portapack-mayhem/firmware/application/hw/touch_adc.cpp
furrtek 3193c6ee99 Added bias-T status icon
Merged radio settings in one screen
2018-01-07 23:13:08 +00:00

87 lines
2.2 KiB
C++

/*
* Copyright (C) 2015 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 "touch.hpp"
#include <cstdint>
#include "adc.hpp"
#include "utility.hpp"
#include "hal.h"
using namespace lpc43xx;
#include "hackrf_hal.hpp"
using namespace hackrf::one;
#include "portapack_adc.hpp"
#include "portapack_shared_memory.hpp"
namespace touch {
namespace adc {
constexpr uint8_t adc0_sel =
(1 << portapack::adc0_touch_xp_input)
| (1 << portapack::adc0_touch_xn_input)
| (1 << portapack::adc0_touch_yp_input)
| (1 << portapack::adc0_touch_yn_input)
;
const auto adc0_interrupt_mask = flp2(adc0_sel);
constexpr lpc43xx::adc::CR adc0_cr {
.sel = adc0_sel,
.clkdiv = 49, /* 400kHz sample rate, 2.5us/sample @ 200MHz PCLK */
.resolution = 9, /* Ten clocks */
.edge = 0,
};
constexpr lpc43xx::adc::Config adc0_config {
.cr = adc0_cr,
};
void init() {
adc0::clock_enable();
adc0::interrupts_disable();
adc0::power_up(adc0_config);
adc0::interrupts_enable(adc0_interrupt_mask);
}
void start() {
adc0::start_burst();
}
// static constexpr bool monitor_overruns_and_not_dones = false;
Samples get() {
const auto xp_reg = LPC_ADC0->DR[portapack::adc0_touch_xp_input];
const auto xn_reg = LPC_ADC0->DR[portapack::adc0_touch_xn_input];
const auto yp_reg = LPC_ADC0->DR[portapack::adc0_touch_yp_input];
const auto yn_reg = LPC_ADC0->DR[portapack::adc0_touch_yn_input];
return {
(xp_reg >> 6) & 0x3ff,
(xn_reg >> 6) & 0x3ff,
(yp_reg >> 6) & 0x3ff,
(yn_reg >> 6) & 0x3ff,
};
}
} /* namespace adc */
} /* namespace touch */