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 devopts[] = {
31 SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET,
32 SR_CONF_DATA_SOURCE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
35 static const char *channel_names[] = {
39 static const char *data_sources[] = {
44 static GSList *scan(struct sr_dev_driver *di, GSList *options)
46 struct drv_context *drvc;
47 struct dev_context *devc;
48 struct sr_dev_inst *sdi;
49 struct sr_config *src;
50 GSList *usb_devices, *devices, *l;
57 for (l = options; l; l = l->next) {
61 conn = g_variant_get_string(src->data, NULL);
69 if ((usb_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn))) {
70 /* We have a list of sr_usb_dev_inst matching the connection
71 * string. Wrap them in sr_dev_inst and we're done. */
72 for (l = usb_devices; l; l = l->next) {
73 sdi = g_malloc0(sizeof(struct sr_dev_inst));
74 sdi->status = SR_ST_INACTIVE;
75 sdi->vendor = g_strdup(VENDOR);
76 sdi->model = g_strdup(MODEL);
77 sdi->inst_type = SR_INST_USB;
79 for (i = 0; i < ARRAY_SIZE(channel_names); i++)
80 sr_channel_new(sdi, i, SR_CHANNEL_ANALOG, TRUE,
82 devc = g_malloc0(sizeof(struct dev_context));
84 devc->limit_samples = 0;
85 devc->data_source = DEFAULT_DATA_SOURCE;
86 devices = g_slist_append(devices, sdi);
88 g_slist_free(usb_devices);
90 g_slist_free_full(usb_devices, g_free);
92 return std_scan_complete(di, devices);
95 static int dev_open(struct sr_dev_inst *sdi)
97 struct sr_dev_driver *di = sdi->driver;
98 struct drv_context *drvc = di->context;
99 struct sr_usb_dev_inst *usb;
104 if (sr_usb_open(drvc->sr_ctx->libusb_ctx, usb) != SR_OK)
108 * The libusb 1.0.9 Darwin backend is broken: it can report a kernel
109 * driver being active, but detaching it always returns an error.
111 #if !defined(__APPLE__)
112 if (libusb_kernel_driver_active(usb->devhdl, USB_INTERFACE) == 1) {
113 if ((ret = libusb_detach_kernel_driver(usb->devhdl, USB_INTERFACE)) < 0) {
114 sr_err("failed to detach kernel driver: %s",
115 libusb_error_name(ret));
121 if ((ret = libusb_set_configuration(usb->devhdl, USB_CONFIGURATION))) {
122 sr_err("Failed to set configuration: %s.", libusb_error_name(ret));
126 if ((ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE))) {
127 sr_err("Failed to claim interface: %s.", libusb_error_name(ret));
130 sdi->status = SR_ST_ACTIVE;
135 static int dev_close(struct sr_dev_inst *sdi)
137 struct sr_usb_dev_inst *usb;
144 libusb_release_interface(usb->devhdl, USB_INTERFACE);
145 libusb_close(usb->devhdl);
147 sdi->status = SR_ST_INACTIVE;
152 static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
153 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, const struct sr_dev_inst *sdi,
178 const struct sr_channel_group *cg)
180 struct dev_context *devc;
185 if (sdi->status != SR_ST_ACTIVE)
186 return SR_ERR_DEV_CLOSED;
191 case SR_CONF_LIMIT_SAMPLES:
192 devc->limit_samples = g_variant_get_uint64(data);
194 case SR_CONF_DATA_SOURCE:
195 tmp_str = g_variant_get_string(data, NULL);
196 if (!strcmp(tmp_str, "Live"))
197 devc->data_source = DATA_SOURCE_LIVE;
198 else if (!strcmp(tmp_str, "Memory"))
199 devc->data_source = DATA_SOURCE_MEMORY;
210 static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
211 const struct sr_channel_group *cg)
217 case SR_CONF_SCAN_OPTIONS:
218 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
219 scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
221 case SR_CONF_DEVICE_OPTIONS:
222 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
223 devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
225 case SR_CONF_DATA_SOURCE:
226 *data = g_variant_new_strv(data_sources, ARRAY_SIZE(data_sources));
235 static int dev_acquisition_start(const struct sr_dev_inst *sdi)
237 struct sr_dev_driver *di = sdi->driver;
238 struct drv_context *drvc;
239 struct dev_context *devc;
240 struct sr_usb_dev_inst *usb;
242 unsigned char cmd[2];
244 if (sdi->status != SR_ST_ACTIVE)
245 return SR_ERR_DEV_CLOSED;
251 devc->num_samples = 0;
252 devc->packet_len = 0;
254 /* Configure serial port parameters on USB-UART interface
255 * chip inside the device (just baudrate 2400 actually). */
258 ret = libusb_control_transfer(usb->devhdl, 0x21, 0x09, 0x0300, 0x00,
261 sr_dbg("Failed to configure CH9325: %s", libusb_error_name(ret));
265 std_session_send_df_header(sdi);
267 if (!(devc->xfer = libusb_alloc_transfer(0)))
270 /* Length of payload to follow. */
272 if (devc->data_source == DATA_SOURCE_LIVE)
273 cmd[1] = CMD_GET_LIVE;
275 cmd[1] = CMD_GET_STORED;
277 ret = libusb_bulk_transfer(usb->devhdl, EP_OUT, cmd, 2, &len, 5);
278 if (ret != 0 || len != 2) {
279 sr_dbg("Failed to start acquisition: %s", libusb_error_name(ret));
280 libusb_free_transfer(devc->xfer);
284 libusb_fill_bulk_transfer(devc->xfer, usb->devhdl, EP_IN, devc->buf,
285 8, uni_t_ut32x_receive_transfer, (void *)sdi, 15);
286 if (libusb_submit_transfer(devc->xfer) != 0) {
287 libusb_free_transfer(devc->xfer);
291 usb_source_add(sdi->session, drvc->sr_ctx, 10,
292 uni_t_ut32x_handle_events, (void *)sdi);
297 static int dev_acquisition_stop(struct sr_dev_inst *sdi)
299 if (sdi->status != SR_ST_ACTIVE)
300 return SR_ERR_DEV_CLOSED;
302 /* Signal USB transfer handler to clean up and stop. */
303 sdi->status = SR_ST_STOPPING;
308 static struct sr_dev_driver uni_t_ut32x_driver_info = {
309 .name = "uni-t-ut32x",
310 .longname = "UNI-T UT32x",
313 .cleanup = std_cleanup,
315 .dev_list = std_dev_list,
317 .config_get = config_get,
318 .config_set = config_set,
319 .config_list = config_list,
320 .dev_open = dev_open,
321 .dev_close = dev_close,
322 .dev_acquisition_start = dev_acquisition_start,
323 .dev_acquisition_stop = dev_acquisition_stop,
326 SR_REGISTER_DEV_DRIVER(uni_t_ut32x_driver_info);