hardware/tondaj-sl-814/api.c

   1 /*
   2  * This file is part of the libsigrok project.
   3  *
   4  * Copyright (C) 2012 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, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  19  */
  20
  21 #include <fcntl.h>
  22 #include <glib.h>
  23 #include "libsigrok.h"
  24 #include "libsigrok-internal.h"
  25 #include "protocol.h"
  26
  27 #define SERIALCOMM "9600/8e1"
  28
  29 static const int32_t hwopts[] = {
  30         SR_CONF_CONN,
  31         SR_CONF_SERIALCOMM,
  32 };
  33
  34 static const int32_t hwcaps[] = {
  35         SR_CONF_SOUNDLEVELMETER,
  36         SR_CONF_LIMIT_SAMPLES,
  37         SR_CONF_CONTINUOUS,
  38 };
  39
  40 SR_PRIV struct sr_dev_driver tondaj_sl_814_driver_info;
  41 static struct sr_dev_driver *di = &tondaj_sl_814_driver_info;
  42
  43 static int dev_clear(void)
  44 {
  45         return std_dev_clear(di, NULL);
  46 }
  47
  48 static int init(struct sr_context *sr_ctx)
  49 {
  50         return std_init(sr_ctx, di, LOG_PREFIX);
  51 }
  52
  53 static GSList *scan(GSList *options)
  54 {
  55         struct drv_context *drvc;
  56         struct dev_context *devc;
  57         struct sr_dev_inst *sdi;
  58         struct sr_config *src;
  59         struct sr_probe *probe;
  60         GSList *devices, *l;
  61         const char *conn, *serialcomm;
  62         struct sr_serial_dev_inst *serial;
  63
  64         drvc = di->priv;
  65         drvc->instances = NULL;
  66
  67         devices = NULL;
  68
  69         conn = serialcomm = NULL;
  70         for (l = options; l; l = l->next) {
  71                 if (!(src = l->data)) {
  72                         sr_err("Invalid option data, skipping.");
  73                         continue;
  74                 }
  75                 switch (src->key) {
  76                 case SR_CONF_CONN:
  77                         conn = g_variant_get_string(src->data, NULL);
  78                         break;
  79                 case SR_CONF_SERIALCOMM:
  80                         serialcomm = g_variant_get_string(src->data, NULL);
  81                         break;
  82                 default:
  83                         sr_err("Unknown option %d, skipping.", src->key);
  84                         break;
  85                 }
  86         }
  87         if (!conn)
  88                 return NULL;
  89         if (!serialcomm)
  90                 serialcomm = SERIALCOMM;
  91
  92         if (!(sdi = sr_dev_inst_new(0, SR_ST_INACTIVE, "Tondaj",
  93                                     "SL-814", NULL))) {
  94                 sr_err("Failed to create device instance.");
  95                 return NULL;
  96         }
  97
  98         if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) {
  99                 sr_err("Device context malloc failed.");
 100                 return NULL;
 101         }
 102
 103         if (!(serial = sr_serial_dev_inst_new(conn, serialcomm)))
 104                 return NULL;
 105
 106         if (serial_open(serial, SERIAL_RDWR | SERIAL_NONBLOCK) != SR_OK)
 107                 return NULL;
 108
 109         sdi->inst_type = SR_INST_SERIAL;
 110         sdi->conn = serial;
 111
 112         sdi->priv = devc;
 113         sdi->driver = di;
 114         probe = sr_probe_new(0, SR_PROBE_ANALOG, TRUE, "P1");
 115         if (!probe) {
 116                 sr_err("Failed to create probe.");
 117                 return NULL;
 118         }
 119         sdi->probes = g_slist_append(sdi->probes, probe);
 120         drvc->instances = g_slist_append(drvc->instances, sdi);
 121         devices = g_slist_append(devices, sdi);
 122
 123         return devices;
 124 }
 125
 126 static GSList *dev_list(void)
 127 {
 128         return ((struct drv_context *)(di->priv))->instances;
 129 }
 130
 131 static int dev_open(struct sr_dev_inst *sdi)
 132 {
 133         struct sr_serial_dev_inst *serial;
 134
 135         serial = sdi->conn;
 136         if (serial_open(serial, SERIAL_RDWR | SERIAL_NONBLOCK) != SR_OK)
 137                 return SR_ERR;
 138
 139         sdi->status = SR_ST_ACTIVE;
 140
 141         return SR_OK;
 142 }
 143
 144 static int dev_close(struct sr_dev_inst *sdi)
 145 {
 146         struct sr_serial_dev_inst *serial;
 147
 148         serial = sdi->conn;
 149         if (serial && serial->fd != -1) {
 150                 serial_close(serial);
 151                 sdi->status = SR_ST_INACTIVE;
 152         }
 153
 154         return SR_OK;
 155 }
 156
 157 static int cleanup(void)
 158 {
 159         return dev_clear();
 160 }
 161
 162 static int config_set(int id, GVariant *data, const struct sr_dev_inst *sdi,
 163                 const struct sr_probe_group *probe_group)
 164 {
 165         struct dev_context *devc;
 166
 167         (void)probe_group;
 168
 169         if (sdi->status != SR_ST_ACTIVE)
 170                 return SR_ERR_DEV_CLOSED;
 171
 172         devc = sdi->priv;
 173
 174         switch (id) {
 175         case SR_CONF_LIMIT_SAMPLES:
 176                 devc->limit_samples = g_variant_get_uint64(data);
 177                 sr_dbg("Setting sample limit to %" PRIu64 ".",
 178                        devc->limit_samples);
 179                 break;
 180         default:
 181                 return SR_ERR_NA;
 182         }
 183
 184         return SR_OK;
 185 }
 186
 187 static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi,
 188                 const struct sr_probe_group *probe_group)
 189 {
 190         (void)sdi;
 191         (void)probe_group;
 192
 193         switch (key) {
 194         case SR_CONF_SCAN_OPTIONS:
 195                 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
 196                                 hwopts, ARRAY_SIZE(hwopts), sizeof(int32_t));
 197                 break;
 198         case SR_CONF_DEVICE_OPTIONS:
 199                 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
 200                                 hwcaps, ARRAY_SIZE(hwcaps), sizeof(int32_t));
 201                 break;
 202         default:
 203                 return SR_ERR_NA;
 204         }
 205
 206         return SR_OK;
 207 }
 208
 209 static int dev_acquisition_start(const struct sr_dev_inst *sdi,
 210                                     void *cb_data)
 211 {
 212         struct dev_context *devc;
 213         struct sr_serial_dev_inst *serial;
 214
 215         if (sdi->status != SR_ST_ACTIVE)
 216                 return SR_ERR_DEV_CLOSED;
 217
 218         devc = sdi->priv;
 219         devc->cb_data = cb_data;
 220
 221         /* Send header packet to the session bus. */
 222         std_session_send_df_header(cb_data, LOG_PREFIX);
 223
 224         /* Poll every 500ms, or whenever some data comes in. */
 225         serial = sdi->conn;
 226         sr_source_add(serial->fd, G_IO_IN, 500,
 227                       tondaj_sl_814_receive_data, (void *)sdi);
 228
 229         return SR_OK;
 230 }
 231
 232 static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
 233 {
 234         return std_dev_acquisition_stop_serial(sdi, cb_data, dev_close,
 235                                                sdi->conn, LOG_PREFIX);
 236 }
 237
 238 SR_PRIV struct sr_dev_driver tondaj_sl_814_driver_info = {
 239         .name = "tondaj-sl-814",
 240         .longname = "Tondaj SL-814",
 241         .api_version = 1,
 242         .init = init,
 243         .cleanup = cleanup,
 244         .scan = scan,
 245         .dev_list = dev_list,
 246         .dev_clear = dev_clear,
 247         .config_get = NULL,
 248         .config_set = config_set,
 249         .config_list = config_list,
 250         .dev_open = dev_open,
 251         .dev_close = dev_close,
 252         .dev_acquisition_start = dev_acquisition_start,
 253         .dev_acquisition_stop = dev_acquisition_stop,
 254         .priv = NULL,
 255 };