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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 | ||
4f840ce9 | 40 | static GSList *scan(struct sr_dev_driver *di, GSList *options) |
3877dde4 BV |
41 | { |
42 | struct drv_context *drvc; | |
6513f97f BV |
43 | struct dev_context *devc; |
44 | struct sr_dev_inst *sdi; | |
6513f97f BV |
45 | struct sr_config *src; |
46 | GSList *usb_devices, *devices, *l; | |
07ffa5b3 | 47 | unsigned int i; |
6513f97f | 48 | const char *conn; |
3877dde4 | 49 | |
41812aca | 50 | drvc = di->context; |
3877dde4 | 51 | |
6513f97f BV |
52 | conn = NULL; |
53 | for (l = options; l; l = l->next) { | |
54 | src = l->data; | |
55 | switch (src->key) { | |
56 | case SR_CONF_CONN: | |
57 | conn = g_variant_get_string(src->data, NULL); | |
58 | break; | |
59 | } | |
60 | } | |
61 | if (!conn) | |
62 | return NULL; | |
63 | ||
64 | devices = NULL; | |
e196cb61 | 65 | if ((usb_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn))) { |
6513f97f BV |
66 | /* We have a list of sr_usb_dev_inst matching the connection |
67 | * string. Wrap them in sr_dev_inst and we're done. */ | |
68 | for (l = usb_devices; l; l = l->next) { | |
aac29cc1 | 69 | sdi = g_malloc0(sizeof(struct sr_dev_inst)); |
0af636be UH |
70 | sdi->status = SR_ST_INACTIVE; |
71 | sdi->vendor = g_strdup(VENDOR); | |
72 | sdi->model = g_strdup(MODEL); | |
6513f97f BV |
73 | sdi->inst_type = SR_INST_USB; |
74 | sdi->conn = l->data; | |
07ffa5b3 | 75 | for (i = 0; i < ARRAY_SIZE(channel_names); i++) |
0f34cb47 UH |
76 | sr_channel_new(sdi, i, SR_CHANNEL_ANALOG, TRUE, |
77 | channel_names[i]); | |
f57d8ffe | 78 | devc = g_malloc0(sizeof(struct dev_context)); |
6513f97f BV |
79 | sdi->priv = devc; |
80 | devc->limit_samples = 0; | |
81 | devc->data_source = DEFAULT_DATA_SOURCE; | |
6513f97f BV |
82 | devices = g_slist_append(devices, sdi); |
83 | } | |
84 | g_slist_free(usb_devices); | |
85 | } else | |
86 | g_slist_free_full(usb_devices, g_free); | |
3877dde4 | 87 | |
15a5bfe4 | 88 | return std_scan_complete(di, devices); |
3877dde4 BV |
89 | } |
90 | ||
3877dde4 BV |
91 | static int dev_open(struct sr_dev_inst *sdi) |
92 | { | |
4f840ce9 | 93 | struct sr_dev_driver *di = sdi->driver; |
efa98402 | 94 | struct drv_context *drvc = di->context; |
6513f97f BV |
95 | struct sr_usb_dev_inst *usb; |
96 | int ret; | |
97 | ||
6513f97f BV |
98 | usb = sdi->conn; |
99 | ||
100 | if (sr_usb_open(drvc->sr_ctx->libusb_ctx, usb) != SR_OK) | |
101 | return SR_ERR; | |
102 | ||
103 | /* | |
f3f19d11 | 104 | * The libusb 1.0.9 Darwin backend is broken: it can report a kernel |
6513f97f BV |
105 | * driver being active, but detaching it always returns an error. |
106 | */ | |
107 | #if !defined(__APPLE__) | |
d6ff054a BV |
108 | if (libusb_kernel_driver_active(usb->devhdl, USB_INTERFACE) == 1) { |
109 | if ((ret = libusb_detach_kernel_driver(usb->devhdl, USB_INTERFACE)) < 0) { | |
6513f97f BV |
110 | sr_err("failed to detach kernel driver: %s", |
111 | libusb_error_name(ret)); | |
112 | return SR_ERR; | |
113 | } | |
114 | } | |
115 | #endif | |
3877dde4 | 116 | |
d6ff054a | 117 | if ((ret = libusb_set_configuration(usb->devhdl, USB_CONFIGURATION))) { |
6513f97f BV |
118 | sr_err("Failed to set configuration: %s.", libusb_error_name(ret)); |
119 | return SR_ERR; | |
120 | } | |
3877dde4 | 121 | |
6513f97f BV |
122 | if ((ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE))) { |
123 | sr_err("Failed to claim interface: %s.", libusb_error_name(ret)); | |
124 | return SR_ERR; | |
125 | } | |
3877dde4 BV |
126 | sdi->status = SR_ST_ACTIVE; |
127 | ||
6513f97f | 128 | return ret; |
3877dde4 BV |
129 | } |
130 | ||
131 | static int dev_close(struct sr_dev_inst *sdi) | |
132 | { | |
6513f97f | 133 | struct sr_usb_dev_inst *usb; |
3877dde4 | 134 | |
6513f97f BV |
135 | usb = sdi->conn; |
136 | if (!usb->devhdl) | |
137 | /* Nothing to do. */ | |
138 | return SR_OK; | |
3877dde4 | 139 | |
6513f97f BV |
140 | libusb_release_interface(usb->devhdl, USB_INTERFACE); |
141 | libusb_close(usb->devhdl); | |
142 | usb->devhdl = NULL; | |
3877dde4 BV |
143 | sdi->status = SR_ST_INACTIVE; |
144 | ||
145 | return SR_OK; | |
146 | } | |
147 | ||
584560f1 | 148 | static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, |
53b4680f | 149 | const struct sr_channel_group *cg) |
3877dde4 | 150 | { |
6513f97f | 151 | struct dev_context *devc; |
3877dde4 | 152 | |
53b4680f | 153 | (void)cg; |
d3c74a6f | 154 | |
6513f97f | 155 | devc = sdi->priv; |
3877dde4 | 156 | switch (key) { |
6513f97f BV |
157 | case SR_CONF_LIMIT_SAMPLES: |
158 | *data = g_variant_new_uint64(devc->limit_samples); | |
159 | break; | |
160 | case SR_CONF_DATA_SOURCE: | |
161 | if (devc->data_source == DATA_SOURCE_LIVE) | |
162 | *data = g_variant_new_string("Live"); | |
163 | else | |
164 | *data = g_variant_new_string("Memory"); | |
165 | break; | |
3877dde4 BV |
166 | default: |
167 | return SR_ERR_NA; | |
168 | } | |
169 | ||
6513f97f | 170 | return SR_OK; |
3877dde4 BV |
171 | } |
172 | ||
584560f1 | 173 | static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi, |
53b4680f | 174 | const struct sr_channel_group *cg) |
3877dde4 | 175 | { |
6513f97f | 176 | struct dev_context *devc; |
6513f97f | 177 | const char *tmp_str; |
3877dde4 | 178 | |
53b4680f | 179 | (void)cg; |
d3c74a6f | 180 | |
3877dde4 BV |
181 | if (sdi->status != SR_ST_ACTIVE) |
182 | return SR_ERR_DEV_CLOSED; | |
183 | ||
6513f97f | 184 | devc = sdi->priv; |
dcd438ee | 185 | |
3877dde4 | 186 | switch (key) { |
6513f97f BV |
187 | case SR_CONF_LIMIT_SAMPLES: |
188 | devc->limit_samples = g_variant_get_uint64(data); | |
6513f97f BV |
189 | break; |
190 | case SR_CONF_DATA_SOURCE: | |
191 | tmp_str = g_variant_get_string(data, NULL); | |
192 | if (!strcmp(tmp_str, "Live")) | |
193 | devc->data_source = DATA_SOURCE_LIVE; | |
194 | else if (!strcmp(tmp_str, "Memory")) | |
195 | devc->data_source = DATA_SOURCE_MEMORY; | |
196 | else | |
197 | return SR_ERR; | |
198 | break; | |
3877dde4 | 199 | default: |
dcd438ee | 200 | return SR_ERR_NA; |
3877dde4 BV |
201 | } |
202 | ||
dcd438ee | 203 | return SR_OK; |
3877dde4 BV |
204 | } |
205 | ||
584560f1 | 206 | static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, |
53b4680f | 207 | const struct sr_channel_group *cg) |
3877dde4 | 208 | { |
3877dde4 | 209 | (void)sdi; |
53b4680f | 210 | (void)cg; |
3877dde4 | 211 | |
3877dde4 | 212 | switch (key) { |
6513f97f | 213 | case SR_CONF_DEVICE_OPTIONS: |
584560f1 | 214 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, |
f254bc4b | 215 | devopts, ARRAY_SIZE(devopts), sizeof(uint32_t)); |
6513f97f BV |
216 | break; |
217 | case SR_CONF_DATA_SOURCE: | |
218 | *data = g_variant_new_strv(data_sources, ARRAY_SIZE(data_sources)); | |
219 | break; | |
3877dde4 BV |
220 | default: |
221 | return SR_ERR_NA; | |
222 | } | |
223 | ||
6513f97f | 224 | return SR_OK; |
3877dde4 BV |
225 | } |
226 | ||
695dc859 | 227 | static int dev_acquisition_start(const struct sr_dev_inst *sdi) |
3877dde4 | 228 | { |
4f840ce9 | 229 | struct sr_dev_driver *di = sdi->driver; |
6513f97f BV |
230 | struct drv_context *drvc; |
231 | struct dev_context *devc; | |
232 | struct sr_usb_dev_inst *usb; | |
6c60facc | 233 | int len, ret; |
6513f97f | 234 | unsigned char cmd[2]; |
3877dde4 BV |
235 | |
236 | if (sdi->status != SR_ST_ACTIVE) | |
237 | return SR_ERR_DEV_CLOSED; | |
238 | ||
41812aca | 239 | drvc = di->context; |
6513f97f BV |
240 | devc = sdi->priv; |
241 | usb = sdi->conn; | |
242 | ||
6513f97f | 243 | devc->num_samples = 0; |
d6ff054a BV |
244 | devc->packet_len = 0; |
245 | ||
246 | /* Configure serial port parameters on USB-UART interface | |
247 | * chip inside the device (just baudrate 2400 actually). */ | |
248 | cmd[0] = 0x09; | |
249 | cmd[1] = 0x60; | |
250 | ret = libusb_control_transfer(usb->devhdl, 0x21, 0x09, 0x0300, 0x00, | |
251 | cmd, 2, 5); | |
252 | if (ret != 2) { | |
253 | sr_dbg("Failed to configure CH9325: %s", libusb_error_name(ret)); | |
254 | return SR_ERR; | |
255 | } | |
6513f97f | 256 | |
bee2b016 | 257 | std_session_send_df_header(sdi); |
6513f97f BV |
258 | |
259 | if (!(devc->xfer = libusb_alloc_transfer(0))) | |
260 | return SR_ERR; | |
261 | ||
6513f97f BV |
262 | /* Length of payload to follow. */ |
263 | cmd[0] = 0x01; | |
264 | if (devc->data_source == DATA_SOURCE_LIVE) | |
265 | cmd[1] = CMD_GET_LIVE; | |
266 | else | |
267 | cmd[1] = CMD_GET_STORED; | |
268 | ||
269 | ret = libusb_bulk_transfer(usb->devhdl, EP_OUT, cmd, 2, &len, 5); | |
270 | if (ret != 0 || len != 2) { | |
271 | sr_dbg("Failed to start acquisition: %s", libusb_error_name(ret)); | |
272 | libusb_free_transfer(devc->xfer); | |
273 | return SR_ERR; | |
274 | } | |
275 | ||
276 | libusb_fill_bulk_transfer(devc->xfer, usb->devhdl, EP_IN, devc->buf, | |
d6ff054a | 277 | 8, uni_t_ut32x_receive_transfer, (void *)sdi, 15); |
6513f97f BV |
278 | if (libusb_submit_transfer(devc->xfer) != 0) { |
279 | libusb_free_transfer(devc->xfer); | |
280 | return SR_ERR; | |
281 | } | |
3877dde4 | 282 | |
102f1239 BV |
283 | usb_source_add(sdi->session, drvc->sr_ctx, 10, |
284 | uni_t_ut32x_handle_events, (void *)sdi); | |
d6ff054a | 285 | |
3877dde4 BV |
286 | return SR_OK; |
287 | } | |
288 | ||
695dc859 | 289 | static int dev_acquisition_stop(struct sr_dev_inst *sdi) |
3877dde4 | 290 | { |
3877dde4 BV |
291 | if (sdi->status != SR_ST_ACTIVE) |
292 | return SR_ERR_DEV_CLOSED; | |
293 | ||
d6ff054a BV |
294 | /* Signal USB transfer handler to clean up and stop. */ |
295 | sdi->status = SR_ST_STOPPING; | |
3877dde4 BV |
296 | |
297 | return SR_OK; | |
298 | } | |
299 | ||
dd5c48a6 | 300 | static struct sr_dev_driver uni_t_ut32x_driver_info = { |
3877dde4 BV |
301 | .name = "uni-t-ut32x", |
302 | .longname = "UNI-T UT32x", | |
303 | .api_version = 1, | |
c2fdcc25 | 304 | .init = std_init, |
700d6b64 | 305 | .cleanup = std_cleanup, |
3877dde4 | 306 | .scan = scan, |
c01bf34c | 307 | .dev_list = std_dev_list, |
a6630742 | 308 | .dev_clear = NULL, |
3877dde4 BV |
309 | .config_get = config_get, |
310 | .config_set = config_set, | |
311 | .config_list = config_list, | |
312 | .dev_open = dev_open, | |
313 | .dev_close = dev_close, | |
314 | .dev_acquisition_start = dev_acquisition_start, | |
315 | .dev_acquisition_stop = dev_acquisition_stop, | |
41812aca | 316 | .context = NULL, |
3877dde4 | 317 | }; |
dd5c48a6 | 318 | SR_REGISTER_DEV_DRIVER(uni_t_ut32x_driver_info); |