src/hardware/conrad-digi-35-cpu/api.c

   1 /*
   2  * This file is part of the libsigrok project.
   3  *
   4  * Copyright (C) 2014 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 #define SERIALCOMM "9600/8n1"
  24
  25 static const uint32_t scanopts[] = {
  26         SR_CONF_CONN,
  27         SR_CONF_SERIALCOMM,
  28 };
  29
  30 static const uint32_t drvopts[] = {
  31         SR_CONF_POWER_SUPPLY,
  32 };
  33
  34 static const uint32_t devopts[] = {
  35         SR_CONF_VOLTAGE_TARGET | SR_CONF_SET | SR_CONF_LIST,
  36         SR_CONF_CURRENT_LIMIT | SR_CONF_SET | SR_CONF_LIST,
  37         SR_CONF_OVER_CURRENT_PROTECTION_ENABLED | SR_CONF_SET,
  38 };
  39
  40 static GSList *scan(struct sr_dev_driver *di, GSList *options)
  41 {
  42         struct dev_context *devc;
  43         struct sr_dev_inst *sdi;
  44         struct sr_config *src;
  45         struct sr_serial_dev_inst *serial;
  46         GSList *l;
  47         const char *conn, *serialcomm;
  48
  49         conn = serialcomm = NULL;
  50
  51         for (l = options; l; l = l->next) {
  52                 src = l->data;
  53                 switch (src->key) {
  54                 case SR_CONF_CONN:
  55                         conn = g_variant_get_string(src->data, NULL);
  56                         break;
  57                 case SR_CONF_SERIALCOMM:
  58                         serialcomm = g_variant_get_string(src->data, NULL);
  59                         break;
  60                 }
  61         }
  62         if (!conn)
  63                 return NULL;
  64         if (!serialcomm)
  65                 serialcomm = SERIALCOMM;
  66
  67         /*
  68          * We cannot scan for this device because it is write-only.
  69          * So just check that the port parameters are valid and assume that
  70          * the device is there.
  71          */
  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         serial_flush(serial);
  79         serial_close(serial);
  80
  81         sr_spew("Conrad DIGI 35 CPU assumed at %s.", conn);
  82
  83         sdi = g_malloc0(sizeof(struct sr_dev_inst));
  84         sdi->status = SR_ST_INACTIVE;
  85         sdi->vendor = g_strdup("Conrad");
  86         sdi->model = g_strdup("DIGI 35 CPU");
  87         devc = g_malloc0(sizeof(struct dev_context));
  88         sr_sw_limits_init(&devc->limits);
  89         sdi->inst_type = SR_INST_SERIAL;
  90         sdi->conn = serial;
  91         sdi->priv = devc;
  92         sr_channel_new(sdi, 0, SR_CHANNEL_ANALOG, TRUE, "CH1");
  93
  94         return std_scan_complete(di, g_slist_append(NULL, sdi));
  95 }
  96
  97 static int config_set(uint32_t key, GVariant *data,
  98         const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
  99 {
 100         double dblval;
 101
 102         (void)cg;
 103
 104         switch (key) {
 105         case SR_CONF_VOLTAGE_TARGET:
 106                 dblval = g_variant_get_double(data);
 107                 if ((dblval < 0.0) || (dblval > 35.0)) {
 108                         sr_err("Voltage out of range (0 - 35.0)!");
 109                         return SR_ERR_ARG;
 110                 }
 111                 return send_msg1(sdi, 'V', (int) (dblval * 10 + 0.5));
 112         case SR_CONF_CURRENT_LIMIT:
 113                 dblval = g_variant_get_double(data);
 114                 if ((dblval < 0.00) || (dblval > 2.55)) {
 115                         sr_err("Current out of range (0 - 2.55)!");
 116                         return SR_ERR_ARG;
 117                 }
 118                 return send_msg1(sdi, 'C', (int) (dblval * 100 + 0.5));
 119         case SR_CONF_OVER_CURRENT_PROTECTION_ENABLED:
 120                 if (g_variant_get_boolean(data))
 121                         return send_msg1(sdi, 'V', 900);
 122                 else /* Constant current mode */
 123                         return send_msg1(sdi, 'V', 901);
 124         default:
 125                 return SR_ERR_NA;
 126         }
 127
 128         return SR_OK;
 129 }
 130
 131 static int config_list(uint32_t key, GVariant **data,
 132         const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 133 {
 134         switch (key) {
 135         case SR_CONF_SCAN_OPTIONS:
 136         case SR_CONF_DEVICE_OPTIONS:
 137                 return STD_CONFIG_LIST(key, data, sdi, cg, scanopts, drvopts, devopts);
 138         case SR_CONF_VOLTAGE_TARGET:
 139                 *data = std_gvar_min_max_step(0.0, 35.0, 0.1);
 140                 break;
 141         case SR_CONF_CURRENT_LIMIT:
 142                 *data = std_gvar_min_max_step(0.0, 2.55, 0.01);
 143                 break;
 144         default:
 145                 return SR_ERR_NA;
 146         }
 147
 148         return SR_OK;
 149 }
 150
 151 static struct sr_dev_driver conrad_digi_35_cpu_driver_info = {
 152         .name = "conrad-digi-35-cpu",
 153         .longname = "Conrad DIGI 35 CPU",
 154         .api_version = 1,
 155         .init = std_init,
 156         .cleanup = std_cleanup,
 157         .scan = scan,
 158         .dev_list = std_dev_list,
 159         .dev_clear = std_dev_clear,
 160         .config_get = NULL,
 161         .config_set = config_set,
 162         .config_list = config_list,
 163         .dev_open = std_serial_dev_open,
 164         .dev_close = std_serial_dev_close,
 165         .dev_acquisition_start = std_dummy_dev_acquisition_start,
 166         .dev_acquisition_stop = std_dummy_dev_acquisition_stop,
 167         .context = NULL,
 168 };
 169 SR_REGISTER_DEV_DRIVER(conrad_digi_35_cpu_driver_info);