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 char *channels[] = {
37 static const char *data_sources[] = {
42 SR_PRIV struct sr_dev_driver uni_t_ut32x_driver_info;
43 static struct sr_dev_driver *di = &uni_t_ut32x_driver_info;
46 static int init(struct sr_context *sr_ctx)
48 return std_init(sr_ctx, di, LOG_PREFIX);
51 static GSList *scan(GSList *options)
53 struct drv_context *drvc;
54 struct dev_context *devc;
55 struct sr_dev_inst *sdi;
56 struct sr_channel *ch;
57 struct sr_config *src;
58 GSList *usb_devices, *devices, *l;
63 drvc->instances = NULL;
66 for (l = options; l; l = l->next) {
70 conn = g_variant_get_string(src->data, NULL);
78 if ((usb_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn))) {
79 /* We have a list of sr_usb_dev_inst matching the connection
80 * string. Wrap them in sr_dev_inst and we're done. */
81 for (l = usb_devices; l; l = l->next) {
82 sdi = g_malloc0(sizeof(struct sr_dev_inst));
83 sdi->status = SR_ST_INACTIVE;
84 sdi->vendor = g_strdup(VENDOR);
85 sdi->model = g_strdup(MODEL);
87 sdi->inst_type = SR_INST_USB;
89 for (i = 0; i < 3; i++) {
90 ch = sr_channel_new(i, SR_CHANNEL_ANALOG, TRUE,
92 sdi->channels = g_slist_append(sdi->channels, ch);
94 devc = g_malloc0(sizeof(struct dev_context));
96 devc->limit_samples = 0;
97 devc->data_source = DEFAULT_DATA_SOURCE;
98 drvc->instances = g_slist_append(drvc->instances, sdi);
99 devices = g_slist_append(devices, sdi);
101 g_slist_free(usb_devices);
103 g_slist_free_full(usb_devices, g_free);
108 static GSList *dev_list(void)
110 return ((struct drv_context *)(di->priv))->instances;
113 static int dev_open(struct sr_dev_inst *sdi)
115 struct drv_context *drvc;
116 struct sr_usb_dev_inst *usb;
119 if (!(drvc = di->priv)) {
120 sr_err("Driver was not initialized.");
126 if (sr_usb_open(drvc->sr_ctx->libusb_ctx, usb) != SR_OK)
130 * The libusbx 1.0.9 darwin backend is broken: it can report a kernel
131 * driver being active, but detaching it always returns an error.
133 #if !defined(__APPLE__)
134 if (libusb_kernel_driver_active(usb->devhdl, USB_INTERFACE) == 1) {
135 if ((ret = libusb_detach_kernel_driver(usb->devhdl, USB_INTERFACE)) < 0) {
136 sr_err("failed to detach kernel driver: %s",
137 libusb_error_name(ret));
143 if ((ret = libusb_set_configuration(usb->devhdl, USB_CONFIGURATION))) {
144 sr_err("Failed to set configuration: %s.", libusb_error_name(ret));
148 if ((ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE))) {
149 sr_err("Failed to claim interface: %s.", libusb_error_name(ret));
152 sdi->status = SR_ST_ACTIVE;
157 static int dev_close(struct sr_dev_inst *sdi)
159 struct sr_usb_dev_inst *usb;
162 sr_err("Driver was not initialized.");
171 libusb_release_interface(usb->devhdl, USB_INTERFACE);
172 libusb_close(usb->devhdl);
174 sdi->status = SR_ST_INACTIVE;
179 static int cleanup(void)
182 struct drv_context *drvc;
184 if (!(drvc = di->priv))
185 /* Can get called on an unused driver, doesn't matter. */
189 ret = std_dev_clear(di, NULL);
196 static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
197 const struct sr_channel_group *cg)
199 struct dev_context *devc;
205 case SR_CONF_LIMIT_SAMPLES:
206 *data = g_variant_new_uint64(devc->limit_samples);
208 case SR_CONF_DATA_SOURCE:
209 if (devc->data_source == DATA_SOURCE_LIVE)
210 *data = g_variant_new_string("Live");
212 *data = g_variant_new_string("Memory");
221 static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi,
222 const struct sr_channel_group *cg)
224 struct dev_context *devc;
230 if (sdi->status != SR_ST_ACTIVE)
231 return SR_ERR_DEV_CLOSED;
234 sr_err("Driver was not initialized.");
241 case SR_CONF_LIMIT_SAMPLES:
242 devc->limit_samples = g_variant_get_uint64(data);
243 sr_dbg("Setting sample limit to %" PRIu64 ".",
244 devc->limit_samples);
246 case SR_CONF_DATA_SOURCE:
247 tmp_str = g_variant_get_string(data, NULL);
248 if (!strcmp(tmp_str, "Live"))
249 devc->data_source = DATA_SOURCE_LIVE;
250 else if (!strcmp(tmp_str, "Memory"))
251 devc->data_source = DATA_SOURCE_MEMORY;
262 static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
263 const struct sr_channel_group *cg)
270 case SR_CONF_DEVICE_OPTIONS:
271 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
272 devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
274 case SR_CONF_DATA_SOURCE:
275 *data = g_variant_new_strv(data_sources, ARRAY_SIZE(data_sources));
284 static int dev_acquisition_start(const struct sr_dev_inst *sdi,
287 struct drv_context *drvc;
288 struct dev_context *devc;
289 struct sr_usb_dev_inst *usb;
291 unsigned char cmd[2];
293 if (sdi->status != SR_ST_ACTIVE)
294 return SR_ERR_DEV_CLOSED;
300 devc->cb_data = cb_data;
301 devc->num_samples = 0;
302 devc->packet_len = 0;
304 /* Configure serial port parameters on USB-UART interface
305 * chip inside the device (just baudrate 2400 actually). */
308 ret = libusb_control_transfer(usb->devhdl, 0x21, 0x09, 0x0300, 0x00,
311 sr_dbg("Failed to configure CH9325: %s", libusb_error_name(ret));
315 /* Send header packet to the session bus. */
316 std_session_send_df_header(cb_data, LOG_PREFIX);
318 if (!(devc->xfer = libusb_alloc_transfer(0)))
321 /* Length of payload to follow. */
323 if (devc->data_source == DATA_SOURCE_LIVE)
324 cmd[1] = CMD_GET_LIVE;
326 cmd[1] = CMD_GET_STORED;
328 ret = libusb_bulk_transfer(usb->devhdl, EP_OUT, cmd, 2, &len, 5);
329 if (ret != 0 || len != 2) {
330 sr_dbg("Failed to start acquisition: %s", libusb_error_name(ret));
331 libusb_free_transfer(devc->xfer);
335 libusb_fill_bulk_transfer(devc->xfer, usb->devhdl, EP_IN, devc->buf,
336 8, uni_t_ut32x_receive_transfer, (void *)sdi, 15);
337 if (libusb_submit_transfer(devc->xfer) != 0) {
338 libusb_free_transfer(devc->xfer);
342 usb_source_add(sdi->session, drvc->sr_ctx, 10,
343 uni_t_ut32x_handle_events, (void *)sdi);
348 static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
353 if (sdi->status != SR_ST_ACTIVE)
354 return SR_ERR_DEV_CLOSED;
356 /* Signal USB transfer handler to clean up and stop. */
357 sdi->status = SR_ST_STOPPING;
362 SR_PRIV struct sr_dev_driver uni_t_ut32x_driver_info = {
363 .name = "uni-t-ut32x",
364 .longname = "UNI-T UT32x",
369 .dev_list = dev_list,
371 .config_get = config_get,
372 .config_set = config_set,
373 .config_list = config_list,
374 .dev_open = dev_open,
375 .dev_close = dev_close,
376 .dev_acquisition_start = dev_acquisition_start,
377 .dev_acquisition_stop = dev_acquisition_stop,