portapack-mayhem/firmware/application/baseband_cpld.cpp
2015-07-08 08:39:24 -07:00

52 lines
1.5 KiB
C++

/*
* Copyright (C) 2014 Jared Boone, ShareBrained Technology, Inc.
*
* This file is part of PortaPack.
*
* 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, 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; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street,
* Boston, MA 02110-1301, USA.
*/
#include "baseband_cpld.hpp"
#include "hackrf_gpio.hpp"
using namespace hackrf::one;
namespace baseband {
void CPLD::init() {
set_decimation_by(1);
gpios_baseband_decimation[0].output();
gpios_baseband_decimation[1].output();
gpios_baseband_decimation[2].output();
set_q_invert(false);
gpio_baseband_q_invert.output();
}
void CPLD::set_decimation_by(const uint8_t n) {
const uint8_t skip_n = n - 1;
const uint8_t value = skip_n ^ 7;
gpios_baseband_decimation[0].write(value & 1);
gpios_baseband_decimation[1].write(value & 2);
gpios_baseband_decimation[2].write(value & 4);
}
void CPLD::set_q_invert(const bool invert) {
gpio_baseband_q_invert.write(invert);
}
}