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 clear_instances(void)
  44 {
  45         return std_dev_clear(di, NULL);
  46 }
  47
  48 static int hw_init(struct sr_context *sr_ctx)
  49 {
  50         return std_hw_init(sr_ctx, di, LOG_PREFIX);
  51 }
  52
  53 static GSList *hw_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 *hw_dev_list(void)
 127 {
 128         return ((struct drv_context *)(di->priv))->instances;
 129 }
 130
 131 static int hw_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 hw_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 hw_cleanup(void)
 158 {
 159         return clear_instances();
 160 }
 161
 162 static int config_set(int id, GVariant *data, const struct sr_dev_inst *sdi)
 163 {
 164         struct dev_context *devc;
 165
 166         if (sdi->status != SR_ST_ACTIVE)
 167                 return SR_ERR_DEV_CLOSED;
 168
 169         devc = sdi->priv;
 170
 171         switch (id) {
 172         case SR_CONF_LIMIT_SAMPLES:
 173                 devc->limit_samples = g_variant_get_uint64(data);
 174                 sr_dbg("Setting sample limit to %" PRIu64 ".",
 175                        devc->limit_samples);
 176                 break;
 177         default:
 178                 return SR_ERR_NA;
 179         }
 180
 181         return SR_OK;
 182 }
 183
 184 static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi)
 185 {
 186
 187         (void)sdi;
 188
 189         switch (key) {
 190         case SR_CONF_SCAN_OPTIONS:
 191                 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
 192                                 hwopts, ARRAY_SIZE(hwopts), sizeof(int32_t));
 193                 break;
 194         case SR_CONF_DEVICE_OPTIONS:
 195                 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
 196                                 hwcaps, ARRAY_SIZE(hwcaps), sizeof(int32_t));
 197                 break;
 198         default:
 199                 return SR_ERR_NA;
 200         }
 201
 202         return SR_OK;
 203 }
 204
 205 static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi,
 206                                     void *cb_data)
 207 {
 208         struct dev_context *devc;
 209         struct sr_serial_dev_inst *serial;
 210
 211         if (sdi->status != SR_ST_ACTIVE)
 212                 return SR_ERR_DEV_CLOSED;
 213
 214         devc = sdi->priv;
 215         devc->cb_data = cb_data;
 216
 217         /* Send header packet to the session bus. */
 218         std_session_send_df_header(cb_data, LOG_PREFIX);
 219
 220         /* Poll every 500ms, or whenever some data comes in. */
 221         serial = sdi->conn;
 222         sr_source_add(serial->fd, G_IO_IN, 500,
 223                       tondaj_sl_814_receive_data, (void *)sdi);
 224
 225         return SR_OK;
 226 }
 227
 228 static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
 229 {
 230         return std_hw_dev_acquisition_stop_serial(sdi, cb_data, hw_dev_close,
 231                                                   sdi->conn, LOG_PREFIX);
 232 }
 233
 234 SR_PRIV struct sr_dev_driver tondaj_sl_814_driver_info = {
 235         .name = "tondaj-sl-814",
 236         .longname = "Tondaj SL-814",
 237         .api_version = 1,
 238         .init = hw_init,
 239         .cleanup = hw_cleanup,
 240         .scan = hw_scan,
 241         .dev_list = hw_dev_list,
 242         .dev_clear = clear_instances,
 243         .config_get = NULL,
 244         .config_set = config_set,
 245         .config_list = config_list,
 246         .dev_open = hw_dev_open,
 247         .dev_close = hw_dev_close,
 248         .dev_acquisition_start = hw_dev_acquisition_start,
 249         .dev_acquisition_stop = hw_dev_acquisition_stop,
 250         .priv = NULL,
 251 };