src/hardware/norma-dmm/api.c

   1 /*
   2  * This file is part of the libsigrok project.
   3  *
   4  * Copyright (C) 2013 Matthias Heidbrink <m-sigrok@heidbrink.biz>
   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 "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_MULTIMETER,
  30 };
  31
  32 static const uint32_t devopts[] = {
  33         SR_CONF_CONTINUOUS,
  34         SR_CONF_LIMIT_SAMPLES | SR_CONF_SET,
  35         SR_CONF_LIMIT_MSEC | SR_CONF_SET,
  36 };
  37
  38 #define BUF_MAX 50
  39
  40 #define SERIALCOMM "4800/8n1/dtr=1/rts=0/flow=1"
  41
  42 static struct sr_dev_driver norma_dmm_driver_info;
  43 static struct sr_dev_driver siemens_b102x_driver_info;
  44
  45 static const char *get_brandstr(struct sr_dev_driver *drv)
  46 {
  47         return (drv == &norma_dmm_driver_info) ? "Norma" : "Siemens";
  48 }
  49
  50 static const char *get_typestr(int type, struct sr_dev_driver *drv)
  51 {
  52         static const char *nameref[5][2] = {
  53                 {"DM910", "B1024"},
  54                 {"DM920", "B1025"},
  55                 {"DM930", "B1026"},
  56                 {"DM940", "B1027"},
  57                 {"DM950", "B1028"},
  58         };
  59
  60         if ((type < 1) || (type > 5))
  61                 return "Unknown type!";
  62
  63         return nameref[type - 1][(drv == &siemens_b102x_driver_info)];
  64 }
  65
  66 static GSList *scan(struct sr_dev_driver *drv, GSList *options)
  67 {
  68         struct sr_dev_inst *sdi;
  69         struct dev_context *devc;
  70         struct sr_config *src;
  71         struct sr_serial_dev_inst *serial;
  72         GSList *l, *devices;
  73         int len, cnt, auxtype;
  74         const char *conn, *serialcomm;
  75         char *buf;
  76         char req[10];
  77
  78         devices = NULL;
  79         conn = serialcomm = NULL;
  80
  81         for (l = options; l; l = l->next) {
  82                 src = l->data;
  83                 switch (src->key) {
  84                 case SR_CONF_CONN:
  85                         conn = g_variant_get_string(src->data, NULL);
  86                         break;
  87                 case SR_CONF_SERIALCOMM:
  88                         serialcomm = g_variant_get_string(src->data, NULL);
  89                         break;
  90                 }
  91         }
  92         if (!conn)
  93                 return NULL;
  94         if (!serialcomm)
  95                 serialcomm = SERIALCOMM;
  96
  97         serial = sr_serial_dev_inst_new(conn, serialcomm);
  98
  99         if (serial_open(serial, SERIAL_RDWR) != SR_OK)
 100                 return NULL;
 101
 102         serial_flush(serial);
 103
 104         buf = g_malloc(BUF_MAX);
 105
 106         snprintf(req, sizeof(req), "%s\r\n",
 107                  nmadmm_requests[NMADMM_REQ_IDN].req_str);
 108         g_usleep(150 * 1000); /* Wait a little to allow serial port to settle. */
 109         for (cnt = 0; cnt < 7; cnt++) {
 110                 if (serial_write_blocking(serial, req, strlen(req),
 111                                 serial_timeout(serial, strlen(req))) < 0) {
 112                         sr_err("Unable to send identification request.");
 113                         g_free(buf);
 114                         return NULL;
 115                 }
 116                 len = BUF_MAX;
 117                 serial_readline(serial, &buf, &len, NMADMM_TIMEOUT_MS);
 118                 if (!len)
 119                         continue;
 120                 buf[BUF_MAX - 1] = '\0';
 121
 122                 /* Match ID string, e.g. "1834 065 V1.06,IF V1.02" (DM950). */
 123                 if (g_regex_match_simple("^1834 [^,]*,IF V*", (char *)buf, 0, 0)) {
 124                         auxtype = xgittoint(buf[7]);
 125                         sr_spew("%s %s DMM %s detected!", get_brandstr(drv), get_typestr(auxtype, drv), buf + 9);
 126
 127                         sdi = g_malloc0(sizeof(struct sr_dev_inst));
 128                         sdi->status = SR_ST_INACTIVE;
 129                         sdi->vendor = g_strdup(get_brandstr(drv));
 130                         sdi->model = g_strdup(get_typestr(auxtype, drv));
 131                         sdi->version = g_strdup(buf + 9);
 132                         devc = g_malloc0(sizeof(struct dev_context));
 133                         sr_sw_limits_init(&devc->limits);
 134                         devc->type = auxtype;
 135                         sdi->conn = serial;
 136                         sdi->priv = devc;
 137                         sr_channel_new(sdi, 0, SR_CHANNEL_ANALOG, TRUE, "P1");
 138                         devices = g_slist_append(devices, sdi);
 139                         break;
 140                 }
 141
 142                 /*
 143                  * The interface of the DM9x0 contains a cap that needs to
 144                  * charge for up to 10s before the interface works, if not
 145                  * powered externally. Therefore wait a little to improve
 146                  * chances.
 147                  */
 148                 if (cnt == 3) {
 149                         sr_info("Waiting 5s to allow interface to settle.");
 150                         g_usleep(5 * 1000 * 1000);
 151                 }
 152         }
 153
 154         g_free(buf);
 155
 156         serial_close(serial);
 157         if (!devices)
 158                 sr_serial_dev_inst_free(serial);
 159
 160         return std_scan_complete(drv, devices);
 161 }
 162
 163 static int config_set(uint32_t key, GVariant *data,
 164         const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 165 {
 166         struct dev_context *devc;
 167
 168         (void)cg;
 169
 170         devc = sdi->priv;
 171
 172         return sr_sw_limits_config_set(&devc->limits, key, data);
 173 }
 174
 175 static int config_list(uint32_t key, GVariant **data,
 176         const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 177 {
 178         return STD_CONFIG_LIST(key, data, sdi, cg, scanopts, drvopts, devopts);
 179 }
 180
 181 static int dev_acquisition_start(const struct sr_dev_inst *sdi)
 182 {
 183         struct dev_context *devc;
 184         struct sr_serial_dev_inst *serial;
 185
 186         devc = sdi->priv;
 187
 188         sr_sw_limits_acquisition_start(&devc->limits);
 189         std_session_send_df_header(sdi);
 190
 191         serial = sdi->conn;
 192         serial_source_add(sdi->session, serial, G_IO_IN, 100,
 193                         norma_dmm_receive_data, (void *)sdi);
 194
 195         return SR_OK;
 196 }
 197
 198 static struct sr_dev_driver norma_dmm_driver_info = {
 199         .name = "norma-dmm",
 200         .longname = "Norma DM9x0 DMMs",
 201         .api_version = 1,
 202         .init = std_init,
 203         .cleanup = std_cleanup,
 204         .scan = scan,
 205         .dev_list = std_dev_list,
 206         .dev_clear = std_dev_clear,
 207         .config_get = NULL,
 208         .config_set = config_set,
 209         .config_list = config_list,
 210         .dev_open = std_serial_dev_open,
 211         .dev_close = std_serial_dev_close,
 212         .dev_acquisition_start = dev_acquisition_start,
 213         .dev_acquisition_stop = std_serial_dev_acquisition_stop,
 214         .context = NULL,
 215 };
 216 SR_REGISTER_DEV_DRIVER(norma_dmm_driver_info);
 217
 218 static struct sr_dev_driver siemens_b102x_driver_info = {
 219         .name = "siemens-b102x",
 220         .longname = "Siemens B102x DMMs",
 221         .api_version = 1,
 222         .init = std_init,
 223         .cleanup = std_cleanup,
 224         .scan = scan,
 225         .dev_list = std_dev_list,
 226         .dev_clear = std_dev_clear,
 227         .config_get = NULL,
 228         .config_set = config_set,
 229         .config_list = config_list,
 230         .dev_open = std_serial_dev_open,
 231         .dev_close = std_serial_dev_close,
 232         .dev_acquisition_start = dev_acquisition_start,
 233         .dev_acquisition_stop = std_serial_dev_acquisition_stop,
 234         .context = NULL,
 235 };
 236 SR_REGISTER_DEV_DRIVER(siemens_b102x_driver_info);