src/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 init(struct sr_context *sr_ctx)
  44 {
  45         return std_init(sr_ctx, di, LOG_PREFIX);
  46 }
  47
  48 static GSList *scan(GSList *options)
  49 {
  50         struct drv_context *drvc;
  51         struct dev_context *devc;
  52         struct sr_dev_inst *sdi;
  53         struct sr_config *src;
  54         struct sr_channel *ch;
  55         GSList *devices, *l;
  56         const char *conn, *serialcomm;
  57         struct sr_serial_dev_inst *serial;
  58
  59         drvc = di->priv;
  60         drvc->instances = NULL;
  61
  62         devices = NULL;
  63
  64         conn = serialcomm = NULL;
  65         for (l = options; l; l = l->next) {
  66                 if (!(src = l->data)) {
  67                         sr_err("Invalid option data, skipping.");
  68                         continue;
  69                 }
  70                 switch (src->key) {
  71                 case SR_CONF_CONN:
  72                         conn = g_variant_get_string(src->data, NULL);
  73                         break;
  74                 case SR_CONF_SERIALCOMM:
  75                         serialcomm = g_variant_get_string(src->data, NULL);
  76                         break;
  77                 default:
  78                         sr_err("Unknown option %d, skipping.", src->key);
  79                         break;
  80                 }
  81         }
  82         if (!conn)
  83                 return NULL;
  84         if (!serialcomm)
  85                 serialcomm = SERIALCOMM;
  86
  87         if (!(sdi = sr_dev_inst_new(0, SR_ST_INACTIVE, "Tondaj",
  88                                     "SL-814", NULL))) {
  89                 sr_err("Failed to create device instance.");
  90                 return NULL;
  91         }
  92
  93         if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) {
  94                 sr_err("Device context malloc failed.");
  95                 return NULL;
  96         }
  97
  98         if (!(serial = sr_serial_dev_inst_new(conn, serialcomm)))
  99                 return NULL;
 100
 101         if (serial_open(serial, SERIAL_RDWR | SERIAL_NONBLOCK) != SR_OK)
 102                 return NULL;
 103
 104         sdi->inst_type = SR_INST_SERIAL;
 105         sdi->conn = serial;
 106
 107         sdi->priv = devc;
 108         sdi->driver = di;
 109         ch = sr_channel_new(0, SR_CHANNEL_ANALOG, TRUE, "P1");
 110         if (!ch) {
 111                 sr_err("Failed to create channel.");
 112                 return NULL;
 113         }
 114         sdi->channels = g_slist_append(sdi->channels, ch);
 115         drvc->instances = g_slist_append(drvc->instances, sdi);
 116         devices = g_slist_append(devices, sdi);
 117
 118         return devices;
 119 }
 120
 121 static GSList *dev_list(void)
 122 {
 123         return ((struct drv_context *)(di->priv))->instances;
 124 }
 125
 126 static int cleanup(void)
 127 {
 128         return std_dev_clear(di, NULL);
 129 }
 130
 131 static int config_set(int id, GVariant *data, const struct sr_dev_inst *sdi,
 132                 const struct sr_channel_group *cg)
 133 {
 134         struct dev_context *devc;
 135
 136         (void)cg;
 137
 138         if (sdi->status != SR_ST_ACTIVE)
 139                 return SR_ERR_DEV_CLOSED;
 140
 141         devc = sdi->priv;
 142
 143         switch (id) {
 144         case SR_CONF_LIMIT_SAMPLES:
 145                 devc->limit_samples = g_variant_get_uint64(data);
 146                 sr_dbg("Setting sample limit to %" PRIu64 ".",
 147                        devc->limit_samples);
 148                 break;
 149         default:
 150                 return SR_ERR_NA;
 151         }
 152
 153         return SR_OK;
 154 }
 155
 156 static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi,
 157                 const struct sr_channel_group *cg)
 158 {
 159         (void)sdi;
 160         (void)cg;
 161
 162         switch (key) {
 163         case SR_CONF_SCAN_OPTIONS:
 164                 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
 165                                 hwopts, ARRAY_SIZE(hwopts), sizeof(int32_t));
 166                 break;
 167         case SR_CONF_DEVICE_OPTIONS:
 168                 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
 169                                 hwcaps, ARRAY_SIZE(hwcaps), sizeof(int32_t));
 170                 break;
 171         default:
 172                 return SR_ERR_NA;
 173         }
 174
 175         return SR_OK;
 176 }
 177
 178 static int dev_acquisition_start(const struct sr_dev_inst *sdi,
 179                                     void *cb_data)
 180 {
 181         struct dev_context *devc;
 182         struct sr_serial_dev_inst *serial;
 183
 184         if (sdi->status != SR_ST_ACTIVE)
 185                 return SR_ERR_DEV_CLOSED;
 186
 187         devc = sdi->priv;
 188         devc->cb_data = cb_data;
 189
 190         /* Send header packet to the session bus. */
 191         std_session_send_df_header(cb_data, LOG_PREFIX);
 192
 193         /* Poll every 500ms, or whenever some data comes in. */
 194         serial = sdi->conn;
 195         serial_source_add(sdi->session, serial, G_IO_IN, 500,
 196                       tondaj_sl_814_receive_data, (void *)sdi);
 197
 198         return SR_OK;
 199 }
 200
 201 static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
 202 {
 203         return std_serial_dev_acquisition_stop(sdi, cb_data, std_serial_dev_close,
 204                         sdi->conn, LOG_PREFIX);
 205 }
 206
 207 SR_PRIV struct sr_dev_driver tondaj_sl_814_driver_info = {
 208         .name = "tondaj-sl-814",
 209         .longname = "Tondaj SL-814",
 210         .api_version = 1,
 211         .init = init,
 212         .cleanup = cleanup,
 213         .scan = scan,
 214         .dev_list = dev_list,
 215         .dev_clear = NULL,
 216         .config_get = NULL,
 217         .config_set = config_set,
 218         .config_list = config_list,
 219         .dev_open = std_serial_dev_open,
 220         .dev_close = std_serial_dev_close,
 221         .dev_acquisition_start = dev_acquisition_start,
 222         .dev_acquisition_stop = dev_acquisition_stop,
 223         .priv = NULL,
 224 };