portapack-mayhem/firmware/baseband-tx/rssi.cpp

75 lines
1.7 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 "rssi.hpp"
#include <cstdint>
#include "adc.hpp"
#include "rssi_dma.hpp"
#include "utility.hpp"
#include "hal.h"
using namespace lpc43xx;
#include "hackrf_hal.hpp"
using namespace hackrf::one;
#include "portapack_adc.hpp"
namespace rf {
namespace rssi {
constexpr uint8_t adc1_sel = (1 << portapack::adc1_rssi_input);
const auto adc1_interrupt_mask = flp2(adc1_sel);
constexpr adc::CR adc1_cr {
.sel = adc1_sel,
.clkdiv = 49, /* 400kHz sample rate, 2.5us/sample @ 200MHz PCLK */
.resolution = 9, /* Ten clocks */
.edge = 0,
};
constexpr adc::Config adc1_config {
.cr = adc1_cr,
};
void init() {
adc1.clock_enable();
adc1.interrupts_disable();
adc1.power_up(adc1_config);
adc1.interrupts_enable(adc1_interrupt_mask);
dma::init();
}
void start() {
dma::enable();
adc1.start_burst();
}
void stop() {
dma::disable();
adc1.stop_burst();
}
} /* namespace rssi */
} /* namespace rf */