]> sigrok.org Git - libsigrok.git/blame - src/hardware/uni-t-ut32x/api.c
Add sr_dev_acquisition_stop(), factor out SR_ERR_DEV_CLOSED check.
[libsigrok.git] / src / hardware / uni-t-ut32x / api.c
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1/*
2 * This file is part of the libsigrok project.
3 *
4 * Copyright (C) 2013 Bert Vermeulen <bert@biot.com>
5 *
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.
10 *
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.
15 *
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/>.
18 */
19
6ec6c43b 20#include <config.h>
6513f97f 21#include <string.h>
515ab088 22#include "protocol.h"
6513f97f 23
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24static const uint32_t scanopts[] = {
25 SR_CONF_CONN,
26};
27
f254bc4b 28static const uint32_t devopts[] = {
6513f97f 29 SR_CONF_THERMOMETER,
6513f97f 30 SR_CONF_CONTINUOUS,
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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,
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33};
34
0f34cb47
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35static const char *channel_names[] = {
36 "T1", "T2", "T1-T2",
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37};
38
39static const char *data_sources[] = {
40 "Live",
41 "Memory",
42};
43
4f840ce9 44static GSList *scan(struct sr_dev_driver *di, GSList *options)
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45{
46 struct drv_context *drvc;
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47 struct dev_context *devc;
48 struct sr_dev_inst *sdi;
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49 struct sr_config *src;
50 GSList *usb_devices, *devices, *l;
07ffa5b3 51 unsigned int i;
6513f97f 52 const char *conn;
3877dde4 53
41812aca 54 drvc = di->context;
3877dde4 55
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56 conn = NULL;
57 for (l = options; l; l = l->next) {
58 src = l->data;
59 switch (src->key) {
60 case SR_CONF_CONN:
61 conn = g_variant_get_string(src->data, NULL);
62 break;
63 }
64 }
65 if (!conn)
66 return NULL;
67
68 devices = NULL;
e196cb61 69 if ((usb_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn))) {
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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) {
aac29cc1 73 sdi = g_malloc0(sizeof(struct sr_dev_inst));
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74 sdi->status = SR_ST_INACTIVE;
75 sdi->vendor = g_strdup(VENDOR);
76 sdi->model = g_strdup(MODEL);
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77 sdi->inst_type = SR_INST_USB;
78 sdi->conn = l->data;
07ffa5b3 79 for (i = 0; i < ARRAY_SIZE(channel_names); i++)
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80 sr_channel_new(sdi, i, SR_CHANNEL_ANALOG, TRUE,
81 channel_names[i]);
f57d8ffe 82 devc = g_malloc0(sizeof(struct dev_context));
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83 sdi->priv = devc;
84 devc->limit_samples = 0;
85 devc->data_source = DEFAULT_DATA_SOURCE;
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86 devices = g_slist_append(devices, sdi);
87 }
88 g_slist_free(usb_devices);
89 } else
90 g_slist_free_full(usb_devices, g_free);
3877dde4 91
15a5bfe4 92 return std_scan_complete(di, devices);
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93}
94
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95static int dev_open(struct sr_dev_inst *sdi)
96{
4f840ce9 97 struct sr_dev_driver *di = sdi->driver;
efa98402 98 struct drv_context *drvc = di->context;
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99 struct sr_usb_dev_inst *usb;
100 int ret;
101
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102 usb = sdi->conn;
103
104 if (sr_usb_open(drvc->sr_ctx->libusb_ctx, usb) != SR_OK)
105 return SR_ERR;
106
107/*
f3f19d11 108 * The libusb 1.0.9 Darwin backend is broken: it can report a kernel
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109 * driver being active, but detaching it always returns an error.
110 */
111#if !defined(__APPLE__)
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112 if (libusb_kernel_driver_active(usb->devhdl, USB_INTERFACE) == 1) {
113 if ((ret = libusb_detach_kernel_driver(usb->devhdl, USB_INTERFACE)) < 0) {
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114 sr_err("failed to detach kernel driver: %s",
115 libusb_error_name(ret));
116 return SR_ERR;
117 }
118 }
119#endif
3877dde4 120
d6ff054a 121 if ((ret = libusb_set_configuration(usb->devhdl, USB_CONFIGURATION))) {
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122 sr_err("Failed to set configuration: %s.", libusb_error_name(ret));
123 return SR_ERR;
124 }
3877dde4 125
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126 if ((ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE))) {
127 sr_err("Failed to claim interface: %s.", libusb_error_name(ret));
128 return SR_ERR;
129 }
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130 sdi->status = SR_ST_ACTIVE;
131
6513f97f 132 return ret;
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133}
134
135static int dev_close(struct sr_dev_inst *sdi)
136{
6513f97f 137 struct sr_usb_dev_inst *usb;
3877dde4 138
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139 usb = sdi->conn;
140 if (!usb->devhdl)
d9251a2c 141 /* Nothing to do. */
6513f97f 142 return SR_OK;
3877dde4 143
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144 libusb_release_interface(usb->devhdl, USB_INTERFACE);
145 libusb_close(usb->devhdl);
146 usb->devhdl = NULL;
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147 sdi->status = SR_ST_INACTIVE;
148
149 return SR_OK;
150}
151
584560f1 152static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
53b4680f 153 const struct sr_channel_group *cg)
3877dde4 154{
6513f97f 155 struct dev_context *devc;
3877dde4 156
53b4680f 157 (void)cg;
d3c74a6f 158
6513f97f 159 devc = sdi->priv;
3877dde4 160 switch (key) {
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161 case SR_CONF_LIMIT_SAMPLES:
162 *data = g_variant_new_uint64(devc->limit_samples);
163 break;
164 case SR_CONF_DATA_SOURCE:
165 if (devc->data_source == DATA_SOURCE_LIVE)
166 *data = g_variant_new_string("Live");
167 else
168 *data = g_variant_new_string("Memory");
169 break;
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170 default:
171 return SR_ERR_NA;
172 }
173
6513f97f 174 return SR_OK;
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175}
176
584560f1 177static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi,
53b4680f 178 const struct sr_channel_group *cg)
3877dde4 179{
6513f97f 180 struct dev_context *devc;
6513f97f 181 const char *tmp_str;
3877dde4 182
53b4680f 183 (void)cg;
d3c74a6f 184
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185 if (sdi->status != SR_ST_ACTIVE)
186 return SR_ERR_DEV_CLOSED;
187
6513f97f 188 devc = sdi->priv;
dcd438ee 189
3877dde4 190 switch (key) {
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191 case SR_CONF_LIMIT_SAMPLES:
192 devc->limit_samples = g_variant_get_uint64(data);
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193 break;
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;
200 else
201 return SR_ERR;
202 break;
3877dde4 203 default:
dcd438ee 204 return SR_ERR_NA;
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205 }
206
dcd438ee 207 return SR_OK;
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208}
209
584560f1 210static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
53b4680f 211 const struct sr_channel_group *cg)
3877dde4 212{
3877dde4 213 (void)sdi;
53b4680f 214 (void)cg;
3877dde4 215
3877dde4 216 switch (key) {
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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));
220 break;
6513f97f 221 case SR_CONF_DEVICE_OPTIONS:
584560f1 222 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
f254bc4b 223 devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
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224 break;
225 case SR_CONF_DATA_SOURCE:
226 *data = g_variant_new_strv(data_sources, ARRAY_SIZE(data_sources));
227 break;
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228 default:
229 return SR_ERR_NA;
230 }
231
6513f97f 232 return SR_OK;
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233}
234
695dc859 235static int dev_acquisition_start(const struct sr_dev_inst *sdi)
3877dde4 236{
4f840ce9 237 struct sr_dev_driver *di = sdi->driver;
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238 struct drv_context *drvc;
239 struct dev_context *devc;
240 struct sr_usb_dev_inst *usb;
6c60facc 241 int len, ret;
6513f97f 242 unsigned char cmd[2];
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243
244 if (sdi->status != SR_ST_ACTIVE)
245 return SR_ERR_DEV_CLOSED;
246
41812aca 247 drvc = di->context;
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248 devc = sdi->priv;
249 usb = sdi->conn;
250
6513f97f 251 devc->num_samples = 0;
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252 devc->packet_len = 0;
253
254 /* Configure serial port parameters on USB-UART interface
255 * chip inside the device (just baudrate 2400 actually). */
256 cmd[0] = 0x09;
257 cmd[1] = 0x60;
258 ret = libusb_control_transfer(usb->devhdl, 0x21, 0x09, 0x0300, 0x00,
259 cmd, 2, 5);
260 if (ret != 2) {
261 sr_dbg("Failed to configure CH9325: %s", libusb_error_name(ret));
262 return SR_ERR;
263 }
6513f97f 264
bee2b016 265 std_session_send_df_header(sdi);
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266
267 if (!(devc->xfer = libusb_alloc_transfer(0)))
268 return SR_ERR;
269
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270 /* Length of payload to follow. */
271 cmd[0] = 0x01;
272 if (devc->data_source == DATA_SOURCE_LIVE)
273 cmd[1] = CMD_GET_LIVE;
274 else
275 cmd[1] = CMD_GET_STORED;
276
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);
281 return SR_ERR;
282 }
283
284 libusb_fill_bulk_transfer(devc->xfer, usb->devhdl, EP_IN, devc->buf,
d6ff054a 285 8, uni_t_ut32x_receive_transfer, (void *)sdi, 15);
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286 if (libusb_submit_transfer(devc->xfer) != 0) {
287 libusb_free_transfer(devc->xfer);
288 return SR_ERR;
289 }
3877dde4 290
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291 usb_source_add(sdi->session, drvc->sr_ctx, 10,
292 uni_t_ut32x_handle_events, (void *)sdi);
d6ff054a 293
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294 return SR_OK;
295}
296
695dc859 297static int dev_acquisition_stop(struct sr_dev_inst *sdi)
3877dde4 298{
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299 /* Signal USB transfer handler to clean up and stop. */
300 sdi->status = SR_ST_STOPPING;
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301
302 return SR_OK;
303}
304
dd5c48a6 305static struct sr_dev_driver uni_t_ut32x_driver_info = {
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306 .name = "uni-t-ut32x",
307 .longname = "UNI-T UT32x",
308 .api_version = 1,
c2fdcc25 309 .init = std_init,
700d6b64 310 .cleanup = std_cleanup,
3877dde4 311 .scan = scan,
c01bf34c 312 .dev_list = std_dev_list,
a6630742 313 .dev_clear = NULL,
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314 .config_get = config_get,
315 .config_set = config_set,
316 .config_list = config_list,
317 .dev_open = dev_open,
318 .dev_close = dev_close,
319 .dev_acquisition_start = dev_acquisition_start,
320 .dev_acquisition_stop = dev_acquisition_stop,
41812aca 321 .context = NULL,
3877dde4 322};
dd5c48a6 323SR_REGISTER_DEV_DRIVER(uni_t_ut32x_driver_info);