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 static GSList *scan(struct sr_dev_driver *di, GSList *options)
42 struct drv_context *drvc;
43 struct dev_context *devc;
44 struct sr_dev_inst *sdi;
45 struct sr_config *src;
46 GSList *usb_devices, *devices, *l;
53 for (l = options; l; l = l->next) {
57 conn = g_variant_get_string(src->data, NULL);
65 if ((usb_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn))) {
66 /* We have a list of sr_usb_dev_inst matching the connection
67 * string. Wrap them in sr_dev_inst and we're done. */
68 for (l = usb_devices; l; l = l->next) {
69 sdi = g_malloc0(sizeof(struct sr_dev_inst));
70 sdi->status = SR_ST_INACTIVE;
71 sdi->vendor = g_strdup(VENDOR);
72 sdi->model = g_strdup(MODEL);
73 sdi->inst_type = SR_INST_USB;
75 for (i = 0; i < ARRAY_SIZE(channel_names); i++)
76 sr_channel_new(sdi, i, SR_CHANNEL_ANALOG, TRUE,
78 devc = g_malloc0(sizeof(struct dev_context));
80 devc->limit_samples = 0;
81 devc->data_source = DEFAULT_DATA_SOURCE;
82 devices = g_slist_append(devices, sdi);
84 g_slist_free(usb_devices);
86 g_slist_free_full(usb_devices, g_free);
88 return std_scan_complete(di, devices);
91 static int dev_open(struct sr_dev_inst *sdi)
93 struct sr_dev_driver *di = sdi->driver;
94 struct drv_context *drvc = di->context;
95 struct sr_usb_dev_inst *usb;
100 if (sr_usb_open(drvc->sr_ctx->libusb_ctx, usb) != SR_OK)
104 * The libusb 1.0.9 Darwin backend is broken: it can report a kernel
105 * driver being active, but detaching it always returns an error.
107 #if !defined(__APPLE__)
108 if (libusb_kernel_driver_active(usb->devhdl, USB_INTERFACE) == 1) {
109 if ((ret = libusb_detach_kernel_driver(usb->devhdl, USB_INTERFACE)) < 0) {
110 sr_err("failed to detach kernel driver: %s",
111 libusb_error_name(ret));
117 if ((ret = libusb_set_configuration(usb->devhdl, USB_CONFIGURATION))) {
118 sr_err("Failed to set configuration: %s.", libusb_error_name(ret));
122 if ((ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE))) {
123 sr_err("Failed to claim interface: %s.", libusb_error_name(ret));
126 sdi->status = SR_ST_ACTIVE;
131 static int dev_close(struct sr_dev_inst *sdi)
133 struct sr_usb_dev_inst *usb;
140 libusb_release_interface(usb->devhdl, USB_INTERFACE);
141 libusb_close(usb->devhdl);
143 sdi->status = SR_ST_INACTIVE;
148 static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
149 const struct sr_channel_group *cg)
151 struct dev_context *devc;
157 case SR_CONF_LIMIT_SAMPLES:
158 *data = g_variant_new_uint64(devc->limit_samples);
160 case SR_CONF_DATA_SOURCE:
161 if (devc->data_source == DATA_SOURCE_LIVE)
162 *data = g_variant_new_string("Live");
164 *data = g_variant_new_string("Memory");
173 static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi,
174 const struct sr_channel_group *cg)
176 struct dev_context *devc;
181 if (sdi->status != SR_ST_ACTIVE)
182 return SR_ERR_DEV_CLOSED;
187 case SR_CONF_LIMIT_SAMPLES:
188 devc->limit_samples = g_variant_get_uint64(data);
190 case SR_CONF_DATA_SOURCE:
191 tmp_str = g_variant_get_string(data, NULL);
192 if (!strcmp(tmp_str, "Live"))
193 devc->data_source = DATA_SOURCE_LIVE;
194 else if (!strcmp(tmp_str, "Memory"))
195 devc->data_source = DATA_SOURCE_MEMORY;
206 static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
207 const struct sr_channel_group *cg)
213 case SR_CONF_DEVICE_OPTIONS:
214 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
215 devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
217 case SR_CONF_DATA_SOURCE:
218 *data = g_variant_new_strv(data_sources, ARRAY_SIZE(data_sources));
227 static int dev_acquisition_start(const struct sr_dev_inst *sdi)
229 struct sr_dev_driver *di = sdi->driver;
230 struct drv_context *drvc;
231 struct dev_context *devc;
232 struct sr_usb_dev_inst *usb;
234 unsigned char cmd[2];
236 if (sdi->status != SR_ST_ACTIVE)
237 return SR_ERR_DEV_CLOSED;
243 devc->num_samples = 0;
244 devc->packet_len = 0;
246 /* Configure serial port parameters on USB-UART interface
247 * chip inside the device (just baudrate 2400 actually). */
250 ret = libusb_control_transfer(usb->devhdl, 0x21, 0x09, 0x0300, 0x00,
253 sr_dbg("Failed to configure CH9325: %s", libusb_error_name(ret));
257 std_session_send_df_header(sdi);
259 if (!(devc->xfer = libusb_alloc_transfer(0)))
262 /* Length of payload to follow. */
264 if (devc->data_source == DATA_SOURCE_LIVE)
265 cmd[1] = CMD_GET_LIVE;
267 cmd[1] = CMD_GET_STORED;
269 ret = libusb_bulk_transfer(usb->devhdl, EP_OUT, cmd, 2, &len, 5);
270 if (ret != 0 || len != 2) {
271 sr_dbg("Failed to start acquisition: %s", libusb_error_name(ret));
272 libusb_free_transfer(devc->xfer);
276 libusb_fill_bulk_transfer(devc->xfer, usb->devhdl, EP_IN, devc->buf,
277 8, uni_t_ut32x_receive_transfer, (void *)sdi, 15);
278 if (libusb_submit_transfer(devc->xfer) != 0) {
279 libusb_free_transfer(devc->xfer);
283 usb_source_add(sdi->session, drvc->sr_ctx, 10,
284 uni_t_ut32x_handle_events, (void *)sdi);
289 static int dev_acquisition_stop(struct sr_dev_inst *sdi)
291 if (sdi->status != SR_ST_ACTIVE)
292 return SR_ERR_DEV_CLOSED;
294 /* Signal USB transfer handler to clean up and stop. */
295 sdi->status = SR_ST_STOPPING;
300 static struct sr_dev_driver uni_t_ut32x_driver_info = {
301 .name = "uni-t-ut32x",
302 .longname = "UNI-T UT32x",
305 .cleanup = std_cleanup,
307 .dev_list = std_dev_list,
309 .config_get = config_get,
310 .config_set = config_set,
311 .config_list = config_list,
312 .dev_open = dev_open,
313 .dev_close = dev_close,
314 .dev_acquisition_start = dev_acquisition_start,
315 .dev_acquisition_stop = dev_acquisition_stop,
318 SR_REGISTER_DEV_DRIVER(uni_t_ut32x_driver_info);