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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 | ||
3877dde4 BV |
101 | static int dev_open(struct sr_dev_inst *sdi) |
102 | { | |
4f840ce9 | 103 | struct sr_dev_driver *di = sdi->driver; |
efa98402 | 104 | struct drv_context *drvc = di->context; |
6513f97f BV |
105 | struct sr_usb_dev_inst *usb; |
106 | int ret; | |
107 | ||
6513f97f BV |
108 | usb = sdi->conn; |
109 | ||
110 | if (sr_usb_open(drvc->sr_ctx->libusb_ctx, usb) != SR_OK) | |
111 | return SR_ERR; | |
112 | ||
113 | /* | |
f3f19d11 | 114 | * The libusb 1.0.9 Darwin backend is broken: it can report a kernel |
6513f97f BV |
115 | * driver being active, but detaching it always returns an error. |
116 | */ | |
117 | #if !defined(__APPLE__) | |
d6ff054a BV |
118 | if (libusb_kernel_driver_active(usb->devhdl, USB_INTERFACE) == 1) { |
119 | if ((ret = libusb_detach_kernel_driver(usb->devhdl, USB_INTERFACE)) < 0) { | |
6513f97f BV |
120 | sr_err("failed to detach kernel driver: %s", |
121 | libusb_error_name(ret)); | |
122 | return SR_ERR; | |
123 | } | |
124 | } | |
125 | #endif | |
3877dde4 | 126 | |
d6ff054a | 127 | if ((ret = libusb_set_configuration(usb->devhdl, USB_CONFIGURATION))) { |
6513f97f BV |
128 | sr_err("Failed to set configuration: %s.", libusb_error_name(ret)); |
129 | return SR_ERR; | |
130 | } | |
3877dde4 | 131 | |
6513f97f BV |
132 | if ((ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE))) { |
133 | sr_err("Failed to claim interface: %s.", libusb_error_name(ret)); | |
134 | return SR_ERR; | |
135 | } | |
3877dde4 BV |
136 | sdi->status = SR_ST_ACTIVE; |
137 | ||
6513f97f | 138 | return ret; |
3877dde4 BV |
139 | } |
140 | ||
141 | static int dev_close(struct sr_dev_inst *sdi) | |
142 | { | |
6513f97f | 143 | struct sr_usb_dev_inst *usb; |
3877dde4 | 144 | |
6513f97f BV |
145 | usb = sdi->conn; |
146 | if (!usb->devhdl) | |
147 | /* Nothing to do. */ | |
148 | return SR_OK; | |
3877dde4 | 149 | |
6513f97f BV |
150 | libusb_release_interface(usb->devhdl, USB_INTERFACE); |
151 | libusb_close(usb->devhdl); | |
152 | usb->devhdl = NULL; | |
3877dde4 BV |
153 | sdi->status = SR_ST_INACTIVE; |
154 | ||
155 | return SR_OK; | |
156 | } | |
157 | ||
584560f1 | 158 | static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, |
53b4680f | 159 | const struct sr_channel_group *cg) |
3877dde4 | 160 | { |
6513f97f | 161 | struct dev_context *devc; |
3877dde4 | 162 | |
53b4680f | 163 | (void)cg; |
d3c74a6f | 164 | |
6513f97f | 165 | devc = sdi->priv; |
3877dde4 | 166 | switch (key) { |
6513f97f BV |
167 | case SR_CONF_LIMIT_SAMPLES: |
168 | *data = g_variant_new_uint64(devc->limit_samples); | |
169 | break; | |
170 | case SR_CONF_DATA_SOURCE: | |
171 | if (devc->data_source == DATA_SOURCE_LIVE) | |
172 | *data = g_variant_new_string("Live"); | |
173 | else | |
174 | *data = g_variant_new_string("Memory"); | |
175 | break; | |
3877dde4 BV |
176 | default: |
177 | return SR_ERR_NA; | |
178 | } | |
179 | ||
6513f97f | 180 | return SR_OK; |
3877dde4 BV |
181 | } |
182 | ||
584560f1 | 183 | static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi, |
53b4680f | 184 | const struct sr_channel_group *cg) |
3877dde4 | 185 | { |
6513f97f | 186 | struct dev_context *devc; |
6513f97f | 187 | const char *tmp_str; |
3877dde4 | 188 | |
53b4680f | 189 | (void)cg; |
d3c74a6f | 190 | |
3877dde4 BV |
191 | if (sdi->status != SR_ST_ACTIVE) |
192 | return SR_ERR_DEV_CLOSED; | |
193 | ||
6513f97f | 194 | devc = sdi->priv; |
dcd438ee | 195 | |
3877dde4 | 196 | switch (key) { |
6513f97f BV |
197 | case SR_CONF_LIMIT_SAMPLES: |
198 | devc->limit_samples = g_variant_get_uint64(data); | |
6513f97f BV |
199 | break; |
200 | case SR_CONF_DATA_SOURCE: | |
201 | tmp_str = g_variant_get_string(data, NULL); | |
202 | if (!strcmp(tmp_str, "Live")) | |
203 | devc->data_source = DATA_SOURCE_LIVE; | |
204 | else if (!strcmp(tmp_str, "Memory")) | |
205 | devc->data_source = DATA_SOURCE_MEMORY; | |
206 | else | |
207 | return SR_ERR; | |
208 | break; | |
3877dde4 | 209 | default: |
dcd438ee | 210 | return SR_ERR_NA; |
3877dde4 BV |
211 | } |
212 | ||
dcd438ee | 213 | return SR_OK; |
3877dde4 BV |
214 | } |
215 | ||
584560f1 | 216 | static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, |
53b4680f | 217 | const struct sr_channel_group *cg) |
3877dde4 | 218 | { |
3877dde4 | 219 | (void)sdi; |
53b4680f | 220 | (void)cg; |
3877dde4 | 221 | |
3877dde4 | 222 | switch (key) { |
6513f97f | 223 | case SR_CONF_DEVICE_OPTIONS: |
584560f1 | 224 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, |
f254bc4b | 225 | devopts, ARRAY_SIZE(devopts), sizeof(uint32_t)); |
6513f97f BV |
226 | break; |
227 | case SR_CONF_DATA_SOURCE: | |
228 | *data = g_variant_new_strv(data_sources, ARRAY_SIZE(data_sources)); | |
229 | break; | |
3877dde4 BV |
230 | default: |
231 | return SR_ERR_NA; | |
232 | } | |
233 | ||
6513f97f | 234 | return SR_OK; |
3877dde4 BV |
235 | } |
236 | ||
695dc859 | 237 | static int dev_acquisition_start(const struct sr_dev_inst *sdi) |
3877dde4 | 238 | { |
4f840ce9 | 239 | struct sr_dev_driver *di = sdi->driver; |
6513f97f BV |
240 | struct drv_context *drvc; |
241 | struct dev_context *devc; | |
242 | struct sr_usb_dev_inst *usb; | |
6c60facc | 243 | int len, ret; |
6513f97f | 244 | unsigned char cmd[2]; |
3877dde4 BV |
245 | |
246 | if (sdi->status != SR_ST_ACTIVE) | |
247 | return SR_ERR_DEV_CLOSED; | |
248 | ||
41812aca | 249 | drvc = di->context; |
6513f97f BV |
250 | devc = sdi->priv; |
251 | usb = sdi->conn; | |
252 | ||
6513f97f | 253 | devc->num_samples = 0; |
d6ff054a BV |
254 | devc->packet_len = 0; |
255 | ||
256 | /* Configure serial port parameters on USB-UART interface | |
257 | * chip inside the device (just baudrate 2400 actually). */ | |
258 | cmd[0] = 0x09; | |
259 | cmd[1] = 0x60; | |
260 | ret = libusb_control_transfer(usb->devhdl, 0x21, 0x09, 0x0300, 0x00, | |
261 | cmd, 2, 5); | |
262 | if (ret != 2) { | |
263 | sr_dbg("Failed to configure CH9325: %s", libusb_error_name(ret)); | |
264 | return SR_ERR; | |
265 | } | |
6513f97f | 266 | |
695dc859 | 267 | std_session_send_df_header(sdi, LOG_PREFIX); |
6513f97f BV |
268 | |
269 | if (!(devc->xfer = libusb_alloc_transfer(0))) | |
270 | return SR_ERR; | |
271 | ||
6513f97f BV |
272 | /* Length of payload to follow. */ |
273 | cmd[0] = 0x01; | |
274 | if (devc->data_source == DATA_SOURCE_LIVE) | |
275 | cmd[1] = CMD_GET_LIVE; | |
276 | else | |
277 | cmd[1] = CMD_GET_STORED; | |
278 | ||
279 | ret = libusb_bulk_transfer(usb->devhdl, EP_OUT, cmd, 2, &len, 5); | |
280 | if (ret != 0 || len != 2) { | |
281 | sr_dbg("Failed to start acquisition: %s", libusb_error_name(ret)); | |
282 | libusb_free_transfer(devc->xfer); | |
283 | return SR_ERR; | |
284 | } | |
285 | ||
286 | libusb_fill_bulk_transfer(devc->xfer, usb->devhdl, EP_IN, devc->buf, | |
d6ff054a | 287 | 8, uni_t_ut32x_receive_transfer, (void *)sdi, 15); |
6513f97f BV |
288 | if (libusb_submit_transfer(devc->xfer) != 0) { |
289 | libusb_free_transfer(devc->xfer); | |
290 | return SR_ERR; | |
291 | } | |
3877dde4 | 292 | |
102f1239 BV |
293 | usb_source_add(sdi->session, drvc->sr_ctx, 10, |
294 | uni_t_ut32x_handle_events, (void *)sdi); | |
d6ff054a | 295 | |
3877dde4 BV |
296 | return SR_OK; |
297 | } | |
298 | ||
695dc859 | 299 | static int dev_acquisition_stop(struct sr_dev_inst *sdi) |
3877dde4 | 300 | { |
3877dde4 BV |
301 | if (sdi->status != SR_ST_ACTIVE) |
302 | return SR_ERR_DEV_CLOSED; | |
303 | ||
d6ff054a BV |
304 | /* Signal USB transfer handler to clean up and stop. */ |
305 | sdi->status = SR_ST_STOPPING; | |
3877dde4 BV |
306 | |
307 | return SR_OK; | |
308 | } | |
309 | ||
310 | SR_PRIV struct sr_dev_driver uni_t_ut32x_driver_info = { | |
311 | .name = "uni-t-ut32x", | |
312 | .longname = "UNI-T UT32x", | |
313 | .api_version = 1, | |
314 | .init = init, | |
700d6b64 | 315 | .cleanup = std_cleanup, |
3877dde4 | 316 | .scan = scan, |
c01bf34c | 317 | .dev_list = std_dev_list, |
a6630742 | 318 | .dev_clear = NULL, |
3877dde4 BV |
319 | .config_get = config_get, |
320 | .config_set = config_set, | |
321 | .config_list = config_list, | |
322 | .dev_open = dev_open, | |
323 | .dev_close = dev_close, | |
324 | .dev_acquisition_start = dev_acquisition_start, | |
325 | .dev_acquisition_stop = dev_acquisition_stop, | |
41812aca | 326 | .context = NULL, |
3877dde4 | 327 | }; |