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,
  40         SR_CONF_LIMIT_SAMPLES | SR_CONF_SET,
  41         SR_CONF_LIMIT_MSEC | SR_CONF_SET,
  42 };
  43
  44 static struct sr_dev_driver mic_98581_driver_info;
  45 static 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 GSList *mic_scan(const char *conn, const char *serialcomm, int idx)
  61 {
  62         struct sr_dev_inst *sdi;
  63         struct dev_context *devc;
  64         struct sr_serial_dev_inst *serial;
  65
  66         serial = sr_serial_dev_inst_new(conn, serialcomm);
  67
  68         if (serial_open(serial, SERIAL_RDWR) != SR_OK)
  69                 return NULL;
  70
  71         serial_flush(serial);
  72
  73         /* TODO: Query device type. */
  74         // ret = mic_cmd_get_device_info(serial);
  75
  76         sr_info("Found device on port %s.", conn);
  77
  78         /* TODO: Fill in version from protocol response. */
  79         sdi = g_malloc0(sizeof(struct sr_dev_inst));
  80         sdi->status = SR_ST_INACTIVE;
  81         sdi->vendor = g_strdup(mic_devs[idx].vendor);
  82         sdi->model = g_strdup(mic_devs[idx].device);
  83         devc = g_malloc0(sizeof(struct dev_context));
  84         sr_sw_limits_init(&devc->limits);
  85         sdi->inst_type = SR_INST_SERIAL;
  86         sdi->conn = serial;
  87         sdi->priv = devc;
  88
  89         sr_channel_new(sdi, 0, SR_CHANNEL_ANALOG, TRUE, "Temperature");
  90
  91         if (mic_devs[idx].has_humidity)
  92                 sr_channel_new(sdi, 1, SR_CHANNEL_ANALOG, TRUE, "Humidity");
  93
  94         serial_close(serial);
  95
  96         return std_scan_complete(mic_devs[idx].di, g_slist_append(NULL, sdi));
  97 }
  98
  99 static GSList *scan(GSList *options, int idx)
 100 {
 101         struct sr_config *src;
 102         GSList *l, *devices;
 103         const char *conn, *serialcomm;
 104
 105         conn = serialcomm = NULL;
 106         for (l = options; l; l = l->next) {
 107                 src = l->data;
 108                 switch (src->key) {
 109                 case SR_CONF_CONN:
 110                         conn = g_variant_get_string(src->data, NULL);
 111                         break;
 112                 case SR_CONF_SERIALCOMM:
 113                         serialcomm = g_variant_get_string(src->data, NULL);
 114                         break;
 115                 }
 116         }
 117         if (!conn)
 118                 return NULL;
 119
 120         if (serialcomm) {
 121                 /* Use the provided comm specs. */
 122                 devices = mic_scan(conn, serialcomm, idx);
 123         } else {
 124                 /* Try the default. */
 125                 devices = mic_scan(conn, mic_devs[idx].conn, idx);
 126         }
 127
 128         return devices;
 129 }
 130
 131 static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi,
 132                 const struct sr_channel_group *cg)
 133 {
 134         struct dev_context *devc;
 135
 136         (void)cg;
 137
 138         if (sdi->status != SR_ST_ACTIVE)
 139                 return SR_ERR_DEV_CLOSED;
 140
 141         devc = sdi->priv;
 142
 143         return sr_sw_limits_config_set(&devc->limits, key, data);
 144 }
 145
 146 static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
 147                 const struct sr_channel_group *cg, int idx)
 148 {
 149         (void)cg;
 150
 151         switch (key) {
 152         case SR_CONF_SCAN_OPTIONS:
 153                 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 154                                 scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
 155                 break;
 156         case SR_CONF_DEVICE_OPTIONS:
 157                 if (!sdi && !mic_devs[idx].has_humidity) {
 158                         *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 159                                 drvopts_temp, ARRAY_SIZE(drvopts_temp),
 160                                 sizeof(uint32_t));
 161                 } else if (!sdi && mic_devs[idx].has_humidity) {
 162                         *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 163                                 drvopts_temp_hum, ARRAY_SIZE(drvopts_temp_hum),
 164                                 sizeof(uint32_t));
 165                 } else {
 166                         *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 167                                 devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
 168                 }
 169                 break;
 170         default:
 171                 return SR_ERR_NA;
 172         }
 173
 174         return SR_OK;
 175 }
 176
 177 static int dev_acquisition_start(const struct sr_dev_inst *sdi, int idx)
 178 {
 179         struct dev_context *devc;
 180         struct sr_serial_dev_inst *serial;
 181
 182         if (sdi->status != SR_ST_ACTIVE)
 183                 return SR_ERR_DEV_CLOSED;
 184
 185         devc = sdi->priv;
 186
 187         sr_sw_limits_acquisition_start(&devc->limits);
 188         std_session_send_df_header(sdi);
 189
 190         /* Poll every 100ms, or whenever some data comes in. */
 191         serial = sdi->conn;
 192         serial_source_add(sdi->session, serial, G_IO_IN, 100,
 193                       mic_devs[idx].receive_data, (void *)sdi);
 194
 195         return SR_OK;
 196 }
 197
 198 static int dev_acquisition_stop(struct sr_dev_inst *sdi)
 199 {
 200         return std_serial_dev_acquisition_stop(sdi, std_serial_dev_close);
 201 }
 202
 203 /* Driver-specific API function wrappers */
 204 #define HW_SCAN(X) \
 205 static GSList *scan_##X(struct sr_dev_driver *di, GSList *options) { \
 206         (void)di; return scan(options, X); }
 207 #define HW_CONFIG_LIST(X) \
 208 static int config_list_##X(uint32_t key, GVariant **data, \
 209 const struct sr_dev_inst *sdi, const struct sr_channel_group *cg) { \
 210 return config_list(key, data, sdi, cg, X); }
 211 #define HW_DEV_ACQUISITION_START(X) \
 212 static int dev_acquisition_start_##X(const struct sr_dev_inst *sdi \
 213 ) { return dev_acquisition_start(sdi, X); }
 214
 215 /* Driver structs and API function wrappers */
 216 #define DRV(ID, ID_UPPER, NAME, LONGNAME) \
 217 HW_SCAN(ID_UPPER) \
 218 HW_CONFIG_LIST(ID_UPPER) \
 219 HW_DEV_ACQUISITION_START(ID_UPPER) \
 220 static struct sr_dev_driver ID##_driver_info = { \
 221         .name = NAME, \
 222         .longname = LONGNAME, \
 223         .api_version = 1, \
 224         .init = std_init, \
 225         .cleanup = std_cleanup, \
 226         .scan = scan_##ID_UPPER, \
 227         .dev_list = std_dev_list, \
 228         .config_get = NULL, \
 229         .config_set = config_set, \
 230         .config_list = config_list_##ID_UPPER, \
 231         .dev_open = std_serial_dev_open, \
 232         .dev_close = std_serial_dev_close, \
 233         .dev_acquisition_start = dev_acquisition_start_##ID_UPPER, \
 234         .dev_acquisition_stop = dev_acquisition_stop, \
 235         .context = NULL, \
 236 }; \
 237 SR_REGISTER_DEV_DRIVER(ID##_driver_info)
 238
 239 DRV(mic_98581, MIC_98581, "mic-98581", "MIC 98581")
 240 DRV(mic_98583, MIC_98583, "mic-98583", "MIC 98583")