src/hardware/arachnid-labs-re-load-pro/api.c

   1 /*
   2  * This file is part of the libsigrok project.
   3  *
   4  * Copyright (C) 2015-2016 Uwe Hermann <uwe@hermann-uwe.de>
   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 2 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 #define SERIALCOMM "115200/8n1"
  25
  26 #define CMD_VERSION "version\r\n"
  27 #define CMD_MONITOR "monitor 200\r\n"
  28 #define CMD_MONITOR_STOP "monitor 0\r\n"
  29
  30 static const uint32_t scanopts[] = {
  31         SR_CONF_CONN,
  32         SR_CONF_SERIALCOMM,
  33 };
  34
  35 static const uint32_t drvopts[] = {
  36         SR_CONF_ELECTRONIC_LOAD,
  37 };
  38
  39 static const uint32_t devopts[] = {
  40         SR_CONF_CONTINUOUS,
  41         SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET,
  42         SR_CONF_LIMIT_MSEC | SR_CONF_GET | SR_CONF_SET,
  43 };
  44
  45 static const uint32_t devopts_cg[] = {
  46         SR_CONF_ENABLED | SR_CONF_SET,
  47         SR_CONF_REGULATION | SR_CONF_GET | SR_CONF_LIST,
  48         SR_CONF_VOLTAGE | SR_CONF_GET,
  49         SR_CONF_CURRENT | SR_CONF_GET,
  50         SR_CONF_CURRENT_LIMIT | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
  51         SR_CONF_OVER_VOLTAGE_PROTECTION_ENABLED | SR_CONF_GET,
  52         SR_CONF_OVER_CURRENT_PROTECTION_ENABLED | SR_CONF_GET,
  53         SR_CONF_OVER_TEMPERATURE_PROTECTION | SR_CONF_GET,
  54         SR_CONF_OVER_TEMPERATURE_PROTECTION_ACTIVE | SR_CONF_GET,
  55         SR_CONF_UNDER_VOLTAGE_CONDITION | SR_CONF_GET,
  56         SR_CONF_UNDER_VOLTAGE_CONDITION_ACTIVE | SR_CONF_GET,
  57         SR_CONF_UNDER_VOLTAGE_CONDITION_THRESHOLD | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
  58 };
  59
  60 static const char *regulation[] = {
  61         /* CC mode only. */
  62         "CC",
  63 };
  64
  65 static GSList *scan(struct sr_dev_driver *di, GSList *options)
  66 {
  67         struct sr_dev_inst *sdi;
  68         struct dev_context *devc;
  69         struct sr_config *src;
  70         struct sr_serial_dev_inst *serial;
  71         struct sr_channel_group *cg;
  72         struct sr_channel *ch;
  73         GSList *l;
  74         int ret, len;
  75         const char *conn, *serialcomm;
  76         char buf[100];
  77         char *bufptr;
  78         double version;
  79
  80         conn = serialcomm = NULL;
  81         for (l = options; l; l = l->next) {
  82                 src = l->data;
  83                 switch (src->key) {
  84                 case SR_CONF_CONN:
  85                         conn = g_variant_get_string(src->data, NULL);
  86                         break;
  87                 case SR_CONF_SERIALCOMM:
  88                         serialcomm = g_variant_get_string(src->data, NULL);
  89                         break;
  90                 }
  91         }
  92         if (!conn)
  93                 return NULL;
  94         if (!serialcomm)
  95                 serialcomm = SERIALCOMM;
  96
  97         serial = sr_serial_dev_inst_new(conn, serialcomm);
  98
  99         if (serial_open(serial, SERIAL_RDWR) != SR_OK)
 100                 return NULL;
 101
 102         /*
 103          * First stop potentially running monitoring and wait for 50ms before
 104          * next command can be sent.
 105          */
 106         if (serial_write_blocking(serial, CMD_MONITOR_STOP,
 107                         strlen(CMD_MONITOR_STOP), serial_timeout(serial,
 108                         strlen(CMD_MONITOR_STOP))) < (int)strlen(CMD_MONITOR_STOP)) {
 109                 sr_dbg("Unable to write while probing for hardware.");
 110                 serial_close(serial);
 111                 return NULL;
 112         }
 113         g_usleep(50 * 1000);
 114
 115         if (serial_write_blocking(serial, CMD_VERSION,
 116                         strlen(CMD_VERSION), serial_timeout(serial,
 117                         strlen(CMD_VERSION))) < (int)strlen(CMD_VERSION)) {
 118                 sr_dbg("Unable to write while probing for hardware.");
 119                 serial_close(serial);
 120                 return NULL;
 121         }
 122
 123         memset(buf, 0, sizeof(buf));
 124         bufptr = buf;
 125         len = sizeof(buf);
 126         ret = serial_readline(serial, &bufptr, &len, 3000);
 127
 128         if (ret < 0 || len < 9 || strncmp((const char *)&buf, "version ", 8)) {
 129                 sr_dbg("Unable to probe version number.");
 130                 serial_close(serial);
 131                 return NULL;
 132         }
 133
 134         version = g_ascii_strtod(buf + 8, NULL);
 135         if (version < 1.10) {
 136                 sr_info("Firmware >= 1.10 required (got %1.2f).", version);
 137                 serial_close(serial);
 138                 return NULL;
 139         }
 140
 141         sdi = g_malloc0(sizeof(struct sr_dev_inst));
 142         sdi->status = SR_ST_INACTIVE;
 143         sdi->vendor = g_strdup("Arachnid Labs");
 144         sdi->model = g_strdup("Re:load Pro");
 145         sdi->version = g_strdup(buf + 8);
 146         sdi->inst_type = SR_INST_SERIAL;
 147         sdi->conn = serial;
 148
 149         cg = sr_channel_group_new(sdi, "1", NULL);
 150
 151         ch = sr_channel_new(sdi, 0, SR_CHANNEL_ANALOG, TRUE, "V");
 152         cg->channels = g_slist_append(cg->channels, ch);
 153
 154         ch = sr_channel_new(sdi, 1, SR_CHANNEL_ANALOG, TRUE, "I");
 155         cg->channels = g_slist_append(cg->channels, ch);
 156
 157         devc = g_malloc0(sizeof(struct dev_context));
 158         sr_sw_limits_init(&devc->limits);
 159         sdi->priv = devc;
 160
 161         serial_close(serial);
 162
 163         return std_scan_complete(di, g_slist_append(NULL, sdi));
 164 }
 165
 166 static int config_list(uint32_t key, GVariant **data,
 167         const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 168 {
 169         if (!cg) {
 170                 return STD_CONFIG_LIST(key, data, sdi, cg, scanopts, drvopts, devopts);
 171         } else {
 172                 switch (key) {
 173                 case SR_CONF_DEVICE_OPTIONS:
 174                         *data = std_gvar_array_u32(ARRAY_AND_SIZE(devopts_cg));
 175                         break;
 176                 case SR_CONF_REGULATION:
 177                         *data = std_gvar_array_str(ARRAY_AND_SIZE(regulation));
 178                         break;
 179                 case SR_CONF_CURRENT_LIMIT:
 180                         *data = std_gvar_min_max_step(0.0, 6.0, 0.001);
 181                         break;
 182                 case SR_CONF_UNDER_VOLTAGE_CONDITION_THRESHOLD:
 183                         *data = std_gvar_min_max_step(0.0, 60.0, 0.001);
 184                         break;
 185                 default:
 186                         return SR_ERR_NA;
 187                 }
 188         }
 189
 190         return SR_OK;
 191 }
 192
 193 static int config_get(uint32_t key, GVariant **data,
 194         const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 195 {
 196         struct dev_context *devc;
 197         float fvalue;
 198
 199         (void)cg;
 200
 201         devc = sdi->priv;
 202
 203         /*
 204          * These features/keys are not supported by the hardware:
 205          *  - SR_CONF_OVER_VOLTAGE_PROTECTION_ACTIVE
 206          *  - SR_CONF_OVER_VOLTAGE_PROTECTION_THRESHOLD
 207          *  - SR_CONF_OVER_CURRENT_PROTECTION_ACTIVE
 208          *  - SR_CONF_OVER_CURRENT_PROTECTION_THRESHOLD
 209          *  - SR_CONF_ENABLED (state cannot be queried, only set)
 210          */
 211
 212         switch (key) {
 213         case SR_CONF_LIMIT_SAMPLES:
 214         case SR_CONF_LIMIT_MSEC:
 215                 return sr_sw_limits_config_get(&devc->limits, key, data);
 216         case SR_CONF_REGULATION:
 217                 *data = g_variant_new_string("CC"); /* Always CC mode. */
 218                 break;
 219         case SR_CONF_VOLTAGE:
 220                 if (reloadpro_get_voltage_current(sdi, &fvalue, NULL) < 0)
 221                         return SR_ERR;
 222                 *data = g_variant_new_double(fvalue);
 223                 break;
 224         case SR_CONF_CURRENT:
 225                 if (reloadpro_get_voltage_current(sdi, NULL, &fvalue) < 0)
 226                         return SR_ERR;
 227                 *data = g_variant_new_double(fvalue);
 228                 break;
 229         case SR_CONF_CURRENT_LIMIT:
 230                 if (reloadpro_get_current_limit(sdi, &fvalue) == SR_OK)
 231                         *data = g_variant_new_double(fvalue);
 232                 break;
 233         case SR_CONF_OVER_VOLTAGE_PROTECTION_ENABLED:
 234                 *data = g_variant_new_boolean(TRUE); /* Always on. */
 235                 break;
 236         case SR_CONF_OVER_CURRENT_PROTECTION_ENABLED:
 237                 *data = g_variant_new_boolean(TRUE); /* Always on. */
 238                 break;
 239         case SR_CONF_OVER_TEMPERATURE_PROTECTION:
 240                 *data = g_variant_new_boolean(TRUE); /* Always on. */
 241                 break;
 242         case SR_CONF_OVER_TEMPERATURE_PROTECTION_ACTIVE:
 243                 *data = g_variant_new_boolean(devc->otp_active);
 244                 break;
 245         case SR_CONF_UNDER_VOLTAGE_CONDITION:
 246                 if (reloadpro_get_under_voltage_threshold(sdi, &fvalue) == SR_OK)
 247                         *data = g_variant_new_boolean(fvalue != 0.0);
 248                 break;
 249         case SR_CONF_UNDER_VOLTAGE_CONDITION_ACTIVE:
 250                 *data = g_variant_new_boolean(devc->uvc_active);
 251                 break;
 252         case SR_CONF_UNDER_VOLTAGE_CONDITION_THRESHOLD:
 253                 if (reloadpro_get_under_voltage_threshold(sdi, &fvalue) == SR_OK)
 254                         *data = g_variant_new_double(fvalue);
 255                 break;
 256         default:
 257                 return SR_ERR_NA;
 258         }
 259
 260         return SR_OK;
 261 }
 262
 263 static int config_set(uint32_t key, GVariant *data,
 264         const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 265 {
 266         struct dev_context *devc;
 267
 268         (void)cg;
 269
 270         devc = sdi->priv;
 271
 272         switch (key) {
 273         case SR_CONF_LIMIT_SAMPLES:
 274         case SR_CONF_LIMIT_MSEC:
 275                 return sr_sw_limits_config_set(&devc->limits, key, data);
 276         case SR_CONF_ENABLED:
 277                 return reloadpro_set_on_off(sdi, g_variant_get_boolean(data));
 278         case SR_CONF_CURRENT_LIMIT:
 279                 return reloadpro_set_current_limit(sdi, g_variant_get_double(data));
 280         case SR_CONF_UNDER_VOLTAGE_CONDITION_THRESHOLD:
 281                 return reloadpro_set_under_voltage_threshold(sdi,
 282                         g_variant_get_double(data));
 283         default:
 284                 return SR_ERR_NA;
 285         }
 286
 287         return SR_OK;
 288 }
 289
 290 static int dev_close(struct sr_dev_inst *sdi)
 291 {
 292         if (serial_write_blocking(sdi->conn, CMD_MONITOR_STOP,
 293                         strlen(CMD_MONITOR_STOP), serial_timeout(sdi->conn,
 294                         strlen(CMD_MONITOR_STOP))) < (int)strlen(CMD_MONITOR_STOP)) {
 295                 sr_dbg("Unable to stop monitoring.");
 296         }
 297
 298         return std_serial_dev_close(sdi);
 299 }
 300
 301 static int dev_acquisition_start(const struct sr_dev_inst *sdi)
 302 {
 303         int ret;
 304         struct dev_context *devc;
 305         struct sr_serial_dev_inst *serial;
 306
 307         devc = sdi->priv;
 308         devc->acquisition_running = TRUE;
 309
 310         serial = sdi->conn;
 311
 312         /* Send the 'monitor <ms>' command (doesn't have a reply). */
 313         if ((ret = serial_write_blocking(serial, CMD_MONITOR,
 314                         strlen(CMD_MONITOR), serial_timeout(serial,
 315                         strlen(CMD_MONITOR)))) < (int)strlen(CMD_MONITOR)) {
 316                 sr_err("Unable to send 'monitor' command: %d.", ret);
 317                 return SR_ERR;
 318         }
 319
 320         sr_sw_limits_acquisition_start(&devc->limits);
 321         std_session_send_df_header(sdi);
 322
 323         memset(devc->buf, 0, RELOADPRO_BUFSIZE);
 324         devc->buflen = 0;
 325
 326         g_mutex_init(&devc->acquisition_mutex);
 327
 328         serial_source_add(sdi->session, serial, G_IO_IN, 100,
 329                           reloadpro_receive_data, (void *)sdi);
 330
 331         return SR_OK;
 332 }
 333
 334 static int dev_acquisition_stop(struct sr_dev_inst *sdi)
 335 {
 336         struct dev_context *devc;
 337         int ret;
 338
 339         devc = sdi->priv;
 340         devc->acquisition_running = FALSE;
 341
 342         ret = std_serial_dev_acquisition_stop(sdi);
 343         g_mutex_clear(&devc->acquisition_mutex);
 344
 345         return ret;
 346 }
 347
 348 static struct sr_dev_driver arachnid_labs_re_load_pro_driver_info = {
 349         .name = "arachnid-labs-re-load-pro",
 350         .longname = "Arachnid Labs Re:load Pro",
 351         .api_version = 1,
 352         .init = std_init,
 353         .cleanup = std_cleanup,
 354         .scan = scan,
 355         .dev_list = std_dev_list,
 356         .dev_clear = std_dev_clear,
 357         .config_get = config_get,
 358         .config_set = config_set,
 359         .config_list = config_list,
 360         .dev_open = std_serial_dev_open,
 361         .dev_close = dev_close,
 362         .dev_acquisition_start = dev_acquisition_start,
 363         .dev_acquisition_stop = dev_acquisition_stop,
 364         .context = NULL,
 365 };
 366 SR_REGISTER_DEV_DRIVER(arachnid_labs_re_load_pro_driver_info);