src/hardware/gwinstek-gpd/api.c

   1 /*
   2  * This file is part of the libsigrok project.
   3  *
   4  * Copyright (C) 2018 Bastian Schmitz <bastian.schmitz@udo.edu>
   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
  20 #include <config.h>
  21 #include <string.h>
  22 #include "protocol.h"
  23
  24 static const uint32_t scanopts[] = {
  25         SR_CONF_CONN,
  26         SR_CONF_SERIALCOMM,
  27 };
  28
  29 static const uint32_t drvopts[] = {
  30         SR_CONF_POWER_SUPPLY,
  31 };
  32
  33 static const uint32_t devopts[] = {
  34         SR_CONF_CONTINUOUS,
  35         SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET,
  36         SR_CONF_LIMIT_MSEC | SR_CONF_GET | SR_CONF_SET,
  37         SR_CONF_CHANNEL_CONFIG | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
  38         SR_CONF_ENABLED | SR_CONF_GET | SR_CONF_SET,
  39 };
  40
  41 static const uint32_t devopts_cg[] = {
  42         SR_CONF_VOLTAGE | SR_CONF_GET,
  43         SR_CONF_VOLTAGE_TARGET | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
  44         SR_CONF_CURRENT | SR_CONF_GET,
  45         SR_CONF_CURRENT_LIMIT | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
  46 };
  47
  48 static const char *channel_modes[] = {
  49         "Independent",
  50 };
  51
  52 static const struct gpd_model models[] = {
  53         { GPD_2303S, "GPD-2303S",
  54                 CHANMODE_INDEPENDENT,
  55                 2,
  56                 {
  57                         /* Channel 1 */
  58                         { { 0, 30, 0.001 }, { 0, 3, 0.001 } },
  59                         /* Channel 2 */
  60                         { { 0, 30, 0.001 }, { 0, 3, 0.001 } },
  61                 },
  62         },
  63 };
  64
  65 static GSList *scan(struct sr_dev_driver *di, GSList *options)
  66 {
  67         const char *conn, *serialcomm;
  68         const struct gpd_model *model;
  69         const struct sr_config *src;
  70         struct sr_channel *ch;
  71         struct sr_channel_group *cg;
  72         GSList *l;
  73         struct sr_serial_dev_inst *serial;
  74         struct sr_dev_inst *sdi;
  75         char reply[50];
  76         unsigned int i;
  77         struct dev_context *devc;
  78         char channel[10];
  79         GRegex *regex;
  80         GMatchInfo *match_info;
  81         unsigned int cc_cv_ch1, cc_cv_ch2, track1, track2, beep, baud1, baud2;
  82
  83         serial = NULL;
  84         match_info = NULL;
  85         regex = NULL;
  86         conn = NULL;
  87         serialcomm = NULL;
  88
  89         for (l = options; l; l = l->next) {
  90                 src = l->data;
  91                 switch (src->key) {
  92                 case SR_CONF_CONN:
  93                         conn = g_variant_get_string(src->data, NULL);
  94                         break;
  95                 case SR_CONF_SERIALCOMM:
  96                         serialcomm = g_variant_get_string(src->data, NULL);
  97                         break;
  98                 }
  99         }
 100
 101         if (!conn)
 102                 return NULL;
 103         if (!serialcomm)
 104                 serialcomm = "115200/8n1";
 105         sr_info("Probing serial port %s.", conn);
 106         serial = sr_serial_dev_inst_new(conn, serialcomm);
 107         if (serial_open(serial, SERIAL_RDWR) != SR_OK)
 108                 return NULL;
 109
 110         serial_flush(serial);
 111         gpd_send_cmd(serial, "*IDN?\n");
 112         if (gpd_receive_reply(serial, reply, sizeof(reply)) != SR_OK) {
 113                 sr_err("Device did not reply.");
 114                 goto error;
 115         }
 116         serial_flush(serial);
 117
 118         /*
 119          * Returned identification string is for example:
 120          * "GW INSTEK,GPD-2303S,SN:ER915277,V2.10"
 121          */
 122         regex = g_regex_new("GW INSTEK,(.+),SN:(.+),(V.+)", 0, 0, NULL);
 123         if (!g_regex_match(regex, reply, 0, &match_info)) {
 124                 sr_err("Unsupported model '%s'.", reply);
 125                 goto error;
 126         }
 127
 128         model = NULL;
 129         for (i = 0; i < ARRAY_SIZE(models); i++) {
 130                 if (!strcmp(g_match_info_fetch(match_info, 1), models[i].name)) {
 131                         model = &models[i];
 132                         break;
 133                 }
 134         }
 135         if (!model) {
 136                 sr_err("Unsupported model '%s'.", reply);
 137                 goto error;
 138         }
 139
 140         sr_info("Detected model '%s'.", model->name);
 141
 142         sdi = g_malloc0(sizeof(struct sr_dev_inst));
 143         sdi->status = SR_ST_INACTIVE;
 144         sdi->vendor = g_strdup("GW Instek");
 145         sdi->model = g_strdup(model->name);
 146         sdi->inst_type = SR_INST_SERIAL;
 147         sdi->conn = serial;
 148
 149         for (i = 0; i < model->num_channels; i++) {
 150                 snprintf(channel, sizeof(channel), "CH%d", i + 1);
 151                 ch = sr_channel_new(sdi, i, SR_CHANNEL_ANALOG, TRUE, channel);
 152                 cg = g_malloc(sizeof(struct sr_channel_group));
 153                 cg->name = g_strdup(channel);
 154                 cg->channels = g_slist_append(NULL, ch);
 155                 cg->priv = NULL;
 156                 sdi->channel_groups = g_slist_append(sdi->channel_groups, cg);
 157         }
 158
 159         devc = g_malloc0(sizeof(struct dev_context));
 160         sr_sw_limits_init(&devc->limits);
 161         devc->model = model;
 162         devc->config = g_malloc0(sizeof(struct per_channel_config)
 163                                  * model->num_channels);
 164         sdi->priv = devc;
 165
 166         serial_flush(serial);
 167         gpd_send_cmd(serial, "STATUS?\n");
 168         gpd_receive_reply(serial, reply, sizeof(reply));
 169
 170         if (sscanf(reply, "%1u%1u%1u%1u%1u%1u%1u%1u", &cc_cv_ch1,
 171                         &cc_cv_ch2, &track1, &track2, &beep,
 172                         &devc->output_enabled, &baud1, &baud2) != 8) {
 173                 sr_err("Invalid reply to STATUS: '%s'.", reply);
 174                 goto error;
 175         }
 176
 177         for (i = 0; i < model->num_channels; ++i) {
 178                 gpd_send_cmd(serial, "ISET%d?\n", i + 1);
 179                 gpd_receive_reply(serial, reply, sizeof(reply));
 180                 if (sscanf(reply, "%f", &devc->config[i].output_current_max) != 1) {
 181                         sr_err("Invalid reply to ISETn?: '%s'.", reply);
 182                         goto error;
 183                 }
 184
 185                 gpd_send_cmd(serial, "VSET%d?\n", i + 1);
 186                 gpd_receive_reply(serial, reply, sizeof(reply));
 187                 if (sscanf(reply, "%f", &devc->config[i].output_voltage_max) != 1) {
 188                         sr_err("Invalid reply to VSETn?: '%s'.", reply);
 189                         goto error;
 190                 }
 191                 gpd_send_cmd(serial, "IOUT%d?\n", i + 1);
 192                 gpd_receive_reply(serial, reply, sizeof(reply));
 193                 if (sscanf(reply, "%f", &devc->config[i].output_current_last) != 1) {
 194                         sr_err("Invalid reply to IOUTn?: '%s'.", reply);
 195                         goto error;
 196                 }
 197                 gpd_send_cmd(serial, "VOUT%d?\n", i + 1);
 198                 gpd_receive_reply(serial, reply, sizeof(reply));
 199                 if (sscanf(reply, "%f", &devc->config[i].output_voltage_last) != 1) {
 200                         sr_err("Invalid reply to VOUTn?: '%s'.", reply);
 201                         goto error;
 202                 }
 203         }
 204
 205         serial_close(serial);
 206
 207         return std_scan_complete(di, g_slist_append(NULL, sdi));
 208
 209 error:
 210         if (match_info)
 211                 g_match_info_free(match_info);
 212         if (regex)
 213                 g_regex_unref(regex);
 214         if (serial)
 215                 serial_close(serial);
 216
 217         return NULL;
 218 }
 219
 220 static int config_get(uint32_t key, GVariant **data,
 221         const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 222 {
 223         int channel;
 224         const struct dev_context *devc;
 225         const struct sr_channel *ch;
 226
 227         if (!sdi)
 228                 return SR_ERR_ARG;
 229
 230         devc = sdi->priv;
 231
 232         if (!cg) {
 233                 switch (key) {
 234                 case SR_CONF_CHANNEL_CONFIG:
 235                         *data = g_variant_new_string(
 236                                 channel_modes[devc->channel_mode]);
 237                         break;
 238                 case SR_CONF_ENABLED:
 239                         *data = g_variant_new_boolean(devc->output_enabled);
 240                         break;
 241                 default:
 242                         return SR_ERR_NA;
 243                 }
 244         } else {
 245                 ch = cg->channels->data;
 246                 channel = ch->index;
 247                 switch (key) {
 248                 case SR_CONF_VOLTAGE:
 249                         *data = g_variant_new_double(
 250                                 devc->config[channel].output_voltage_last);
 251                         break;
 252                 case SR_CONF_VOLTAGE_TARGET:
 253                         *data = g_variant_new_double(
 254                                 devc->config[channel].output_voltage_max);
 255                         break;
 256                 case SR_CONF_CURRENT:
 257                         *data = g_variant_new_double(
 258                                 devc->config[channel].output_current_last);
 259                         break;
 260                 case SR_CONF_CURRENT_LIMIT:
 261                         *data = g_variant_new_double(
 262                                 devc->config[channel].output_current_max);
 263                         break;
 264                 default:
 265                         return SR_ERR_NA;
 266                 }
 267         }
 268
 269         return SR_OK;
 270 }
 271
 272 static int config_set(uint32_t key, GVariant *data,
 273         const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 274 {
 275         int ret, channel;
 276         const struct sr_channel *ch;
 277         double dval;
 278         gboolean bval;
 279         struct dev_context *devc;
 280
 281         devc = sdi->priv;
 282
 283         ret = SR_OK;
 284
 285         switch (key) {
 286         case SR_CONF_LIMIT_MSEC:
 287         case SR_CONF_LIMIT_SAMPLES:
 288                 return sr_sw_limits_config_set(&devc->limits, key, data);
 289         case SR_CONF_ENABLED:
 290                 bval = g_variant_get_boolean(data);
 291                 gpd_send_cmd(sdi->conn, "OUT%c\n", bval ? '1' : '0');
 292                 devc->output_enabled = bval;
 293                 break;
 294         case SR_CONF_VOLTAGE_TARGET:
 295                 ch = cg->channels->data;
 296                 channel = ch->index;
 297                 dval = g_variant_get_double(data);
 298                 if (dval < devc->model->channels[channel].voltage[0]
 299                     || dval > devc->model->channels[channel].voltage[1])
 300                         return SR_ERR_ARG;
 301                 gpd_send_cmd(sdi->conn, "VSET%d:%05.3lf\n", channel + 1, dval);
 302                 devc->config[channel].output_voltage_max = dval;
 303                 break;
 304         case SR_CONF_CURRENT_LIMIT:
 305                 ch = cg->channels->data;
 306                 channel = ch->index;
 307                 dval = g_variant_get_double(data);
 308                 if (dval < devc->model->channels[channel].current[0]
 309                     || dval > devc->model->channels[channel].current[1])
 310                         return SR_ERR_ARG;
 311                 gpd_send_cmd(sdi->conn, "ISET%d:%05.3lf\n", channel + 1, dval);
 312                 devc->config[channel].output_current_max = dval;
 313                 break;
 314         default:
 315                 ret = SR_ERR_NA;
 316                 break;
 317         }
 318
 319         return ret;
 320 }
 321
 322 static int config_list(uint32_t key, GVariant **data,
 323         const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 324 {
 325         const struct dev_context *devc;
 326         const struct sr_channel *ch;
 327         int channel;
 328
 329         devc = (sdi) ? sdi->priv : NULL;
 330
 331         if (!cg) {
 332                 switch (key) {
 333                 case SR_CONF_SCAN_OPTIONS:
 334                 case SR_CONF_DEVICE_OPTIONS:
 335                         return STD_CONFIG_LIST(key, data, sdi, cg, scanopts,
 336                                                drvopts, devopts);
 337                 case SR_CONF_CHANNEL_CONFIG:
 338                         *data = g_variant_new_strv(ARRAY_AND_SIZE(channel_modes));
 339                         break;
 340                 default:
 341                         return SR_ERR_NA;
 342                 }
 343         } else {
 344                 ch = cg->channels->data;
 345                 channel = ch->index;
 346
 347                 switch (key) {
 348                 case SR_CONF_DEVICE_OPTIONS:
 349                         *data = std_gvar_array_u32(ARRAY_AND_SIZE(devopts_cg));
 350                         break;
 351                 case SR_CONF_VOLTAGE_TARGET:
 352                         *data = std_gvar_min_max_step_array(
 353                                 devc->model->channels[channel].voltage);
 354                         break;
 355                 case SR_CONF_CURRENT_LIMIT:
 356                         *data = std_gvar_min_max_step_array(
 357                                 devc->model->channels[channel].current);
 358                         break;
 359                 default:
 360                         return SR_ERR_NA;
 361                 }
 362         }
 363
 364         return SR_OK;
 365 }
 366
 367 static int dev_acquisition_start(const struct sr_dev_inst *sdi)
 368 {
 369         struct dev_context *devc;
 370         struct sr_serial_dev_inst *serial;
 371
 372         devc = sdi->priv;
 373
 374         sr_sw_limits_acquisition_start(&devc->limits);
 375         std_session_send_df_header(sdi);
 376
 377         devc->reply_pending = FALSE;
 378         devc->req_sent_at = 0;
 379         serial = sdi->conn;
 380         serial_source_add(sdi->session, serial, G_IO_IN, 100,
 381                           gpd_receive_data, (void *)sdi);
 382
 383         return SR_OK;
 384 }
 385
 386 static struct sr_dev_driver gwinstek_gpd_driver_info = {
 387         .name = "gwinstek-gpd",
 388         .longname = "GW Instek GPD",
 389         .api_version = 1,
 390         .init = std_init,
 391         .cleanup = std_cleanup,
 392         .scan = scan,
 393         .dev_list = std_dev_list,
 394         .dev_clear = std_dev_clear,
 395         .config_get = config_get,
 396         .config_set = config_set,
 397         .config_list = config_list,
 398         .dev_open = std_serial_dev_open,
 399         .dev_close = std_serial_dev_close,
 400         .dev_acquisition_start = dev_acquisition_start,
 401         .dev_acquisition_stop = std_serial_dev_acquisition_stop,
 402         .context = NULL,
 403 };
 404 SR_REGISTER_DEV_DRIVER(gwinstek_gpd_driver_info);