2 * This file is part of the libsigrok project.
4 * Copyright (C) 2012 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/>.
25 #include <libsigrok/libsigrok.h>
26 #include "libsigrok-internal.h"
29 #define VICTOR_VID 0x1244
30 #define VICTOR_PID 0xd237
31 #define VICTOR_INTERFACE 0
32 #define VICTOR_ENDPOINT (LIBUSB_ENDPOINT_IN | 1)
34 static const uint32_t scanopts[] = {
38 static const uint32_t drvopts[] = {
42 static const uint32_t devopts[] = {
44 SR_CONF_LIMIT_SAMPLES | SR_CONF_SET,
45 SR_CONF_LIMIT_MSEC | SR_CONF_SET,
46 SR_CONF_CONN | SR_CONF_GET,
49 static GSList *scan(struct sr_dev_driver *di, GSList *options)
51 struct drv_context *drvc;
52 struct dev_context *devc;
53 struct sr_dev_inst *sdi;
54 struct libusb_device_descriptor des;
55 libusb_device **devlist;
58 char connection_id[64];
65 libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
66 for (i = 0; devlist[i]; i++) {
67 libusb_get_device_descriptor(devlist[i], &des);
69 if (des.idVendor != VICTOR_VID || des.idProduct != VICTOR_PID)
72 usb_get_port_path(devlist[i], connection_id, sizeof(connection_id));
74 sdi = g_malloc0(sizeof(struct sr_dev_inst));
75 sdi->status = SR_ST_INACTIVE;
76 sdi->vendor = g_strdup("Victor");
77 sdi->connection_id = g_strdup(connection_id);
78 devc = g_malloc0(sizeof(struct dev_context));
79 sr_sw_limits_init(&devc->limits);
82 sr_channel_new(sdi, 0, SR_CHANNEL_ANALOG, TRUE, "P1");
83 sdi->conn = sr_usb_dev_inst_new(libusb_get_bus_number(devlist[i]),
84 libusb_get_device_address(devlist[i]), NULL);
85 sdi->inst_type = SR_INST_USB;
87 devices = g_slist_append(devices, sdi);
89 libusb_free_device_list(devlist, 1);
91 return std_scan_complete(di, devices);
94 static int dev_open(struct sr_dev_inst *sdi)
96 struct sr_dev_driver *di = sdi->driver;
97 struct drv_context *drvc = di->context;
98 struct sr_usb_dev_inst *usb;
103 ret = sr_usb_open(drvc->sr_ctx->libusb_ctx, usb);
107 if (libusb_kernel_driver_active(usb->devhdl, 0) == 1) {
108 if ((ret = libusb_detach_kernel_driver(usb->devhdl, 0)) < 0) {
109 sr_err("Failed to detach kernel driver: %s.",
110 libusb_error_name(ret));
115 if ((ret = libusb_claim_interface(usb->devhdl,
116 VICTOR_INTERFACE))) {
117 sr_err("Failed to claim interface: %s.", libusb_error_name(ret));
124 static int dev_close(struct sr_dev_inst *sdi)
126 struct sr_usb_dev_inst *usb;
133 libusb_release_interface(usb->devhdl, VICTOR_INTERFACE);
134 libusb_close(usb->devhdl);
140 static int config_get(uint32_t key, GVariant **data,
141 const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
143 struct dev_context *devc = sdi->priv;
144 struct sr_usb_dev_inst *usb;
151 if (!sdi || !sdi->conn)
154 snprintf(str, 128, "%d.%d", usb->bus, usb->address);
155 *data = g_variant_new_string(str);
157 case SR_CONF_LIMIT_SAMPLES:
158 case SR_CONF_LIMIT_MSEC:
159 return sr_sw_limits_config_get(&devc->limits, key, data);
167 static int config_set(uint32_t key, GVariant *data,
168 const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
170 struct dev_context *devc;
176 return sr_sw_limits_config_set(&devc->limits, key, data);
179 static int config_list(uint32_t key, GVariant **data,
180 const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
182 return STD_CONFIG_LIST(key, data, sdi, cg, scanopts, drvopts, devopts);
185 static void LIBUSB_CALL receive_transfer(struct libusb_transfer *transfer)
187 struct dev_context *devc;
188 struct sr_dev_inst *sdi;
191 sdi = transfer->user_data;
193 if (transfer->status == LIBUSB_TRANSFER_NO_DEVICE) {
194 /* USB device was unplugged. */
195 sr_dev_acquisition_stop(sdi);
196 } else if (transfer->status == LIBUSB_TRANSFER_COMPLETED) {
197 sr_dbg("Got %d-byte packet.", transfer->actual_length);
198 if (transfer->actual_length == DMM_DATA_SIZE) {
199 victor_dmm_receive_data(sdi, transfer->buffer);
200 if (sr_sw_limits_check(&devc->limits))
201 sr_dev_acquisition_stop(sdi);
204 /* Anything else is either an error or a timeout, which is fine:
205 * we were just going to send another transfer request anyway. */
207 if (sdi->status == SR_ST_ACTIVE) {
208 /* Send the same request again. */
209 if ((ret = libusb_submit_transfer(transfer) != 0)) {
210 sr_err("Unable to resubmit transfer: %s.",
211 libusb_error_name(ret));
212 g_free(transfer->buffer);
213 libusb_free_transfer(transfer);
214 sr_dev_acquisition_stop(sdi);
217 /* This was the last transfer we're going to receive, so
219 g_free(transfer->buffer);
220 libusb_free_transfer(transfer);
224 static int handle_events(int fd, int revents, void *cb_data)
226 struct dev_context *devc;
227 struct drv_context *drvc;
228 struct sr_dev_inst *sdi;
229 struct sr_dev_driver *di;
240 if (sr_sw_limits_check(&devc->limits))
241 sr_dev_acquisition_stop(sdi);
243 if (sdi->status == SR_ST_STOPPING) {
244 usb_source_remove(sdi->session, drvc->sr_ctx);
246 std_session_send_df_end(sdi);
249 memset(&tv, 0, sizeof(struct timeval));
250 libusb_handle_events_timeout_completed(drvc->sr_ctx->libusb_ctx, &tv,
256 static int dev_acquisition_start(const struct sr_dev_inst *sdi)
258 struct sr_dev_driver *di = sdi->driver;
259 struct drv_context *drvc = di->context;
260 struct sr_usb_dev_inst *usb;
261 struct libusb_transfer *transfer;
267 std_session_send_df_header(sdi);
269 usb_source_add(sdi->session, drvc->sr_ctx, 100,
270 handle_events, (void *)sdi);
272 buf = g_malloc(DMM_DATA_SIZE);
273 transfer = libusb_alloc_transfer(0);
274 /* Each transfer request gets 100ms to arrive before it's restarted.
275 * The device only sends 1 transfer/second no matter how many
276 * times you ask, but we want to keep step with the USB events
278 libusb_fill_interrupt_transfer(transfer, usb->devhdl,
279 VICTOR_ENDPOINT, buf, DMM_DATA_SIZE, receive_transfer,
280 (struct sr_dev_inst *)sdi, 100);
281 if ((ret = libusb_submit_transfer(transfer) != 0)) {
282 sr_err("Unable to submit transfer: %s.", libusb_error_name(ret));
283 libusb_free_transfer(transfer);
291 static int dev_acquisition_stop(struct sr_dev_inst *sdi)
293 sdi->status = SR_ST_STOPPING;
298 static struct sr_dev_driver victor_dmm_driver_info = {
299 .name = "victor-dmm",
300 .longname = "Victor DMMs",
303 .cleanup = std_cleanup,
305 .dev_list = std_dev_list,
306 .dev_clear = std_dev_clear,
307 .config_get = config_get,
308 .config_set = config_set,
309 .config_list = config_list,
310 .dev_open = dev_open,
311 .dev_close = dev_close,
312 .dev_acquisition_start = dev_acquisition_start,
313 .dev_acquisition_stop = dev_acquisition_stop,
316 SR_REGISTER_DEV_DRIVER(victor_dmm_driver_info);