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

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/*
* This file is part of the libsigrok project.
*
* Copyright (C) 2014 Matthias Heidbrink <m-sigrok@heidbrink.biz>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/** @file
* <em>Conrad DIGI 35 CPU</em> power supply driver
* @internal
*/
#include "protocol.h"
#define SERIALCOMM "9600/8n1"
static const int32_t hwopts[] = {
SR_CONF_CONN,
SR_CONF_SERIALCOMM,
};
static const int32_t hwcaps[] = {
SR_CONF_POWER_SUPPLY,
SR_CONF_OUTPUT_VOLTAGE,
SR_CONF_OUTPUT_CURRENT,
/* There's no SR_CONF_OUTPUT_ENABLED; can't know/set status remotely. */
SR_CONF_OVER_CURRENT_PROTECTION,
};
SR_PRIV struct sr_dev_driver conrad_digi_35_cpu_driver_info;
static struct sr_dev_driver *di = &conrad_digi_35_cpu_driver_info;
static int init(struct sr_context *sr_ctx)
{
return std_init(sr_ctx, di, LOG_PREFIX);
}
static GSList *scan(GSList *options)
{
struct sr_dev_inst *sdi;
struct drv_context *drvc;
struct sr_config *src;
struct sr_channel *ch;
struct sr_serial_dev_inst *serial;
GSList *l, *devices;
const char *conn, *serialcomm;
devices = NULL;
drvc = di->priv;
drvc->instances = NULL;
conn = serialcomm = NULL;
for (l = options; l; l = l->next) {
src = l->data;
switch (src->key) {
case SR_CONF_CONN:
conn = g_variant_get_string(src->data, NULL);
break;
case SR_CONF_SERIALCOMM:
serialcomm = g_variant_get_string(src->data, NULL);
break;
}
}
if (!conn)
return NULL;
if (!serialcomm)
serialcomm = SERIALCOMM;
/*
* We cannot scan for this device because it is write-only.
* So just check that the port parameters are valid and assume that
* the device is there.
*/
if (!(serial = sr_serial_dev_inst_new(conn, serialcomm)))
return NULL;
if (serial_open(serial, SERIAL_RDWR | SERIAL_NONBLOCK) != SR_OK)
return NULL;
serial_flush(serial);
serial_close(serial);
sr_spew("Conrad DIGI 35 CPU assumed at %s.", conn);
if (!(sdi = sr_dev_inst_new(0, SR_ST_ACTIVE, "Conrad", "DIGI 35 CPU", "")))
return NULL;
sdi->conn = serial;
sdi->priv = NULL;
sdi->driver = di;
if (!(ch = sr_channel_new(0, SR_CHANNEL_ANALOG, TRUE, "CH1")))
return NULL;
sdi->channels = g_slist_append(sdi->channels, ch);
drvc->instances = g_slist_append(drvc->instances, sdi);
devices = g_slist_append(devices, sdi);
return devices;
}
static GSList *dev_list(void)
{
return ((struct drv_context *)(di->priv))->instances;
}
static int cleanup(void)
{
return std_dev_clear(di, NULL);
}
static int config_set(int key, GVariant *data, const struct sr_dev_inst *sdi,
const struct sr_channel_group *cg)
{
int ret;
double dblval;
(void)cg;
if (sdi->status != SR_ST_ACTIVE)
return SR_ERR_DEV_CLOSED;
ret = SR_OK;
switch (key) {
case SR_CONF_OUTPUT_VOLTAGE:
dblval = g_variant_get_double(data);
if ((dblval < 0.0) || (dblval > 35.0)) {
sr_err("Voltage out of range (0 - 35.0)!");
return SR_ERR_ARG;
}
ret = send_msg1(sdi, 'V', (int) (dblval * 10 + 0.5));
break;
case SR_CONF_OUTPUT_CURRENT:
dblval = g_variant_get_double(data);
if ((dblval < 0.01) || (dblval > 2.55)) {
sr_err("Current out of range (0 - 2.55)!");
return SR_ERR_ARG;
}
ret = send_msg1(sdi, 'C', (int) (dblval * 100 + 0.5));
break;
/* No SR_CONF_OUTPUT_ENABLED :-( . */
case SR_CONF_OVER_CURRENT_PROTECTION:
if (g_variant_get_boolean(data))
ret = send_msg1(sdi, 'V', 900);
else /* Constant current mode */
ret = send_msg1(sdi, 'V', 901);
break;
default:
ret = SR_ERR_NA;
}
return ret;
}
static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi,
const struct sr_channel_group *cg)
{
int ret;
(void)sdi;
(void)cg;
ret = SR_OK;
switch (key) {
case SR_CONF_SCAN_OPTIONS:
*data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
hwopts, ARRAY_SIZE(hwopts), sizeof(int32_t));
break;
case SR_CONF_DEVICE_OPTIONS:
*data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
hwcaps, ARRAY_SIZE(hwcaps), sizeof(int32_t));
break;
default:
return SR_ERR_NA;
}
return ret;
}
static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data)
{
(void)cb_data;
if (sdi->status != SR_ST_ACTIVE)
return SR_ERR_DEV_CLOSED;
return SR_OK;
}
static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
{
(void)cb_data;
if (sdi->status != SR_ST_ACTIVE)
return SR_ERR_DEV_CLOSED;
return SR_OK;
}
SR_PRIV struct sr_dev_driver conrad_digi_35_cpu_driver_info = {
.name = "conrad-digi-35-cpu",
.longname = "Conrad DIGI 35 CPU",
.api_version = 1,
.init = init,
.cleanup = cleanup,
.scan = scan,
.dev_list = dev_list,
.dev_clear = NULL,
.config_get = NULL,
.config_set = config_set,
.config_list = config_list,
.dev_open = std_serial_dev_open,
.dev_close = std_serial_dev_close,
.dev_acquisition_start = dev_acquisition_start,
.dev_acquisition_stop = dev_acquisition_stop,
.priv = NULL,
};