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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 <config.h> | |
21 | #include <string.h> | |
22 | #include "protocol.h" | |
23 | ||
24 | static const uint32_t scanopts[] = { | |
25 | SR_CONF_CONN, | |
26 | }; | |
27 | ||
28 | static const uint32_t devopts[] = { | |
29 | SR_CONF_THERMOMETER, | |
30 | SR_CONF_CONTINUOUS, | |
31 | SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET, | |
32 | SR_CONF_DATA_SOURCE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
33 | }; | |
34 | ||
35 | static const char *channel_names[] = { | |
36 | "T1", "T2", "T1-T2", | |
37 | }; | |
38 | ||
39 | static const char *data_sources[] = { | |
40 | "Live", | |
41 | "Memory", | |
42 | }; | |
43 | ||
44 | static GSList *scan(struct sr_dev_driver *di, GSList *options) | |
45 | { | |
46 | struct drv_context *drvc; | |
47 | struct dev_context *devc; | |
48 | struct sr_dev_inst *sdi; | |
49 | struct sr_config *src; | |
50 | GSList *usb_devices, *devices, *l; | |
51 | unsigned int i; | |
52 | const char *conn; | |
53 | ||
54 | drvc = di->context; | |
55 | ||
56 | conn = NULL; | |
57 | for (l = options; l; l = l->next) { | |
58 | src = l->data; | |
59 | switch (src->key) { | |
60 | case SR_CONF_CONN: | |
61 | conn = g_variant_get_string(src->data, NULL); | |
62 | break; | |
63 | } | |
64 | } | |
65 | if (!conn) | |
66 | return NULL; | |
67 | ||
68 | devices = NULL; | |
69 | if ((usb_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn))) { | |
70 | /* We have a list of sr_usb_dev_inst matching the connection | |
71 | * string. Wrap them in sr_dev_inst and we're done. */ | |
72 | for (l = usb_devices; l; l = l->next) { | |
73 | sdi = g_malloc0(sizeof(struct sr_dev_inst)); | |
74 | sdi->status = SR_ST_INACTIVE; | |
75 | sdi->vendor = g_strdup(VENDOR); | |
76 | sdi->model = g_strdup(MODEL); | |
77 | sdi->inst_type = SR_INST_USB; | |
78 | sdi->conn = l->data; | |
79 | for (i = 0; i < ARRAY_SIZE(channel_names); i++) | |
80 | sr_channel_new(sdi, i, SR_CHANNEL_ANALOG, TRUE, | |
81 | channel_names[i]); | |
82 | devc = g_malloc0(sizeof(struct dev_context)); | |
83 | sdi->priv = devc; | |
84 | devc->limit_samples = 0; | |
85 | devc->data_source = DEFAULT_DATA_SOURCE; | |
86 | devices = g_slist_append(devices, sdi); | |
87 | } | |
88 | g_slist_free(usb_devices); | |
89 | } else | |
90 | g_slist_free_full(usb_devices, g_free); | |
91 | ||
92 | return std_scan_complete(di, devices); | |
93 | } | |
94 | ||
95 | static int dev_open(struct sr_dev_inst *sdi) | |
96 | { | |
97 | struct sr_dev_driver *di = sdi->driver; | |
98 | struct drv_context *drvc = di->context; | |
99 | struct sr_usb_dev_inst *usb; | |
100 | int ret; | |
101 | ||
102 | usb = sdi->conn; | |
103 | ||
104 | if (sr_usb_open(drvc->sr_ctx->libusb_ctx, usb) != SR_OK) | |
105 | return SR_ERR; | |
106 | ||
107 | /* | |
108 | * The libusb 1.0.9 Darwin backend is broken: it can report a kernel | |
109 | * driver being active, but detaching it always returns an error. | |
110 | */ | |
111 | #if !defined(__APPLE__) | |
112 | if (libusb_kernel_driver_active(usb->devhdl, USB_INTERFACE) == 1) { | |
113 | if ((ret = libusb_detach_kernel_driver(usb->devhdl, USB_INTERFACE)) < 0) { | |
114 | sr_err("failed to detach kernel driver: %s", | |
115 | libusb_error_name(ret)); | |
116 | return SR_ERR; | |
117 | } | |
118 | } | |
119 | #endif | |
120 | ||
121 | if ((ret = libusb_set_configuration(usb->devhdl, USB_CONFIGURATION))) { | |
122 | sr_err("Failed to set configuration: %s.", libusb_error_name(ret)); | |
123 | return SR_ERR; | |
124 | } | |
125 | ||
126 | if ((ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE))) { | |
127 | sr_err("Failed to claim interface: %s.", libusb_error_name(ret)); | |
128 | return SR_ERR; | |
129 | } | |
130 | sdi->status = SR_ST_ACTIVE; | |
131 | ||
132 | return ret; | |
133 | } | |
134 | ||
135 | static int dev_close(struct sr_dev_inst *sdi) | |
136 | { | |
137 | struct sr_usb_dev_inst *usb; | |
138 | ||
139 | usb = sdi->conn; | |
140 | if (!usb->devhdl) | |
141 | /* Nothing to do. */ | |
142 | return SR_OK; | |
143 | ||
144 | libusb_release_interface(usb->devhdl, USB_INTERFACE); | |
145 | libusb_close(usb->devhdl); | |
146 | usb->devhdl = NULL; | |
147 | sdi->status = SR_ST_INACTIVE; | |
148 | ||
149 | return SR_OK; | |
150 | } | |
151 | ||
152 | static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, | |
153 | const struct sr_channel_group *cg) | |
154 | { | |
155 | struct dev_context *devc; | |
156 | ||
157 | (void)cg; | |
158 | ||
159 | devc = sdi->priv; | |
160 | switch (key) { | |
161 | case SR_CONF_LIMIT_SAMPLES: | |
162 | *data = g_variant_new_uint64(devc->limit_samples); | |
163 | break; | |
164 | case SR_CONF_DATA_SOURCE: | |
165 | if (devc->data_source == DATA_SOURCE_LIVE) | |
166 | *data = g_variant_new_string("Live"); | |
167 | else | |
168 | *data = g_variant_new_string("Memory"); | |
169 | break; | |
170 | default: | |
171 | return SR_ERR_NA; | |
172 | } | |
173 | ||
174 | return SR_OK; | |
175 | } | |
176 | ||
177 | static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi, | |
178 | const struct sr_channel_group *cg) | |
179 | { | |
180 | struct dev_context *devc; | |
181 | const char *tmp_str; | |
182 | ||
183 | (void)cg; | |
184 | ||
185 | if (sdi->status != SR_ST_ACTIVE) | |
186 | return SR_ERR_DEV_CLOSED; | |
187 | ||
188 | devc = sdi->priv; | |
189 | ||
190 | switch (key) { | |
191 | case SR_CONF_LIMIT_SAMPLES: | |
192 | devc->limit_samples = g_variant_get_uint64(data); | |
193 | break; | |
194 | case SR_CONF_DATA_SOURCE: | |
195 | tmp_str = g_variant_get_string(data, NULL); | |
196 | if (!strcmp(tmp_str, "Live")) | |
197 | devc->data_source = DATA_SOURCE_LIVE; | |
198 | else if (!strcmp(tmp_str, "Memory")) | |
199 | devc->data_source = DATA_SOURCE_MEMORY; | |
200 | else | |
201 | return SR_ERR; | |
202 | break; | |
203 | default: | |
204 | return SR_ERR_NA; | |
205 | } | |
206 | ||
207 | return SR_OK; | |
208 | } | |
209 | ||
210 | static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, | |
211 | const struct sr_channel_group *cg) | |
212 | { | |
213 | (void)sdi; | |
214 | (void)cg; | |
215 | ||
216 | switch (key) { | |
217 | case SR_CONF_SCAN_OPTIONS: | |
218 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
219 | scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t)); | |
220 | break; | |
221 | case SR_CONF_DEVICE_OPTIONS: | |
222 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
223 | devopts, ARRAY_SIZE(devopts), sizeof(uint32_t)); | |
224 | break; | |
225 | case SR_CONF_DATA_SOURCE: | |
226 | *data = g_variant_new_strv(data_sources, ARRAY_SIZE(data_sources)); | |
227 | break; | |
228 | default: | |
229 | return SR_ERR_NA; | |
230 | } | |
231 | ||
232 | return SR_OK; | |
233 | } | |
234 | ||
235 | static int dev_acquisition_start(const struct sr_dev_inst *sdi) | |
236 | { | |
237 | struct sr_dev_driver *di = sdi->driver; | |
238 | struct drv_context *drvc; | |
239 | struct dev_context *devc; | |
240 | struct sr_usb_dev_inst *usb; | |
241 | int len, ret; | |
242 | unsigned char cmd[2]; | |
243 | ||
244 | if (sdi->status != SR_ST_ACTIVE) | |
245 | return SR_ERR_DEV_CLOSED; | |
246 | ||
247 | drvc = di->context; | |
248 | devc = sdi->priv; | |
249 | usb = sdi->conn; | |
250 | ||
251 | devc->num_samples = 0; | |
252 | devc->packet_len = 0; | |
253 | ||
254 | /* Configure serial port parameters on USB-UART interface | |
255 | * chip inside the device (just baudrate 2400 actually). */ | |
256 | cmd[0] = 0x09; | |
257 | cmd[1] = 0x60; | |
258 | ret = libusb_control_transfer(usb->devhdl, 0x21, 0x09, 0x0300, 0x00, | |
259 | cmd, 2, 5); | |
260 | if (ret != 2) { | |
261 | sr_dbg("Failed to configure CH9325: %s", libusb_error_name(ret)); | |
262 | return SR_ERR; | |
263 | } | |
264 | ||
265 | std_session_send_df_header(sdi); | |
266 | ||
267 | if (!(devc->xfer = libusb_alloc_transfer(0))) | |
268 | return SR_ERR; | |
269 | ||
270 | /* Length of payload to follow. */ | |
271 | cmd[0] = 0x01; | |
272 | if (devc->data_source == DATA_SOURCE_LIVE) | |
273 | cmd[1] = CMD_GET_LIVE; | |
274 | else | |
275 | cmd[1] = CMD_GET_STORED; | |
276 | ||
277 | ret = libusb_bulk_transfer(usb->devhdl, EP_OUT, cmd, 2, &len, 5); | |
278 | if (ret != 0 || len != 2) { | |
279 | sr_dbg("Failed to start acquisition: %s", libusb_error_name(ret)); | |
280 | libusb_free_transfer(devc->xfer); | |
281 | return SR_ERR; | |
282 | } | |
283 | ||
284 | libusb_fill_bulk_transfer(devc->xfer, usb->devhdl, EP_IN, devc->buf, | |
285 | 8, uni_t_ut32x_receive_transfer, (void *)sdi, 15); | |
286 | if (libusb_submit_transfer(devc->xfer) != 0) { | |
287 | libusb_free_transfer(devc->xfer); | |
288 | return SR_ERR; | |
289 | } | |
290 | ||
291 | usb_source_add(sdi->session, drvc->sr_ctx, 10, | |
292 | uni_t_ut32x_handle_events, (void *)sdi); | |
293 | ||
294 | return SR_OK; | |
295 | } | |
296 | ||
297 | static int dev_acquisition_stop(struct sr_dev_inst *sdi) | |
298 | { | |
299 | if (sdi->status != SR_ST_ACTIVE) | |
300 | return SR_ERR_DEV_CLOSED; | |
301 | ||
302 | /* Signal USB transfer handler to clean up and stop. */ | |
303 | sdi->status = SR_ST_STOPPING; | |
304 | ||
305 | return SR_OK; | |
306 | } | |
307 | ||
308 | static struct sr_dev_driver uni_t_ut32x_driver_info = { | |
309 | .name = "uni-t-ut32x", | |
310 | .longname = "UNI-T UT32x", | |
311 | .api_version = 1, | |
312 | .init = std_init, | |
313 | .cleanup = std_cleanup, | |
314 | .scan = scan, | |
315 | .dev_list = std_dev_list, | |
316 | .dev_clear = NULL, | |
317 | .config_get = config_get, | |
318 | .config_set = config_set, | |
319 | .config_list = config_list, | |
320 | .dev_open = dev_open, | |
321 | .dev_close = dev_close, | |
322 | .dev_acquisition_start = dev_acquisition_start, | |
323 | .dev_acquisition_stop = dev_acquisition_stop, | |
324 | .context = NULL, | |
325 | }; | |
326 | SR_REGISTER_DEV_DRIVER(uni_t_ut32x_driver_info); |