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 devopts[] = {
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,
31 static const char *channel_names[] = {
35 static const char *data_sources[] = {
40 SR_PRIV struct sr_dev_driver uni_t_ut32x_driver_info;
42 static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
44 return std_init(sr_ctx, di, LOG_PREFIX);
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;
58 drvc->instances = NULL;
61 for (l = options; l; l = l->next) {
65 conn = g_variant_get_string(src->data, NULL);
73 if ((usb_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn))) {
74 /* We have a list of sr_usb_dev_inst matching the connection
75 * string. Wrap them in sr_dev_inst and we're done. */
76 for (l = usb_devices; l; l = l->next) {
77 sdi = g_malloc0(sizeof(struct sr_dev_inst));
78 sdi->status = SR_ST_INACTIVE;
79 sdi->vendor = g_strdup(VENDOR);
80 sdi->model = g_strdup(MODEL);
82 sdi->inst_type = SR_INST_USB;
84 for (i = 0; i < ARRAY_SIZE(channel_names); i++)
85 sr_channel_new(sdi, i, SR_CHANNEL_ANALOG, TRUE,
87 devc = g_malloc0(sizeof(struct dev_context));
89 devc->limit_samples = 0;
90 devc->data_source = DEFAULT_DATA_SOURCE;
91 drvc->instances = g_slist_append(drvc->instances, sdi);
92 devices = g_slist_append(devices, sdi);
94 g_slist_free(usb_devices);
96 g_slist_free_full(usb_devices, g_free);
101 static GSList *dev_list(const struct sr_dev_driver *di)
103 return ((struct drv_context *)(di->context))->instances;
106 static int dev_open(struct sr_dev_inst *sdi)
108 struct sr_dev_driver *di = sdi->driver;
109 struct drv_context *drvc;
110 struct sr_usb_dev_inst *usb;
113 if (!(drvc = di->context)) {
114 sr_err("Driver was not initialized.");
120 if (sr_usb_open(drvc->sr_ctx->libusb_ctx, usb) != SR_OK)
124 * The libusb 1.0.9 Darwin backend is broken: it can report a kernel
125 * driver being active, but detaching it always returns an error.
127 #if !defined(__APPLE__)
128 if (libusb_kernel_driver_active(usb->devhdl, USB_INTERFACE) == 1) {
129 if ((ret = libusb_detach_kernel_driver(usb->devhdl, USB_INTERFACE)) < 0) {
130 sr_err("failed to detach kernel driver: %s",
131 libusb_error_name(ret));
137 if ((ret = libusb_set_configuration(usb->devhdl, USB_CONFIGURATION))) {
138 sr_err("Failed to set configuration: %s.", libusb_error_name(ret));
142 if ((ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE))) {
143 sr_err("Failed to claim interface: %s.", libusb_error_name(ret));
146 sdi->status = SR_ST_ACTIVE;
151 static int dev_close(struct sr_dev_inst *sdi)
153 struct sr_dev_driver *di = sdi->driver;
154 struct sr_usb_dev_inst *usb;
157 sr_err("Driver was not initialized.");
166 libusb_release_interface(usb->devhdl, USB_INTERFACE);
167 libusb_close(usb->devhdl);
169 sdi->status = SR_ST_INACTIVE;
174 static int cleanup(const struct sr_dev_driver *di)
177 struct drv_context *drvc;
179 if (!(drvc = di->context))
180 /* Can get called on an unused driver, doesn't matter. */
183 ret = std_dev_clear(di, NULL);
189 static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
190 const struct sr_channel_group *cg)
192 struct dev_context *devc;
198 case SR_CONF_LIMIT_SAMPLES:
199 *data = g_variant_new_uint64(devc->limit_samples);
201 case SR_CONF_DATA_SOURCE:
202 if (devc->data_source == DATA_SOURCE_LIVE)
203 *data = g_variant_new_string("Live");
205 *data = g_variant_new_string("Memory");
214 static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi,
215 const struct sr_channel_group *cg)
217 struct sr_dev_driver *di = sdi->driver;
218 struct dev_context *devc;
223 if (sdi->status != SR_ST_ACTIVE)
224 return SR_ERR_DEV_CLOSED;
227 sr_err("Driver was not initialized.");
234 case SR_CONF_LIMIT_SAMPLES:
235 devc->limit_samples = g_variant_get_uint64(data);
237 case SR_CONF_DATA_SOURCE:
238 tmp_str = g_variant_get_string(data, NULL);
239 if (!strcmp(tmp_str, "Live"))
240 devc->data_source = DATA_SOURCE_LIVE;
241 else if (!strcmp(tmp_str, "Memory"))
242 devc->data_source = DATA_SOURCE_MEMORY;
253 static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
254 const struct sr_channel_group *cg)
260 case SR_CONF_DEVICE_OPTIONS:
261 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
262 devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
264 case SR_CONF_DATA_SOURCE:
265 *data = g_variant_new_strv(data_sources, ARRAY_SIZE(data_sources));
274 static int dev_acquisition_start(const struct sr_dev_inst *sdi,
277 struct sr_dev_driver *di = sdi->driver;
278 struct drv_context *drvc;
279 struct dev_context *devc;
280 struct sr_usb_dev_inst *usb;
282 unsigned char cmd[2];
284 if (sdi->status != SR_ST_ACTIVE)
285 return SR_ERR_DEV_CLOSED;
291 devc->cb_data = cb_data;
292 devc->num_samples = 0;
293 devc->packet_len = 0;
295 /* Configure serial port parameters on USB-UART interface
296 * chip inside the device (just baudrate 2400 actually). */
299 ret = libusb_control_transfer(usb->devhdl, 0x21, 0x09, 0x0300, 0x00,
302 sr_dbg("Failed to configure CH9325: %s", libusb_error_name(ret));
306 /* Send header packet to the session bus. */
307 std_session_send_df_header(cb_data, LOG_PREFIX);
309 if (!(devc->xfer = libusb_alloc_transfer(0)))
312 /* Length of payload to follow. */
314 if (devc->data_source == DATA_SOURCE_LIVE)
315 cmd[1] = CMD_GET_LIVE;
317 cmd[1] = CMD_GET_STORED;
319 ret = libusb_bulk_transfer(usb->devhdl, EP_OUT, cmd, 2, &len, 5);
320 if (ret != 0 || len != 2) {
321 sr_dbg("Failed to start acquisition: %s", libusb_error_name(ret));
322 libusb_free_transfer(devc->xfer);
326 libusb_fill_bulk_transfer(devc->xfer, usb->devhdl, EP_IN, devc->buf,
327 8, uni_t_ut32x_receive_transfer, (void *)sdi, 15);
328 if (libusb_submit_transfer(devc->xfer) != 0) {
329 libusb_free_transfer(devc->xfer);
333 usb_source_add(sdi->session, drvc->sr_ctx, 10,
334 uni_t_ut32x_handle_events, (void *)sdi);
339 static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
344 if (sdi->status != SR_ST_ACTIVE)
345 return SR_ERR_DEV_CLOSED;
347 /* Signal USB transfer handler to clean up and stop. */
348 sdi->status = SR_ST_STOPPING;
353 SR_PRIV struct sr_dev_driver uni_t_ut32x_driver_info = {
354 .name = "uni-t-ut32x",
355 .longname = "UNI-T UT32x",
360 .dev_list = dev_list,
362 .config_get = config_get,
363 .config_set = config_set,
364 .config_list = config_list,
365 .dev_open = dev_open,
366 .dev_close = dev_close,
367 .dev_acquisition_start = dev_acquisition_start,
368 .dev_acquisition_stop = dev_acquisition_stop,