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/*
* This file is part of the bladeRF project:
* http://www.github.com/nuand/bladeRF
*
* Copyright (C) 2014 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 "xb300.h"
#include "log.h"
#define BLADERF_XB_AUX_EN 0x000002
#define BLADERF_XB_TX_LED 0x000010
#define BLADERF_XB_RX_LED 0x000020
#define BLADERF_XB_TRX_TXn 0x000040
#define BLADERF_XB_TRX_RXn 0x000080
#define BLADERF_XB_TRX_MASK 0x0000c0
#define BLADERF_XB_PA_EN 0x000200
#define BLADERF_XB_LNA_ENn 0x000400
#define BLADERF_XB_CS 0x010000
#define BLADERF_XB_CSEL 0x040000
#define BLADERF_XB_DOUT 0x100000
#define BLADERF_XB_SCLK 0x400000
int xb300_attach(struct bladerf *dev) {
int status;
uint32_t val;
val = BLADERF_XB_TX_LED | BLADERF_XB_RX_LED | BLADERF_XB_TRX_MASK;
val |= BLADERF_XB_PA_EN | BLADERF_XB_LNA_ENn;
val |= BLADERF_XB_CSEL | BLADERF_XB_SCLK | BLADERF_XB_CS;
if ((status = dev->backend->expansion_gpio_dir_write(dev, 0xffffffff, val)))
return status;
val = BLADERF_XB_CS | BLADERF_XB_LNA_ENn;
if ((status = dev->backend->expansion_gpio_write(dev, 0xffffffff, val)))
return status;
return status;
}
void xb300_detach(struct bladerf *dev)
{
}
int xb300_enable(struct bladerf *dev, bool enable)
{
int status;
uint32_t val;
float pwr;
val = BLADERF_XB_CS | BLADERF_XB_CSEL | BLADERF_XB_LNA_ENn;
if ((status = dev->backend->expansion_gpio_write(dev, 0xffffffff, val)))
return status;
status = xb300_get_output_power(dev, &pwr);
return status;
}
int xb300_init(struct bladerf *dev)
{
int status;
log_verbose( "Setting TRX path to TX\n" );
status = xb300_set_trx(dev, BLADERF_XB300_TRX_TX);
if (status != 0) {
return status;
}
return 0;
}
int xb300_set_trx(struct bladerf *dev, bladerf_xb300_trx trx)
{
int status;
uint32_t val;
status = dev->backend->expansion_gpio_read(dev, &val);
if (status != 0) {
return status;
}
val &= ~(BLADERF_XB_TRX_MASK);
switch (trx) {
case BLADERF_XB300_TRX_RX:
val |= BLADERF_XB_TRX_RXn;
break;
case BLADERF_XB300_TRX_TX:
val |= BLADERF_XB_TRX_TXn;
break;
case BLADERF_XB300_TRX_UNSET:
break;
default:
log_debug("Invalid TRX option: %d\n", trx);
return BLADERF_ERR_INVAL;
}
status = dev->backend->expansion_gpio_write(dev, 0xffffffff, val);
return status;
}
int xb300_get_trx(struct bladerf *dev, bladerf_xb300_trx *trx)
{
int status;
uint32_t val;
*trx = BLADERF_XB300_TRX_INVAL;
status = dev->backend->expansion_gpio_read(dev, &val);
if (status != 0) {
return status;
}
val &= BLADERF_XB_TRX_MASK;
if (!val) {
*trx = BLADERF_XB300_TRX_UNSET;
} else {
*trx = (val & BLADERF_XB_TRX_RXn) ? BLADERF_XB300_TRX_RX : BLADERF_XB300_TRX_TX;
}
/* Sanity check */
switch (*trx) {
case BLADERF_XB300_TRX_TX:
case BLADERF_XB300_TRX_RX:
case BLADERF_XB300_TRX_UNSET:
break;
default:
log_debug("Read back invalid TRX setting value: %d\n", *trx);
status = BLADERF_ERR_INVAL;
}
return status;
}
int xb300_set_amplifier_enable(struct bladerf *dev,
bladerf_xb300_amplifier amp, bool enable) {
int status;
uint32_t val;
status = dev->backend->expansion_gpio_read(dev, &val);
if (status != 0) {
return status;
}
switch (amp) {
case BLADERF_XB300_AMP_PA:
if (enable) {
val |= BLADERF_XB_TX_LED;
val |= BLADERF_XB_PA_EN;
} else {
val &= ~BLADERF_XB_TX_LED;
val &= ~BLADERF_XB_PA_EN;
}
break;
case BLADERF_XB300_AMP_LNA:
if (enable) {
val |= BLADERF_XB_RX_LED;
val &= ~BLADERF_XB_LNA_ENn;
} else {
val &= ~BLADERF_XB_RX_LED;
val |= BLADERF_XB_LNA_ENn;
}
break;
case BLADERF_XB300_AMP_PA_AUX:
if (enable) {
val |= BLADERF_XB_AUX_EN;
} else {
val &= ~BLADERF_XB_AUX_EN;
}
break;
default:
log_debug("Invalid amplifier selection: %d\n", amp);
return BLADERF_ERR_INVAL;
}
status = dev->backend->expansion_gpio_write(dev, 0xffffffff, val);
return status;
}
int xb300_get_amplifier_enable(struct bladerf *dev,
bladerf_xb300_amplifier amp, bool *enable)
{
int status;
uint32_t val;
*enable = false;
status = dev->backend->expansion_gpio_read(dev, &val);
if (status != 0) {
return status;
}
switch (amp) {
case BLADERF_XB300_AMP_PA:
*enable = (val & BLADERF_XB_PA_EN);
break;
case BLADERF_XB300_AMP_LNA:
*enable = !(val & BLADERF_XB_LNA_ENn);
break;
case BLADERF_XB300_AMP_PA_AUX:
*enable = (val & BLADERF_XB_AUX_EN);
break;
default:
log_debug("Read back invalid amplifier setting: %d\n", amp);
status = BLADERF_ERR_INVAL;
}
return status;
}
int xb300_get_output_power(struct bladerf *dev, float *pwr)
{
uint32_t val, rval;
int i;
int ret = 0;
int status;
float volt, volt2, volt3, volt4;
status = dev->backend->expansion_gpio_read(dev, &val);
if (status) {
return status;
}
val &= ~(BLADERF_XB_CS | BLADERF_XB_SCLK | BLADERF_XB_CSEL);
status = dev->backend->expansion_gpio_write(dev, 0xffffffff, BLADERF_XB_SCLK | val);
if (status) {
return status;
}
status = dev->backend->expansion_gpio_write(dev, 0xffffffff, BLADERF_XB_CS | BLADERF_XB_SCLK | val);
if (status) {
return status;
}
for (i = 1; i <= 14; i++) {
status = dev->backend->expansion_gpio_write(dev, 0xffffffff, val);
if (status) {
return status;
}
status = dev->backend->expansion_gpio_write(dev, 0xffffffff, BLADERF_XB_SCLK | val);
if (status) {
return status;
}
status = dev->backend->expansion_gpio_read(dev, &rval);
if (status) {
return status;
}
if (i >= 2 && i <= 11) {
ret |= (!!(rval & BLADERF_XB_DOUT)) << (11 - i);
}
}
volt = (1.8f/1024.0f) * ret;
volt2 = volt * volt;
volt3 = volt2 * volt;
volt4 = volt3 * volt;
*pwr = -503.933f * volt4 +
1409.489f * volt3 -
1487.84f * volt2 +
722.9793f * volt -
114.7529f;
return 0;
}
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