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[] = {
47 static GSList *scan(struct sr_dev_driver *di, GSList *options)
49 struct drv_context *drvc;
50 struct dev_context *devc;
51 struct sr_dev_inst *sdi;
52 struct sr_config *src;
53 GSList *usb_devices, *devices, *l;
60 for (l = options; l; l = l->next) {
64 conn = g_variant_get_string(src->data, NULL);
72 if ((usb_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn))) {
73 /* We have a list of sr_usb_dev_inst matching the connection
74 * string. Wrap them in sr_dev_inst and we're done. */
75 for (l = usb_devices; l; l = l->next) {
76 sdi = g_malloc0(sizeof(struct sr_dev_inst));
77 sdi->status = SR_ST_INACTIVE;
78 sdi->vendor = g_strdup(VENDOR);
79 sdi->model = g_strdup(MODEL);
80 sdi->inst_type = SR_INST_USB;
82 for (i = 0; i < ARRAY_SIZE(channel_names); i++)
83 sr_channel_new(sdi, i, SR_CHANNEL_ANALOG, TRUE,
85 devc = g_malloc0(sizeof(struct dev_context));
87 devc->limit_samples = 0;
88 devc->data_source = DEFAULT_DATA_SOURCE;
89 devices = g_slist_append(devices, sdi);
91 g_slist_free(usb_devices);
93 g_slist_free_full(usb_devices, g_free);
95 return std_scan_complete(di, devices);
98 static int dev_open(struct sr_dev_inst *sdi)
100 struct sr_dev_driver *di = sdi->driver;
101 struct drv_context *drvc = di->context;
102 struct sr_usb_dev_inst *usb;
107 if (sr_usb_open(drvc->sr_ctx->libusb_ctx, usb) != SR_OK)
111 * The libusb 1.0.9 Darwin backend is broken: it can report a kernel
112 * driver being active, but detaching it always returns an error.
114 #if !defined(__APPLE__)
115 if (libusb_kernel_driver_active(usb->devhdl, USB_INTERFACE) == 1) {
116 if ((ret = libusb_detach_kernel_driver(usb->devhdl, USB_INTERFACE)) < 0) {
117 sr_err("failed to detach kernel driver: %s",
118 libusb_error_name(ret));
124 if ((ret = libusb_set_configuration(usb->devhdl, USB_CONFIGURATION))) {
125 sr_err("Failed to set configuration: %s.", libusb_error_name(ret));
129 if ((ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE))) {
130 sr_err("Failed to claim interface: %s.", libusb_error_name(ret));
137 static int dev_close(struct sr_dev_inst *sdi)
139 struct sr_usb_dev_inst *usb;
146 libusb_release_interface(usb->devhdl, USB_INTERFACE);
147 libusb_close(usb->devhdl);
153 static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
154 const struct sr_channel_group *cg)
156 struct dev_context *devc;
162 case SR_CONF_LIMIT_SAMPLES:
163 *data = g_variant_new_uint64(devc->limit_samples);
165 case SR_CONF_DATA_SOURCE:
166 if (devc->data_source == DATA_SOURCE_LIVE)
167 *data = g_variant_new_string("Live");
169 *data = g_variant_new_string("Memory");
178 static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi,
179 const struct sr_channel_group *cg)
181 struct dev_context *devc;
189 case SR_CONF_LIMIT_SAMPLES:
190 devc->limit_samples = g_variant_get_uint64(data);
192 case SR_CONF_DATA_SOURCE:
193 tmp_str = g_variant_get_string(data, NULL);
194 if (!strcmp(tmp_str, "Live"))
195 devc->data_source = DATA_SOURCE_LIVE;
196 else if (!strcmp(tmp_str, "Memory"))
197 devc->data_source = DATA_SOURCE_MEMORY;
208 static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
209 const struct sr_channel_group *cg)
212 case SR_CONF_SCAN_OPTIONS:
213 case SR_CONF_DEVICE_OPTIONS:
214 return STD_CONFIG_LIST(key, data, sdi, cg, scanopts, drvopts, devopts);
215 case SR_CONF_DATA_SOURCE:
216 *data = g_variant_new_strv(ARRAY_AND_SIZE(data_sources));
225 static int dev_acquisition_start(const struct sr_dev_inst *sdi)
227 struct sr_dev_driver *di = sdi->driver;
228 struct drv_context *drvc;
229 struct dev_context *devc;
230 struct sr_usb_dev_inst *usb;
232 unsigned char cmd[2];
238 devc->num_samples = 0;
239 devc->packet_len = 0;
241 /* Configure serial port parameters on USB-UART interface
242 * chip inside the device (just baudrate 2400 actually). */
245 ret = libusb_control_transfer(usb->devhdl, 0x21, 0x09, 0x0300, 0x00,
248 sr_dbg("Failed to configure CH9325: %s", libusb_error_name(ret));
252 std_session_send_df_header(sdi);
254 if (!(devc->xfer = libusb_alloc_transfer(0)))
257 /* Length of payload to follow. */
259 if (devc->data_source == DATA_SOURCE_LIVE)
260 cmd[1] = CMD_GET_LIVE;
262 cmd[1] = CMD_GET_STORED;
264 ret = libusb_bulk_transfer(usb->devhdl, EP_OUT, cmd, 2, &len, 5);
265 if (ret != 0 || len != 2) {
266 sr_dbg("Failed to start acquisition: %s", libusb_error_name(ret));
267 libusb_free_transfer(devc->xfer);
271 libusb_fill_bulk_transfer(devc->xfer, usb->devhdl, EP_IN, devc->buf,
272 8, uni_t_ut32x_receive_transfer, (void *)sdi, 15);
273 if (libusb_submit_transfer(devc->xfer) != 0) {
274 libusb_free_transfer(devc->xfer);
278 usb_source_add(sdi->session, drvc->sr_ctx, 10,
279 uni_t_ut32x_handle_events, (void *)sdi);
284 static int dev_acquisition_stop(struct sr_dev_inst *sdi)
286 /* Signal USB transfer handler to clean up and stop. */
287 sdi->status = SR_ST_STOPPING;
292 static struct sr_dev_driver uni_t_ut32x_driver_info = {
293 .name = "uni-t-ut32x",
294 .longname = "UNI-T UT32x",
297 .cleanup = std_cleanup,
299 .dev_list = std_dev_list,
300 .dev_clear = std_dev_clear,
301 .config_get = config_get,
302 .config_set = config_set,
303 .config_list = config_list,
304 .dev_open = dev_open,
305 .dev_close = dev_close,
306 .dev_acquisition_start = dev_acquisition_start,
307 .dev_acquisition_stop = dev_acquisition_stop,
310 SR_REGISTER_DEV_DRIVER(uni_t_ut32x_driver_info);