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
  29 static const uint32_t scanopts[] = {
  30         SR_CONF_CONN,
  31         SR_CONF_SERIALCOMM,
  32 };
  33
  34 static const uint32_t drvopts[] = {
  35         SR_CONF_ELECTRONIC_LOAD,
  36 };
  37
  38 static const uint32_t devopts[] = {
  39         SR_CONF_CONTINUOUS,
  40         SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET,
  41         SR_CONF_LIMIT_MSEC | SR_CONF_GET | SR_CONF_SET,
  42 };
  43
  44 static const uint32_t devopts_cg[] = {
  45         SR_CONF_ENABLED | SR_CONF_SET,
  46         SR_CONF_REGULATION | SR_CONF_GET,
  47         SR_CONF_VOLTAGE | SR_CONF_GET,
  48         SR_CONF_CURRENT | SR_CONF_GET,
  49         SR_CONF_CURRENT_LIMIT | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
  50         SR_CONF_OVER_VOLTAGE_PROTECTION_ENABLED | SR_CONF_GET,
  51         SR_CONF_OVER_CURRENT_PROTECTION_ENABLED | SR_CONF_GET,
  52         SR_CONF_OVER_TEMPERATURE_PROTECTION | SR_CONF_GET,
  53         SR_CONF_OVER_TEMPERATURE_PROTECTION_ACTIVE | SR_CONF_GET,
  54         SR_CONF_UNDER_VOLTAGE_CONDITION | SR_CONF_GET,
  55         SR_CONF_UNDER_VOLTAGE_CONDITION_ACTIVE | SR_CONF_GET,
  56 };
  57
  58 static GSList *scan(struct sr_dev_driver *di, GSList *options)
  59 {
  60         struct sr_dev_inst *sdi;
  61         struct dev_context *devc;
  62         struct sr_config *src;
  63         struct sr_serial_dev_inst *serial;
  64         struct sr_channel_group *cg;
  65         struct sr_channel *ch;
  66         GSList *l;
  67         int ret, len;
  68         const char *conn, *serialcomm;
  69         char buf[100];
  70         char *bufptr;
  71         double version;
  72
  73         conn = serialcomm = NULL;
  74         for (l = options; l; l = l->next) {
  75                 src = l->data;
  76                 switch (src->key) {
  77                 case SR_CONF_CONN:
  78                         conn = g_variant_get_string(src->data, NULL);
  79                         break;
  80                 case SR_CONF_SERIALCOMM:
  81                         serialcomm = g_variant_get_string(src->data, NULL);
  82                         break;
  83                 }
  84         }
  85         if (!conn)
  86                 return NULL;
  87         if (!serialcomm)
  88                 serialcomm = SERIALCOMM;
  89
  90         serial = sr_serial_dev_inst_new(conn, serialcomm);
  91
  92         if (serial_open(serial, SERIAL_RDWR) != SR_OK)
  93                 return NULL;
  94
  95         serial_flush(serial);
  96
  97         if (serial_write_blocking(serial, CMD_VERSION,
  98                         strlen(CMD_VERSION), serial_timeout(serial,
  99                         strlen(CMD_VERSION))) < (int)strlen(CMD_VERSION)) {
 100                 sr_dbg("Unable to write while probing for hardware.");
 101                 serial_close(serial);
 102                 return NULL;
 103         }
 104
 105         memset(buf, 0, sizeof(buf));
 106         bufptr = buf;
 107         len = sizeof(buf);
 108         ret = serial_readline(serial, &bufptr, &len, 3000);
 109
 110         if (ret < 0 || len < 9 || strncmp((const char *)&buf, "version ", 8)) {
 111                 sr_dbg("Unable to probe version number.");
 112                 serial_close(serial);
 113                 return NULL;
 114         }
 115
 116         version = g_ascii_strtod(buf + 8, NULL);
 117         if (version < 1.10) {
 118                 sr_info("Firmware >= 1.10 required (got %1.2f).", version);
 119                 serial_close(serial);
 120                 return NULL;
 121         }
 122
 123         sdi = g_malloc0(sizeof(struct sr_dev_inst));
 124         sdi->status = SR_ST_INACTIVE;
 125         sdi->vendor = g_strdup("Arachnid Labs");
 126         sdi->model = g_strdup("Re:load Pro");
 127         sdi->version = g_strdup(buf + 8);
 128         sdi->inst_type = SR_INST_SERIAL;
 129         sdi->conn = serial;
 130
 131         cg = g_malloc0(sizeof(struct sr_channel_group));
 132         cg->name = g_strdup("1");
 133         sdi->channel_groups = g_slist_append(sdi->channel_groups, cg);
 134
 135         ch = sr_channel_new(sdi, 0, SR_CHANNEL_ANALOG, TRUE, "V");
 136         cg->channels = g_slist_append(cg->channels, ch);
 137
 138         ch = sr_channel_new(sdi, 0, SR_CHANNEL_ANALOG, TRUE, "I");
 139         cg->channels = g_slist_append(cg->channels, ch);
 140
 141         devc = g_malloc0(sizeof(struct dev_context));
 142         sr_sw_limits_init(&devc->limits);
 143         sdi->priv = devc;
 144
 145         serial_close(serial);
 146
 147         return std_scan_complete(di, g_slist_append(NULL, sdi));
 148 }
 149
 150 static int config_list(uint32_t key, GVariant **data,
 151         const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 152 {
 153         GVariantBuilder gvb;
 154         int ret;
 155
 156         /* Always available. */
 157         if (key == SR_CONF_SCAN_OPTIONS) {
 158                 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 159                         scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
 160                 return SR_OK;
 161         }
 162
 163         if (key == SR_CONF_DEVICE_OPTIONS && !sdi) {
 164                 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 165                         drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_t));
 166                 return SR_OK;
 167         }
 168
 169         if (!sdi)
 170                 return SR_ERR_ARG;
 171
 172         ret = SR_OK;
 173
 174         if (!cg) {
 175                 /* No channel group: global options. */
 176                 switch (key) {
 177                 case SR_CONF_DEVICE_OPTIONS:
 178                         *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 179                                 devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
 180                         break;
 181                 default:
 182                         return SR_ERR_NA;
 183                 }
 184         } else {
 185                 switch (key) {
 186                 case SR_CONF_DEVICE_OPTIONS:
 187                         *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 188                                 devopts_cg, ARRAY_SIZE(devopts_cg), sizeof(uint32_t));
 189                         break;
 190                 case SR_CONF_CURRENT_LIMIT:
 191                         g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
 192                         /* Min, max, step. */
 193                         g_variant_builder_add_value(&gvb, g_variant_new_double(0.0));
 194                         g_variant_builder_add_value(&gvb, g_variant_new_double(6.0));
 195                         g_variant_builder_add_value(&gvb, g_variant_new_double(0.001)); /* 1mA steps */
 196                         *data = g_variant_builder_end(&gvb);
 197                         break;
 198                 default:
 199                         return SR_ERR_NA;
 200                 }
 201         }
 202
 203         return ret;
 204 }
 205
 206 static int config_get(uint32_t key, GVariant **data,
 207         const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 208 {
 209         struct dev_context *devc;
 210         int ret;
 211         float fvalue;
 212
 213         (void)cg;
 214
 215         devc = sdi->priv;
 216
 217         /*
 218          * These features/keys are not supported by the hardware:
 219          *  - SR_CONF_OVER_VOLTAGE_PROTECTION_ACTIVE
 220          *  - SR_CONF_OVER_VOLTAGE_PROTECTION_THRESHOLD
 221          *  - SR_CONF_OVER_CURRENT_PROTECTION_ACTIVE
 222          *  - SR_CONF_OVER_CURRENT_PROTECTION_THRESHOLD
 223          *  - SR_CONF_ENABLED (state cannot be queried, only set)
 224          */
 225
 226         ret = SR_OK;
 227         switch (key) {
 228         case SR_CONF_LIMIT_SAMPLES:
 229         case SR_CONF_LIMIT_MSEC:
 230                 return sr_sw_limits_config_get(&devc->limits, key, data);
 231         case SR_CONF_REGULATION:
 232                 *data = g_variant_new_string("CC"); /* Always CC mode. */
 233                 break;
 234         case SR_CONF_VOLTAGE:
 235                 if (reloadpro_get_voltage_current(sdi, &fvalue, NULL) < 0)
 236                         return SR_ERR;
 237                 *data = g_variant_new_double(fvalue);
 238                 break;
 239         case SR_CONF_CURRENT:
 240                 if (reloadpro_get_voltage_current(sdi, NULL, &fvalue) < 0)
 241                         return SR_ERR;
 242                 *data = g_variant_new_double(fvalue);
 243                 break;
 244         case SR_CONF_CURRENT_LIMIT:
 245                 if (reloadpro_get_current_limit(sdi, &fvalue) == SR_OK)
 246                         *data = g_variant_new_double(fvalue);
 247                 break;
 248         case SR_CONF_OVER_VOLTAGE_PROTECTION_ENABLED:
 249                 *data = g_variant_new_boolean(TRUE); /* Always on. */
 250                 break;
 251         case SR_CONF_OVER_CURRENT_PROTECTION_ENABLED:
 252                 *data = g_variant_new_boolean(TRUE); /* Always on. */
 253                 break;
 254         case SR_CONF_OVER_TEMPERATURE_PROTECTION:
 255                 *data = g_variant_new_boolean(TRUE); /* Always on. */
 256                 break;
 257         case SR_CONF_OVER_TEMPERATURE_PROTECTION_ACTIVE:
 258                 *data = g_variant_new_boolean(devc->otp_active);
 259                 break;
 260         case SR_CONF_UNDER_VOLTAGE_CONDITION:
 261                 *data = g_variant_new_boolean(TRUE); /* Always on. */
 262                 break;
 263         case SR_CONF_UNDER_VOLTAGE_CONDITION_ACTIVE:
 264                 *data = g_variant_new_boolean(devc->uvc_active);
 265                 break;
 266         default:
 267                 return SR_ERR_NA;
 268         }
 269
 270         return ret;
 271 }
 272
 273 static int config_set(uint32_t key, GVariant *data,
 274         const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 275 {
 276         struct dev_context *devc;
 277         int ret;
 278
 279         (void)cg;
 280
 281         if (sdi->status != SR_ST_ACTIVE)
 282                 return SR_ERR_DEV_CLOSED;
 283
 284         devc = sdi->priv;
 285
 286         ret = SR_OK;
 287         switch (key) {
 288         case SR_CONF_LIMIT_SAMPLES:
 289         case SR_CONF_LIMIT_MSEC:
 290                 return sr_sw_limits_config_set(&devc->limits, key, data);
 291         case SR_CONF_ENABLED:
 292                 ret = reloadpro_set_on_off(sdi, g_variant_get_boolean(data));
 293                 break;
 294         case SR_CONF_CURRENT_LIMIT:
 295                 ret = reloadpro_set_current_limit(sdi,
 296                         g_variant_get_double(data));
 297                 break;
 298         default:
 299                 ret = SR_ERR_NA;
 300         }
 301
 302         return ret;
 303 }
 304
 305 static int dev_acquisition_start(const struct sr_dev_inst *sdi)
 306 {
 307         int ret;
 308         struct dev_context *devc;
 309         struct sr_serial_dev_inst *serial;
 310
 311         if (sdi->status != SR_ST_ACTIVE)
 312                 return SR_ERR_DEV_CLOSED;
 313
 314         devc = sdi->priv;
 315         serial = sdi->conn;
 316
 317         /* Send the 'monitor <ms>' command (doesn't have a reply). */
 318         if ((ret = serial_write_blocking(serial, CMD_MONITOR,
 319                         strlen(CMD_MONITOR), serial_timeout(serial,
 320                         strlen(CMD_MONITOR)))) < (int)strlen(CMD_MONITOR)) {
 321                 sr_err("Unable to send 'monitor' command: %d.", ret);
 322                 return SR_ERR;
 323         }
 324
 325         /* Poll every 100ms, or whenever some data comes in. */
 326         serial_source_add(sdi->session, serial, G_IO_IN, 100,
 327                           reloadpro_receive_data, (void *)sdi);
 328
 329         sr_sw_limits_acquisition_start(&devc->limits);
 330         std_session_send_df_header(sdi);
 331
 332         memset(devc->buf, 0, RELOADPRO_BUFSIZE);
 333         devc->buflen = 0;
 334
 335         return SR_OK;
 336 }
 337
 338 static struct sr_dev_driver arachnid_labs_re_load_pro_driver_info = {
 339         .name = "arachnid-labs-re-load-pro",
 340         .longname = "Arachnid Labs Re:load Pro",
 341         .api_version = 1,
 342         .init = std_init,
 343         .cleanup = std_cleanup,
 344         .scan = scan,
 345         .dev_list = std_dev_list,
 346         .config_get = config_get,
 347         .config_set = config_set,
 348         .config_list = config_list,
 349         .dev_open = std_serial_dev_open,
 350         .dev_close = std_serial_dev_close,
 351         .dev_acquisition_start = dev_acquisition_start,
 352         .dev_acquisition_stop = std_serial_dev_acquisition_stop,
 353         .context = NULL,
 354 };
 355 SR_REGISTER_DEV_DRIVER(arachnid_labs_re_load_pro_driver_info);