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 | SR_CONF_SET,
  36         SR_CONF_CURRENT | SR_CONF_SET,
  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 sr_dev_inst *sdi;
  43         struct sr_config *src;
  44         struct sr_serial_dev_inst *serial;
  45         GSList *l;
  46         const char *conn, *serialcomm;
  47
  48         conn = serialcomm = NULL;
  49
  50         for (l = options; l; l = l->next) {
  51                 src = l->data;
  52                 switch (src->key) {
  53                 case SR_CONF_CONN:
  54                         conn = g_variant_get_string(src->data, NULL);
  55                         break;
  56                 case SR_CONF_SERIALCOMM:
  57                         serialcomm = g_variant_get_string(src->data, NULL);
  58                         break;
  59                 }
  60         }
  61         if (!conn)
  62                 return NULL;
  63         if (!serialcomm)
  64                 serialcomm = SERIALCOMM;
  65
  66         /*
  67          * We cannot scan for this device because it is write-only.
  68          * So just check that the port parameters are valid and assume that
  69          * the device is there.
  70          */
  71
  72         serial = sr_serial_dev_inst_new(conn, serialcomm);
  73
  74         if (serial_open(serial, SERIAL_RDWR) != SR_OK)
  75                 return NULL;
  76
  77         serial_flush(serial);
  78         serial_close(serial);
  79
  80         sr_spew("Conrad DIGI 35 CPU assumed at %s.", conn);
  81
  82         sdi = g_malloc0(sizeof(struct sr_dev_inst));
  83         sdi->status = SR_ST_INACTIVE;
  84         sdi->vendor = g_strdup("Conrad");
  85         sdi->model = g_strdup("DIGI 35 CPU");
  86         sdi->conn = serial;
  87         sdi->priv = NULL;
  88         sr_channel_new(sdi, 0, SR_CHANNEL_ANALOG, TRUE, "CH1");
  89
  90         return std_scan_complete(di, g_slist_append(NULL, sdi));
  91 }
  92
  93 static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi,
  94                 const struct sr_channel_group *cg)
  95 {
  96         int ret;
  97         double dblval;
  98
  99         (void)cg;
 100
 101         switch (key) {
 102         case SR_CONF_VOLTAGE:
 103                 dblval = g_variant_get_double(data);
 104                 if ((dblval < 0.0) || (dblval > 35.0)) {
 105                         sr_err("Voltage out of range (0 - 35.0)!");
 106                         return SR_ERR_ARG;
 107                 }
 108                 ret = send_msg1(sdi, 'V', (int) (dblval * 10 + 0.5));
 109                 break;
 110         case SR_CONF_CURRENT:
 111                 dblval = g_variant_get_double(data);
 112                 if ((dblval < 0.01) || (dblval > 2.55)) {
 113                         sr_err("Current out of range (0 - 2.55)!");
 114                         return SR_ERR_ARG;
 115                 }
 116                 ret = send_msg1(sdi, 'C', (int) (dblval * 100 + 0.5));
 117                 break;
 118         case SR_CONF_OVER_CURRENT_PROTECTION_ENABLED:
 119                 if (g_variant_get_boolean(data))
 120                         ret = send_msg1(sdi, 'V', 900);
 121                 else /* Constant current mode */
 122                         ret = send_msg1(sdi, 'V', 901);
 123                 break;
 124         default:
 125                 ret = SR_ERR_NA;
 126         }
 127
 128         return ret;
 129 }
 130
 131 static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
 132                 const struct sr_channel_group *cg)
 133 {
 134         return STD_CONFIG_LIST(key, data, sdi, cg, scanopts, drvopts, devopts);
 135 }
 136
 137 static struct sr_dev_driver conrad_digi_35_cpu_driver_info = {
 138         .name = "conrad-digi-35-cpu",
 139         .longname = "Conrad DIGI 35 CPU",
 140         .api_version = 1,
 141         .init = std_init,
 142         .cleanup = std_cleanup,
 143         .scan = scan,
 144         .dev_list = std_dev_list,
 145         .dev_clear = std_dev_clear,
 146         .config_get = NULL,
 147         .config_set = config_set,
 148         .config_list = config_list,
 149         .dev_open = std_serial_dev_open,
 150         .dev_close = std_serial_dev_close,
 151         .dev_acquisition_start = std_dummy_dev_acquisition_start,
 152         .dev_acquisition_stop = std_dummy_dev_acquisition_stop,
 153         .context = NULL,
 154 };
 155 SR_REGISTER_DEV_DRIVER(conrad_digi_35_cpu_driver_info);