libsigrok/hardware/nexus-osciprime/api.c

326 lines
6.4 KiB
C

/*
* This file is part of the libsigrok project.
*
* Copyright (C) 2012 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>
#include <glib.h>
#include "libsigrok.h"
#include "libsigrok-internal.h"
#include "protocol.h"
#define OSCI_VENDOR "Nexus Computing"
#define OSCI_MODEL "OsciPrime"
#define OSCI_VERSION "1.0"
#define OSCI_FIRMWARE FIRMWARE_DIR "/nexus-osciprime.fw"
#define OSCI_VIDPID "04b4.1004"
static const int32_t hwopts[] = {
SR_CONF_CONN,
SR_CONF_SERIALCOMM,
};
static const int32_t hwcaps[] = {
SR_CONF_OSCILLOSCOPE,
SR_CONF_LIMIT_SAMPLES,
SR_CONF_CONTINUOUS,
SR_CONF_TIMEBASE,
SR_CONF_VDIV,
};
static const struct sr_rational timebases[] = {
/* 24 MHz */
{ 42, 1e9 },
/* 12 MHz */
{ 83, 1e9 },
/* 6 MHz */
{ 167, 1e9 },
/* 3 MHz */
{ 333, 1e9 },
/* 1.5 MHz */
{ 667, 1e9 },
/* 750 kHz */
{ 1333, 1e9 },
/* 375 kHz */
{ 2667, 1e9 },
/* 187.5 kHz */
{ 5333, 1e9 },
/* 93.25 kHz */
{ 10724, 1e9 },
/* 46.875 kHz */
{ 21333, 1e9 },
/* 23.4375 kHz */
{ 42666, 1e9 },
/* 11.718 kHz */
{ 85339, 1e9 },
/* 5.859 kHz */
{ 170678, 1e9 },
/* 2.929 kHz */
{ 341413, 1e9 },
/* 1.465 kHz */
{ 682594, 1e9 },
/* 732 Hz */
{ 1366, 1e6 },
/* 366 Hz */
{ 2732, 1e6 },
/* 183 Hz */
{ 5464, 1e6 },
/* 91 Hz */
{ 10989, 1e6 },
/* 46 Hz */
{ 21739, 1e6 },
/* 23 Hz */
{ 43478, 1e6 },
/* 12 Hz */
{ 83333, 1e6 },
};
static const char *probe_names[] = {
"CHA", "CHB",
NULL,
};
static const struct sr_rational vdivs[] = {
{ 1, 1 },
{ 2, 1 },
{ 5, 2 },
{ 5, 1 },
{ 10, 1 },
};
SR_PRIV struct sr_dev_driver nexus_osciprime_driver_info;
static struct sr_dev_driver *di = &nexus_osciprime_driver_info;
static int hw_dev_close(struct sr_dev_inst *sdi);
/* Properly close and free all devices. */
static int clear_instances(void)
{
struct sr_dev_inst *sdi;
struct drv_context *drvc;
struct dev_context *devc;
GSList *l;
if (!(drvc = di->priv))
return SR_OK;
for (l = drvc->instances; l; l = l->next) {
if (!(sdi = l->data))
continue;
if (!(devc = sdi->priv))
continue;
hw_dev_close(sdi);
sr_usb_dev_inst_free(devc->usb);
sr_dev_inst_free(sdi);
}
g_slist_free(drvc->instances);
drvc->instances = NULL;
return SR_OK;
}
static int hw_init(struct sr_context *sr_ctx)
{
return std_hw_init(sr_ctx, di, DRIVER_LOG_DOMAIN);
}
static GSList *hw_scan(GSList *options)
{
struct drv_context *drvc;
struct dev_context *devc;
struct sr_dev_inst *sdi;
struct sr_usb_dev_inst *usb;
struct sr_config *src;
struct sr_probe *probe;
libusb_device *dev;
GSList *usb_devices, *devices, *l;
int i;
const char *conn;
(void)options;
drvc = di->priv;
/* USB scan is always authoritative. */
clear_instances();
conn = 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;
}
}
if (!conn)
conn = OSCI_VIDPID;
devices = NULL;
if ((usb_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn))) {
for (l = usb_devices; l; l = l->next) {
usb = l->data;
if (!(sdi = sr_dev_inst_new(0, SR_ST_INACTIVE,
OSCI_VENDOR, OSCI_MODEL, OSCI_VERSION)))
return NULL;
sdi->driver = di;
for (i = 0; probe_names[i]; i++) {
if (!(probe = sr_probe_new(i, SR_PROBE_ANALOG, TRUE,
probe_names[i])))
return NULL;
sdi->probes = g_slist_append(sdi->probes, probe);
}
if (!(devc = g_try_malloc0(sizeof(struct dev_context))))
return NULL;
sdi->priv = devc;
devc->usb = usb;
if (strcmp(conn, OSCI_VIDPID)) {
if (sr_usb_open(drvc->sr_ctx->libusb_ctx, usb) != SR_OK)
break;
dev = libusb_get_device(usb->devhdl);
if (ezusb_upload_firmware(dev, 0, OSCI_FIRMWARE) == SR_OK)
/* Remember when the firmware on this device was updated */
devc->fw_updated = g_get_monotonic_time();
else
sr_err("Firmware upload failed for device "
"at bus %d address %d.", usb->bus, usb->address);
}
drvc->instances = g_slist_append(drvc->instances, sdi);
devices = g_slist_append(devices, sdi);
}
g_slist_free(usb_devices);
} else
g_slist_free_full(usb_devices, g_free);
return devices;
}
static GSList *hw_dev_list(void)
{
return ((struct drv_context *)(di->priv))->instances;
}
static int hw_dev_open(struct sr_dev_inst *sdi)
{
/* TODO */
(void)sdi;
return SR_OK;
}
static int hw_dev_close(struct sr_dev_inst *sdi)
{
/* TODO */
(void)sdi;
return SR_OK;
}
static int hw_cleanup(void)
{
clear_instances();
/* TODO */
return SR_OK;
}
static int config_set(int id, GVariant *data, const struct sr_dev_inst *sdi)
{
int ret;
/* TODO */
(void)data;
if (sdi->status != SR_ST_ACTIVE) {
sr_err("Device inactive, can't set config options.");
return SR_ERR;
}
ret = SR_OK;
switch (id) {
default:
ret = SR_ERR_NA;
}
return ret;
}
static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi)
{
(void)sdi;
(void)data;
switch (key) {
default:
return SR_ERR_NA;
}
return SR_OK;
}
static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi,
void *cb_data)
{
/* TODO */
(void)sdi;
(void)cb_data;
return SR_OK;
}
static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
{
(void)cb_data;
if (sdi->status != SR_ST_ACTIVE) {
sr_err("Device inactive, can't stop acquisition.");
return SR_ERR;
}
/* TODO */
return SR_OK;
}
SR_PRIV struct sr_dev_driver nexus_osciprime_driver_info = {
.name = "nexus-osciprime",
.longname = "Nexus OsciPrime",
.api_version = 1,
.init = hw_init,
.cleanup = hw_cleanup,
.scan = hw_scan,
.dev_list = hw_dev_list,
.dev_clear = clear_instances,
.config_get = NULL,
.config_set = config_set,
.config_list = config_list,
.dev_open = hw_dev_open,
.dev_close = hw_dev_close,
.dev_acquisition_start = hw_dev_acquisition_start,
.dev_acquisition_stop = hw_dev_acquisition_stop,
.priv = NULL,
};