libsigrok/hardware/tondaj-sl-814/api.c

252 lines
5.6 KiB
C

/*
* This file is part of the libsigrok project.
*
* Copyright (C) 2012 Uwe Hermann <uwe@hermann-uwe.de>
*
* 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 2 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, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <fcntl.h>
#include <glib.h>
#include "libsigrok.h"
#include "libsigrok-internal.h"
#include "protocol.h"
#define SERIALCOMM "9600/8e1"
static const int32_t hwopts[] = {
SR_CONF_CONN,
SR_CONF_SERIALCOMM,
};
static const int32_t hwcaps[] = {
SR_CONF_SOUNDLEVELMETER,
SR_CONF_LIMIT_SAMPLES,
SR_CONF_CONTINUOUS,
};
SR_PRIV struct sr_dev_driver tondaj_sl_814_driver_info;
static struct sr_dev_driver *di = &tondaj_sl_814_driver_info;
static int dev_clear(void)
{
return std_dev_clear(di, NULL);
}
static int init(struct sr_context *sr_ctx)
{
return std_init(sr_ctx, di, LOG_PREFIX);
}
static GSList *scan(GSList *options)
{
struct drv_context *drvc;
struct dev_context *devc;
struct sr_dev_inst *sdi;
struct sr_config *src;
struct sr_probe *probe;
GSList *devices, *l;
const char *conn, *serialcomm;
struct sr_serial_dev_inst *serial;
drvc = di->priv;
drvc->instances = NULL;
devices = NULL;
conn = serialcomm = NULL;
for (l = options; l; l = l->next) {
if (!(src = l->data)) {
sr_err("Invalid option data, skipping.");
continue;
}
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;
default:
sr_err("Unknown option %d, skipping.", src->key);
break;
}
}
if (!conn)
return NULL;
if (!serialcomm)
serialcomm = SERIALCOMM;
if (!(sdi = sr_dev_inst_new(0, SR_ST_INACTIVE, "Tondaj",
"SL-814", NULL))) {
sr_err("Failed to create device instance.");
return NULL;
}
if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) {
sr_err("Device context malloc failed.");
return NULL;
}
if (!(serial = sr_serial_dev_inst_new(conn, serialcomm)))
return NULL;
if (serial_open(serial, SERIAL_RDWR | SERIAL_NONBLOCK) != SR_OK)
return NULL;
sdi->inst_type = SR_INST_SERIAL;
sdi->conn = serial;
sdi->priv = devc;
sdi->driver = di;
probe = sr_probe_new(0, SR_PROBE_ANALOG, TRUE, "P1");
if (!probe) {
sr_err("Failed to create probe.");
return NULL;
}
sdi->probes = g_slist_append(sdi->probes, probe);
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 dev_open(struct sr_dev_inst *sdi)
{
struct sr_serial_dev_inst *serial;
serial = sdi->conn;
if (serial_open(serial, SERIAL_RDWR | SERIAL_NONBLOCK) != SR_OK)
return SR_ERR;
sdi->status = SR_ST_ACTIVE;
return SR_OK;
}
static int dev_close(struct sr_dev_inst *sdi)
{
struct sr_serial_dev_inst *serial;
serial = sdi->conn;
if (serial && serial->fd != -1) {
serial_close(serial);
sdi->status = SR_ST_INACTIVE;
}
return SR_OK;
}
static int cleanup(void)
{
return dev_clear();
}
static int config_set(int id, GVariant *data, const struct sr_dev_inst *sdi)
{
struct dev_context *devc;
if (sdi->status != SR_ST_ACTIVE)
return SR_ERR_DEV_CLOSED;
devc = sdi->priv;
switch (id) {
case SR_CONF_LIMIT_SAMPLES:
devc->limit_samples = g_variant_get_uint64(data);
sr_dbg("Setting sample limit to %" PRIu64 ".",
devc->limit_samples);
break;
default:
return SR_ERR_NA;
}
return SR_OK;
}
static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi)
{
(void)sdi;
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 SR_OK;
}
static int dev_acquisition_start(const struct sr_dev_inst *sdi,
void *cb_data)
{
struct dev_context *devc;
struct sr_serial_dev_inst *serial;
if (sdi->status != SR_ST_ACTIVE)
return SR_ERR_DEV_CLOSED;
devc = sdi->priv;
devc->cb_data = cb_data;
/* Send header packet to the session bus. */
std_session_send_df_header(cb_data, LOG_PREFIX);
/* Poll every 500ms, or whenever some data comes in. */
serial = sdi->conn;
sr_source_add(serial->fd, G_IO_IN, 500,
tondaj_sl_814_receive_data, (void *)sdi);
return SR_OK;
}
static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
{
return std_dev_acquisition_stop_serial(sdi, cb_data, dev_close,
sdi->conn, LOG_PREFIX);
}
SR_PRIV struct sr_dev_driver tondaj_sl_814_driver_info = {
.name = "tondaj-sl-814",
.longname = "Tondaj SL-814",
.api_version = 1,
.init = init,
.cleanup = cleanup,
.scan = scan,
.dev_list = dev_list,
.dev_clear = dev_clear,
.config_get = NULL,
.config_set = config_set,
.config_list = config_list,
.dev_open = dev_open,
.dev_close = dev_close,
.dev_acquisition_start = dev_acquisition_start,
.dev_acquisition_stop = dev_acquisition_stop,
.priv = NULL,
};