portapack-mayhem/firmware/application/ui_whipcalc.cpp

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/*
* Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
* Copyright (C) 2016 Furrtek
*
* 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 "ui_whipcalc.hpp"
#include "ch.h"
#include "portapack.hpp"
#include "event_m0.hpp"
#include <cstring>
using namespace portapack;
namespace ui {
void WhipCalcView::focus() {
field_frequency.focus();
}
void WhipCalcView::update_result() {
double length, divider;
divider = ((double)options_type.selected_index_value() / 8.0);
// Metric
length = (speed_of_light_mps / (double)field_frequency.value()) * divider;
auto m = to_string_dec_int((int)length, 2);
auto cm = to_string_dec_int(int(length * 100.0) % 100, 2);
auto mm = to_string_dec_int(int(length * 1000.0) % 10, 1);
text_result_metric.set(m + "m " + cm + "." + mm + "cm");
// ANT500 elements for crude adjustment
length /= 0.14;
if (int(length) <= 4) {
auto elements = to_string_dec_int((int)length, 1);
text_result_ant500.set(elements + " " + frac_str[((int(length * 10.0) % 10) + 1) / 3] + "ANT500 elements");
} else {
text_result_ant500.set("-");
}
// Imperial
length = (speed_of_light_fps / (double)field_frequency.value()) * divider;
auto feet = to_string_dec_int((int)length, 3);
auto inch = to_string_dec_int(int(length * 10.0) % 12, 2);
auto inch_c = to_string_dec_int(int(length * 100.0) % 10, 1);
text_result_imperial.set(feet + "ft " + inch + "." + inch_c + "in");
}
WhipCalcView::WhipCalcView(
NavigationView& nav
) {
add_children({
&labels,
&field_frequency,
&options_type,
&text_result_metric,
&text_result_imperial,
&text_result_ant500,
&button_exit
});
options_type.on_change = [this](size_t, OptionsField::value_t) {
this->update_result();
};
options_type.set_selected_index(2); // Quarter wave
field_frequency.set_value(transmitter_model.tuning_frequency());
field_frequency.set_step(500000); // 500kHz step
field_frequency.on_change = [this](rf::Frequency) {
this->update_result();
};
field_frequency.on_edit = [this, &nav]() {
// TODO: Provide separate modal method/scheme?
auto new_view = nav.push<FrequencyKeypadView>(transmitter_model.tuning_frequency());
new_view->on_changed = [this](rf::Frequency f) {
this->update_result();
this->field_frequency.set_value(f);
};
};
button_exit.on_select = [this, &nav](Button&) {
nav.pop();
};
update_result();
}
}