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 <config.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_temp[] = {
  30         SR_CONF_THERMOMETER,
  31 };
  32
  33 static const uint32_t drvopts_temp_hum[] = {
  34         SR_CONF_THERMOMETER,
  35         SR_CONF_HYGROMETER,
  36 };
  37
  38 static const uint32_t devopts[] = {
  39         SR_CONF_CONTINUOUS | SR_CONF_SET,
  40         SR_CONF_LIMIT_SAMPLES | SR_CONF_SET,
  41         SR_CONF_LIMIT_MSEC | SR_CONF_SET,
  42 };
  43
  44 SR_PRIV struct sr_dev_driver mic_98581_driver_info;
  45 SR_PRIV struct sr_dev_driver mic_98583_driver_info;
  46
  47 SR_PRIV const struct mic_dev_info mic_devs[] = {
  48         {
  49                 "MIC", "98581", "38400/8n2", 32000, TRUE, FALSE, 6,
  50                 packet_valid_temp,
  51                 &mic_98581_driver_info, receive_data_MIC_98581,
  52         },
  53         {
  54                 "MIC", "98583", "38400/8n2", 32000, TRUE, TRUE, 10,
  55                 packet_valid_temp_hum,
  56                 &mic_98583_driver_info, receive_data_MIC_98583,
  57         },
  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_serial_dev_inst *serial;
  71         GSList *devices;
  72
  73         serial = sr_serial_dev_inst_new(conn, serialcomm);
  74
  75         if (serial_open(serial, SERIAL_RDWR) != SR_OK)
  76                 return NULL;
  77
  78         drvc = mic_devs[idx].di->context;
  79         devices = NULL;
  80         serial_flush(serial);
  81
  82         /* TODO: Query device type. */
  83         // ret = mic_cmd_get_device_info(serial);
  84
  85         sr_info("Found device on port %s.", conn);
  86
  87         /* TODO: Fill in version from protocol response. */
  88         sdi = g_malloc0(sizeof(struct sr_dev_inst));
  89         sdi->status = SR_ST_INACTIVE;
  90         sdi->vendor = g_strdup(mic_devs[idx].vendor);
  91         sdi->model = g_strdup(mic_devs[idx].device);
  92         devc = g_malloc0(sizeof(struct dev_context));
  93         sdi->inst_type = SR_INST_SERIAL;
  94         sdi->conn = serial;
  95         sdi->priv = devc;
  96         sdi->driver = mic_devs[idx].di;
  97
  98         sr_channel_new(sdi, 0, SR_CHANNEL_ANALOG, TRUE, "Temperature");
  99
 100         if (mic_devs[idx].has_humidity)
 101                 sr_channel_new(sdi, 1, SR_CHANNEL_ANALOG, TRUE, "Humidity");
 102
 103         drvc->instances = g_slist_append(drvc->instances, sdi);
 104         devices = g_slist_append(devices, sdi);
 105
 106         serial_close(serial);
 107
 108         return devices;
 109 }
 110
 111 static GSList *scan(GSList *options, int idx)
 112 {
 113         struct sr_config *src;
 114         GSList *l, *devices;
 115         const char *conn, *serialcomm;
 116
 117         conn = serialcomm = NULL;
 118         for (l = options; l; l = l->next) {
 119                 src = l->data;
 120                 switch (src->key) {
 121                 case SR_CONF_CONN:
 122                         conn = g_variant_get_string(src->data, NULL);
 123                         break;
 124                 case SR_CONF_SERIALCOMM:
 125                         serialcomm = g_variant_get_string(src->data, NULL);
 126                         break;
 127                 }
 128         }
 129         if (!conn)
 130                 return NULL;
 131
 132         if (serialcomm) {
 133                 /* Use the provided comm specs. */
 134                 devices = mic_scan(conn, serialcomm, idx);
 135         } else {
 136                 /* Try the default. */
 137                 devices = mic_scan(conn, mic_devs[idx].conn, idx);
 138         }
 139
 140         return devices;
 141 }
 142
 143 static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi,
 144                 const struct sr_channel_group *cg)
 145 {
 146         struct dev_context *devc;
 147
 148         (void)cg;
 149
 150         if (sdi->status != SR_ST_ACTIVE)
 151                 return SR_ERR_DEV_CLOSED;
 152
 153         devc = sdi->priv;
 154
 155         switch (key) {
 156         case SR_CONF_LIMIT_SAMPLES:
 157                 devc->limit_samples = g_variant_get_uint64(data);
 158                 break;
 159         case SR_CONF_LIMIT_MSEC:
 160                 devc->limit_msec = g_variant_get_uint64(data);
 161                 break;
 162         default:
 163                 return SR_ERR_NA;
 164         }
 165
 166         return SR_OK;
 167 }
 168
 169 static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
 170                 const struct sr_channel_group *cg, int idx)
 171 {
 172         (void)cg;
 173
 174         switch (key) {
 175         case SR_CONF_SCAN_OPTIONS:
 176                 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 177                                 scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
 178                 break;
 179         case SR_CONF_DEVICE_OPTIONS:
 180                 if (!sdi && !mic_devs[idx].has_humidity) {
 181                         *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 182                                 drvopts_temp, ARRAY_SIZE(drvopts_temp),
 183                                 sizeof(uint32_t));
 184                 } else if (!sdi && mic_devs[idx].has_humidity) {
 185                         *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 186                                 drvopts_temp_hum, ARRAY_SIZE(drvopts_temp_hum),
 187                                 sizeof(uint32_t));
 188                 } else {
 189                         *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 190                                 devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
 191                 }
 192                 break;
 193         default:
 194                 return SR_ERR_NA;
 195         }
 196
 197         return SR_OK;
 198 }
 199
 200 static int dev_acquisition_start(const struct sr_dev_inst *sdi, int idx)
 201 {
 202         struct dev_context *devc;
 203         struct sr_serial_dev_inst *serial;
 204
 205         if (sdi->status != SR_ST_ACTIVE)
 206                 return SR_ERR_DEV_CLOSED;
 207
 208         devc = sdi->priv;
 209         devc->num_samples = 0;
 210         devc->starttime = g_get_monotonic_time();
 211
 212         std_session_send_df_header(sdi, LOG_PREFIX);
 213
 214         /* Poll every 100ms, or whenever some data comes in. */
 215         serial = sdi->conn;
 216         serial_source_add(sdi->session, serial, G_IO_IN, 100,
 217                       mic_devs[idx].receive_data, (void *)sdi);
 218
 219         return SR_OK;
 220 }
 221
 222 static int dev_acquisition_stop(struct sr_dev_inst *sdi)
 223 {
 224         return std_serial_dev_acquisition_stop(sdi, std_serial_dev_close,
 225                         sdi->conn, LOG_PREFIX);
 226 }
 227
 228 /* Driver-specific API function wrappers */
 229 #define HW_INIT(X) \
 230 static int init_##X(struct sr_dev_driver *di, struct sr_context *sr_ctx) { \
 231         (void)di; return init(sr_ctx, X); }
 232 #define HW_SCAN(X) \
 233 static GSList *scan_##X(struct sr_dev_driver *di, GSList *options) { \
 234         (void)di; return scan(options, X); }
 235 #define HW_CONFIG_LIST(X) \
 236 static int config_list_##X(uint32_t key, GVariant **data, \
 237 const struct sr_dev_inst *sdi, const struct sr_channel_group *cg) { \
 238 return config_list(key, data, sdi, cg, X); }
 239 #define HW_DEV_ACQUISITION_START(X) \
 240 static int dev_acquisition_start_##X(const struct sr_dev_inst *sdi \
 241 ) { return dev_acquisition_start(sdi, X); }
 242
 243 /* Driver structs and API function wrappers */
 244 #define DRV(ID, ID_UPPER, NAME, LONGNAME) \
 245 HW_INIT(ID_UPPER) \
 246 HW_SCAN(ID_UPPER) \
 247 HW_CONFIG_LIST(ID_UPPER) \
 248 HW_DEV_ACQUISITION_START(ID_UPPER) \
 249 SR_PRIV struct sr_dev_driver ID##_driver_info = { \
 250         .name = NAME, \
 251         .longname = LONGNAME, \
 252         .api_version = 1, \
 253         .init = init_##ID_UPPER, \
 254         .cleanup = std_cleanup, \
 255         .scan = scan_##ID_UPPER, \
 256         .dev_list = std_dev_list, \
 257         .config_get = NULL, \
 258         .config_set = config_set, \
 259         .config_list = config_list_##ID_UPPER, \
 260         .dev_open = std_serial_dev_open, \
 261         .dev_close = std_serial_dev_close, \
 262         .dev_acquisition_start = dev_acquisition_start_##ID_UPPER, \
 263         .dev_acquisition_stop = dev_acquisition_stop, \
 264         .context = NULL, \
 265 };
 266
 267 DRV(mic_98581, MIC_98581, "mic-98581", "MIC 98581")
 268 DRV(mic_98583, MIC_98583, "mic-98583", "MIC 98583")