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/*
* This file is part of the bladeRF project:
* http://www.github.com/nuand/bladeRF
*
* Copyright (C) 2016 Nuand LLC
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <libbladeRF.h>
#include "log.h"
#include "fpga_trigger.h"
static bool is_valid_signal(bladerf_trigger_signal signal)
{
switch (signal) {
case BLADERF_TRIGGER_J71_4:
case BLADERF_TRIGGER_J51_1:
case BLADERF_TRIGGER_MINI_EXP_1:
case BLADERF_TRIGGER_USER_0:
case BLADERF_TRIGGER_USER_1:
case BLADERF_TRIGGER_USER_2:
case BLADERF_TRIGGER_USER_3:
case BLADERF_TRIGGER_USER_4:
case BLADERF_TRIGGER_USER_5:
case BLADERF_TRIGGER_USER_6:
case BLADERF_TRIGGER_USER_7:
return true;
default:
log_debug("Invalid trigger signal: %d\n", signal);
return false;
}
}
int fpga_trigger_read(struct bladerf *dev, bladerf_channel ch,
bladerf_trigger_signal signal, uint8_t *regval)
{
if (ch != BLADERF_CHANNEL_RX(0) && ch != BLADERF_CHANNEL_TX(0))
return BLADERF_ERR_INVAL;
if (!is_valid_signal(signal))
return BLADERF_ERR_INVAL;
return dev->backend->read_trigger(dev, ch, signal, regval);
}
int fpga_trigger_write(struct bladerf *dev, bladerf_channel ch,
bladerf_trigger_signal signal, uint8_t regval)
{
if (ch != BLADERF_CHANNEL_RX(0) && ch != BLADERF_CHANNEL_TX(0))
return BLADERF_ERR_INVAL;
if (!is_valid_signal(signal))
return BLADERF_ERR_INVAL;
return dev->backend->write_trigger(dev, ch, signal, regval);
}
int fpga_trigger_init(struct bladerf *dev, bladerf_channel ch,
bladerf_trigger_signal signal,
struct bladerf_trigger *trigger)
{
int status;
uint8_t regval;
trigger->options = 0;
status = fpga_trigger_read(dev, ch, signal, ®val);
if (status != 0) {
trigger->channel = BLADERF_CHANNEL_INVALID;
trigger->role = BLADERF_TRIGGER_ROLE_INVALID;
trigger->signal = BLADERF_TRIGGER_INVALID;
return status;
}
if ((regval & BLADERF_TRIGGER_REG_MASTER) != 0) {
trigger->role = BLADERF_TRIGGER_ROLE_MASTER;
} else {
trigger->role = BLADERF_TRIGGER_ROLE_SLAVE;
}
trigger->channel = ch;
trigger->signal = signal;
return 0;
}
int fpga_trigger_arm(struct bladerf *dev,
const struct bladerf_trigger *trigger, bool arm)
{
int status;
uint8_t regval;
status = fpga_trigger_read(dev, trigger->channel, trigger->signal, ®val);
if (status != 0) {
return status;
}
/* Reset any previous fire request */
regval &= ~BLADERF_TRIGGER_REG_FIRE;
if (arm) {
regval |= BLADERF_TRIGGER_REG_ARM;
} else {
regval &= ~BLADERF_TRIGGER_REG_ARM;
}
switch (trigger->role) {
case BLADERF_TRIGGER_ROLE_MASTER:
regval |= BLADERF_TRIGGER_REG_MASTER;
break;
case BLADERF_TRIGGER_ROLE_SLAVE:
regval &= ~BLADERF_TRIGGER_REG_MASTER;
break;
case BLADERF_TRIGGER_ROLE_DISABLED:
regval = 0;
break;
default:
log_debug("Invalid trigger role: %d\n", trigger->role);
return BLADERF_ERR_INVAL;
}
status = fpga_trigger_write(dev, trigger->channel, trigger->signal, regval);
return status;
}
int fpga_trigger_fire(struct bladerf *dev,
const struct bladerf_trigger *trigger)
{
int status;
uint8_t regval;
status = fpga_trigger_read(dev, trigger->channel, trigger->signal, ®val);
if (status != 0) {
return status;
}
regval |= BLADERF_TRIGGER_REG_FIRE;
status = fpga_trigger_write(dev, trigger->channel, trigger->signal, regval);
return status;
}
int fpga_trigger_state(struct bladerf *dev, const struct bladerf_trigger *trigger,
bool *is_armed, bool *fired, bool *fire_requested)
{
int status;
uint8_t regval;
status = fpga_trigger_read(dev, trigger->channel, trigger->signal, ®val);
if (status != 0) {
*fired = false;
return status;
}
if (is_armed != NULL) {
*is_armed = (regval & BLADERF_TRIGGER_REG_ARM) != 0;
}
if (fired != NULL) {
/* Signal is active-low */
*fired = (regval & BLADERF_TRIGGER_REG_LINE) == 0;
}
if (fire_requested != NULL) {
if (trigger->role == BLADERF_TRIGGER_ROLE_MASTER) {
*fire_requested = (regval & BLADERF_TRIGGER_REG_FIRE) != 0;
} else {
*fire_requested = false;
}
}
return status;
}
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