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libsigrok/hardware/rigol-ds1xx2/api.c

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/*
* This file is part of the libsigrok project.
*
* Copyright (C) 2012 Martin Ling <martin-git@earth.li>
* 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 <fcntl.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <glib.h>
#include "libsigrok.h"
#include "libsigrok-internal.h"
#include "protocol.h"
#define NUM_TIMEBASE 12
#define NUM_VDIV 8
static const int32_t hwopts[] = {
SR_CONF_CONN,
};
static const int32_t hwcaps[] = {
SR_CONF_OSCILLOSCOPE,
SR_CONF_TIMEBASE,
SR_CONF_TRIGGER_SOURCE,
SR_CONF_TRIGGER_SLOPE,
SR_CONF_HORIZ_TRIGGERPOS,
SR_CONF_NUM_TIMEBASE,
};
static const int32_t analog_hwcaps[] = {
SR_CONF_NUM_VDIV,
SR_CONF_VDIV,
SR_CONF_COUPLING,
};
static const uint64_t timebases[][2] = {
/* nanoseconds */
{ 2, 1000000000 },
{ 5, 1000000000 },
{ 10, 1000000000 },
{ 20, 1000000000 },
{ 50, 1000000000 },
{ 100, 1000000000 },
{ 500, 1000000000 },
/* microseconds */
{ 1, 1000000 },
{ 2, 1000000 },
{ 5, 1000000 },
{ 10, 1000000 },
{ 20, 1000000 },
{ 50, 1000000 },
{ 100, 1000000 },
{ 200, 1000000 },
{ 500, 1000000 },
/* milliseconds */
{ 1, 1000 },
{ 2, 1000 },
{ 5, 1000 },
{ 10, 1000 },
{ 20, 1000 },
{ 50, 1000 },
{ 100, 1000 },
{ 200, 1000 },
{ 500, 1000 },
/* seconds */
{ 1, 1 },
{ 2, 1 },
{ 5, 1 },
{ 10, 1 },
{ 20, 1 },
{ 50, 1 },
};
static const uint64_t vdivs[][2] = {
/* millivolts */
{ 2, 1000 },
{ 5, 1000 },
{ 10, 1000 },
{ 20, 1000 },
{ 50, 1000 },
{ 100, 1000 },
{ 200, 1000 },
{ 500, 1000 },
/* volts */
{ 1, 1 },
{ 2, 1 },
{ 5, 1 },
{ 10, 1 },
};
static const char *trigger_sources[] = {
"CH1",
"CH2",
"EXT",
"AC Line",
"D0",
"D1",
"D2",
"D3",
"D4",
"D5",
"D6",
"D7",
"D8",
"D9",
"D10",
"D11",
"D12",
"D13",
"D14",
"D15",
};
static const char *coupling[] = {
"AC",
"DC",
"GND",
};
static const char *supported_models[] = {
"DS1052E",
"DS1102E",
"DS1152E",
"DS1052D",
"DS1102D",
"DS1152D",
};
SR_PRIV struct sr_dev_driver rigol_ds1xx2_driver_info;
static struct sr_dev_driver *di = &rigol_ds1xx2_driver_info;
static void clear_helper(void *priv)
{
struct dev_context *devc;
devc = priv;
g_free(devc->coupling[0]);
g_free(devc->coupling[1]);
g_free(devc->trigger_source);
g_free(devc->trigger_slope);
g_slist_free(devc->analog_groups[0].probes);
g_slist_free(devc->analog_groups[1].probes);
g_slist_free(devc->digital_group.probes);
}
static int dev_clear(void)
{
return std_dev_clear(di, clear_helper);
}
static int set_cfg(const struct sr_dev_inst *sdi, const char *format, ...)
{
va_list args;
char buf[256];
va_start(args, format);
vsnprintf(buf, 255, format, args);
va_end(args);
if (rigol_ds1xx2_send(sdi, buf) != SR_OK)
return SR_ERR;
/* When setting a bunch of parameters in a row, the DS1052E scrambles
* some of them unless there is at least 100ms delay in between. */
sr_spew("delay %dms", 100);
g_usleep(100000);
return SR_OK;
}
static int init(struct sr_context *sr_ctx)
{
return std_init(sr_ctx, di, LOG_PREFIX);
}
static int probe_port(const char *port, GSList **devices)
{
struct dev_context *devc;
struct sr_dev_inst *sdi;
struct sr_serial_dev_inst *serial;
struct sr_probe *probe;
unsigned int i;
int len, num_tokens;
gboolean matched, has_digital;
const char *manufacturer, *model, *version;
char buf[256];
gchar **tokens, *channel_name;
*devices = NULL;
if (!(serial = sr_serial_dev_inst_new(port, NULL)))
return SR_ERR_MALLOC;
if (serial_open(serial, SERIAL_RDWR) != SR_OK)
return SR_ERR;
len = serial_write(serial, "*IDN?", 5);
len = serial_read(serial, buf, sizeof(buf));
if (serial_close(serial) != SR_OK)
return SR_ERR;
sr_serial_dev_inst_free(serial);
if (len == 0)
return SR_ERR_NA;
buf[len] = 0;
tokens = g_strsplit(buf, ",", 0);
sr_dbg("response: %s [%s]", port, buf);
for (num_tokens = 0; tokens[num_tokens] != NULL; num_tokens++);
if (num_tokens < 4) {
g_strfreev(tokens);
return SR_ERR_NA;
}
manufacturer = tokens[0];
model = tokens[1];
version = tokens[3];
if (strcmp(manufacturer, "Rigol Technologies")) {
g_strfreev(tokens);
return SR_ERR_NA;
}
matched = has_digital = FALSE;
for (i = 0; i < ARRAY_SIZE(supported_models); i++) {
if (!strcmp(model, supported_models[i])) {
matched = TRUE;
has_digital = g_str_has_suffix(model, "D");
break;
}
}
if (!matched || !(sdi = sr_dev_inst_new(0, SR_ST_ACTIVE,
manufacturer, model, version))) {
g_strfreev(tokens);
return SR_ERR_NA;
}
g_strfreev(tokens);
if (!(sdi->conn = sr_serial_dev_inst_new(port, NULL)))
return SR_ERR_MALLOC;
sdi->driver = di;
sdi->inst_type = SR_INST_SERIAL;
if (!(devc = g_try_malloc0(sizeof(struct dev_context))))
return SR_ERR_MALLOC;
devc->limit_frames = 0;
devc->has_digital = has_digital;
for (i = 0; i < 2; i++) {
channel_name = (i == 0 ? "CH1" : "CH2");
if (!(probe = sr_probe_new(i, SR_PROBE_ANALOG, TRUE, channel_name)))
return SR_ERR_MALLOC;
sdi->probes = g_slist_append(sdi->probes, probe);
devc->analog_groups[i].name = channel_name;
devc->analog_groups[i].probes = g_slist_append(NULL, probe);
sdi->probe_groups = g_slist_append(sdi->probe_groups,
&devc->analog_groups[i]);
}
if (devc->has_digital) {
for (i = 0; i < 16; i++) {
if (!(channel_name = g_strdup_printf("D%d", i)))
return SR_ERR_MALLOC;
probe = sr_probe_new(i, SR_PROBE_LOGIC, TRUE, channel_name);
g_free(channel_name);
if (!probe)
return SR_ERR_MALLOC;
sdi->probes = g_slist_append(sdi->probes, probe);
devc->digital_group.probes = g_slist_append(
devc->digital_group.probes, probe);
devc->digital_group.name = "LA";
sdi->probe_groups = g_slist_append(sdi->probe_groups,
&devc->digital_group);
}
}
sdi->priv = devc;
*devices = g_slist_append(NULL, sdi);
return SR_OK;
}
static GSList *scan(GSList *options)
{
struct drv_context *drvc;
struct sr_config *src;
GSList *l, *devices;
GDir *dir;
int ret;
const gchar *dev_name;
gchar *port = NULL;
drvc = di->priv;
for (l = options; l; l = l->next) {
src = l->data;
if (src->key == SR_CONF_CONN) {
port = (char *)g_variant_get_string(src->data, NULL);
break;
}
}
devices = NULL;
if (port) {
if (probe_port(port, &devices) == SR_ERR_MALLOC)
return NULL;
} else {
if (!(dir = g_dir_open("/sys/class/usbmisc/", 0, NULL)))
if (!(dir = g_dir_open("/sys/class/usb/", 0, NULL)))
return NULL;
while ((dev_name = g_dir_read_name(dir))) {
if (strncmp(dev_name, "usbtmc", 6))
continue;
port = g_strconcat("/dev/", dev_name, NULL);
ret = probe_port(port, &devices);
g_free(port);
if (ret == SR_ERR_MALLOC) {
g_dir_close(dir);
return NULL;
}
}
g_dir_close(dir);
}
/* Tack a copy of the newly found devices onto the driver list. */
l = g_slist_copy(devices);
drvc->instances = g_slist_concat(drvc->instances, l);
return devices;
}
static GSList *dev_list(void)
{
return ((struct drv_context *)(di->priv))->instances;
}
static int dev_open(struct sr_dev_inst *sdi)
{
if (serial_open(sdi->conn, SERIAL_RDWR) != SR_OK)
return SR_ERR;
if (rigol_ds1xx2_get_dev_cfg(sdi) != 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_get(int id, GVariant **data, const struct sr_dev_inst *sdi,
const struct sr_probe_group *probe_group)
{
struct dev_context *devc;
unsigned int i;
if (!sdi || !(devc = sdi->priv))
return SR_ERR_ARG;
/* If a probe group is specified, it must be a valid one. */
if (probe_group) {
if (probe_group != &devc->analog_groups[0]
&& probe_group != &devc->analog_groups[1]) {
sr_err("Invalid probe group specified.");
return SR_ERR;
}
}
switch (id) {
case SR_CONF_NUM_TIMEBASE:
*data = g_variant_new_int32(NUM_TIMEBASE);
break;
case SR_CONF_NUM_VDIV:
if (!probe_group) {
sr_err("No probe group specified.");
return SR_ERR_PROBE_GROUP;
}
for (i = 0; i < 2; i++) {
if (probe_group == &devc->analog_groups[i]) {
*data = g_variant_new_int32(NUM_VDIV);
return SR_OK;
}
}
return SR_ERR_NA;
default:
return SR_ERR_NA;
}
return SR_OK;
}
static int config_set(int id, GVariant *data, const struct sr_dev_inst *sdi,
const struct sr_probe_group *probe_group)
{
struct dev_context *devc;
uint64_t tmp_u64, p, q;
double t_dbl;
unsigned int i, j;
int ret;
const char *tmp_str;
if (!(devc = sdi->priv))
return SR_ERR_ARG;
if (sdi->status != SR_ST_ACTIVE)
return SR_ERR_DEV_CLOSED;
/* If a probe group is specified, it must be a valid one. */
if (probe_group) {
if (probe_group != &devc->analog_groups[0]
&& probe_group != &devc->analog_groups[1]) {
sr_err("Invalid probe group specified.");
return SR_ERR;
}
}
ret = SR_OK;
switch (id) {
case SR_CONF_LIMIT_FRAMES:
devc->limit_frames = g_variant_get_uint64(data);
break;
case SR_CONF_TRIGGER_SLOPE:
tmp_u64 = g_variant_get_uint64(data);
if (tmp_u64 != 0 && tmp_u64 != 1)
return SR_ERR;
g_free(devc->trigger_slope);
devc->trigger_slope = g_strdup(tmp_u64 ? "POS" : "NEG");
ret = set_cfg(sdi, ":TRIG:EDGE:SLOP %s", devc->trigger_slope);
break;
case SR_CONF_HORIZ_TRIGGERPOS:
t_dbl = g_variant_get_double(data);
if (t_dbl < 0.0 || t_dbl > 1.0)
return SR_ERR;
devc->horiz_triggerpos = t_dbl;
/* We have the trigger offset as a percentage of the frame, but
* need to express this in seconds. */
t_dbl = -(devc->horiz_triggerpos - 0.5) * devc->timebase * NUM_TIMEBASE;
ret = set_cfg(sdi, ":TIM:OFFS %.6f", t_dbl);
break;
case SR_CONF_TIMEBASE:
g_variant_get(data, "(tt)", &p, &q);
for (i = 0; i < ARRAY_SIZE(timebases); i++) {
if (timebases[i][0] == p && timebases[i][1] == q) {
devc->timebase = (float)p / q;
ret = set_cfg(sdi, ":TIM:SCAL %.9f", devc->timebase);
break;
}
}
if (i == ARRAY_SIZE(timebases))
ret = SR_ERR_ARG;
break;
case SR_CONF_TRIGGER_SOURCE:
tmp_str = g_variant_get_string(data, NULL);
for (i = 0; i < ARRAY_SIZE(trigger_sources); i++) {
if (!strcmp(trigger_sources[i], tmp_str)) {
g_free(devc->trigger_source);
devc->trigger_source = g_strdup(trigger_sources[i]);
if (!strcmp(devc->trigger_source, "AC Line"))
tmp_str = "ACL";
else if (!strcmp(devc->trigger_source, "CH1"))
tmp_str = "CHAN1";
else if (!strcmp(devc->trigger_source, "CH2"))
tmp_str = "CHAN2";
else
tmp_str = (char *)devc->trigger_source;
ret = set_cfg(sdi, ":TRIG:EDGE:SOUR %s", tmp_str);
break;
}
}
if (i == ARRAY_SIZE(trigger_sources))
ret = SR_ERR_ARG;
break;
case SR_CONF_VDIV:
if (!probe_group) {
sr_err("No probe group specified.");
return SR_ERR_PROBE_GROUP;
}
g_variant_get(data, "(tt)", &p, &q);
for (i = 0; i < 2; i++) {
if (probe_group == &devc->analog_groups[i]) {
for (j = 0; j < ARRAY_SIZE(vdivs); j++) {
if (vdivs[j][0] != p || vdivs[j][1] != q)
continue;
devc->vdiv[i] = (float)p / q;
return set_cfg(sdi, ":CHAN%d:SCAL %.3f", i + 1,
devc->vdiv[i]);
}
return SR_ERR_ARG;
}
}
return SR_ERR_NA;
case SR_CONF_COUPLING:
if (!probe_group) {
sr_err("No probe group specified.");
return SR_ERR_PROBE_GROUP;
}
tmp_str = g_variant_get_string(data, NULL);
for (i = 0; i < 2; i++) {
if (probe_group == &devc->analog_groups[i]) {
for (j = 0; j < ARRAY_SIZE(coupling); j++) {
if (!strcmp(tmp_str, coupling[j])) {
g_free(devc->coupling[i]);
devc->coupling[i] = g_strdup(coupling[j]);
return set_cfg(sdi, ":CHAN%d:COUP %s", i + 1,
devc->coupling[i]);
}
}
return SR_ERR_ARG;
}
}
return SR_ERR_NA;
default:
ret = SR_ERR_NA;
break;
}
return ret;
}
static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi,
const struct sr_probe_group *probe_group)
{
GVariant *tuple, *rational[2];
GVariantBuilder gvb;
unsigned int i;
struct dev_context *devc;
if (key == SR_CONF_SCAN_OPTIONS) {
*data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
hwopts, ARRAY_SIZE(hwopts), sizeof(int32_t));
return SR_OK;
} else if (key == SR_CONF_DEVICE_OPTIONS && probe_group == NULL) {
*data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
hwcaps, ARRAY_SIZE(hwcaps), sizeof(int32_t));
return SR_OK;
}
/* Every other option requires a valid device instance. */
if (!sdi || !(devc = sdi->priv))
return SR_ERR_ARG;
/* If a probe group is specified, it must be a valid one. */
if (probe_group) {
if (probe_group != &devc->analog_groups[0]
&& probe_group != &devc->analog_groups[1]) {
sr_err("Invalid probe group specified.");
return SR_ERR;
}
}
switch (key) {
break;
case SR_CONF_DEVICE_OPTIONS:
if (!probe_group) {
sr_err("No probe group specified.");
return SR_ERR_PROBE_GROUP;
}
if (probe_group == &devc->digital_group) {
*data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
NULL, 0, sizeof(int32_t));
return SR_OK;
} else {
for (i = 0; i < 2; i++) {
if (probe_group == &devc->analog_groups[i]) {
*data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
analog_hwcaps, ARRAY_SIZE(analog_hwcaps), sizeof(int32_t));
return SR_OK;
}
}
return SR_ERR_NA;
}
break;
case SR_CONF_COUPLING:
if (!probe_group) {
sr_err("No probe group specified.");
return SR_ERR_PROBE_GROUP;
}
*data = g_variant_new_strv(coupling, ARRAY_SIZE(coupling));
break;
case SR_CONF_VDIV:
if (!probe_group) {
sr_err("No probe group specified.");
return SR_ERR_PROBE_GROUP;
}
g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
for (i = 0; i < ARRAY_SIZE(vdivs); i++) {
rational[0] = g_variant_new_uint64(vdivs[i][0]);
rational[1] = g_variant_new_uint64(vdivs[i][1]);
tuple = g_variant_new_tuple(rational, 2);
g_variant_builder_add_value(&gvb, tuple);
}
*data = g_variant_builder_end(&gvb);
break;
case SR_CONF_TIMEBASE:
g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
for (i = 0; i < ARRAY_SIZE(timebases); i++) {
rational[0] = g_variant_new_uint64(timebases[i][0]);
rational[1] = g_variant_new_uint64(timebases[i][1]);
tuple = g_variant_new_tuple(rational, 2);
g_variant_builder_add_value(&gvb, tuple);
}
*data = g_variant_builder_end(&gvb);
break;
case SR_CONF_TRIGGER_SOURCE:
*data = g_variant_new_strv(trigger_sources,
devc->has_digital ? ARRAY_SIZE(trigger_sources) : 4);
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;
struct sr_probe *probe;
GSList *l;
char cmd[256];
if (sdi->status != SR_ST_ACTIVE)
return SR_ERR_DEV_CLOSED;
serial = sdi->conn;
devc = sdi->priv;
for (l = sdi->probes; l; l = l->next) {
probe = l->data;
sr_dbg("handling probe %s", probe->name);
if (probe->type == SR_PROBE_ANALOG) {
if (probe->enabled)
devc->enabled_analog_probes = g_slist_append(
devc->enabled_analog_probes, probe);
if (probe->enabled != devc->analog_channels[probe->index]) {
/* Enabled channel is currently disabled, or vice versa. */
sprintf(cmd, ":CHAN%d:DISP %s", probe->index + 1,
probe->enabled ? "ON" : "OFF");
if (rigol_ds1xx2_send(sdi, cmd) != SR_OK)
return SR_ERR;
}
} else if (probe->type == SR_PROBE_LOGIC) {
if (probe->enabled)
devc->enabled_digital_probes = g_slist_append(
devc->enabled_digital_probes, probe);
if (probe->enabled != devc->digital_channels[probe->index]) {
/* Enabled channel is currently disabled, or vice versa. */
sprintf(cmd, ":DIG%d:TURN %s", probe->index,
probe->enabled ? "ON" : "OFF");
if (rigol_ds1xx2_send(sdi, cmd) != SR_OK)
return SR_ERR;
}
}
}
if (!devc->enabled_analog_probes && !devc->enabled_digital_probes)
return SR_ERR;
sr_source_add(serial->fd, G_IO_IN, 50, rigol_ds1xx2_receive, (void *)sdi);
/* Send header packet to the session bus. */
std_session_send_df_header(cb_data, LOG_PREFIX);
/* Fetch the first frame. */
if (devc->enabled_analog_probes) {
devc->channel_frame = devc->enabled_analog_probes->data;
if (rigol_ds1xx2_send(sdi, ":WAV:DATA? CHAN%d",
devc->channel_frame->index + 1) != SR_OK)
return SR_ERR;
} else {
devc->channel_frame = devc->enabled_digital_probes->data;
if (rigol_ds1xx2_send(sdi, ":WAV:DATA? DIG") != SR_OK)
return SR_ERR;
}
devc->num_frame_bytes = 0;
return SR_OK;
}
static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
{
struct dev_context *devc;
struct sr_serial_dev_inst *serial;
(void)cb_data;
devc = sdi->priv;
if (sdi->status != SR_ST_ACTIVE) {
sr_err("Device inactive, can't stop acquisition.");
return SR_ERR;
}
g_slist_free(devc->enabled_analog_probes);
g_slist_free(devc->enabled_digital_probes);
devc->enabled_analog_probes = NULL;
devc->enabled_digital_probes = NULL;
serial = sdi->conn;
sr_source_remove(serial->fd);
return SR_OK;
}
SR_PRIV struct sr_dev_driver rigol_ds1xx2_driver_info = {
.name = "rigol-ds1xx2",
.longname = "Rigol DS1xx2",
.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 = dev_close,
.dev_acquisition_start = dev_acquisition_start,
.dev_acquisition_stop = dev_acquisition_stop,
.priv = NULL,
};
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