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_DATA_SOURCE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
38 static const char *channel_names[] = {
42 static const char *data_sources[] = {
46 static GSList *scan(struct sr_dev_driver *di, GSList *options)
48 struct drv_context *drvc;
49 struct dev_context *devc;
50 struct sr_dev_inst *sdi;
51 struct sr_config *src;
52 GSList *usb_devices, *devices, *l;
59 for (l = options; l; l = l->next) {
63 conn = g_variant_get_string(src->data, NULL);
71 if ((usb_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn))) {
72 /* We have a list of sr_usb_dev_inst matching the connection
73 * string. Wrap them in sr_dev_inst and we're done. */
74 for (l = usb_devices; l; l = l->next) {
75 sdi = g_malloc0(sizeof(struct sr_dev_inst));
76 sdi->status = SR_ST_INACTIVE;
77 sdi->vendor = g_strdup("UNI-T");
78 sdi->model = g_strdup("UT32x");
79 sdi->inst_type = SR_INST_USB;
81 for (i = 0; i < ARRAY_SIZE(channel_names); i++)
82 sr_channel_new(sdi, i, SR_CHANNEL_ANALOG, TRUE,
84 devc = g_malloc0(sizeof(struct dev_context));
86 devc->limit_samples = 0;
87 devc->data_source = DEFAULT_DATA_SOURCE;
88 devices = g_slist_append(devices, sdi);
90 g_slist_free(usb_devices);
92 g_slist_free_full(usb_devices, g_free);
94 return std_scan_complete(di, devices);
97 static int dev_open(struct sr_dev_inst *sdi)
99 struct sr_dev_driver *di = sdi->driver;
100 struct drv_context *drvc = di->context;
101 struct sr_usb_dev_inst *usb;
106 if (sr_usb_open(drvc->sr_ctx->libusb_ctx, usb) != SR_OK)
110 * The libusb 1.0.9 Darwin backend is broken: it can report a kernel
111 * driver being active, but detaching it always returns an error.
113 #if !defined(__APPLE__)
114 if (libusb_kernel_driver_active(usb->devhdl, USB_INTERFACE) == 1) {
115 if ((ret = libusb_detach_kernel_driver(usb->devhdl, USB_INTERFACE)) < 0) {
116 sr_err("failed to detach kernel driver: %s",
117 libusb_error_name(ret));
123 if ((ret = libusb_set_configuration(usb->devhdl, USB_CONFIGURATION))) {
124 sr_err("Failed to set configuration: %s.", libusb_error_name(ret));
128 if ((ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE))) {
129 sr_err("Failed to claim interface: %s.", libusb_error_name(ret));
136 static int dev_close(struct sr_dev_inst *sdi)
138 struct sr_usb_dev_inst *usb;
145 libusb_release_interface(usb->devhdl, USB_INTERFACE);
146 libusb_close(usb->devhdl);
152 static int config_get(uint32_t key, GVariant **data,
153 const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
155 struct dev_context *devc;
161 case SR_CONF_LIMIT_SAMPLES:
162 *data = g_variant_new_uint64(devc->limit_samples);
164 case SR_CONF_DATA_SOURCE:
165 if (devc->data_source == DATA_SOURCE_LIVE)
166 *data = g_variant_new_string("Live");
168 *data = g_variant_new_string("Memory");
177 static int config_set(uint32_t key, GVariant *data,
178 const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
180 struct dev_context *devc;
188 case SR_CONF_LIMIT_SAMPLES:
189 devc->limit_samples = g_variant_get_uint64(data);
191 case SR_CONF_DATA_SOURCE:
192 if ((idx = std_str_idx(data, ARRAY_AND_SIZE(data_sources))) < 0)
194 devc->data_source = idx;
203 static int config_list(uint32_t key, GVariant **data,
204 const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
207 case SR_CONF_SCAN_OPTIONS:
208 case SR_CONF_DEVICE_OPTIONS:
209 return STD_CONFIG_LIST(key, data, sdi, cg, scanopts, drvopts, devopts);
210 case SR_CONF_DATA_SOURCE:
211 *data = g_variant_new_strv(ARRAY_AND_SIZE(data_sources));
220 static int dev_acquisition_start(const struct sr_dev_inst *sdi)
222 struct sr_dev_driver *di = sdi->driver;
223 struct drv_context *drvc;
224 struct dev_context *devc;
225 struct sr_usb_dev_inst *usb;
227 unsigned char cmd[2];
233 devc->num_samples = 0;
234 devc->packet_len = 0;
236 /* Configure serial port parameters on USB-UART interface
237 * chip inside the device (just baudrate 2400 actually). */
240 ret = libusb_control_transfer(usb->devhdl, 0x21, 0x09, 0x0300, 0x00,
243 sr_dbg("Failed to configure CH9325: %s", libusb_error_name(ret));
247 std_session_send_df_header(sdi);
249 if (!(devc->xfer = libusb_alloc_transfer(0)))
252 /* Length of payload to follow. */
254 if (devc->data_source == DATA_SOURCE_LIVE)
255 cmd[1] = CMD_GET_LIVE;
257 cmd[1] = CMD_GET_STORED;
259 ret = libusb_bulk_transfer(usb->devhdl, EP_OUT, cmd, 2, &len, 5);
260 if (ret != 0 || len != 2) {
261 sr_dbg("Failed to start acquisition: %s", libusb_error_name(ret));
262 libusb_free_transfer(devc->xfer);
266 libusb_fill_bulk_transfer(devc->xfer, usb->devhdl, EP_IN, devc->buf,
267 8, uni_t_ut32x_receive_transfer, (void *)sdi, 15);
268 if (libusb_submit_transfer(devc->xfer) != 0) {
269 libusb_free_transfer(devc->xfer);
273 usb_source_add(sdi->session, drvc->sr_ctx, 10,
274 uni_t_ut32x_handle_events, (void *)sdi);
279 static int dev_acquisition_stop(struct sr_dev_inst *sdi)
281 /* Signal USB transfer handler to clean up and stop. */
282 sdi->status = SR_ST_STOPPING;
287 static struct sr_dev_driver uni_t_ut32x_driver_info = {
288 .name = "uni-t-ut32x",
289 .longname = "UNI-T UT32x",
292 .cleanup = std_cleanup,
294 .dev_list = std_dev_list,
295 .dev_clear = std_dev_clear,
296 .config_get = config_get,
297 .config_set = config_set,
298 .config_list = config_list,
299 .dev_open = dev_open,
300 .dev_close = dev_close,
301 .dev_acquisition_start = dev_acquisition_start,
302 .dev_acquisition_stop = dev_acquisition_stop,
305 SR_REGISTER_DEV_DRIVER(uni_t_ut32x_driver_info);