src/hardware/rdtech-tc/api.c

   1 /*
   2  * This file is part of the libsigrok project.
   3  *
   4  * Copyright (C) 2020 Andreas Sandberg <andreas@sandberg.pp.se>
   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
  22 #include <fcntl.h>
  23 #include <glib.h>
  24 #include <libsigrok/libsigrok.h>
  25 #include <string.h>
  26 #include <sys/types.h>
  27 #include <sys/stat.h>
  28
  29 #include "libsigrok-internal.h"
  30 #include "protocol.h"
  31
  32 #define RDTECH_TC_SERIALCOMM "115200/8n1"
  33
  34 static const uint32_t scanopts[] = {
  35         SR_CONF_CONN,
  36         SR_CONF_SERIALCOMM,
  37 };
  38
  39 static const uint32_t drvopts[] = {
  40         SR_CONF_ENERGYMETER,
  41 };
  42
  43 static const uint32_t devopts[] = {
  44         SR_CONF_CONTINUOUS,
  45         SR_CONF_LIMIT_SAMPLES | SR_CONF_SET,
  46         SR_CONF_LIMIT_MSEC | SR_CONF_SET,
  47 };
  48
  49 static GSList *rdtech_tc_scan(struct sr_dev_driver *di,
  50         const char *conn, const char *serialcomm)
  51 {
  52         struct sr_serial_dev_inst *serial;
  53         GSList *devices;
  54         struct dev_context *devc;
  55         struct sr_dev_inst *sdi;
  56         size_t i;
  57
  58         serial = sr_serial_dev_inst_new(conn, serialcomm);
  59         if (serial_open(serial, SERIAL_RDWR) != SR_OK)
  60                 goto err_out;
  61
  62         devc = g_malloc0(sizeof(*devc));
  63         sr_sw_limits_init(&devc->limits);
  64
  65         if (rdtech_tc_probe(serial, devc) != SR_OK) {
  66                 sr_err("Failed to find a supported RDTech TC device.");
  67                 goto err_out_serial;
  68         }
  69
  70         sdi = g_malloc0(sizeof(*sdi));
  71         sdi->priv = devc;
  72         sdi->status = SR_ST_INACTIVE;
  73         sdi->vendor = g_strdup("RDTech");
  74         sdi->model = g_strdup(devc->dev_info.model_name);
  75         sdi->version = g_strdup(devc->dev_info.fw_ver);
  76         sdi->serial_num = g_strdup_printf("%08" PRIu32, devc->dev_info.serial_num);
  77         sdi->inst_type = SR_INST_SERIAL;
  78         sdi->conn = serial;
  79
  80         for (i = 0; devc->channels[i].name; i++) {
  81                 sr_channel_new(sdi, i, SR_CHANNEL_ANALOG, TRUE,
  82                         devc->channels[i].name);
  83         }
  84
  85         devices = g_slist_append(NULL, sdi);
  86         serial_close(serial);
  87         if (!devices)
  88                 sr_serial_dev_inst_free(serial);
  89
  90         return std_scan_complete(di, devices);
  91
  92 err_out_serial:
  93         g_free(devc);
  94         serial_close(serial);
  95 err_out:
  96         sr_serial_dev_inst_free(serial);
  97
  98         return NULL;
  99 }
 100
 101 static GSList *scan(struct sr_dev_driver *di, GSList *options)
 102 {
 103         struct sr_config *src;
 104         const char *conn;
 105         const char *serialcomm;
 106
 107         conn = NULL;
 108         serialcomm = RDTECH_TC_SERIALCOMM;
 109         for (GSList *l = options; l; l = l->next) {
 110                 src = l->data;
 111                 switch (src->key) {
 112                 case SR_CONF_CONN:
 113                         conn = g_variant_get_string(src->data, NULL);
 114                         break;
 115                 case SR_CONF_SERIALCOMM:
 116                         serialcomm = g_variant_get_string(src->data, NULL);
 117                         break;
 118                 }
 119         }
 120         if (!conn)
 121                 return NULL;
 122
 123         return rdtech_tc_scan(di, conn, serialcomm);
 124 }
 125
 126 static int config_set(uint32_t key, GVariant *data,
 127         const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 128 {
 129         struct dev_context *devc;
 130
 131         (void)cg;
 132
 133         devc = sdi->priv;
 134
 135         return sr_sw_limits_config_set(&devc->limits, key, data);
 136 }
 137
 138 static int config_list(uint32_t key, GVariant **data,
 139         const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 140 {
 141         return STD_CONFIG_LIST(key, data, sdi, cg, scanopts, drvopts, devopts);
 142 }
 143
 144 static int dev_acquisition_start(const struct sr_dev_inst *sdi)
 145 {
 146         struct dev_context *devc;
 147         struct sr_serial_dev_inst *serial;
 148
 149         devc = sdi->priv;
 150         sr_sw_limits_acquisition_start(&devc->limits);
 151         std_session_send_df_header(sdi);
 152
 153         serial = sdi->conn;
 154         serial_source_add(sdi->session, serial, G_IO_IN, 50,
 155                 rdtech_tc_receive_data, (void *)sdi);
 156
 157         return rdtech_tc_poll(sdi);
 158 }
 159
 160 static struct sr_dev_driver rdtech_tc_driver_info = {
 161         .name = "rdtech-tc",
 162         .longname = "RDTech TC66C USB power meter",
 163         .api_version = 1,
 164         .init = std_init,
 165         .cleanup = std_cleanup,
 166         .scan = scan,
 167         .dev_list = std_dev_list,
 168         .dev_clear = std_dev_clear,
 169         .config_get = NULL,
 170         .config_set = config_set,
 171         .config_list = config_list,
 172         .dev_open = std_serial_dev_open,
 173         .dev_close = std_serial_dev_close,
 174         .dev_acquisition_start = dev_acquisition_start,
 175         .dev_acquisition_stop = std_serial_dev_acquisition_stop,
 176         .context = NULL,
 177 };
 178 SR_REGISTER_DEV_DRIVER(rdtech_tc_driver_info);