src/hardware/appa-55ii/api.c

   1 /*
   2  * This file is part of the libsigrok project.
   3  *
   4  * Copyright (C) 2013 Aurelien Jacobs <aurel@gnuage.org>
   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 <string.h>
  22 #include "protocol.h"
  23
  24 static const uint32_t scanopts[] = {
  25         SR_CONF_CONN,
  26         SR_CONF_SERIALCOMM,
  27 };
  28
  29 static const uint32_t drvopts[] = {
  30         SR_CONF_THERMOMETER,
  31 };
  32
  33 static const uint32_t devopts[] = {
  34         SR_CONF_CONTINUOUS,
  35         SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET,
  36         SR_CONF_LIMIT_MSEC | SR_CONF_GET | SR_CONF_SET,
  37         SR_CONF_DATA_SOURCE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
  38 };
  39
  40 static const char *data_sources[] = {
  41         "Live",
  42         "Memory",
  43 };
  44
  45 static GSList *scan(struct sr_dev_driver *di, GSList *options)
  46 {
  47         struct dev_context *devc;
  48         struct sr_serial_dev_inst *serial;
  49         struct sr_dev_inst *sdi;
  50         struct sr_config *src;
  51         GSList *devices, *l;
  52         const char *conn, *serialcomm;
  53         uint8_t buf[50];
  54         size_t len;
  55
  56         len = sizeof(buf);
  57         devices = NULL;
  58         conn = serialcomm = NULL;
  59         for (l = options; l; l = l->next) {
  60                 src = l->data;
  61                 switch (src->key) {
  62                 case SR_CONF_CONN:
  63                         conn = g_variant_get_string(src->data, NULL);
  64                         break;
  65                 case SR_CONF_SERIALCOMM:
  66                         serialcomm = g_variant_get_string(src->data, NULL);
  67                         break;
  68                 }
  69         }
  70         if (!conn)
  71                 return NULL;
  72         if (!serialcomm)
  73                 serialcomm = "9600/8n1";
  74
  75         serial = sr_serial_dev_inst_new(conn, serialcomm);
  76
  77         if (serial_open(serial, SERIAL_RDONLY) != SR_OK)
  78                 return NULL;
  79
  80         sr_info("Probing serial port %s.", conn);
  81
  82         /* Let's get a bit of data and see if we can find a packet. */
  83         if (serial_stream_detect(serial, buf, &len, 25,
  84                         appa_55ii_packet_valid, NULL, NULL, 500) != SR_OK)
  85                 goto scan_cleanup;
  86
  87         sr_info("Found device on port %s.", conn);
  88
  89         sdi = g_malloc0(sizeof(struct sr_dev_inst));
  90         sdi->status = SR_ST_INACTIVE;
  91         sdi->vendor = g_strdup("APPA");
  92         sdi->model = g_strdup("55II");
  93         devc = g_malloc0(sizeof(struct dev_context));
  94         devc->data_source = DEFAULT_DATA_SOURCE;
  95         sdi->inst_type = SR_INST_SERIAL;
  96         sdi->conn = serial;
  97         sdi->priv = devc;
  98
  99         sr_channel_new(sdi, 0, SR_CHANNEL_ANALOG, TRUE, "T1");
 100         sr_channel_new(sdi, 0, SR_CHANNEL_ANALOG, TRUE, "T2");
 101
 102         devices = g_slist_append(devices, sdi);
 103
 104 scan_cleanup:
 105         serial_close(serial);
 106
 107         return std_scan_complete(di, devices);
 108 }
 109
 110 static int config_get(uint32_t key, GVariant **data,
 111         const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 112 {
 113         struct dev_context *devc = sdi->priv;
 114
 115         (void)cg;
 116
 117         switch (key) {
 118         case SR_CONF_LIMIT_SAMPLES:
 119         case SR_CONF_LIMIT_MSEC:
 120                 return sr_sw_limits_config_get(&devc->limits, key, data);
 121         case SR_CONF_DATA_SOURCE:
 122                 *data = g_variant_new_string(data_sources[devc->data_source]);
 123                 break;
 124         default:
 125                 return SR_ERR_NA;
 126         }
 127
 128         return SR_OK;
 129 }
 130
 131 static int config_set(uint32_t key, GVariant *data,
 132         const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 133 {
 134         struct dev_context *devc;
 135         int idx;
 136
 137         (void)cg;
 138
 139         devc = sdi->priv;
 140
 141         switch (key) {
 142         case SR_CONF_LIMIT_SAMPLES:
 143         case SR_CONF_LIMIT_MSEC:
 144                 return sr_sw_limits_config_set(&devc->limits, key, data);
 145         case SR_CONF_DATA_SOURCE:
 146                 if ((idx = std_str_idx(data, ARRAY_AND_SIZE(data_sources))) < 0)
 147                         return SR_ERR_ARG;
 148                 devc->data_source = idx;
 149                 break;
 150         default:
 151                 return SR_ERR_NA;
 152         }
 153
 154         return SR_OK;
 155 }
 156
 157 static int config_list(uint32_t key, GVariant **data,
 158         const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 159 {
 160         switch (key) {
 161         case SR_CONF_SCAN_OPTIONS:
 162         case SR_CONF_DEVICE_OPTIONS:
 163                 return STD_CONFIG_LIST(key, data, sdi, cg, scanopts, drvopts, devopts);
 164         case SR_CONF_DATA_SOURCE:
 165                 *data = g_variant_new_strv(ARRAY_AND_SIZE(data_sources));
 166                 break;
 167         default:
 168                 return SR_ERR_NA;
 169         }
 170
 171         return SR_OK;
 172 }
 173
 174 static int dev_acquisition_start(const struct sr_dev_inst *sdi)
 175 {
 176         struct sr_serial_dev_inst *serial;
 177         struct dev_context *devc;
 178
 179         serial = sdi->conn;
 180         devc = sdi->priv;
 181
 182         sr_sw_limits_acquisition_start(&devc->limits);
 183
 184         std_session_send_df_header(sdi);
 185
 186         serial_source_add(sdi->session, serial, G_IO_IN, 50,
 187                         appa_55ii_receive_data, (void *)sdi);
 188
 189         return SR_OK;
 190 }
 191
 192 static struct sr_dev_driver appa_55ii_driver_info = {
 193         .name = "appa-55ii",
 194         .longname = "APPA 55II",
 195         .api_version = 1,
 196         .init = std_init,
 197         .cleanup = std_cleanup,
 198         .scan = scan,
 199         .dev_list = std_dev_list,
 200         .dev_clear = std_dev_clear,
 201         .config_get = config_get,
 202         .config_set = config_set,
 203         .config_list = config_list,
 204         .dev_open = std_serial_dev_open,
 205         .dev_close = std_serial_dev_close,
 206         .dev_acquisition_start = dev_acquisition_start,
 207         .dev_acquisition_stop = std_serial_dev_acquisition_stop,
 208         .context = NULL,
 209 };
 210 SR_REGISTER_DEV_DRIVER(appa_55ii_driver_info);