libsigrok/hardware/link-mso19/api.c

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/*
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* This file is part of the libsigrok project.
*
* Copyright (C) 2011 Daniel Ribeiro <drwyrm@gmail.com>
* Copyright (C) 2012 Renato Caldas <rmsc@fe.up.pt>
* Copyright (C) 2013 Lior Elazary <lelazary@yahoo.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 "protocol.h"
static const int32_t hwcaps[] = {
SR_CONF_OSCILLOSCOPE,
SR_CONF_LOGIC_ANALYZER,
SR_CONF_SAMPLERATE,
SR_CONF_TRIGGER_SLOPE,
SR_CONF_HORIZ_TRIGGERPOS,
// SR_CONF_CAPTURE_RATIO,
SR_CONF_LIMIT_SAMPLES,
// SR_CONF_RLE,
};
/*
* Probes are numbered 0 to 7.
*
* See also: http://www.linkinstruments.com/images/mso19_1113.gif
*/
SR_PRIV const char *mso19_probe_names[NUM_PROBES + 1] = {
/* Note: DSO needs to be first. */
"DSO", "0", "1", "2", "3", "4", "5", "6", "7", NULL,
};
static const uint64_t samplerates[] = {
SR_HZ(100),
SR_MHZ(200),
SR_HZ(100),
};
SR_PRIV struct sr_dev_driver link_mso19_driver_info;
static struct sr_dev_driver *di = &link_mso19_driver_info;
/* TODO: Use sr_dev_inst to store connection handle & use std_dev_clear(). */
static int dev_clear(void)
{
GSList *l;
struct sr_dev_inst *sdi;
struct drv_context *drvc;
struct dev_context *devc;
int ret = SR_OK;
if (!(drvc = di->priv))
return SR_OK;
/* Properly close and free all devices. */
for (l = drvc->instances; l; l = l->next) {
if (!(sdi = l->data)) {
/* Log error, but continue cleaning up the rest. */
sr_err("%s: sdi was NULL, continuing", __func__);
ret = SR_ERR_BUG;
continue;
}
if (!(devc = sdi->priv)) {
/* Log error, but continue cleaning up the rest. */
sr_err("%s: sdi->priv was NULL, continuing", __func__);
ret = SR_ERR_BUG;
continue;
}
std_serial_dev_close(sdi);
sr_serial_dev_inst_free(devc->serial);
sr_dev_inst_free(sdi);
}
g_slist_free(drvc->instances);
drvc->instances = NULL;
return ret;
}
static int init(struct sr_context *sr_ctx)
{
return std_init(sr_ctx, di, LOG_PREFIX);
}
static GSList *scan(GSList *options)
{
int i;
GSList *devices = NULL;
const char *conn = NULL;
const char *serialcomm = NULL;
GSList *l;
struct sr_config *src;
struct udev *udev;
int ptype;
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:
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serialcomm = g_variant_get_string(src->data, NULL);
break;
}
}
if (!conn)
conn = SERIALCONN;
if (serialcomm == NULL)
serialcomm = SERIALCOMM;
udev = udev_new();
if (!udev) {
sr_err("Failed to initialize udev.");
}
struct udev_enumerate *enumerate = udev_enumerate_new(udev);
udev_enumerate_add_match_subsystem(enumerate, "usb-serial");
udev_enumerate_scan_devices(enumerate);
struct udev_list_entry *devs = udev_enumerate_get_list_entry(enumerate);
struct udev_list_entry *dev_list_entry;
for (dev_list_entry = devs;
dev_list_entry != NULL;
dev_list_entry = udev_list_entry_get_next(dev_list_entry)) {
const char *syspath = udev_list_entry_get_name(dev_list_entry);
struct udev_device *dev =
udev_device_new_from_syspath(udev, syspath);
const char *sysname = udev_device_get_sysname(dev);
struct udev_device *parent =
udev_device_get_parent_with_subsystem_devtype(dev, "usb",
"usb_device");
if (!parent) {
sr_err("Unable to find parent usb device for %s",
sysname);
continue;
}
const char *idVendor =
udev_device_get_sysattr_value(parent, "idVendor");
const char *idProduct =
udev_device_get_sysattr_value(parent, "idProduct");
if (strcmp(USB_VENDOR, idVendor)
|| strcmp(USB_PRODUCT, idProduct))
continue;
const char *iSerial =
udev_device_get_sysattr_value(parent, "serial");
const char *iProduct =
udev_device_get_sysattr_value(parent, "product");
char path[32];
snprintf(path, sizeof(path), "/dev/%s", sysname);
conn = path;
size_t s = strcspn(iProduct, " ");
char product[32];
char manufacturer[32];
if (s > sizeof(product) ||
strlen(iProduct) - s > sizeof(manufacturer)) {
sr_err("Could not parse iProduct: %s.", iProduct);
continue;
}
strncpy(product, iProduct, s);
product[s] = 0;
strcpy(manufacturer, iProduct + s + 1);
//Create the device context and set its params
struct dev_context *devc;
if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) {
sr_err("Device context malloc failed.");
return devices;
}
if (mso_parse_serial(iSerial, iProduct, devc) != SR_OK) {
sr_err("Invalid iSerial: %s.", iSerial);
g_free(devc);
return devices;
}
char hwrev[32];
sprintf(hwrev, "r%d", devc->hwrev);
devc->ctlbase1 = 0;
devc->protocol_trigger.spimode = 0;
for (i = 0; i < 4; i++) {
devc->protocol_trigger.word[i] = 0;
devc->protocol_trigger.mask[i] = 0xff;
}
if (!(devc->serial = sr_serial_dev_inst_new(conn, serialcomm))) {
g_free(devc);
return devices;
}
struct sr_dev_inst *sdi = sr_dev_inst_new(0, SR_ST_INACTIVE,
manufacturer, product, hwrev);
if (!sdi) {
sr_err("Unable to create device instance for %s",
sysname);
sr_dev_inst_free(sdi);
g_free(devc);
return devices;
}
sdi->driver = di;
sdi->priv = devc;
for (i = 0; i < NUM_PROBES; i++) {
struct sr_probe *probe;
ptype = (i == 0) ? SR_PROBE_ANALOG : SR_PROBE_LOGIC;
if (!(probe = sr_probe_new(i, ptype, TRUE,
mso19_probe_names[i])))
return 0;
sdi->probes = g_slist_append(sdi->probes, probe);
}
//Add the driver
struct drv_context *drvc = di->priv;
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)
{
int ret;
struct dev_context *devc;
devc = sdi->priv;
if (serial_open(devc->serial, SERIAL_RDWR) != SR_OK)
return SR_ERR;
sdi->status = SR_ST_ACTIVE;
/* FIXME: discard serial buffer */
mso_check_trigger(devc->serial, &devc->trigger_state);
sr_dbg("Trigger state: 0x%x.", devc->trigger_state);
ret = mso_reset_adc(sdi);
if (ret != SR_OK)
return ret;
mso_check_trigger(devc->serial, &devc->trigger_state);
sr_dbg("Trigger state: 0x%x.", devc->trigger_state);
// ret = mso_reset_fsm(sdi);
// if (ret != SR_OK)
// return ret;
// return SR_ERR;
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;
(void)probe_group;
switch (id) {
case SR_CONF_SAMPLERATE:
if (sdi) {
devc = sdi->priv;
*data = g_variant_new_uint64(devc->cur_rate);
} else
return SR_ERR;
break;
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)
{
int ret;
struct dev_context *devc;
uint64_t num_samples, slope;
int trigger_pos;
double pos;
(void)probe_group;
devc = sdi->priv;
if (sdi->status != SR_ST_ACTIVE)
return SR_ERR_DEV_CLOSED;
switch (id) {
case SR_CONF_SAMPLERATE:
// FIXME
return mso_configure_rate(sdi, g_variant_get_uint64(data));
ret = SR_OK;
break;
case SR_CONF_LIMIT_SAMPLES:
num_samples = g_variant_get_uint64(data);
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if (num_samples != 1024) {
sr_err("Only 1024 samples are supported.");
ret = SR_ERR_ARG;
} else {
devc->limit_samples = num_samples;
sr_dbg("setting limit_samples to %i\n",
num_samples);
ret = SR_OK;
}
break;
case SR_CONF_CAPTURE_RATIO:
ret = SR_OK;
break;
case SR_CONF_TRIGGER_SLOPE:
slope = g_variant_get_uint64(data);
if (slope != SLOPE_NEGATIVE && slope != SLOPE_POSITIVE) {
sr_err("Invalid trigger slope");
ret = SR_ERR_ARG;
} else {
devc->trigger_slope = slope;
ret = SR_OK;
}
break;
case SR_CONF_HORIZ_TRIGGERPOS:
pos = g_variant_get_double(data);
if (pos < 0 || pos > 255) {
sr_err("Trigger position (%f) should be between 0 and 255.", pos);
ret = SR_ERR_ARG;
} else {
trigger_pos = (int)pos;
devc->trigger_holdoff[0] = trigger_pos & 0xff;
ret = SR_OK;
}
break;
case SR_CONF_RLE:
ret = SR_OK;
break;
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)
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{
GVariant *gvar;
GVariantBuilder gvb;
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(void)probe_group;
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(void)sdi;
switch (key) {
case SR_CONF_DEVICE_OPTIONS:
*data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
hwcaps, ARRAY_SIZE(hwcaps), sizeof(int32_t));
break;
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case SR_CONF_SAMPLERATE:
g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), samplerates,
ARRAY_SIZE(samplerates), sizeof(uint64_t));
g_variant_builder_add(&gvb, "{sv}", "samplerate-steps", gvar);
*data = g_variant_builder_end(&gvb);
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break;
case SR_CONF_TRIGGER_TYPE:
*data = g_variant_new_string(TRIGGER_TYPE);
break;
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default:
return SR_ERR_NA;
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}
return SR_OK;
}
static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data)
{
struct dev_context *devc;
int ret = SR_ERR;
if (sdi->status != SR_ST_ACTIVE)
return SR_ERR_DEV_CLOSED;
devc = sdi->priv;
if (mso_configure_probes(sdi) != SR_OK) {
sr_err("Failed to configure probes.");
return SR_ERR;
}
/* FIXME: No need to do full reconfigure every time */
// ret = mso_reset_fsm(sdi);
// if (ret != SR_OK)
// return ret;
/* FIXME: ACDC Mode */
devc->ctlbase1 &= 0x7f;
// devc->ctlbase1 |= devc->acdcmode;
ret = mso_configure_rate(sdi, devc->cur_rate);
if (ret != SR_OK)
return ret;
/* set dac offset */
ret = mso_dac_out(sdi, devc->dac_offset);
if (ret != SR_OK)
return ret;
ret = mso_configure_threshold_level(sdi);
if (ret != SR_OK)
return ret;
ret = mso_configure_trigger(sdi);
if (ret != SR_OK)
return ret;
/* END of config hardware part */
ret = mso_arm(sdi);
if (ret != SR_OK)
return ret;
/* Start acquisition on the device. */
mso_check_trigger(devc->serial, &devc->trigger_state);
ret = mso_check_trigger(devc->serial, NULL);
if (ret != SR_OK)
return ret;
/* Reset trigger state. */
devc->trigger_state = 0x00;
/* Send header packet to the session bus. */
std_session_send_df_header(cb_data, LOG_PREFIX);
/* Our first probe is analog, the other 8 are of type 'logic'. */
/* TODO. */
serial_source_add(devc->serial, G_IO_IN, -1, mso_receive_data, cb_data);
return SR_OK;
}
/* This stops acquisition on ALL devices, ignoring dev_index. */
static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
{
(void)cb_data;
stop_acquisition(sdi);
return SR_OK;
}
SR_PRIV struct sr_dev_driver link_mso19_driver_info = {
.name = "link-mso19",
.longname = "Link Instruments MSO-19",
.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,
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.config_list = config_list,
.dev_open = dev_open,
.dev_close = std_serial_dev_close,
.dev_acquisition_start = dev_acquisition_start,
.dev_acquisition_stop = dev_acquisition_stop,
.priv = NULL,
};