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 drv_context *drvc;
  48         struct dev_context *devc;
  49         struct sr_serial_dev_inst *serial;
  50         struct sr_dev_inst *sdi;
  51         struct sr_config *src;
  52         GSList *devices, *l;
  53         const char *conn, *serialcomm;
  54         uint8_t buf[50];
  55         size_t len;
  56
  57         len = sizeof(buf);
  58         devices = NULL;
  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 = "9600/8n1";
  75
  76         serial = sr_serial_dev_inst_new(conn, serialcomm);
  77
  78         if (serial_open(serial, SERIAL_RDONLY) != SR_OK)
  79                 return NULL;
  80
  81         sr_info("Probing serial port %s.", conn);
  82
  83         drvc = di->context;
  84         drvc->instances = NULL;
  85         serial_flush(serial);
  86
  87         /* Let's get a bit of data and see if we can find a packet. */
  88         if (serial_stream_detect(serial, buf, &len, 25,
  89                         appa_55ii_packet_valid, 500, 9600) != SR_OK)
  90                 goto scan_cleanup;
  91
  92         sr_info("Found device on port %s.", conn);
  93
  94         sdi = g_malloc0(sizeof(struct sr_dev_inst));
  95         sdi->status = SR_ST_INACTIVE;
  96         sdi->vendor = g_strdup("APPA");
  97         sdi->model = g_strdup("55II");
  98         devc = g_malloc0(sizeof(struct dev_context));
  99         devc->data_source = DEFAULT_DATA_SOURCE;
 100         sdi->inst_type = SR_INST_SERIAL;
 101         sdi->conn = serial;
 102         sdi->priv = devc;
 103         sdi->driver = di;
 104
 105         sr_channel_new(sdi, 0, SR_CHANNEL_ANALOG, TRUE, "T1");
 106         sr_channel_new(sdi, 0, SR_CHANNEL_ANALOG, TRUE, "T2");
 107
 108         drvc->instances = g_slist_append(drvc->instances, sdi);
 109         devices = g_slist_append(devices, sdi);
 110
 111 scan_cleanup:
 112         serial_close(serial);
 113
 114         return devices;
 115 }
 116
 117 static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
 118                 const struct sr_channel_group *cg)
 119 {
 120         struct dev_context *devc = sdi->priv;
 121
 122         (void)cg;
 123
 124         switch (key) {
 125         case SR_CONF_LIMIT_SAMPLES:
 126         case SR_CONF_LIMIT_MSEC:
 127                 return sr_sw_limits_config_get(&devc->limits, key, data);
 128         case SR_CONF_DATA_SOURCE:
 129                 *data = g_variant_new_string(data_sources[devc->data_source]);
 130                 break;
 131         default:
 132                 return SR_ERR_NA;
 133         }
 134
 135         return SR_OK;
 136 }
 137
 138 static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi,
 139                 const struct sr_channel_group *cg)
 140 {
 141         struct dev_context *devc;
 142         const char *tmp_str;
 143         unsigned int i;
 144
 145         (void)cg;
 146
 147         if (sdi->status != SR_ST_ACTIVE)
 148                 return SR_ERR_DEV_CLOSED;
 149
 150         devc = sdi->priv;
 151
 152         switch (key) {
 153         case SR_CONF_LIMIT_SAMPLES:
 154                 return sr_sw_limits_config_set(&devc->limits, key, data);
 155         case SR_CONF_DATA_SOURCE: {
 156                 tmp_str = g_variant_get_string(data, NULL);
 157                 for (i = 0; i < ARRAY_SIZE(data_sources); i++)
 158                         if (!strcmp(tmp_str, data_sources[i])) {
 159                                 devc->data_source = i;
 160                                 break;
 161                         }
 162                 if (i == ARRAY_SIZE(data_sources))
 163                         return SR_ERR;
 164                 break;
 165         }
 166         default:
 167                 return SR_ERR_NA;
 168         }
 169
 170         return SR_OK;
 171 }
 172
 173 static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
 174                 const struct sr_channel_group *cg)
 175 {
 176         (void)cg;
 177
 178         switch (key) {
 179         case SR_CONF_SCAN_OPTIONS:
 180                 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 181                                 scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
 182                 break;
 183         case SR_CONF_DEVICE_OPTIONS:
 184                 if (!sdi)
 185                         *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 186                                         drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_t));
 187                 else
 188                         *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 189                                         devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
 190                 break;
 191         case SR_CONF_DATA_SOURCE:
 192                 *data = g_variant_new_strv(data_sources, ARRAY_SIZE(data_sources));
 193                 break;
 194         default:
 195                 return SR_ERR_NA;
 196         }
 197
 198         return SR_OK;
 199 }
 200
 201 static int dev_acquisition_start(const struct sr_dev_inst *sdi)
 202 {
 203         struct sr_serial_dev_inst *serial;
 204         struct dev_context *devc;
 205
 206         serial = sdi->conn;
 207         if (sdi->status != SR_ST_ACTIVE)
 208                 return SR_ERR_DEV_CLOSED;
 209
 210         devc = sdi->priv;
 211
 212         sr_sw_limits_acquisition_start(&devc->limits);
 213
 214         std_session_send_df_header(sdi, LOG_PREFIX);
 215
 216         /* Poll every 50ms, or whenever some data comes in. */
 217         serial_source_add(sdi->session, serial, G_IO_IN, 50,
 218                         appa_55ii_receive_data, (void *)sdi);
 219
 220         return SR_OK;
 221 }
 222
 223 static int dev_acquisition_stop(struct sr_dev_inst *sdi)
 224 {
 225         return std_serial_dev_acquisition_stop(sdi,
 226                         std_serial_dev_close, sdi->conn, LOG_PREFIX);
 227 }
 228
 229 SR_PRIV struct sr_dev_driver appa_55ii_driver_info = {
 230         .name = "appa-55ii",
 231         .longname = "APPA 55II",
 232         .api_version = 1,
 233         .init = std_init,
 234         .cleanup = std_cleanup,
 235         .scan = scan,
 236         .dev_list = std_dev_list,
 237         .dev_clear = NULL,
 238         .config_get = config_get,
 239         .config_set = config_set,
 240         .config_list = config_list,
 241         .dev_open = std_serial_dev_open,
 242         .dev_close = std_serial_dev_close,
 243         .dev_acquisition_start = dev_acquisition_start,
 244         .dev_acquisition_stop = dev_acquisition_stop,
 245         .context = NULL,
 246 };