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 SR_PRIV struct sr_dev_driver conrad_digi_35_cpu_driver_info;
  43
  44 static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
  45 {
  46         return std_init(sr_ctx, di, LOG_PREFIX);
  47 }
  48
  49 static GSList *scan(struct sr_dev_driver *di, GSList *options)
  50 {
  51         struct sr_dev_inst *sdi;
  52         struct drv_context *drvc;
  53         struct sr_config *src;
  54         struct sr_serial_dev_inst *serial;
  55         GSList *l, *devices;
  56         const char *conn, *serialcomm;
  57
  58         devices = NULL;
  59         drvc = di->context;
  60         drvc->instances = NULL;
  61         conn = serialcomm = NULL;
  62
  63         for (l = options; l; l = l->next) {
  64                 src = l->data;
  65                 switch (src->key) {
  66                 case SR_CONF_CONN:
  67                         conn = g_variant_get_string(src->data, NULL);
  68                         break;
  69                 case SR_CONF_SERIALCOMM:
  70                         serialcomm = g_variant_get_string(src->data, NULL);
  71                         break;
  72                 }
  73         }
  74         if (!conn)
  75                 return NULL;
  76         if (!serialcomm)
  77                 serialcomm = SERIALCOMM;
  78
  79         /*
  80          * We cannot scan for this device because it is write-only.
  81          * So just check that the port parameters are valid and assume that
  82          * the device is there.
  83          */
  84
  85         serial = sr_serial_dev_inst_new(conn, serialcomm);
  86
  87         if (serial_open(serial, SERIAL_RDWR) != SR_OK)
  88                 return NULL;
  89
  90         serial_flush(serial);
  91         serial_close(serial);
  92
  93         sr_spew("Conrad DIGI 35 CPU assumed at %s.", conn);
  94
  95         sdi = g_malloc0(sizeof(struct sr_dev_inst));
  96         sdi->status = SR_ST_ACTIVE;
  97         sdi->vendor = g_strdup("Conrad");
  98         sdi->model = g_strdup("DIGI 35 CPU");
  99         sdi->conn = serial;
 100         sdi->priv = NULL;
 101         sdi->driver = di;
 102         sr_channel_new(sdi, 0, SR_CHANNEL_ANALOG, TRUE, "CH1");
 103         drvc->instances = g_slist_append(drvc->instances, sdi);
 104         devices = g_slist_append(devices, sdi);
 105
 106         return devices;
 107 }
 108
 109 static GSList *dev_list(const struct sr_dev_driver *di)
 110 {
 111         return ((struct drv_context *)(di->context))->instances;
 112 }
 113
 114 static int cleanup(const struct sr_dev_driver *di)
 115 {
 116         return std_dev_clear(di, NULL);
 117 }
 118
 119 static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi,
 120                 const struct sr_channel_group *cg)
 121 {
 122         int ret;
 123         double dblval;
 124
 125         (void)cg;
 126
 127         if (sdi->status != SR_ST_ACTIVE)
 128                 return SR_ERR_DEV_CLOSED;
 129
 130         switch (key) {
 131         case SR_CONF_VOLTAGE:
 132                 dblval = g_variant_get_double(data);
 133                 if ((dblval < 0.0) || (dblval > 35.0)) {
 134                         sr_err("Voltage out of range (0 - 35.0)!");
 135                         return SR_ERR_ARG;
 136                 }
 137                 ret = send_msg1(sdi, 'V', (int) (dblval * 10 + 0.5));
 138                 break;
 139         case SR_CONF_CURRENT:
 140                 dblval = g_variant_get_double(data);
 141                 if ((dblval < 0.01) || (dblval > 2.55)) {
 142                         sr_err("Current out of range (0 - 2.55)!");
 143                         return SR_ERR_ARG;
 144                 }
 145                 ret = send_msg1(sdi, 'C', (int) (dblval * 100 + 0.5));
 146                 break;
 147         case SR_CONF_OVER_CURRENT_PROTECTION_ENABLED:
 148                 if (g_variant_get_boolean(data))
 149                         ret = send_msg1(sdi, 'V', 900);
 150                 else /* Constant current mode */
 151                         ret = send_msg1(sdi, 'V', 901);
 152                 break;
 153         default:
 154                 ret = SR_ERR_NA;
 155         }
 156
 157         return ret;
 158 }
 159
 160 static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
 161                 const struct sr_channel_group *cg)
 162 {
 163         int ret;
 164
 165         (void)sdi;
 166         (void)cg;
 167
 168         ret = SR_OK;
 169         switch (key) {
 170         case SR_CONF_SCAN_OPTIONS:
 171                 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 172                                 scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
 173                 break;
 174         case SR_CONF_DEVICE_OPTIONS:
 175                 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 176                                 devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
 177                 break;
 178         default:
 179                 return SR_ERR_NA;
 180         }
 181
 182         return ret;
 183 }
 184
 185 static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data)
 186 {
 187         (void)cb_data;
 188
 189         if (sdi->status != SR_ST_ACTIVE)
 190                 return SR_ERR_DEV_CLOSED;
 191
 192         return SR_OK;
 193 }
 194
 195 static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
 196 {
 197         (void)cb_data;
 198
 199         if (sdi->status != SR_ST_ACTIVE)
 200                 return SR_ERR_DEV_CLOSED;
 201
 202         return SR_OK;
 203 }
 204
 205 SR_PRIV struct sr_dev_driver conrad_digi_35_cpu_driver_info = {
 206         .name = "conrad-digi-35-cpu",
 207         .longname = "Conrad DIGI 35 CPU",
 208         .api_version = 1,
 209         .init = init,
 210         .cleanup = cleanup,
 211         .scan = scan,
 212         .dev_list = dev_list,
 213         .dev_clear = NULL,
 214         .config_get = NULL,
 215         .config_set = config_set,
 216         .config_list = config_list,
 217         .dev_open = std_serial_dev_open,
 218         .dev_close = std_serial_dev_close,
 219         .dev_acquisition_start = dev_acquisition_start,
 220         .dev_acquisition_stop = dev_acquisition_stop,
 221         .context = NULL,
 222 };