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 /** @file
  21  *  <em>Conrad DIGI 35 CPU</em> power supply driver
  22  *  @internal
  23  */
  24
  25 #include <config.h>
  26 #include "protocol.h"
  27
  28 #define SERIALCOMM "9600/8n1"
  29
  30 static const uint32_t scanopts[] = {
  31         SR_CONF_CONN,
  32         SR_CONF_SERIALCOMM,
  33 };
  34
  35 static const uint32_t devopts[] = {
  36         SR_CONF_POWER_SUPPLY,
  37         SR_CONF_VOLTAGE | SR_CONF_SET,
  38         SR_CONF_CURRENT | SR_CONF_SET,
  39         SR_CONF_OVER_CURRENT_PROTECTION_ENABLED | SR_CONF_SET,
  40 };
  41
  42 static GSList *scan(struct sr_dev_driver *di, GSList *options)
  43 {
  44         struct sr_dev_inst *sdi;
  45         struct sr_config *src;
  46         struct sr_serial_dev_inst *serial;
  47         GSList *l;
  48         const char *conn, *serialcomm;
  49
  50         conn = serialcomm = NULL;
  51
  52         for (l = options; l; l = l->next) {
  53                 src = l->data;
  54                 switch (src->key) {
  55                 case SR_CONF_CONN:
  56                         conn = g_variant_get_string(src->data, NULL);
  57                         break;
  58                 case SR_CONF_SERIALCOMM:
  59                         serialcomm = g_variant_get_string(src->data, NULL);
  60                         break;
  61                 }
  62         }
  63         if (!conn)
  64                 return NULL;
  65         if (!serialcomm)
  66                 serialcomm = SERIALCOMM;
  67
  68         /*
  69          * We cannot scan for this device because it is write-only.
  70          * So just check that the port parameters are valid and assume that
  71          * the device is there.
  72          */
  73
  74         serial = sr_serial_dev_inst_new(conn, serialcomm);
  75
  76         if (serial_open(serial, SERIAL_RDWR) != SR_OK)
  77                 return NULL;
  78
  79         serial_flush(serial);
  80         serial_close(serial);
  81
  82         sr_spew("Conrad DIGI 35 CPU assumed at %s.", conn);
  83
  84         sdi = g_malloc0(sizeof(struct sr_dev_inst));
  85         sdi->status = SR_ST_INACTIVE;
  86         sdi->vendor = g_strdup("Conrad");
  87         sdi->model = g_strdup("DIGI 35 CPU");
  88         sdi->conn = serial;
  89         sdi->priv = NULL;
  90         sr_channel_new(sdi, 0, SR_CHANNEL_ANALOG, TRUE, "CH1");
  91
  92         return std_scan_complete(di, g_slist_append(NULL, sdi));
  93 }
  94
  95 static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi,
  96                 const struct sr_channel_group *cg)
  97 {
  98         int ret;
  99         double dblval;
 100
 101         (void)cg;
 102
 103         if (sdi->status != SR_ST_ACTIVE)
 104                 return SR_ERR_DEV_CLOSED;
 105
 106         switch (key) {
 107         case SR_CONF_VOLTAGE:
 108                 dblval = g_variant_get_double(data);
 109                 if ((dblval < 0.0) || (dblval > 35.0)) {
 110                         sr_err("Voltage out of range (0 - 35.0)!");
 111                         return SR_ERR_ARG;
 112                 }
 113                 ret = send_msg1(sdi, 'V', (int) (dblval * 10 + 0.5));
 114                 break;
 115         case SR_CONF_CURRENT:
 116                 dblval = g_variant_get_double(data);
 117                 if ((dblval < 0.01) || (dblval > 2.55)) {
 118                         sr_err("Current out of range (0 - 2.55)!");
 119                         return SR_ERR_ARG;
 120                 }
 121                 ret = send_msg1(sdi, 'C', (int) (dblval * 100 + 0.5));
 122                 break;
 123         case SR_CONF_OVER_CURRENT_PROTECTION_ENABLED:
 124                 if (g_variant_get_boolean(data))
 125                         ret = send_msg1(sdi, 'V', 900);
 126                 else /* Constant current mode */
 127                         ret = send_msg1(sdi, 'V', 901);
 128                 break;
 129         default:
 130                 ret = SR_ERR_NA;
 131         }
 132
 133         return ret;
 134 }
 135
 136 static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
 137                 const struct sr_channel_group *cg)
 138 {
 139         int ret;
 140
 141         (void)sdi;
 142         (void)cg;
 143
 144         ret = SR_OK;
 145         switch (key) {
 146         case SR_CONF_SCAN_OPTIONS:
 147                 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 148                                 scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
 149                 break;
 150         case SR_CONF_DEVICE_OPTIONS:
 151                 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 152                                 devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
 153                 break;
 154         default:
 155                 return SR_ERR_NA;
 156         }
 157
 158         return ret;
 159 }
 160
 161 static int dev_acquisition_start(const struct sr_dev_inst *sdi)
 162 {
 163         if (sdi->status != SR_ST_ACTIVE)
 164                 return SR_ERR_DEV_CLOSED;
 165
 166         return SR_OK;
 167 }
 168
 169 static int dev_acquisition_stop(struct sr_dev_inst *sdi)
 170 {
 171         if (sdi->status != SR_ST_ACTIVE)
 172                 return SR_ERR_DEV_CLOSED;
 173
 174         return SR_OK;
 175 }
 176
 177 static struct sr_dev_driver conrad_digi_35_cpu_driver_info = {
 178         .name = "conrad-digi-35-cpu",
 179         .longname = "Conrad DIGI 35 CPU",
 180         .api_version = 1,
 181         .init = std_init,
 182         .cleanup = std_cleanup,
 183         .scan = scan,
 184         .dev_list = std_dev_list,
 185         .dev_clear = NULL,
 186         .config_get = NULL,
 187         .config_set = config_set,
 188         .config_list = config_list,
 189         .dev_open = std_serial_dev_open,
 190         .dev_close = std_serial_dev_close,
 191         .dev_acquisition_start = dev_acquisition_start,
 192         .dev_acquisition_stop = dev_acquisition_stop,
 193         .context = NULL,
 194 };
 195 SR_REGISTER_DEV_DRIVER(conrad_digi_35_cpu_driver_info);