2 * This file is part of the libsigrok project.
4 * Copyright (C) 2013 Bert Vermeulen <bert@biot.com>
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.
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.
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/>.
24 static const uint32_t scanopts[] = {
28 static const uint32_t drvopts[] = {
32 static const uint32_t devopts[] = {
34 SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET,
35 SR_CONF_LIMIT_MSEC | SR_CONF_GET | SR_CONF_SET,
36 SR_CONF_DATA_SOURCE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
40 * BEWARE! "T1-T2" looks like a range, and is probably not a good
41 * channel name. Using it in sigrok-cli -C specs is troublesome. Use
42 * "delta" instead? -- But OTOH channels are not selected by the
43 * software. Instead received packets just reflect the one channel
44 * that manually was selected by the user via the device's buttons.
45 * So the name is not a blocker, and it matches the labels on the
46 * device and in the manual. So we can get away with it.
48 static const char *channel_names[] = {
52 static const char *data_sources[] = {
56 static GSList *scan(struct sr_dev_driver *di, GSList *options)
58 struct drv_context *drvc;
59 struct dev_context *devc;
60 struct sr_dev_inst *sdi;
61 struct sr_config *src;
62 GSList *usb_devices, *devices, *l;
69 for (l = options; l; l = l->next) {
73 conn = g_variant_get_string(src->data, NULL);
81 if ((usb_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn))) {
82 /* We have a list of sr_usb_dev_inst matching the connection
83 * string. Wrap them in sr_dev_inst and we're done. */
84 for (l = usb_devices; l; l = l->next) {
85 sdi = g_malloc0(sizeof(struct sr_dev_inst));
86 sdi->status = SR_ST_INACTIVE;
87 sdi->vendor = g_strdup("UNI-T");
88 sdi->model = g_strdup("UT32x");
89 sdi->inst_type = SR_INST_USB;
91 for (i = 0; i < ARRAY_SIZE(channel_names); i++)
92 sr_channel_new(sdi, i, SR_CHANNEL_ANALOG, TRUE,
94 devc = g_malloc0(sizeof(struct dev_context));
96 sr_sw_limits_init(&devc->limits);
97 devc->data_source = DEFAULT_DATA_SOURCE;
98 devices = g_slist_append(devices, sdi);
100 g_slist_free(usb_devices);
102 g_slist_free_full(usb_devices, g_free);
104 return std_scan_complete(di, devices);
107 static int dev_open(struct sr_dev_inst *sdi)
109 struct sr_dev_driver *di = sdi->driver;
110 struct drv_context *drvc = di->context;
111 struct sr_usb_dev_inst *usb;
116 if (sr_usb_open(drvc->sr_ctx->libusb_ctx, usb) != SR_OK)
120 * The libusb 1.0.9 Darwin backend is broken: it can report a kernel
121 * driver being active, but detaching it always returns an error.
123 #if !defined(__APPLE__)
124 if (libusb_kernel_driver_active(usb->devhdl, USB_INTERFACE) == 1) {
125 if ((ret = libusb_detach_kernel_driver(usb->devhdl, USB_INTERFACE)) < 0) {
126 sr_err("failed to detach kernel driver: %s",
127 libusb_error_name(ret));
133 if ((ret = libusb_set_configuration(usb->devhdl, USB_CONFIGURATION))) {
134 sr_err("Failed to set configuration: %s.", libusb_error_name(ret));
138 if ((ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE))) {
139 sr_err("Failed to claim interface: %s.", libusb_error_name(ret));
146 static int dev_close(struct sr_dev_inst *sdi)
148 struct sr_usb_dev_inst *usb;
155 libusb_release_interface(usb->devhdl, USB_INTERFACE);
156 libusb_close(usb->devhdl);
162 static int config_get(uint32_t key, GVariant **data,
163 const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
165 struct dev_context *devc;
171 case SR_CONF_LIMIT_SAMPLES:
172 case SR_CONF_LIMIT_MSEC:
173 return sr_sw_limits_config_get(&devc->limits, key, data);
174 case SR_CONF_DATA_SOURCE:
175 *data = g_variant_new_string(data_sources[devc->data_source]);
184 static int config_set(uint32_t key, GVariant *data,
185 const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
187 struct dev_context *devc;
195 case SR_CONF_LIMIT_SAMPLES:
196 case SR_CONF_LIMIT_MSEC:
197 return sr_sw_limits_config_set(&devc->limits, key, data);
198 case SR_CONF_DATA_SOURCE:
199 if ((idx = std_str_idx(data, ARRAY_AND_SIZE(data_sources))) < 0)
201 devc->data_source = idx;
210 static int config_list(uint32_t key, GVariant **data,
211 const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
214 case SR_CONF_SCAN_OPTIONS:
215 case SR_CONF_DEVICE_OPTIONS:
216 return STD_CONFIG_LIST(key, data, sdi, cg, scanopts, drvopts, devopts);
217 case SR_CONF_DATA_SOURCE:
218 *data = g_variant_new_strv(ARRAY_AND_SIZE(data_sources));
227 static int dev_acquisition_start(const struct sr_dev_inst *sdi)
229 struct sr_dev_driver *di = sdi->driver;
230 struct drv_context *drvc;
231 struct dev_context *devc;
232 struct sr_usb_dev_inst *usb;
234 unsigned char cmd[2];
240 sr_sw_limits_acquisition_start(&devc->limits);
241 devc->packet_len = 0;
243 /* Configure serial port parameters on USB-UART interface
244 * chip inside the device (just baudrate 2400 actually). */
247 ret = libusb_control_transfer(usb->devhdl, 0x21, 0x09, 0x0300, 0x00,
250 sr_dbg("Failed to configure CH9325: %s", libusb_error_name(ret));
254 std_session_send_df_header(sdi);
256 if (!(devc->xfer = libusb_alloc_transfer(0)))
259 /* Length of payload to follow. */
261 if (devc->data_source == DATA_SOURCE_LIVE)
262 cmd[1] = CMD_GET_LIVE;
264 cmd[1] = CMD_GET_STORED;
266 ret = libusb_bulk_transfer(usb->devhdl, EP_OUT, cmd, 2, &len, 5);
267 if (ret != 0 || len != 2) {
268 sr_dbg("Failed to start acquisition: %s", libusb_error_name(ret));
269 libusb_free_transfer(devc->xfer);
273 libusb_fill_bulk_transfer(devc->xfer, usb->devhdl, EP_IN, devc->buf,
274 8, uni_t_ut32x_receive_transfer, (void *)sdi, 15);
275 if (libusb_submit_transfer(devc->xfer) != 0) {
276 libusb_free_transfer(devc->xfer);
280 usb_source_add(sdi->session, drvc->sr_ctx, 10,
281 uni_t_ut32x_handle_events, (void *)sdi);
286 static int dev_acquisition_stop(struct sr_dev_inst *sdi)
288 /* Signal USB transfer handler to clean up and stop. */
289 sdi->status = SR_ST_STOPPING;
294 static struct sr_dev_driver uni_t_ut32x_driver_info = {
295 .name = "uni-t-ut32x",
296 .longname = "UNI-T UT32x",
299 .cleanup = std_cleanup,
301 .dev_list = std_dev_list,
302 .dev_clear = std_dev_clear,
303 .config_get = config_get,
304 .config_set = config_set,
305 .config_list = config_list,
306 .dev_open = dev_open,
307 .dev_close = dev_close,
308 .dev_acquisition_start = dev_acquisition_start,
309 .dev_acquisition_stop = dev_acquisition_stop,
312 SR_REGISTER_DEV_DRIVER(uni_t_ut32x_driver_info);