src/hardware/mic-985xx/api.c

   1 /*
   2  * This file is part of the libsigrok project.
   3  *
   4  * Copyright (C) 2013 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 "protocol.h"
  22
  23 static const uint32_t scanopts[] = {
  24         SR_CONF_CONN,
  25         SR_CONF_SERIALCOMM,
  26 };
  27
  28 static const uint32_t drvopts[] = {
  29         SR_CONF_THERMOMETER,
  30         SR_CONF_HYGROMETER,
  31 };
  32
  33 static const uint32_t devopts[] = {
  34         SR_CONF_CONTINUOUS | SR_CONF_SET,
  35         SR_CONF_LIMIT_SAMPLES | SR_CONF_SET,
  36         SR_CONF_LIMIT_MSEC | SR_CONF_SET,
  37 };
  38
  39 SR_PRIV struct sr_dev_driver mic_98581_driver_info;
  40 SR_PRIV struct sr_dev_driver mic_98583_driver_info;
  41
  42 SR_PRIV const struct mic_dev_info mic_devs[] = {
  43         {
  44                 "MIC", "98581", "38400/8n2", 32000, TRUE, FALSE, 6,
  45                 packet_valid_temp,
  46                 &mic_98581_driver_info, receive_data_MIC_98581,
  47         },
  48         {
  49                 "MIC", "98583", "38400/8n2", 32000, TRUE, TRUE, 10,
  50                 packet_valid_temp_hum,
  51                 &mic_98583_driver_info, receive_data_MIC_98583,
  52         },
  53 };
  54
  55 static int dev_clear(int idx)
  56 {
  57         return std_dev_clear(mic_devs[idx].di, NULL);
  58 }
  59
  60 static int init(struct sr_context *sr_ctx, int idx)
  61 {
  62         return std_init(sr_ctx, mic_devs[idx].di, LOG_PREFIX);
  63 }
  64
  65 static GSList *mic_scan(const char *conn, const char *serialcomm, int idx)
  66 {
  67         struct sr_dev_inst *sdi;
  68         struct drv_context *drvc;
  69         struct dev_context *devc;
  70         struct sr_channel *ch;
  71         struct sr_serial_dev_inst *serial;
  72         GSList *devices;
  73
  74         if (!(serial = sr_serial_dev_inst_new(conn, serialcomm)))
  75                 return NULL;
  76
  77         if (serial_open(serial, SERIAL_RDWR) != SR_OK)
  78                 return NULL;
  79
  80         drvc = mic_devs[idx].di->priv;
  81         devices = NULL;
  82         serial_flush(serial);
  83
  84         /* TODO: Query device type. */
  85         // ret = mic_cmd_get_device_info(serial);
  86
  87         sr_info("Found device on port %s.", conn);
  88
  89         /* TODO: Fill in version from protocol response. */
  90         sdi = sr_dev_inst_new();
  91         sdi->status = SR_ST_INACTIVE;
  92         sdi->vendor = g_strdup(mic_devs[idx].vendor);
  93         sdi->model = g_strdup(mic_devs[idx].device);
  94
  95         if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) {
  96                 sr_err("Device context malloc failed.");
  97                 goto scan_cleanup;
  98         }
  99
 100         sdi->inst_type = SR_INST_SERIAL;
 101         sdi->conn = serial;
 102
 103         sdi->priv = devc;
 104         sdi->driver = mic_devs[idx].di;
 105
 106         if (!(ch = sr_channel_new(0, SR_CHANNEL_ANALOG, TRUE, "Temperature")))
 107                 goto scan_cleanup;
 108         sdi->channels = g_slist_append(sdi->channels, ch);
 109
 110         if (mic_devs[idx].has_humidity) {
 111                 if (!(ch = sr_channel_new(1, SR_CHANNEL_ANALOG, TRUE, "Humidity")))
 112                         goto scan_cleanup;
 113                 sdi->channels = g_slist_append(sdi->channels, ch);
 114         }
 115
 116         drvc->instances = g_slist_append(drvc->instances, sdi);
 117         devices = g_slist_append(devices, sdi);
 118
 119 scan_cleanup:
 120         serial_close(serial);
 121
 122         return devices;
 123 }
 124
 125 static GSList *scan(GSList *options, int idx)
 126 {
 127         struct sr_config *src;
 128         GSList *l, *devices;
 129         const char *conn, *serialcomm;
 130
 131         conn = serialcomm = NULL;
 132         for (l = options; l; l = l->next) {
 133                 src = l->data;
 134                 switch (src->key) {
 135                 case SR_CONF_CONN:
 136                         conn = g_variant_get_string(src->data, NULL);
 137                         break;
 138                 case SR_CONF_SERIALCOMM:
 139                         serialcomm = g_variant_get_string(src->data, NULL);
 140                         break;
 141                 }
 142         }
 143         if (!conn)
 144                 return NULL;
 145
 146         if (serialcomm) {
 147                 /* Use the provided comm specs. */
 148                 devices = mic_scan(conn, serialcomm, idx);
 149         } else {
 150                 /* Try the default. */
 151                 devices = mic_scan(conn, mic_devs[idx].conn, idx);
 152         }
 153
 154         return devices;
 155 }
 156
 157 static GSList *dev_list(int idx)
 158 {
 159         return ((struct drv_context *)(mic_devs[idx].di->priv))->instances;
 160 }
 161
 162 static int cleanup(int idx)
 163 {
 164         return dev_clear(idx);
 165 }
 166
 167 static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi,
 168                 const struct sr_channel_group *cg)
 169 {
 170         struct dev_context *devc;
 171
 172         (void)cg;
 173
 174         if (sdi->status != SR_ST_ACTIVE)
 175                 return SR_ERR_DEV_CLOSED;
 176
 177         devc = sdi->priv;
 178
 179         switch (key) {
 180         case SR_CONF_LIMIT_SAMPLES:
 181                 devc->limit_samples = g_variant_get_uint64(data);
 182                 sr_dbg("Setting sample limit to %" PRIu64 ".",
 183                        devc->limit_samples);
 184                 break;
 185         case SR_CONF_LIMIT_MSEC:
 186                 devc->limit_msec = g_variant_get_uint64(data);
 187                 sr_dbg("Setting time limit to %" PRIu64 "ms.",
 188                        devc->limit_msec);
 189                 break;
 190         default:
 191                 return SR_ERR_NA;
 192         }
 193
 194         return SR_OK;
 195 }
 196
 197 static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
 198                 const struct sr_channel_group *cg)
 199 {
 200         (void)cg;
 201
 202         switch (key) {
 203         case SR_CONF_SCAN_OPTIONS:
 204                 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 205                                 scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
 206                 break;
 207         case SR_CONF_DEVICE_OPTIONS:
 208                 if (!sdi)
 209                         *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 210                                 drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_t));
 211                 else
 212                         *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 213                                 devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
 214                 break;
 215         default:
 216                 return SR_ERR_NA;
 217         }
 218
 219         return SR_OK;
 220 }
 221
 222 static int dev_acquisition_start(const struct sr_dev_inst *sdi,
 223                                     void *cb_data, int idx)
 224 {
 225         struct dev_context *devc;
 226         struct sr_serial_dev_inst *serial;
 227
 228         if (sdi->status != SR_ST_ACTIVE)
 229                 return SR_ERR_DEV_CLOSED;
 230
 231         devc = sdi->priv;
 232         devc->cb_data = cb_data;
 233         devc->num_samples = 0;
 234         devc->starttime = g_get_monotonic_time();
 235
 236         /* Send header packet to the session bus. */
 237         std_session_send_df_header(cb_data, LOG_PREFIX);
 238
 239         /* Poll every 100ms, or whenever some data comes in. */
 240         serial = sdi->conn;
 241         serial_source_add(sdi->session, serial, G_IO_IN, 100,
 242                       mic_devs[idx].receive_data, (void *)sdi);
 243
 244         return SR_OK;
 245 }
 246
 247 static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
 248 {
 249         return std_serial_dev_acquisition_stop(sdi, cb_data, std_serial_dev_close,
 250                         sdi->conn, LOG_PREFIX);
 251 }
 252
 253 /* Driver-specific API function wrappers */
 254 #define HW_INIT(X) \
 255 static int init_##X(struct sr_context *sr_ctx) { return init(sr_ctx, X); }
 256 #define HW_CLEANUP(X) \
 257 static int cleanup_##X(void) { return cleanup(X); }
 258 #define HW_SCAN(X) \
 259 static GSList *scan_##X(GSList *options) { return scan(options, X); }
 260 #define HW_DEV_LIST(X) \
 261 static GSList *dev_list_##X(void) { return dev_list(X); }
 262 #define HW_DEV_CLEAR(X) \
 263 static int dev_clear_##X(void) { return dev_clear(X); }
 264 #define HW_DEV_ACQUISITION_START(X) \
 265 static int dev_acquisition_start_##X(const struct sr_dev_inst *sdi, \
 266 void *cb_data) { return dev_acquisition_start(sdi, cb_data, X); }
 267
 268 /* Driver structs and API function wrappers */
 269 #define DRV(ID, ID_UPPER, NAME, LONGNAME) \
 270 HW_INIT(ID_UPPER) \
 271 HW_CLEANUP(ID_UPPER) \
 272 HW_SCAN(ID_UPPER) \
 273 HW_DEV_LIST(ID_UPPER) \
 274 HW_DEV_CLEAR(ID_UPPER) \
 275 HW_DEV_ACQUISITION_START(ID_UPPER) \
 276 SR_PRIV struct sr_dev_driver ID##_driver_info = { \
 277         .name = NAME, \
 278         .longname = LONGNAME, \
 279         .api_version = 1, \
 280         .init = init_##ID_UPPER, \
 281         .cleanup = cleanup_##ID_UPPER, \
 282         .scan = scan_##ID_UPPER, \
 283         .dev_list = dev_list_##ID_UPPER, \
 284         .dev_clear = dev_clear_##ID_UPPER, \
 285         .config_get = NULL, \
 286         .config_set = config_set, \
 287         .config_list = config_list, \
 288         .dev_open = std_serial_dev_open, \
 289         .dev_close = std_serial_dev_close, \
 290         .dev_acquisition_start = dev_acquisition_start_##ID_UPPER, \
 291         .dev_acquisition_stop = dev_acquisition_stop, \
 292         .priv = NULL, \
 293 };
 294
 295 DRV(mic_98581, MIC_98581, "mic-98581", "MIC 98581")
 296 DRV(mic_98583, MIC_98583, "mic-98583", "MIC 98583")