src/hardware/colead-slm/api.c

   1 /*
   2  * This file is part of the libsigrok project.
   3  *
   4  * Copyright (C) 2012 Bert Vermeulen <bert@biot.com>
   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 <config.h>
  21 #include <glib.h>
  22 #include <sys/types.h>
  23 #include <sys/stat.h>
  24 #include <fcntl.h>
  25 #include <string.h>
  26 #include <libsigrok/libsigrok.h>
  27 #include "libsigrok-internal.h"
  28 #include "protocol.h"
  29
  30 /* The Colead SL-5868P uses this. */
  31 #define SERIALCOMM "2400/8n1"
  32
  33 static const uint32_t scanopts[] = {
  34         SR_CONF_CONN,
  35         SR_CONF_SERIALCOMM,
  36 };
  37
  38 static const uint32_t devopts[] = {
  39         SR_CONF_SOUNDLEVELMETER,
  40         SR_CONF_CONTINUOUS,
  41         SR_CONF_LIMIT_SAMPLES | SR_CONF_SET,
  42         SR_CONF_LIMIT_MSEC | SR_CONF_SET,
  43 };
  44
  45 static GSList *scan(struct sr_dev_driver *di, GSList *options)
  46 {
  47         struct drv_context *drvc;
  48         struct dev_context *devc;
  49         struct sr_dev_inst *sdi;
  50         struct sr_config *src;
  51         GSList *devices, *l;
  52         const char *conn, *serialcomm;
  53
  54         drvc = di->context;
  55         drvc->instances = NULL;
  56
  57         devices = NULL;
  58
  59         conn = serialcomm = NULL;
  60         for (l = options; l; l = l->next) {
  61                 src = l->data;
  62                 switch (src->key) {
  63                 case SR_CONF_CONN:
  64                         conn = g_variant_get_string(src->data, NULL);
  65                         break;
  66                 case SR_CONF_SERIALCOMM:
  67                         serialcomm = g_variant_get_string(src->data, NULL);
  68                         break;
  69                 }
  70         }
  71         if (!conn)
  72                 return NULL;
  73         if (!serialcomm)
  74                 serialcomm = SERIALCOMM;
  75
  76         sdi = g_malloc0(sizeof(struct sr_dev_inst));
  77         sdi->status = SR_ST_INACTIVE;
  78         sdi->vendor = g_strdup("Colead");
  79         sdi->model = g_strdup("SL-5868P");
  80         devc = g_malloc0(sizeof(struct dev_context));
  81         sr_sw_limits_init(&devc->limits);
  82         sdi->conn = sr_serial_dev_inst_new(conn, serialcomm);
  83         sdi->inst_type = SR_INST_SERIAL;
  84         sdi->priv = devc;
  85         sdi->driver = di;
  86         sr_channel_new(sdi, 0, SR_CHANNEL_ANALOG, TRUE, "P1");
  87         drvc->instances = g_slist_append(drvc->instances, sdi);
  88         devices = g_slist_append(devices, sdi);
  89
  90         return devices;
  91 }
  92
  93 static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi,
  94                 const struct sr_channel_group *cg)
  95 {
  96         struct dev_context *devc;
  97
  98         (void)cg;
  99
 100         if (sdi->status != SR_ST_ACTIVE)
 101                 return SR_ERR_DEV_CLOSED;
 102
 103         devc = sdi->priv;
 104
 105         return sr_sw_limits_config_set(&devc->limits, key, data);
 106 }
 107
 108 static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
 109                 const struct sr_channel_group *cg)
 110 {
 111         (void)sdi;
 112         (void)cg;
 113
 114         switch (key) {
 115         case SR_CONF_SCAN_OPTIONS:
 116                 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 117                                 scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
 118                 break;
 119         case SR_CONF_DEVICE_OPTIONS:
 120                 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 121                                 devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
 122                 break;
 123         default:
 124                 return SR_ERR_NA;
 125         }
 126
 127         return SR_OK;
 128 }
 129
 130 static int dev_acquisition_start(const struct sr_dev_inst *sdi)
 131 {
 132         struct dev_context *devc = sdi->priv;
 133         struct sr_serial_dev_inst *serial;
 134
 135         if (sdi->status != SR_ST_ACTIVE)
 136                 return SR_ERR_DEV_CLOSED;
 137
 138         sr_sw_limits_acquisition_start(&devc->limits);
 139         std_session_send_df_header(sdi, LOG_PREFIX);
 140
 141         /* Poll every 150ms, or whenever some data comes in. */
 142         serial = sdi->conn;
 143         serial_source_add(sdi->session, serial, G_IO_IN, 150,
 144                         colead_slm_receive_data, (void *)sdi);
 145
 146         return SR_OK;
 147 }
 148
 149 static int dev_acquisition_stop(struct sr_dev_inst *sdi)
 150 {
 151         return std_serial_dev_acquisition_stop(sdi, std_serial_dev_close,
 152                         sdi->conn, LOG_PREFIX);
 153 }
 154
 155 static struct sr_dev_driver colead_slm_driver_info = {
 156         .name = "colead-slm",
 157         .longname = "Colead SLM",
 158         .api_version = 1,
 159         .init = std_init,
 160         .cleanup = std_cleanup,
 161         .scan = scan,
 162         .dev_list = std_dev_list,
 163         .dev_clear = NULL,
 164         .config_get = NULL,
 165         .config_set = config_set,
 166         .config_list = config_list,
 167         .dev_open = std_serial_dev_open,
 168         .dev_close = std_serial_dev_close,
 169         .dev_acquisition_start = dev_acquisition_start,
 170         .dev_acquisition_stop = dev_acquisition_stop,
 171         .context = NULL,
 172 };
 173 SR_REGISTER_DEV_DRIVER(colead_slm_driver_info);