libsigrok/hardware/appa-55ii/api.c

291 lines
6.9 KiB
C

/*
* This file is part of the libsigrok project.
*
* Copyright (C) 2013 Aurelien Jacobs <aurel@gnuage.org>
*
* 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/>.
*/
#include <string.h>
#include "protocol.h"
static const int32_t hwopts[] = {
SR_CONF_CONN,
SR_CONF_SERIALCOMM,
};
static const int32_t hwcaps[] = {
SR_CONF_THERMOMETER,
SR_CONF_LIMIT_SAMPLES,
SR_CONF_LIMIT_MSEC,
SR_CONF_CONTINUOUS,
SR_CONF_DATA_SOURCE,
};
static const char *data_sources[] = {
"Live",
"Memory",
};
SR_PRIV struct sr_dev_driver appa_55ii_driver_info;
static struct sr_dev_driver *di = &appa_55ii_driver_info;
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_serial_dev_inst *serial;
struct sr_dev_inst *sdi;
struct sr_channel *ch;
struct sr_config *src;
GSList *devices, *l;
const char *conn, *serialcomm;
uint8_t buf[50];
size_t len;
len = sizeof(buf);
devices = 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 = "9600/8n1";
if (!(serial = sr_serial_dev_inst_new(conn, serialcomm)))
return NULL;
if (serial_open(serial, SERIAL_RDONLY | SERIAL_NONBLOCK) != SR_OK)
return NULL;
sr_info("Probing serial port %s.", conn);
drvc = di->priv;
drvc->instances = NULL;
serial_flush(serial);
/* Let's get a bit of data and see if we can find a packet. */
if (serial_stream_detect(serial, buf, &len, 25,
appa_55ii_packet_valid, 500, 9600) != SR_OK)
goto scan_cleanup;
sr_info("Found device on port %s.", conn);
if (!(sdi = sr_dev_inst_new(0, SR_ST_INACTIVE, "APPA", "55II", NULL)))
goto scan_cleanup;
if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) {
sr_err("Device context malloc failed.");
goto scan_cleanup;
}
devc->data_source = DEFAULT_DATA_SOURCE;
sdi->inst_type = SR_INST_SERIAL;
sdi->conn = serial;
sdi->priv = devc;
sdi->driver = di;
if (!(ch = sr_channel_new(0, SR_CHANNEL_ANALOG, TRUE, "T1")))
goto scan_cleanup;
sdi->channels = g_slist_append(sdi->channels, ch);
if (!(ch = sr_channel_new(0, SR_CHANNEL_ANALOG, TRUE, "T2")))
goto scan_cleanup;
sdi->channels = g_slist_append(sdi->channels, ch);
drvc->instances = g_slist_append(drvc->instances, sdi);
devices = g_slist_append(devices, sdi);
scan_cleanup:
serial_close(serial);
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_get(int key, GVariant **data, const struct sr_dev_inst *sdi,
const struct sr_channel_group *cg)
{
struct dev_context *devc = sdi->priv;
(void)cg;
switch (key) {
case SR_CONF_LIMIT_SAMPLES:
*data = g_variant_new_uint64(devc->limit_samples);
break;
case SR_CONF_LIMIT_MSEC:
*data = g_variant_new_uint64(devc->limit_msec);
break;
case SR_CONF_DATA_SOURCE:
*data = g_variant_new_string(data_sources[devc->data_source]);
break;
default:
return SR_ERR_NA;
}
return SR_OK;
}
static int config_set(int key, GVariant *data, const struct sr_dev_inst *sdi,
const struct sr_channel_group *cg)
{
struct dev_context *devc;
const char *tmp_str;
unsigned int i;
(void)cg;
if (sdi->status != SR_ST_ACTIVE)
return SR_ERR_DEV_CLOSED;
if (!(devc = sdi->priv)) {
sr_err("sdi->priv was NULL.");
return SR_ERR_BUG;
}
switch (key) {
case SR_CONF_LIMIT_SAMPLES:
devc->limit_samples = g_variant_get_uint64(data);
sr_dbg("Setting sample limit to %" PRIu64 ".", devc->limit_samples);
break;
case SR_CONF_LIMIT_MSEC:
devc->limit_msec = g_variant_get_uint64(data);
sr_dbg("Setting time limit to %" PRIu64 "ms.", devc->limit_msec);
break;
case SR_CONF_DATA_SOURCE: {
tmp_str = g_variant_get_string(data, NULL);
for (i = 0; i < ARRAY_SIZE(data_sources); i++)
if (!strcmp(tmp_str, data_sources[i])) {
devc->data_source = i;
break;
}
if (i == ARRAY_SIZE(data_sources))
return SR_ERR;
break;
}
default:
return SR_ERR_NA;
}
return SR_OK;
}
static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi,
const struct sr_channel_group *cg)
{
(void)sdi;
(void)cg;
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;
case SR_CONF_DATA_SOURCE:
*data = g_variant_new_strv(data_sources, ARRAY_SIZE(data_sources));
break;
default:
return SR_ERR_NA;
}
return SR_OK;
}
static int dev_acquisition_start(const struct sr_dev_inst *sdi,
void *cb_data)
{
struct sr_serial_dev_inst *serial;
struct dev_context *devc;
serial = sdi->conn;
if (sdi->status != SR_ST_ACTIVE)
return SR_ERR_DEV_CLOSED;
if (!(devc = sdi->priv)) {
sr_err("sdi->priv was NULL.");
return SR_ERR_BUG;
}
devc->session_cb_data = cb_data;
/*
* Reset the number of samples to take. If we've already collected our
* quota, but we start a new session, and don't reset this, we'll just
* quit without acquiring any new samples.
*/
devc->num_samples = 0;
devc->start_time = g_get_monotonic_time();
/* Send header packet to the session bus. */
std_session_send_df_header(cb_data, LOG_PREFIX);
/* Poll every 50ms, or whenever some data comes in. */
serial_source_add(serial, G_IO_IN, 50, appa_55ii_receive_data, (void *)sdi);
return SR_OK;
}
static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
{
return std_serial_dev_acquisition_stop(sdi, cb_data,
std_serial_dev_close, sdi->conn, LOG_PREFIX);
}
SR_PRIV struct sr_dev_driver appa_55ii_driver_info = {
.name = "appa-55ii",
.longname = "APPA 55II",
.api_version = 1,
.init = init,
.cleanup = cleanup,
.scan = scan,
.dev_list = dev_list,
.dev_clear = NULL,
.config_get = config_get,
.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,
};