src/hardware/gwinstek-gds-800/api.c

   1 /*
   2  * This file is part of the libsigrok project.
   3  *
   4  * Copyright (C) 2015 Martin Lederhilger <martin.lederhilger@gmx.at>
   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 <string.h>
  21 #include "protocol.h"
  22
  23 static const uint32_t scanopts[] = {
  24         SR_CONF_CONN,
  25         SR_CONF_SERIALCOMM,
  26 };
  27
  28 static const uint32_t devopts[] = {
  29         SR_CONF_OSCILLOSCOPE,
  30         SR_CONF_LIMIT_FRAMES | SR_CONF_SET,
  31         SR_CONF_SAMPLERATE | SR_CONF_GET,
  32 };
  33
  34 SR_PRIV struct sr_dev_driver gwinstek_gds_800_driver_info;
  35
  36 static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
  37 {
  38         return std_init(sr_ctx, di, LOG_PREFIX);
  39 }
  40
  41 static struct sr_dev_inst *probe_device(struct sr_scpi_dev_inst *scpi)
  42 {
  43         struct dev_context *devc;
  44         struct sr_dev_inst *sdi;
  45         struct sr_scpi_hw_info *hw_info;
  46         struct sr_channel_group *cg;
  47
  48         if (sr_scpi_get_hw_id(scpi, &hw_info) != SR_OK) {
  49                 sr_info("Couldn't get IDN response.");
  50                 return NULL;
  51         }
  52
  53         if (strcmp(hw_info->manufacturer, "GW") != 0 ||
  54             strncmp(hw_info->model, "GDS-8", 5) != 0) {
  55                 sr_scpi_hw_info_free(hw_info);
  56                 return NULL;
  57         }
  58
  59         sdi = g_malloc0(sizeof(struct sr_dev_inst));
  60         sdi->vendor = g_strdup(hw_info->manufacturer);
  61         sdi->model = g_strdup(hw_info->model);
  62         sdi->version = g_strdup(hw_info->firmware_version);
  63         sdi->conn = scpi;
  64         sdi->driver = &gwinstek_gds_800_driver_info;
  65         sdi->inst_type = SR_INST_SCPI;
  66         sdi->serial_num = g_strdup(hw_info->serial_number);
  67         sdi->channels = NULL;
  68         sdi->channel_groups = NULL;
  69
  70         sr_scpi_hw_info_free(hw_info);
  71
  72         devc = g_malloc0(sizeof(struct dev_context));
  73         devc->frame_limit = 1;
  74         devc->sample_rate = 0.;
  75         devc->df_started  = FALSE;
  76         sdi->priv = devc;
  77
  78         sr_channel_new(sdi, 0, SR_CHANNEL_ANALOG, TRUE, "CH1");
  79         sr_channel_new(sdi, 1, SR_CHANNEL_ANALOG, TRUE, "CH2");
  80
  81         cg = g_malloc0(sizeof(struct sr_channel_group));
  82         cg->name = g_strdup("");
  83         cg->channels = g_slist_append(cg->channels, g_slist_nth_data(sdi->channels, 0));
  84         cg->channels = g_slist_append(cg->channels, g_slist_nth_data(sdi->channels, 1));
  85         cg->priv = NULL;
  86         sdi->channel_groups = g_slist_append(NULL, cg);
  87
  88         return sdi;
  89 }
  90
  91 static GSList *scan(struct sr_dev_driver *di, GSList *options)
  92 {
  93         return sr_scpi_scan(di->context, options, probe_device);
  94 }
  95
  96 static int dev_open(struct sr_dev_inst *sdi)
  97 {
  98         int ret;
  99         struct sr_scpi_dev_inst *scpi = sdi->conn;
 100
 101         if ((ret = sr_scpi_open(scpi)) < 0) {
 102                 sr_err("Failed to open SCPI device: %s.", sr_strerror(ret));
 103                 return SR_ERR;
 104         }
 105
 106         sdi->status = SR_ST_ACTIVE;
 107
 108         return SR_OK;
 109 }
 110
 111 static int dev_close(struct sr_dev_inst *sdi)
 112 {
 113         struct sr_scpi_dev_inst *scpi;
 114
 115         if (sdi->status != SR_ST_ACTIVE)
 116                 return SR_ERR_DEV_CLOSED;
 117
 118         scpi = sdi->conn;
 119         if (scpi) {
 120                 if (sr_scpi_close(scpi) < 0)
 121                         return SR_ERR;
 122                 sdi->status = SR_ST_INACTIVE;
 123         }
 124
 125         return SR_OK;
 126 }
 127
 128 static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
 129                 const struct sr_channel_group *cg)
 130 {
 131         struct dev_context *devc;
 132
 133         (void)cg;
 134
 135         if (!sdi || !(devc = sdi->priv))
 136                 return SR_ERR_ARG;
 137
 138         switch (key) {
 139         case SR_CONF_SAMPLERATE:
 140                 *data = g_variant_new_uint64(devc->sample_rate);
 141                 break;
 142         default:
 143                 return SR_ERR_NA;
 144         }
 145
 146         return SR_OK;
 147 }
 148
 149 static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi,
 150                 const struct sr_channel_group *cg)
 151 {
 152         struct dev_context *devc;
 153
 154         (void)cg;
 155
 156         if (!sdi || !(devc = sdi->priv))
 157                 return SR_ERR_ARG;
 158
 159         if (sdi->status != SR_ST_ACTIVE)
 160                 return SR_ERR_DEV_CLOSED;
 161
 162         switch (key) {
 163         case SR_CONF_LIMIT_FRAMES:
 164                 devc->frame_limit = g_variant_get_uint64(data);
 165                 break;
 166         default:
 167                 return SR_ERR_NA;
 168         }
 169
 170         return SR_OK;
 171 }
 172
 173 static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
 174                 const struct sr_channel_group *cg)
 175 {
 176         (void)sdi;
 177         (void)cg;
 178
 179         switch (key) {
 180         case SR_CONF_SCAN_OPTIONS:
 181                 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 182                         scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
 183                 return SR_OK;
 184         case SR_CONF_DEVICE_OPTIONS:
 185                 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 186                         devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
 187                 return SR_OK;
 188         default:
 189                 return SR_ERR_NA;
 190         }
 191
 192         return SR_OK;
 193 }
 194
 195 static int dev_acquisition_start(const struct sr_dev_inst *sdi)
 196 {
 197         struct sr_scpi_dev_inst *scpi;
 198         struct dev_context *devc;
 199
 200         scpi = sdi->conn;
 201         devc = sdi->priv;
 202
 203         if (sdi->status != SR_ST_ACTIVE)
 204                 return SR_ERR_DEV_CLOSED;
 205
 206         devc->state = START_ACQUISITION;
 207         devc->cur_acq_frame = 0;
 208
 209         sr_scpi_source_add(sdi->session, scpi, G_IO_IN, 50,
 210                         gwinstek_gds_800_receive_data, (void *)sdi);
 211
 212         return SR_OK;
 213 }
 214
 215 static int dev_acquisition_stop(struct sr_dev_inst *sdi)
 216 {
 217         struct sr_scpi_dev_inst *scpi;
 218         struct dev_context *devc;
 219         struct sr_datafeed_packet packet;
 220
 221         scpi = sdi->conn;
 222         devc = sdi->priv;
 223
 224         if (sdi->status != SR_ST_ACTIVE) {
 225                 sr_err("Device inactive, can't stop acquisition.");
 226                 return SR_ERR;
 227         }
 228
 229         if (devc->df_started) {
 230                 packet.type = SR_DF_FRAME_END;
 231                 sr_session_send(sdi, &packet);
 232
 233                 std_session_send_df_end(sdi, LOG_PREFIX);
 234
 235                 devc->df_started = FALSE;
 236         }
 237
 238         sr_scpi_source_remove(sdi->session, scpi);
 239
 240         return SR_OK;
 241 }
 242
 243 SR_PRIV struct sr_dev_driver gwinstek_gds_800_driver_info = {
 244         .name = "gwinstek-gds-800",
 245         .longname = "GW Instek GDS-800 series",
 246         .api_version = 1,
 247         .init = init,
 248         .cleanup = std_cleanup,
 249         .scan = scan,
 250         .dev_list = std_dev_list,
 251         .config_get = config_get,
 252         .config_set = config_set,
 253         .config_list = config_list,
 254         .dev_open = dev_open,
 255         .dev_close = dev_close,
 256         .dev_acquisition_start = dev_acquisition_start,
 257         .dev_acquisition_stop = dev_acquisition_stop,
 258         .context = NULL,
 259 };