packet to the session bus. */ | |
326 | std_session_send_df_header(cb_data, LOG_PREFIX); | |
327 | ||
328 | if (!(devc->xfer = libusb_alloc_transfer(0))) | |
329 | return SR_ERR; | |
330 | ||
6513f97f BV |
331 | /* Length of payload to follow. */ |
332 | cmd[0] = 0x01; | |
333 | if (devc->data_source == DATA_SOURCE_LIVE) | |
334 | cmd[1] = CMD_GET_LIVE; | |
335 | else | |
336 | cmd[1] = CMD_GET_STORED; | |
337 | ||
338 | ret = libusb_bulk_transfer(usb->devhdl, EP_OUT, cmd, 2, &len, 5); | |
339 | if (ret != 0 || len != 2) { | |
340 | sr_dbg("Failed to start acquisition: %s", libusb_error_name(ret)); | |
341 | libusb_free_transfer(devc->xfer); | |
342 | return SR_ERR; | |
343 | } | |
344 | ||
345 | libusb_fill_bulk_transfer(devc->xfer, usb->devhdl, EP_IN, devc->buf, | |
d6ff054a | 346 | 8, uni_t_ut32x_receive_transfer, (void *)sdi, 15); |
6513f97f BV |
347 | if (libusb_submit_transfer(devc->xfer) != 0) { |
348 | libusb_free_transfer(devc->xfer); | |
349 | return SR_ERR; | |
350 | } | |
3877dde4 | 351 | |
6c60facc | 352 | usb_source_add(drvc->sr_ctx, 10, uni_t_ut32x_handle_events, (void *)sdi); |
d6ff054a | 353 | |
3877dde4 BV |
354 | return SR_OK; |
355 | } | |
356 | ||
357 | static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) | |
358 | { | |
d6ff054a | 359 | |
3877dde4 BV |
360 | (void)cb_data; |
361 | ||
362 | if (sdi->status != SR_ST_ACTIVE) | |
363 | return SR_ERR_DEV_CLOSED; | |
364 | ||
d6ff054a BV |
365 | /* Signal USB transfer handler to clean up and stop. */ |
366 | sdi->status = SR_ST_STOPPING; | |
3877dde4 BV |
367 | |
368 | return SR_OK; | |
369 | } | |
370 | ||
371 | SR_PRIV struct sr_dev_driver uni_t_ut32x_driver_info = { | |
372 | .name = "uni-t-ut32x", | |
373 | .longname = "UNI-T UT32x", | |
374 | .api_version = 1, | |
375 | .init = init, | |
376 | .cleanup = cleanup, | |
377 | .scan = scan, | |
378 | .dev_list = dev_list, | |
379 | .dev_clear = dev_clear, | |
380 | .config_get = config_get, | |
381 | .config_set = config_set, | |
382 | .config_list = config_list, | |
383 | .dev_open = dev_open, | |
384 | .dev_close = dev_close, | |
385 | .dev_acquisition_start = dev_acquisition_start, | |
386 | .dev_acquisition_stop = dev_acquisition_stop, | |
387 | .priv = NULL, | |
388 | }; |