libsigrok/hardware/uni-t-dmm/api.c

308 lines
6.7 KiB
C

/*
* This file is part of the sigrok project.
*
* Copyright (C) 2012 Uwe Hermann <uwe@hermann-uwe.de>
*
* 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 2 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, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <stdlib.h>
#include <string.h>
#include "libsigrok.h"
#include "libsigrok-internal.h"
#include "protocol.h"
#define UNI_T_UT_D04_NEW "1a86.e008"
static const int hwopts[] = {
SR_CONF_CONN,
0,
};
static const int hwcaps[] = {
SR_CONF_MULTIMETER,
SR_CONF_LIMIT_SAMPLES,
SR_CONF_LIMIT_MSEC,
SR_CONF_CONTINUOUS,
0,
};
SR_PRIV struct sr_dev_driver uni_t_ut61d_driver_info;
SR_PRIV struct sr_dev_driver voltcraft_vc820_driver_info;
static struct sr_dev_driver *di_ut61d = &uni_t_ut61d_driver_info;
static struct sr_dev_driver *di_vc820 = &voltcraft_vc820_driver_info;
/* After hw_init() this will point to a device-specific entry (see above). */
static struct sr_dev_driver *di = NULL;
static int clear_instances(void)
{
/* TODO: Use common code later. */
return SR_OK;
}
static int hw_init(struct sr_context *sr_ctx, int dmm)
{
if (dmm == UNI_T_UT61D)
di = di_ut61d;
else if (dmm == VOLTCRAFT_VC820)
di = di_vc820;
sr_dbg("Selected '%s' subdriver.", di->name);
return std_hw_init(sr_ctx, di, DRIVER_LOG_DOMAIN);
}
static int hw_init_ut61d(struct sr_context *sr_ctx)
{
return hw_init(sr_ctx, UNI_T_UT61D);
}
static int hw_init_vc820(struct sr_context *sr_ctx)
{
return hw_init(sr_ctx, VOLTCRAFT_VC820);
}
static GSList *hw_scan(GSList *options)
{
GSList *usb_devices, *devices, *l;
struct sr_dev_inst *sdi;
struct dev_context *devc;
struct drv_context *drvc;
struct sr_usb_dev_inst *usb;
struct sr_config *src;
struct sr_probe *probe;
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 = src->value;
break;
}
}
if (!conn)
conn = UNI_T_UT_D04_NEW;
devices = NULL;
if (!(usb_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn))) {
g_slist_free_full(usb_devices, g_free);
return NULL;
}
for (l = usb_devices; l; l = l->next) {
usb = l->data;
if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) {
sr_err("Device context malloc failed.");
return NULL;
}
if (!(sdi = sr_dev_inst_new(0, SR_ST_INACTIVE,
di->longname, NULL, NULL))) {
sr_err("sr_dev_inst_new returned NULL.");
return NULL;
}
sdi->priv = devc;
sdi->driver = di;
if (!(probe = sr_probe_new(0, SR_PROBE_ANALOG, TRUE, "P1")))
return NULL;
sdi->probes = g_slist_append(sdi->probes, probe);
devc->usb = usb;
drvc->instances = g_slist_append(drvc->instances, sdi);
devices = g_slist_append(devices, sdi);
}
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)
{
struct drv_context *drvc;
struct dev_context *devc;
drvc = di->priv;
devc = sdi->priv;
return sr_usb_open(drvc->sr_ctx->libusb_ctx, devc->usb);
}
static int hw_dev_close(struct sr_dev_inst *sdi)
{
(void)sdi;
/* TODO */
return SR_OK;
}
static int hw_cleanup(void)
{
clear_instances();
return SR_OK;
}
static int config_set(int id, const void *value, const struct sr_dev_inst *sdi)
{
struct dev_context *devc;
devc = sdi->priv;
switch (id) {
case SR_CONF_LIMIT_MSEC:
/* TODO: Not yet implemented. */
if (*(const uint64_t *)value == 0) {
sr_err("Time limit cannot be 0.");
return SR_ERR;
}
devc->limit_msec = *(const uint64_t *)value;
sr_dbg("Setting time limit to %" PRIu64 "ms.",
devc->limit_msec);
break;
case SR_CONF_LIMIT_SAMPLES:
if (*(const uint64_t *)value == 0) {
sr_err("Sample limit cannot be 0.");
return SR_ERR;
}
devc->limit_samples = *(const uint64_t *)value;
sr_dbg("Setting sample limit to %" PRIu64 ".",
devc->limit_samples);
break;
default:
sr_err("Unknown capability: %d.", id);
return SR_ERR;
break;
}
return SR_OK;
}
static int config_list(int key, const void **data, const struct sr_dev_inst *sdi)
{
(void)sdi;
switch (key) {
case SR_CONF_SCAN_OPTIONS:
*data = hwopts;
break;
case SR_CONF_DEVICE_OPTIONS:
*data = hwcaps;
break;
default:
return SR_ERR_ARG;
}
return SR_OK;
}
static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi,
void *cb_data)
{
struct dev_context *devc;
devc = sdi->priv;
devc->cb_data = cb_data;
/* Send header packet to the session bus. */
std_session_send_df_header(cb_data, DRIVER_LOG_DOMAIN);
if (!strcmp(di->name, "uni-t-ut61d")) {
sr_source_add(0, 0, 10 /* poll_timeout */,
uni_t_ut61d_receive_data, (void *)sdi);
} else if (!strcmp(di->name, "voltcraft-vc820")) {
sr_source_add(0, 0, 10 /* poll_timeout */,
voltcraft_vc820_receive_data, (void *)sdi);
}
return SR_OK;
}
static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
{
struct sr_datafeed_packet packet;
(void)sdi;
sr_dbg("Stopping acquisition.");
/* Send end packet to the session bus. */
sr_dbg("Sending SR_DF_END.");
packet.type = SR_DF_END;
sr_session_send(cb_data, &packet);
/* TODO? */
sr_source_remove(0);
return SR_OK;
}
SR_PRIV struct sr_dev_driver uni_t_ut61d_driver_info = {
.name = "uni-t-ut61d",
.longname = "UNI-T UT61D",
.api_version = 1,
.init = hw_init_ut61d,
.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,
};
SR_PRIV struct sr_dev_driver voltcraft_vc820_driver_info = {
.name = "voltcraft-vc820",
.longname = "Voltcraft VC-820",
.api_version = 1,
.init = hw_init_vc820,
.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,
};