libsigrok/hardware/cem-dt-885x/api.c

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/*
* This file is part of the libsigrok project.
*
* Copyright (C) 2013 Bert Vermeulen <bert@biot.com>
*
* 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>
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#include "protocol.h"
#define SERIALCOMM "9600/8n1"
/* 23ms is the longest interval between tokens. */
#define MAX_SCAN_TIME 25 * 1000
static const int32_t hwopts[] = {
SR_CONF_CONN,
};
static const int32_t hwcaps[] = {
SR_CONF_SOUNDLEVELMETER,
SR_CONF_LIMIT_SAMPLES,
SR_CONF_CONTINUOUS,
SR_CONF_SPL_WEIGHT_FREQ,
SR_CONF_SPL_WEIGHT_TIME,
SR_CONF_SPL_MEASUREMENT_RANGE,
SR_CONF_DATALOG,
SR_CONF_HOLD_MAX,
SR_CONF_HOLD_MIN,
SR_CONF_POWER_OFF,
SR_CONF_DATA_SOURCE,
};
static const char *weight_freq[] = {
"A",
"C",
};
static const char *weight_time[] = {
"F",
"S",
};
static const uint64_t meas_ranges[][2] = {
{ 30, 130 },
{ 30, 80 },
{ 50, 100 },
{ 80, 130 },
};
static const char *data_sources[] = {
"Live",
"Memory",
};
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SR_PRIV struct sr_dev_driver cem_dt_885x_driver_info;
static struct sr_dev_driver *di = &cem_dt_885x_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_config *src;
struct sr_serial_dev_inst *serial;
struct sr_dev_inst *sdi;
struct sr_probe *probe;
GSList *l, *devices;
gint64 start;
const char *conn;
unsigned char c;
conn = NULL;
for (l = options; l; l = l->next) {
src = l->data;
if (src->key == SR_CONF_CONN)
conn = g_variant_get_string(src->data, NULL);
}
if (!conn)
return NULL;
if (!(serial = sr_serial_dev_inst_new(conn, SERIALCOMM)))
return NULL;
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if (serial_open(serial, SERIAL_RDONLY | SERIAL_NONBLOCK) != SR_OK)
return NULL;
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devices = NULL;
drvc = di->priv;
start = g_get_monotonic_time();
while (g_get_monotonic_time() - start < MAX_SCAN_TIME) {
if (serial_read(serial, &c, 1) == 1 && c == 0xa5) {
/* Found one. */
if (!(sdi = sr_dev_inst_new(0, SR_ST_INACTIVE, "CEM",
"DT-885x", NULL)))
return NULL;
if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) {
sr_dbg("Device context malloc failed.");
return NULL;
}
devc->cur_mqflags = 0;
devc->recording = -1;
devc->cur_meas_range = 0;
devc->cur_data_source = DATA_SOURCE_LIVE;
devc->enable_data_source_memory = FALSE;
if (!(sdi->conn = sr_serial_dev_inst_new(conn, SERIALCOMM)))
return NULL;
sdi->inst_type = SR_INST_SERIAL;
sdi->priv = devc;
sdi->driver = di;
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if (!(probe = sr_probe_new(0, SR_PROBE_ANALOG, TRUE, "SPL")))
return NULL;
sdi->probes = g_slist_append(sdi->probes, probe);
drvc->instances = g_slist_append(drvc->instances, sdi);
devices = g_slist_append(devices, sdi);
break;
}
/* It takes about 1ms for a byte to come in. */
g_usleep(1000);
}
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serial_close(serial);
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return devices;
}
static GSList *dev_list(void)
{
return ((struct drv_context *)(di->priv))->instances;
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}
static int dev_clear(void)
{
return std_dev_clear(di, NULL);
}
static int dev_open(struct sr_dev_inst *sdi)
{
struct sr_serial_dev_inst *serial;
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serial = sdi->conn;
if (serial_open(serial, SERIAL_RDWR) != SR_OK)
return SR_ERR;
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sdi->status = SR_ST_ACTIVE;
return SR_OK;
}
static int cleanup(void)
{
return dev_clear();
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}
static int config_get(int key, GVariant **data, const struct sr_dev_inst *sdi,
const struct sr_probe_group *probe_group)
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{
struct dev_context *devc;
GVariant *range[2];
uint64_t low, high;
int tmp, ret;
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(void)probe_group;
if (!sdi)
return SR_ERR_ARG;
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devc = sdi->priv;
ret = SR_OK;
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switch (key) {
case SR_CONF_LIMIT_SAMPLES:
*data = g_variant_new_uint64(devc->limit_samples);
break;
case SR_CONF_DATALOG:
if ((ret = cem_dt_885x_recording_get(sdi, &tmp)) == SR_OK)
*data = g_variant_new_boolean(tmp);
break;
case SR_CONF_SPL_WEIGHT_FREQ:
tmp = cem_dt_885x_weight_freq_get(sdi);
if (tmp == SR_MQFLAG_SPL_FREQ_WEIGHT_A)
*data = g_variant_new_string("A");
else if (tmp == SR_MQFLAG_SPL_FREQ_WEIGHT_C)
*data = g_variant_new_string("C");
else
return SR_ERR;
break;
case SR_CONF_SPL_WEIGHT_TIME:
tmp = cem_dt_885x_weight_time_get(sdi);
if (tmp == SR_MQFLAG_SPL_TIME_WEIGHT_F)
*data = g_variant_new_string("F");
else if (tmp == SR_MQFLAG_SPL_TIME_WEIGHT_S)
*data = g_variant_new_string("S");
else
return SR_ERR;
break;
case SR_CONF_HOLD_MAX:
if ((ret = cem_dt_885x_holdmode_get(sdi, &tmp)) == SR_OK)
*data = g_variant_new_boolean(tmp == SR_MQFLAG_MAX);
break;
case SR_CONF_HOLD_MIN:
if ((ret = cem_dt_885x_holdmode_get(sdi, &tmp)) == SR_OK)
*data = g_variant_new_boolean(tmp == SR_MQFLAG_MIN);
break;
case SR_CONF_SPL_MEASUREMENT_RANGE:
if ((ret = cem_dt_885x_meas_range_get(sdi, &low, &high)) == SR_OK) {
range[0] = g_variant_new_uint64(low);
range[1] = g_variant_new_uint64(high);
*data = g_variant_new_tuple(range, 2);
}
break;
case SR_CONF_POWER_OFF:
*data = g_variant_new_boolean(FALSE);
break;
case SR_CONF_DATA_SOURCE:
if (devc->cur_data_source == DATA_SOURCE_LIVE)
*data = g_variant_new_string("Live");
else
*data = g_variant_new_string("Memory");
break;
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default:
return SR_ERR_NA;
}
return ret;
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}
static int config_set(int key, GVariant *data, const struct sr_dev_inst *sdi,
const struct sr_probe_group *probe_group)
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{
struct dev_context *devc;
uint64_t tmp_u64, low, high;
unsigned int i;
int tmp, ret;
const char *tmp_str;
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(void)probe_group;
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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;
}
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ret = SR_OK;
switch (key) {
case SR_CONF_LIMIT_SAMPLES:
tmp_u64 = g_variant_get_uint64(data);
devc->limit_samples = tmp_u64;
ret = SR_OK;
break;
case SR_CONF_DATALOG:
ret = cem_dt_885x_recording_set(sdi, g_variant_get_boolean(data));
break;
case SR_CONF_SPL_WEIGHT_FREQ:
tmp_str = g_variant_get_string(data, NULL);
if (!strcmp(tmp_str, "A"))
ret = cem_dt_885x_weight_freq_set(sdi,
SR_MQFLAG_SPL_FREQ_WEIGHT_A);
else if (!strcmp(tmp_str, "C"))
ret = cem_dt_885x_weight_freq_set(sdi,
SR_MQFLAG_SPL_FREQ_WEIGHT_C);
else
return SR_ERR_ARG;
break;
case SR_CONF_SPL_WEIGHT_TIME:
tmp_str = g_variant_get_string(data, NULL);
if (!strcmp(tmp_str, "F"))
ret = cem_dt_885x_weight_time_set(sdi,
SR_MQFLAG_SPL_TIME_WEIGHT_F);
else if (!strcmp(tmp_str, "S"))
ret = cem_dt_885x_weight_time_set(sdi,
SR_MQFLAG_SPL_TIME_WEIGHT_S);
else
return SR_ERR_ARG;
break;
case SR_CONF_HOLD_MAX:
tmp = g_variant_get_boolean(data) ? SR_MQFLAG_MAX : 0;
ret = cem_dt_885x_holdmode_set(sdi, tmp);
break;
case SR_CONF_HOLD_MIN:
tmp = g_variant_get_boolean(data) ? SR_MQFLAG_MIN : 0;
ret = cem_dt_885x_holdmode_set(sdi, tmp);
break;
case SR_CONF_SPL_MEASUREMENT_RANGE:
g_variant_get(data, "(tt)", &low, &high);
ret = SR_ERR_ARG;
for (i = 0; i < ARRAY_SIZE(meas_ranges); i++) {
if (meas_ranges[i][0] == low && meas_ranges[i][1] == high) {
ret = cem_dt_885x_meas_range_set(sdi, low, high);
break;
}
}
break;
case SR_CONF_POWER_OFF:
if (g_variant_get_boolean(data))
ret = cem_dt_885x_power_off(sdi);
break;
case SR_CONF_DATA_SOURCE:
tmp_str = g_variant_get_string(data, NULL);
if (!strcmp(tmp_str, "Live"))
devc->cur_data_source = DATA_SOURCE_LIVE;
else if (!strcmp(tmp_str, "Memory"))
devc->cur_data_source = DATA_SOURCE_MEMORY;
else
return SR_ERR;
devc->enable_data_source_memory = devc->cur_data_source == DATA_SOURCE_MEMORY;
break;
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default:
ret = SR_ERR_NA;
}
return ret;
}
static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi,
const struct sr_probe_group *probe_group)
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{
GVariant *tuple, *range[2];
GVariantBuilder gvb;
unsigned int i;
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int ret;
(void)sdi;
(void)probe_group;
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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;
case SR_CONF_SPL_WEIGHT_FREQ:
*data = g_variant_new_strv(weight_freq, ARRAY_SIZE(weight_freq));
break;
case SR_CONF_SPL_WEIGHT_TIME:
*data = g_variant_new_strv(weight_time, ARRAY_SIZE(weight_time));
break;
case SR_CONF_SPL_MEASUREMENT_RANGE:
g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
for (i = 0; i < ARRAY_SIZE(meas_ranges); i++) {
range[0] = g_variant_new_uint64(meas_ranges[i][0]);
range[1] = g_variant_new_uint64(meas_ranges[i][1]);
tuple = g_variant_new_tuple(range, 2);
g_variant_builder_add_value(&gvb, tuple);
}
*data = g_variant_builder_end(&gvb);
break;
case SR_CONF_DATA_SOURCE:
*data = g_variant_new_strv(data_sources, ARRAY_SIZE(data_sources));
break;
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default:
return SR_ERR_NA;
}
return ret;
}
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static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data)
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{
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struct dev_context *devc;
struct sr_serial_dev_inst *serial;
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if (sdi->status != SR_ST_ACTIVE)
return SR_ERR_DEV_CLOSED;
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if (!(devc = sdi->priv)) {
sr_err("sdi->priv was NULL.");
return SR_ERR_BUG;
}
devc->cb_data = cb_data;
devc->state = ST_INIT;
devc->num_samples = 0;
devc->buf_len = 0;
/* Send header packet to the session bus. */
std_session_send_df_header(cb_data, LOG_PREFIX);
/* Poll every 100ms, or whenever some data comes in. */
serial = sdi->conn;
serial_source_add(serial, G_IO_IN, 150, cem_dt_885x_receive_data,
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(void *)sdi);
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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 std_serial_dev_acquisition_stop(sdi, cb_data, std_serial_dev_close,
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sdi->conn, LOG_PREFIX);
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}
SR_PRIV struct sr_dev_driver cem_dt_885x_driver_info = {
.name = "cem-dt-885x",
.longname = "CEM DT-885x",
.api_version = 1,
.init = init,
.cleanup = cleanup,
.scan = scan,
.dev_list = dev_list,
.dev_clear = dev_clear,
.config_get = config_get,
.config_set = config_set,
.config_list = config_list,
.dev_open = dev_open,
.dev_close = std_serial_dev_close,
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.dev_acquisition_start = dev_acquisition_start,
.dev_acquisition_stop = dev_acquisition_stop,
.priv = NULL,
};