mayhem-firmware/firmware/application/apps/ui_recon.cpp

/*
 * Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
 * Copyright (C) 2018 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_recon.hpp"
#include "ui_fileman.hpp"
#include "ui_recon_settings.hpp"
#include "file.hpp"

// Id's for messages between ReconThread and ReconView
#define MSG_RECON_PAUSE 9999                    // for handle_retune to know that recon thread triggered a pause. f is not important with that message
#define MSG_RECON_SET_MODULATION 10000          // for handle_retune to know that recon thread triggered a modulation change. f is the index of the modulation
#define MSG_RECON_SET_BANDWIDTH 20000           // for handle_retune to know that recon thread triggered a bandwidth change. f is the new bandwidth value index for current modulation
#define MSG_RECON_SET_STEP 30000                // for handle_retune to know that recon thread triggered a bandwidth change. f is the new bandwidth value index for current modulation
#define MSG_RECON_SET_RECEIVER_BANDWIDTH 40000  // for handle_retune to know that recon thread triggered a receiver bandwidth change. f is the new bandwidth in hz
#define MSG_RECON_SET_RECEIVER_SAMPLERATE 50000 // for handle_retune to know that recon thread triggered a receiver samplerate change. f is the new samplerate in hz/s

using namespace portapack;
using portapack::memory::map::backup_ram;

namespace ui {

	ReconThread::ReconThread( freqman_db *database ) : frequency_list_ { *database } {
		thread = chThdCreateFromHeap(NULL, 1024, NORMALPRIO + 10, ReconThread::static_fn, this );
	}

	ReconThread::~ReconThread() {
		stop();
	}

	void ReconThread::stop() {
		if( thread ) {
			chThdTerminate(thread);
			chThdWait(thread);
			thread = nullptr;
		}
	}


	void ReconThread::set_recon(const bool v) {
		_recon = v;
	}

	void ReconThread::set_freq_delete(const bool v) {
		_freq_delete = v;
	}

	void ReconThread::set_stepper( const int64_t v){
		_stepper = v;
	}

	void ReconThread::set_index_stepper( const int64_t v){
		_index_stepper = v;
	}

	void ReconThread::set_lock_duration( const uint32_t v ){
		_lock_duration = v;
	}

	uint32_t ReconThread::get_lock_duration() {
		return _lock_duration ;
	}

	void ReconThread::set_lock_nb_match( const uint32_t v ){
		_lock_nb_match = v;
	}

	uint32_t ReconThread::get_lock_nb_match() {
		return _lock_nb_match ;
	}

	bool ReconThread::is_recon() {
		return _recon;
	}

	void ReconThread::set_freq_lock(const uint32_t v) {
		_freq_lock = v;
	}
	uint32_t ReconThread::is_freq_lock() {
		return _freq_lock;
	}
	int64_t ReconThread::get_current_freq() {
		return freq ;
	}

	void ReconThread::change_recon_direction() {
		_fwd = !_fwd;
		//chThdSleepMilliseconds(300);	//Give some pause after reversing recon direction
	}

	bool ReconThread::get_recon_direction() {
		return _fwd ;
	}
	void ReconThread::set_recon_direction( const bool v) {
		_fwd = v ;
	}

	void ReconThread::set_continuous(const bool v) {
		_continuous = v;
	}

	freqman_index_t ReconThread::get_current_modulation() {
		return last_entry.modulation ;
	}

	freqman_index_t ReconThread::get_current_bandwidth() {
		return last_entry.bandwidth ;
	}


	void ReconThread::set_default_modulation( freqman_index_t index ) {
		def_modulation = index ;
	}

	void ReconThread::set_default_bandwidth( freqman_index_t index ) {
		def_bandwidth = index ;
	}
	void ReconThread::set_default_step( freqman_index_t index ) {
		def_step = index ;
	}
	void ReconThread::set_freq_index( int16_t index ) {
		frequency_index = index ;
	}
	int16_t ReconThread::get_freq_index() {
		return frequency_index ;
	}

	msg_t ReconThread::static_fn( void* arg ) {
		auto obj = static_cast<ReconThread*>(arg);
		obj->run();
		return 0;
	}

	void ReconThread::run()
	{
		//IF THERE IS A FREQUENCY LIST ...
		if (frequency_list_.size() > 0 )
		{
			int64_t minfreq = 0 ;
			int64_t maxfreq = 0 ;
			bool has_looped = false ;
			RetuneMessage message { };

			if( frequency_list_[ 0 ] . step >= 0 )
				step = freqman_entry_get_step_value( frequency_list_[ 0 ] . step );
			else
				step = freqman_entry_get_step_value( def_step );

			switch( frequency_list_[ 0 ] . type ){
				case SINGLE:
					freq = frequency_list_[ 0 ] . frequency_a ;
					break;
				case RANGE:
					minfreq = frequency_list_[ 0 ] . frequency_a ;
					maxfreq = frequency_list_[ 0 ] . frequency_b ;
					if( _fwd )
					{
						freq = minfreq ;
					}
					else
					{
						freq = maxfreq ;
					}
					if( frequency_list_[ 0 ] . step >= 0 )
						step = freqman_entry_get_step_value( frequency_list_[ 0 ] . step );
					break;
				case HAMRADIO:
					minfreq = frequency_list_[ 0 ] . frequency_a ;
					maxfreq = frequency_list_[ 0 ] . frequency_b ;
					if( _fwd )
					{
						freq = minfreq ;
					}
					else
					{
						freq = maxfreq ;
					}
					break;
				default:
					break;
			}
			last_entry . modulation = -1 ;
			last_entry . bandwidth = -1 ;
			last_entry . step = -1 ;
			bool restart_recon = false;					//Flag whenever scanning is restarting after a pause

			while( !chThdShouldTerminate() && frequency_list_.size() > 0 ) 
			{
				if( !_freq_delete )
				{
					has_looped = false ;
					if( last_entry . frequency_a != freq || entry_has_changed )
					{
						last_entry . frequency_a = freq ;
						receiver_model.set_tuning_frequency( freq );	// Retune
						message.freq = freq ;
						message.range = frequency_index ;
						EventDispatcher::send_message(message);
					}
					entry_has_changed = false ;

					// Set modulation if any
					if( last_entry . modulation != frequency_list_[ frequency_index ] . modulation && frequency_list_[ frequency_index ] . modulation >= 0 )
					{
						last_entry . modulation = frequency_list_[ frequency_index ]. modulation;
						message.freq  = last_entry . modulation  ;
						message.range = MSG_RECON_SET_MODULATION ;
						EventDispatcher::send_message(message);
					}
					// Set bandwidth if any
					if( last_entry . bandwidth != frequency_list_[ frequency_index ] . bandwidth && frequency_list_[ frequency_index ] . bandwidth >= 0 )
					{
						last_entry . bandwidth = frequency_list_[ frequency_index ]. bandwidth;
						message.freq  = last_entry . bandwidth  ;
						message.range = MSG_RECON_SET_BANDWIDTH ;
						EventDispatcher::send_message(message);
					}
					if( last_entry . step != frequency_list_[ frequency_index ] . step && frequency_list_[ frequency_index ] . step >= 0 )
					{
						last_entry . step = frequency_list_[ frequency_index ]. step ;
						message.freq  = last_entry . step ;
						message.range = MSG_RECON_SET_STEP ;
						EventDispatcher::send_message(message);
						step = freqman_entry_get_step_value( last_entry . step );
					}

					if( _recon || _stepper != 0 || _index_stepper != 0 )
					{
						if( _freq_lock == 0 || _stepper != 0 || _index_stepper != 0 )  //normal recon (not performing freq_lock)
						{
							if( !restart_recon || _stepper != 0 || _index_stepper != 0 )
							{

								if( _index_stepper == 0 )
								{
									/* we are doing a range */
									if( frequency_list_[ frequency_index ] . type == RANGE ) {
										if ( ( _fwd && _stepper == 0 ) || _stepper > 0 ) {
											//forward
											freq += step ;
											// if bigger than range max
											if (freq > maxfreq ) {
												// when going forward we already know that we can skip a whole range => two values in the list
												frequency_index ++ ;
												entry_has_changed = true ;
												// looping
												if( (uint32_t)frequency_index >= frequency_list_.size() )
												{
													has_looped = true ;
													frequency_index = 0  ;
												}
											}
										}
										else  if( (!_fwd && _stepper == 0 ) || _stepper < 0 ) {
											//reverse
											freq -= step ;
											// if lower than range min
											if (freq < minfreq ) {
												// when back we have to check one step at a time
												frequency_index -- ;
												entry_has_changed = true ;
												// looping
												if( frequency_index < 0 )
												{
													has_looped = true ;
													frequency_index = frequency_list_.size() - 1 ;
												}
											}
										}
									}
									else if( frequency_list_[ frequency_index ] . type == SINGLE ) {
										if ( (_fwd && _stepper == 0 ) || _stepper > 0 ) {					//forward
											frequency_index++;
											entry_has_changed = true ;
											// looping
											if( (uint32_t)frequency_index >= frequency_list_.size() )
											{
												has_looped = true ;
												frequency_index = 0 ;
											}
										}
										else if( (!_fwd && _stepper == 0 ) || _stepper < 0 ) {
											//reverse
											frequency_index--;
											entry_has_changed = true ;
											// if previous if under the list => go back from end
											if( frequency_index < 0 )
											{
												has_looped = true ;
												frequency_index =  frequency_list_.size() - 1 ;
											}
										}
									}
									else if( frequency_list_[ frequency_index ] . type == HAMRADIO )
									{
										if ( (_fwd && _stepper == 0 ) || _stepper > 0 ) {					//forward
											if( ( minfreq != maxfreq ) && freq == minfreq )
											{
												freq = maxfreq ;
											}
											else
											{
												frequency_index++;
												entry_has_changed = true ;
												// looping
												if( (uint32_t)frequency_index >= frequency_list_.size() )
												{
													has_looped = true ;
													frequency_index = 0 ;
												}
											}
										}
										else if( (!_fwd  && _stepper == 0 ) || _stepper < 0 ) {
											//reverse
											if( ( minfreq != maxfreq ) && freq == maxfreq )
											{
												freq = minfreq ;
											}
											else
											{
												frequency_index--;
												entry_has_changed = true ;
												// if previous if under the list => go back from end
												if( frequency_index < 0 )
												{
													has_looped = true ;
													frequency_index =  frequency_list_.size() - 1 ;
												}
											}
										}
									}
									// set index to boundary if !continuous
									if( has_looped && !_continuous )
									{
										entry_has_changed = true ;
										/* prepare values for the next run, when user will resume */
										if( ( _fwd && _stepper == 0 ) || _stepper > 0 )
										{
											frequency_index = 0 ;
										}
										else if( ( !_fwd && _stepper == 0 ) || _stepper < 0 )
										{
											frequency_index = frequency_list_.size() - 1 ;
										}
									}
								}
								else
								{
									if( _index_stepper > 0 )
										frequency_index ++ ;
									if( _index_stepper < 0 )
										frequency_index -- ;
									if( frequency_index < 0 )
										frequency_index = frequency_list_.size() - 1 ;
									if( (unsigned)frequency_index >= frequency_list_.size() )
										frequency_index = 0 ;
									entry_has_changed = true ;
								}

								// reload entry if changed
								if( entry_has_changed ){
									switch( frequency_list_[ frequency_index ] . type ){
										case SINGLE:
											freq = frequency_list_[ frequency_index ] . frequency_a ;
											break;
										case RANGE:
											minfreq = frequency_list_[ frequency_index ] . frequency_a ;
											maxfreq = frequency_list_[ frequency_index ] . frequency_b ;
											if( ( _fwd && _stepper == 0 ) || _stepper > 0 || _index_stepper > 0 )
											{
												freq = minfreq ;
											}
											else if( ( !_fwd && _stepper == 0 ) || _stepper < 0 || _index_stepper < 0 )
											{
												freq = maxfreq ;
											}
											break;
										case HAMRADIO:
											minfreq = frequency_list_[ frequency_index ] . frequency_a ;
											maxfreq = frequency_list_[ frequency_index ] . frequency_b ;
											if(  ( _fwd && _stepper == 0 ) || _stepper > 0 || _index_stepper > 0 )
											{
												freq = minfreq ;
											}
											else if( ( !_fwd && _stepper == 0 ) || _stepper < 0 || _index_stepper < 0 )
											{
												freq = maxfreq ;
											}
											break;
										default:
											break;
									}
								} 
								// send a pause message with the right freq
								if( has_looped && !_continuous )
								{
									// signal pause to handle_retune
									receiver_model.set_tuning_frequency( freq );	// Retune to actual freq
									message.freq = freq ;
									message.range = MSG_RECON_PAUSE ;
									EventDispatcher::send_message(message);
								}
								if( _stepper < 0 ) _stepper ++ ;
								if( _stepper > 0 ) _stepper -- ;
								if( _index_stepper < 0 ) _index_stepper ++ ;
								if( _index_stepper > 0 ) _index_stepper -- ;
							} // if( !restart_recon || _stepper != 0 || _index_stepper != 0 )
							else
							{
								restart_recon = false ;
							}
						} // if( _freq_lock == 0 || _stepper != 0 || _index_stepper != 0 ) 
					} // if( _recon || _stepper != 0 || _index_stepper != 0 )
				} // if( !freq_delete )
				chThdSleepMilliseconds( _lock_duration );	//Needed to (eventually) stabilize the receiver into new freq
			} //while( !chThdShouldTerminate() && frequency_list_.size() > 0 )
		}//if (frequency_list_.size() > 0 )		
	} //ReconThread::run

	bool ReconView::check_sd_card()
	{
		return (sd_card::status() == sd_card::Status::Mounted) ? true : false;
	}

	void ReconView::set_display_freq( int64_t freq )
	{
		big_display.set( "FREQ: "+to_string_short_freq( freq )+" MHz" );
	}

	void ReconView::handle_retune( int64_t freq , uint32_t index ) {

		static int64_t last_freq = 0 ;
		static uint32_t last_index = 999999 ;

		switch( index ) {
			case MSG_RECON_PAUSE:
				user_pause();
				if( update_ranges && current_index < frequency_list.size() )
				{
					button_manual_start.set_text( to_string_short_freq( frequency_list[ current_index ] . frequency_a ) );
					frequency_range.min = frequency_list[ current_index ] . frequency_a ;
					if( frequency_list[ current_index ] . frequency_b != 0 )
					{
						button_manual_end.set_text( to_string_short_freq( frequency_list[ current_index ] . frequency_b ) );
						frequency_range.max = frequency_list[ current_index ] . frequency_b ;
					}
					else
					{
						button_manual_end.set_text( to_string_short_freq( frequency_list[ current_index ] . frequency_a ) );
						frequency_range.max = frequency_list[ current_index ] . frequency_a ;
					}
				}
				return ;
				break ;
			case MSG_RECON_SET_MODULATION :
				receiver_model.disable();
				baseband::shutdown();
				change_mode( freq );
				if ( !recon_thread->is_recon() ) // for some motive, audio output gets stopped.
					audio::output::start();      // so if recon was stopped we resume audio
				receiver_model.enable();
				field_mode.set_selected_index( freq );
				return ;
				break ;
			case MSG_RECON_SET_BANDWIDTH:
				switch( recon_thread->get_current_modulation() )
				{
					case AM_MODULATION:
						receiver_model.set_am_configuration( freq );
						break ;
					case NFM_MODULATION:
						receiver_model.set_nbfm_configuration( freq );
						break ;
					case WFM_MODULATION:
						receiver_model.set_wfm_configuration( freq );
					default:
						break ;
				}
				field_bw.set_selected_index( freq );
				return ;
				break ;
			case MSG_RECON_SET_STEP:
				step_mode.set_selected_index( freq );
				return ;
				break ;
		}

		if( last_index != index )
		{
			last_index = index ;
			current_index = index ;
			if(  frequency_list.size() && index <  frequency_list.size() && frequency_list[ index ] . type == RANGE )
			{
				if( update_ranges )
				{
					button_manual_start.set_text( to_string_short_freq( frequency_list[ index ] . frequency_a ) );
					frequency_range.min = frequency_list[ index ] . frequency_a ;
					if( frequency_list[ index ] . frequency_b != 0 )
					{
						button_manual_end.set_text( to_string_short_freq( frequency_list[ index ] . frequency_b ) );
						frequency_range.max = frequency_list[ index ] . frequency_b ;
					}
					else
					{
						button_manual_end.set_text( to_string_short_freq( frequency_list[ index ] . frequency_a ) );
						frequency_range.max = frequency_list[ index ] . frequency_a ;
					}
				}
			}
			text_cycle.set_text( to_string_dec_uint( index + 1 , 3 ) );
			if(frequency_list[index].description.size() > 0) 
			{
				switch( frequency_list[current_index].type )
				{
					case RANGE:
						desc_cycle.set( "R: " + frequency_list[current_index].description ); //Show new description
						break ;
					case HAMRADIO:
						desc_cycle.set( "H: " + frequency_list[current_index].description ); //Show new description
						break ;
					default:
					case SINGLE:
						desc_cycle.set( "S: " + frequency_list[current_index].description ); //Show new description
						break ;
				}
			}
			else
			{
				desc_cycle.set( "...no description..." ); //Show new description
			}
		}
	
		uint32_t freq_lock = recon_thread->is_freq_lock();
		if( freq_lock == 0 ) {
			//NO FREQ LOCK, ONGOING STANDARD SCANNING
			big_display.set_style(&style_white);
			if( !userpause )
				button_pause.set_text("<PAUSE>");	
			else
				button_pause.set_text("<RESUME>");	
		}
		else if( freq_lock == 1 && recon_lock_nb_match != 1 )
		{
			//STARTING LOCK FREQ
			big_display.set_style(&style_yellow);
			button_pause.set_text("<SKPLCK>");	
		}
		else if( index < 1000 && freq_lock >= recon_thread -> get_lock_nb_match() )
		{
			big_display.set_style( &style_green);
			button_pause.set_text("<UNLOCK>");	

			//FREQ IS STRONG: GREEN and recon will pause when on_statistics_update()
			if( (!scanner_mode) && autosave && last_freq != freq ) {
				File recon_file;
				std::string freq_file_path = "/FREQMAN/"+output_file+".TXT" ;
				std::string frequency_to_add ;

				freqman_entry entry = frequency_list[ current_index ] ;
				entry . frequency_a =  recon_thread->get_current_freq();
				entry . frequency_b =  recon_thread->get_current_freq();
				entry . modulation =  recon_thread->get_current_modulation();
				entry . bandwidth =  recon_thread->get_current_bandwidth();
				entry . type = SINGLE ;

				get_freq_string( entry , frequency_to_add );

				auto result = recon_file.open(freq_file_path);	//First recon if freq is already in txt
				if (!result.is_valid()) {
					char one_char[1];		//Read it char by char
					std::string line;		//and put read line in here
					bool found=false;
					for (size_t pointer=0; pointer < recon_file.size();pointer++) {
						recon_file.seek(pointer);
						recon_file.read(one_char, 1);
						if ((int)one_char[0] > 31) {			//ascii space upwards
							line += one_char[0];				//Add it to the textline
						}
						else if (one_char[0] == '\n') {			//New Line
							if (line.compare(0, frequency_to_add.size(),frequency_to_add) == 0) {
								found=true;
								break;
							}
							line.clear();						//Ready for next textline
						}
					}
					if( !found) {
						result = recon_file.append(freq_file_path); //Second: append if it is not there
						if( !result.is_valid() )
						{
							recon_file.write_line( frequency_to_add );
						}
					}
				}
				else {
					result = recon_file.create( freq_file_path );	//First freq if no output file
					if( !result.is_valid() )
					{
						recon_file.write_line( frequency_to_add );
					}
				}
			}
			last_freq = freq ;
		}
		set_display_freq( freq );	//UPDATE the big Freq after 0, 1 or recon_lock_nb_match (at least, for color synching)
	}


	void ReconView::focus() {
		button_pause.focus();
	}

	ReconView::~ReconView() {

		ReconSetupSaveStrings( "RECON/RECON.CFG" , input_file , output_file , recon_lock_duration , recon_lock_nb_match , squelch , recon_match_mode , wait , recon_lock_duration , field_volume.value() );

		// save app settings
		settings.save("recon", &app_settings);

		audio::output::stop();
		receiver_model.disable();
		baseband::shutdown();
	}

	void ReconView::show_max( bool refresh_display ) {		//show total number of freqs to recon
		static int32_t last_db = 999999 ;
		static int32_t last_nb_match = 999999 ;
		static int32_t last_timer = -1 ;
		if( recon_thread )
		{
			int32_t nb_match = recon_thread->is_freq_lock();
			if( last_db != db )
			{
				last_db = db ;
				refresh_display = true ;
			}
			if( last_nb_match != nb_match )
			{
				last_nb_match = nb_match ;
				refresh_display = true ;
			}
			if( last_timer != timer )
			{
				last_timer = timer ;
				refresh_display = true ;
			}
			if( refresh_display )
			{
				text_max.set( "/" + to_string_dec_uint( frequency_list.size() ) + " " + to_string_dec_int( db ) + " db " + to_string_dec_uint( nb_match ) + "/" + to_string_dec_uint( recon_thread->get_lock_nb_match() ) );
				freq_stats.set( "RSSI: "+to_string_dec_int( rssi.get_min() )+"/"+to_string_dec_int( rssi.get_avg() )+"/"+to_string_dec_int( rssi.get_max() )+" db" );
				text_timer.set( "TIMER: " + to_string_dec_int( timer ) );
			}
		}
	}

	ReconView::ReconView( NavigationView& nav) : nav_ { nav } {

		add_children( {
				&labels,
				&field_lna,
				&field_vga,
				&field_rf_amp,
				&field_volume,
				&field_bw,
				&field_squelch,
				&field_wait,
				&field_lock_wait,
				&button_recon_setup,
				&button_scanner_mode,
				&button_looking_glass,
				&file_name,
				&rssi,
				&text_cycle,
				&text_max,
				&desc_cycle,
				&big_display,
				&freq_stats,
				&text_timer,
				&text_ctcss,
				&button_manual_start,
				&button_manual_end,
				&button_manual_recon,
				&field_mode,
				&step_mode,
				&button_pause,
				&button_audio_app,
				&button_add,
				&button_dir,
				&button_restart,
				&button_mic_app,
				&button_remove
		} );

		// Recon directory
		if( check_sd_card() ) {					 // Check to see if SD Card is mounted
			make_new_directory( u"/RECON" );
			sd_card_mounted = true ;
		}
		def_step = 0 ;
		//HELPER: Pre-setting a manual range, based on stored frequency
		rf::Frequency stored_freq = persistent_memory::tuned_frequency();
		receiver_model.set_tuning_frequency( stored_freq );
		frequency_range.min = stored_freq - 1000000;
		button_manual_start.set_text(to_string_short_freq(frequency_range.min));
		frequency_range.max = stored_freq + 1000000;
		button_manual_end.set_text(to_string_short_freq(frequency_range.max));
		// Loading settings
		autostart = persistent_memory::recon_autostart_recon();
		autosave = persistent_memory::recon_autosave_freqs();
		continuous = persistent_memory::recon_continuous();
		filedelete = persistent_memory::recon_clear_output();
		load_freqs = persistent_memory::recon_load_freqs();
		load_ranges = persistent_memory::recon_load_ranges();
		load_hamradios = persistent_memory::recon_load_hamradios();
		update_ranges = persistent_memory::recon_update_ranges_when_recon();

		field_volume.set_value( volume );
		if( sd_card_mounted )
		{
			//Loading input and output file from settings
			ReconSetupLoadStrings( "RECON/RECON.CFG" , input_file , output_file , recon_lock_duration , recon_lock_nb_match , squelch , recon_match_mode , wait , recon_lock_duration , volume );
			// load auto common app settings
			auto rc = settings.load("recon", &app_settings);
			if(rc == SETTINGS_OK) {
				field_lna.set_value(app_settings.lna);
				field_vga.set_value(app_settings.vga);
				field_rf_amp.set_value(app_settings.rx_amp);
				receiver_model.set_rf_amp(app_settings.rx_amp);
			}
		}
	
		button_manual_start.on_select = [this, &nav](ButtonWithEncoder& button) {
			auto new_view = nav_.push<FrequencyKeypadView>(frequency_range.min);
			new_view->on_changed = [this, &button](rf::Frequency f) {
				frequency_range.min = f;
				button_manual_start.set_text(to_string_short_freq(f));
			};
		};

		button_manual_end.on_select = [this, &nav](ButtonWithEncoder& button) {
			auto new_view = nav.push<FrequencyKeypadView>(frequency_range.max);
			new_view->on_changed = [this, &button](rf::Frequency f) {
				frequency_range.max = f;
				button_manual_end.set_text(to_string_short_freq(f));
			};
		};

		text_cycle.on_select = [this, &nav](ButtonWithEncoder& button) {
			if( frequency_list.size() > 0 )
			{
				auto new_view = nav_.push<FrequencyKeypadView>(current_index);
				new_view->on_changed = [this, &button](rf::Frequency f) {
					f = f / 1000000 ;
					if( f >= 1 && f <= frequency_list.size() )
					{
						recon_thread-> set_index_stepper( f - 1 - current_index );
						recon_thread->set_freq_lock( 0 );
					}
				};
			}
		};

		button_manual_start.on_change = [this]() {
			frequency_range.min = frequency_range.min + button_manual_start.get_encoder_delta() * freqman_entry_get_step_value( def_step );
			if( frequency_range.min < 1 )
			{
				frequency_range.min = 1 ;
			}
			if( frequency_range.min > ( MAX_UFREQ - freqman_entry_get_step_value( def_step ) ) )
			{
				frequency_range.min = MAX_UFREQ - freqman_entry_get_step_value( def_step );
			}
			if( frequency_range.min > (frequency_range.max - freqman_entry_get_step_value( def_step ) ) )
			{
				frequency_range.max = frequency_range.min + freqman_entry_get_step_value( def_step );
				if( frequency_range.max > MAX_UFREQ )
				{
					frequency_range.min = MAX_UFREQ - freqman_entry_get_step_value( def_step );
					frequency_range.max = MAX_UFREQ ;
				}
			}
			button_manual_start.set_text( to_string_short_freq(frequency_range.min) );
			button_manual_end.set_text( to_string_short_freq(frequency_range.max) );
			button_manual_start.set_encoder_delta( 0 );
		};

		button_manual_end.on_change = [this]() {
			frequency_range.max = frequency_range.max + button_manual_end.get_encoder_delta() * freqman_entry_get_step_value( def_step );
			if( frequency_range.max < ( freqman_entry_get_step_value( def_step ) + 1 ) )
			{
				frequency_range.max = ( freqman_entry_get_step_value( def_step ) + 1 );
			}
			if( frequency_range.max > MAX_UFREQ )
			{
				frequency_range.max = MAX_UFREQ ;
			}
			if( frequency_range.max < (frequency_range.min + freqman_entry_get_step_value( def_step ) ) )
			{
				frequency_range.min = frequency_range.max - freqman_entry_get_step_value( def_step );
				if( frequency_range.max < ( freqman_entry_get_step_value( def_step ) + 1 ) )
				{
					frequency_range.min = 1 ;
					frequency_range.max = ( freqman_entry_get_step_value( def_step ) + 1 ) ;
				}
			}
			button_manual_start.set_text( to_string_short_freq(frequency_range.min) );
			button_manual_end.set_text( to_string_short_freq(frequency_range.max) );
			button_manual_end.set_encoder_delta( 0 );
		};

		text_cycle.on_change = [this]() {
			if( frequency_list.size() > 0 )
			{
				if( text_cycle.get_encoder_delta() > 0 )
				{
					fwd = true ;
					recon_thread -> set_recon_direction( fwd );
					button_dir.set_text( "FW>" );
					recon_thread-> set_index_stepper( 1 );
					recon_thread->set_freq_lock( 0 );
				}
				else if( text_cycle.get_encoder_delta() < 0 )
				{
					fwd = false ;
					recon_thread -> set_recon_direction( fwd );
					button_dir.set_text( "<RW" );
					recon_thread-> set_index_stepper( -1 );
					recon_thread->set_freq_lock( 0 );
				}
			}
			text_cycle.set_encoder_delta( 0 );
		};

		button_pause.on_select = [this](ButtonWithEncoder&) {
			if( recon_thread && frequency_list.size() > 0 )
			{
				if( continuous_lock )
				{
					if( fwd )
					{
						recon_thread-> set_stepper( 1 );
					}
					else
					{
						recon_thread-> set_stepper( -1 );
					}
					timer = 0 ;
					recon_resume();
					button_pause.set_text("<PAUSE>");		//Show button for non continuous stop
					continuous_lock = false ;
				}
				else
				{
					if( userpause )
					{
						user_resume();
					}
					else
					{
						user_pause();

						if( update_ranges )
						{
							button_manual_start.set_text( to_string_short_freq( frequency_list[ current_index ] . frequency_a ) );
							frequency_range.min = frequency_list[ current_index ] . frequency_a ;
							if( frequency_list[ current_index ] . frequency_b != 0 )
							{
								button_manual_end.set_text( to_string_short_freq( frequency_list[ current_index ] . frequency_b ) );
								frequency_range.max = frequency_list[ current_index ] . frequency_b ;
							}
							else
							{
								button_manual_end.set_text( to_string_short_freq( frequency_list[ current_index ] . frequency_a ) );
								frequency_range.max = frequency_list[ current_index ] . frequency_a ;
							}
						}
					}
				}
			}
		};

		button_pause.on_change = [this]() {
			if( recon_thread && frequency_list.size() > 0 )
			{
				if( button_pause.get_encoder_delta() > 0 )
				{
					fwd = true ;
					recon_thread -> set_recon_direction( fwd );
					button_dir.set_text( "FW>" );
					recon_thread-> set_stepper( 1 );
					recon_thread->set_freq_lock( 0 );
				}
				else if( button_pause.get_encoder_delta() < 0 )
				{
					fwd = false ;
					recon_thread -> set_recon_direction( fwd );
					button_dir.set_text( "<RW" );
					recon_thread-> set_stepper( -1 );
					recon_thread->set_freq_lock( 0 );
				}
			}
			button_pause.set_encoder_delta( 0 );
		};

		button_audio_app.on_select = [this](Button&) {
			recon_thread->stop();
			nav_.pop();
			nav_.push<AnalogAudioView>();
		};

		button_looking_glass.on_select = [this](Button&) {
			recon_thread->stop();
			nav_.pop();
			nav_.push<GlassView>();
		};


		rssi.set_focusable(true);
		rssi.set_peak( true , 500 );
		rssi.on_select = [this](RSSI&) {
			recon_thread->stop();
			nav_.pop();
			nav_.push<LevelView>();
		};

		button_mic_app.on_select = [this](Button&) {
			recon_thread->stop();
			nav_.pop();
			nav_.push<MicTXView>();
		};

		button_remove.on_select = [this](ButtonWithEncoder&) {
			bool previous_is_recon = false ;
			bool previous_userpause = userpause ;
			if( recon_thread )
			{
				previous_is_recon = recon_thread->is_recon();
				recon_thread->set_recon(false);
				recon_thread->set_freq_delete(true);
				chThdSleepMilliseconds( recon_lock_duration ); // give some time to Thread::Run to pause
			}
			if( scanner_mode )
			{
				if(frequency_list.size() > 0 )
				{
					if( current_index >= frequency_list.size() )
					{
						current_index = frequency_list.size() - 1 ;
					}
					frequency_list.erase( frequency_list.begin()+ current_index );
					if( current_index >= frequency_list.size() )
					{
						current_index = frequency_list.size() - 1 ;
					}
					if( frequency_list.size() > 0 )
					{
						recon_thread->set_freq_index( current_index );
						if(frequency_list[current_index].description.size() > 0)
						{
							switch( frequency_list[current_index].type )
							{
								case RANGE:
									desc_cycle.set( "R: " + frequency_list[current_index].description );
									break ;
								case HAMRADIO:
									desc_cycle.set( "H: " + frequency_list[current_index].description );
									break ;
								default:
								case SINGLE:
									desc_cycle.set( "S: " + frequency_list[current_index].description );
									break ;
							}
						}
						else
						{
							desc_cycle.set( "...no description..." );
							show_max( true );
						}
						text_cycle.set_text( to_string_dec_uint( current_index + 1 , 3 ) );

						File freqman_file;

						std::string freq_file_path = "FREQMAN/" + output_file + ".TXT";

						delete_file( freq_file_path );

						auto result = freqman_file.create( freq_file_path );
						if ( !result.is_valid() )
						{
							for (size_t n = 0; n < frequency_list.size(); n++)
							{
								std::string line ;
								get_freq_string( frequency_list[ n ] , line );
								freqman_file.write_line( line );
							}
						}
					}
				}
			}
			else // RECON MODE / MANUAL, only remove matching from output
			{
				File recon_file;
				File tmp_recon_file;
				std::string freq_file_path = "/FREQMAN/"+output_file+".TXT" ;
				std::string tmp_freq_file_path = "/FREQMAN/"+output_file+"TMP.TXT" ;
				std::string frequency_to_add ;

				freqman_entry entry = frequency_list[ current_index ] ;
				entry . frequency_a =  recon_thread->get_current_freq();
				entry . frequency_b =  recon_thread->get_current_freq();
				entry . modulation =  recon_thread->get_current_modulation();
				entry . bandwidth =  recon_thread->get_current_bandwidth();
				entry . type = SINGLE ;

				get_freq_string( entry , frequency_to_add );

				delete_file( tmp_freq_file_path );
				auto result = tmp_recon_file.create(tmp_freq_file_path);	//First recon if freq is already in txt
																			//
				if (!result.is_valid()) {
					bool found=false;
					result = recon_file.open(freq_file_path);	//First recon if freq is already in txt
					if (!result.is_valid()) {
						char one_char[1];		//Read it char by char
						std::string line;		//and put read line in here
						for (size_t pointer=0; pointer < recon_file.size();pointer++) {
							recon_file.seek(pointer);
							recon_file.read(one_char, 1);
							if ((int)one_char[0] > 31) {			//ascii space upwards
								line += one_char[0];				//Add it to the textline
							}
							else if (one_char[0] == '\n') {			//New Line
								if (line.compare(0, frequency_to_add.size(),frequency_to_add) == 0) {
									found=true;
								}
								else
								{
									tmp_recon_file.write_line( frequency_to_add );
								}
								line.clear();						//Ready for next textline
							}
						}
						if( found)
						{
							delete_file( freq_file_path );
							rename_file( tmp_freq_file_path , freq_file_path );
						}
						else
						{
							delete_file( tmp_freq_file_path );
						}
					}
				}
			}
			if( frequency_list.size() == 0 )
			{
				text_cycle.set_text( " " );
				desc_cycle.set( "no entries in list" ); //Show new description
				show_max( true );								//UPDATE new list size on screen
				delete_file( "FREQMAN/"+output_file+".TXT" );
			}

			if( recon_thread )
			{
				timer = 0 ;

				recon_thread->set_freq_index( current_index );

				RetuneMessage message { };
				receiver_model.set_tuning_frequency( frequency_list[ current_index ] . frequency_a );	// Retune
				message.freq = frequency_list[ current_index ] . frequency_a ;
				message.range = current_index ;
				EventDispatcher::send_message(message);

				chThdSleepMilliseconds( recon_lock_duration ); // give some time to Thread::Run to pause

				if( previous_userpause )
				{
					user_pause();
				}
				else
				{
					user_resume();
				}

				recon_thread->set_freq_delete(false);
				recon_thread->set_recon( previous_is_recon );
			}
		};

		button_remove.on_change = [this]() {
			if( recon_thread && frequency_list.size() > 0 )
			{
				timer = 0 ;
				if( button_remove.get_encoder_delta() > 0 )
				{
					fwd = true ;
					recon_thread -> set_recon_direction( fwd );
					button_dir.set_text( "FW>" );
					recon_thread-> set_stepper( 1 );
					recon_thread->set_freq_lock( 0 );
				}
				else if( button_remove.get_encoder_delta() < 0 )
				{
					fwd = false ;
					recon_thread -> set_recon_direction( fwd );
					button_dir.set_text( "<RW" );
					recon_thread-> set_stepper( -1 );
					recon_thread->set_freq_lock( 0 );
				}
			}
			button_remove.set_encoder_delta( 0 );
		};

		button_manual_recon.on_select = [this](Button&) {
			scanner_mode = false ;
			manual_mode = true ;
			if (!frequency_range.min || !frequency_range.max) {
				nav_.display_modal("Error", "Both START and END freqs\nneed a value");
			} else if (frequency_range.min > frequency_range.max) {
				nav_.display_modal("Error", "END freq\nis lower than START");
			} else {
				audio::output::stop();
				recon_thread->stop();	//STOP SCANNER THREAD

				frequency_list.clear();
				freqman_entry manual_freq_entry ;

				def_step = step_mode.selected_index(); // max range val

				manual_freq_entry . type = RANGE ;
				manual_freq_entry . description =
					"R " + to_string_short_freq(frequency_range.min) + ">"
					+ to_string_short_freq(frequency_range.max) + " S" 	// current Manual range
					+ to_string_short_freq(freqman_entry_get_step_value(def_step)).erase(0,1) ; //euquiq: lame kludge to reduce spacing in step freq
				manual_freq_entry . frequency_a = frequency_range.min ; // min range val
				manual_freq_entry . frequency_b = frequency_range.max ; // max range val
				manual_freq_entry . modulation = -1 ;
				manual_freq_entry . bandwidth = -1 ;
				manual_freq_entry . step = def_step ;

				frequency_list . push_back( manual_freq_entry );

				big_display.set_style(&style_white); //Back to white color
				set_display_freq( frequency_range.min );

				freq_stats.set_style(&style_white);
				freq_stats.set( "0/0/0" );

				show_max(); /* display step information */
				text_cycle.set_text( "1" );
				text_max.set( "/1" );
				button_scanner_mode.set_style( &style_white );
				button_scanner_mode.set_text( "MSEARCH" );
				file_name.set_style( &style_white );
				file_name.set( "MANUAL RANGE RECON" );
				desc_cycle.set_style( &style_white );
				desc_cycle.set( "MANUAL RANGE RECON" );

				start_recon_thread();
				user_resume();
			}
		};

		field_mode.on_change = [this](size_t, OptionsField::value_t v) {
			if( v != -1 )
			{
				receiver_model.disable();
				baseband::shutdown();
				change_mode(v);
				if ( !recon_thread->is_recon() ) 						//for some motive, audio output gets stopped.
					audio::output::start();								//So if recon was stopped we resume audio
				receiver_model.enable();
			}
		};

		button_dir.on_select = [this](Button&) {
			recon_thread->change_recon_direction();
			fwd = recon_thread->get_recon_direction();
			if( fwd )
			{
				button_dir.set_text( "FW>" );
			}
			else
			{
				button_dir.set_text( "<RW" );
			}
			timer = 0 ;
			if ( userpause )				//If user-paused, resume
				user_resume();
		};

		button_restart.on_select = [this](Button&) {
			if( frequency_list.size() > 0 )
			{
				def_step = step_mode.selected_index();	 //Use def_step from manual selector
				frequency_file_load( true );
				if( recon_thread )
				{
					recon_thread->set_lock_duration( recon_lock_duration );
					recon_thread->set_lock_nb_match( recon_lock_nb_match );
				}
				if( fwd )
				{
					button_dir.set_text( "FW>" );
				}
				else
				{
					button_dir.set_text( "<RW" );
				}
				timer = 0 ; 	 		//Will trigger a recon_resume() on_statistics_update, also advancing to next freq.
				show_max();
				user_resume();
			}
			if( scanner_mode )
			{
				file_name.set_style( &style_red );
				button_scanner_mode.set_style( &style_red );
				button_scanner_mode.set_text( "SCANNER" );
			}
			else
			{
				file_name.set_style( &style_blue );
				button_scanner_mode.set_style( &style_blue );
				button_scanner_mode.set_text( "RECON" );
			}
		};

		button_add.on_select = [this](ButtonWithEncoder&) {  //frequency_list[current_index]
			if( !scanner_mode)
			{
				if( recon_thread && frequency_list.size() && frequency_list.size() && current_index < frequency_list.size() )
				{
					int64_t freq = recon_thread->get_current_freq();
					bool found=false;
					File recon_file;
					std::string freq_file_path = "/FREQMAN/"+output_file+".TXT" ;
					std::string frequency_to_add ;

					freqman_entry entry = frequency_list[ current_index ] ;
					entry . frequency_a =  recon_thread->get_current_freq();
					entry . frequency_b =  recon_thread->get_current_freq();
					entry . modulation =  recon_thread->get_current_modulation();
					entry . bandwidth =  recon_thread->get_current_bandwidth();
					entry . type = SINGLE ;

					get_freq_string( entry , frequency_to_add );

					auto result = recon_file.open(freq_file_path);	//First recon if freq is already in txt
					if (!result.is_valid()) {
						char one_char[1];		//Read it char by char
						std::string line;		//and put read line in here
						for (size_t pointer=0; pointer < recon_file.size();pointer++) {
							recon_file.seek(pointer);
							recon_file.read(one_char, 1);
							if ((int)one_char[0] > 31) {			//ascii space upwards
								line += one_char[0];				//Add it to the textline
							}
							else if (one_char[0] == '\n') {			//New Line
								if (line.compare(0, frequency_to_add.size(),frequency_to_add) == 0) {
									found=true;
									break;
								}
								line.clear();						//Ready for next textline
							}
						}
						if( !found) {
							result = recon_file.append(freq_file_path); //Second: append if it is not there
							if( !result.is_valid() )
							{
								recon_file.write_line( frequency_to_add );
							}
						}
						if (found) {
							nav_.display_modal("Error", "Frequency already exists");
							set_display_freq( freq );
						}
					}
					else
					{
						auto result = recon_file.create(freq_file_path); //third: create if it is not there
						if( !result.is_valid() )
						{
							recon_file.write_line( frequency_to_add );
						}
					}
				}
			}
		};

		button_add.on_change = [this]() {
			if( recon_thread && frequency_list.size() > 0 )
			{
				timer = 0 ;
				if( button_add.get_encoder_delta() > 0 )
				{
					fwd = true ;
					recon_thread -> set_recon_direction( fwd );
					button_dir.set_text( "FW>" );
					recon_thread-> set_stepper( 1 );
					recon_thread->set_freq_lock( 0 );
				}
				else if( button_add.get_encoder_delta() < 0 )
				{
					fwd = false ;
					recon_thread -> set_recon_direction( fwd );
					button_dir.set_text( "<RW" );
					recon_thread-> set_stepper( -1 );
					recon_thread->set_freq_lock( 0 );
				}
			}
			button_add.set_encoder_delta( 0 );
		};


		button_scanner_mode.on_select = [this,&nav](Button&) {
			manual_mode = false ;
			if( scanner_mode )
			{
				scanner_mode = false ;
				button_scanner_mode.set_style( &style_blue );
				button_scanner_mode.set_text( "RECON" );
			}
			else
			{
				scanner_mode = true ;
				button_scanner_mode.set_style( &style_red );
				button_scanner_mode.set_text( "SCANNER" );
			}
			frequency_file_load( true );
			if( recon_thread )
			{
				recon_thread->set_lock_duration( recon_lock_duration );
				recon_thread->set_lock_nb_match( recon_lock_nb_match );
				recon_thread->set_continuous( continuous );
				recon_thread->set_recon_direction( fwd );
			}
			if( autostart )
			{
				user_resume();
			}
			else
			{
				user_pause();
			}
		};

		button_recon_setup.on_select = [this,&nav](Button&) {

			ReconSetupSaveStrings( "RECON/RECON.CFG" , input_file , output_file , recon_lock_duration , recon_lock_nb_match , squelch , recon_match_mode , wait , recon_lock_duration , field_volume.value() );

			if( frequency_list.size() != 0 )
				user_pause();

			auto open_view = nav.push<ReconSetupView>(input_file,output_file,recon_lock_duration,recon_lock_nb_match,recon_match_mode);
			open_view -> on_changed = [this](std::vector<std::string> result) {
				input_file = result[0];
				output_file = result[1];
				recon_lock_duration = strtol( result[2].c_str() , nullptr , 10 );
				recon_lock_nb_match = strtol( result[3].c_str() , nullptr , 10 );
				recon_match_mode	= strtol( result[4].c_str() , nullptr , 10 );

				ReconSetupSaveStrings( "RECON/RECON.CFG" , input_file , output_file , recon_lock_duration , recon_lock_nb_match , squelch , recon_match_mode , wait , recon_lock_duration , field_volume.value() );

				autosave = persistent_memory::recon_autosave_freqs();
				autostart = persistent_memory::recon_autostart_recon();
				continuous = persistent_memory::recon_continuous();
				filedelete = persistent_memory::recon_clear_output();
				load_freqs = persistent_memory::recon_load_freqs();
				load_ranges = persistent_memory::recon_load_ranges();
				load_hamradios = persistent_memory::recon_load_hamradios();

				update_ranges = persistent_memory::recon_update_ranges_when_recon();

				frequency_file_load( true );
				if( recon_thread )
				{
					recon_thread->set_lock_duration( recon_lock_duration );
					recon_thread->set_lock_nb_match( recon_lock_nb_match );
					recon_thread->set_continuous( continuous );
					recon_thread->set_recon_direction( fwd );
				}
				if( autostart )
				{
					user_resume();
				}
				else
				{
					user_pause();
				}

				if( update_ranges )
				{
					button_manual_start.set_text( to_string_short_freq( frequency_list[ current_index ] . frequency_a ) );
					frequency_range.min = frequency_list[ current_index ] . frequency_a ;
					if( frequency_list[ current_index ] . frequency_b != 0 )
					{
						button_manual_end.set_text( to_string_short_freq( frequency_list[ current_index ] . frequency_b ) );
						frequency_range.max = frequency_list[ current_index ] . frequency_b ;
					}
					else
					{
						button_manual_end.set_text( to_string_short_freq( frequency_list[ current_index ] . frequency_a ) );
						frequency_range.max = frequency_list[ current_index ] . frequency_a ;
					}
				}

				lock_wait = ( 4 * ( recon_lock_duration * recon_lock_nb_match ) ) / 100 ;
				lock_wait = lock_wait * 100 ; // poor man's rounding
				if( lock_wait < 400 )
					lock_wait = 400 ;
				field_lock_wait.set_value( lock_wait );
				show_max();
				return ;
			};

			if( userpause != true )
			{
				timer = 0 ;
				user_resume();
			}
			else
			{
				RetuneMessage message { };
				message.freq = recon_thread->get_current_freq();
				message.range = current_index ;
				EventDispatcher::send_message(message);
			}
		};

		field_wait.on_change = [this](int32_t v)
		{
			wait = v ;
			if( wait == 0 )
			{
				field_wait.set_style( &style_blue );
			}
			else if( wait >= 500 )
			{
				field_wait.set_style(&style_white);
			}
			else if( wait > -500 && wait < 500 )
			{
				field_wait.set_style( &style_red );
			}
			else if( wait <= -500 )
			{
				field_wait.set_style( &style_green );
			}
		};

		field_lock_wait.on_change = [this](int32_t v)
		{
			lock_wait = v ;

			uint32_t lock_white = ( 4 * ( recon_lock_duration * recon_lock_nb_match ) ) / 100 ;
			lock_white = lock_white * 100 ;
			if( lock_white < 400 )
				lock_white = 400 ;

			uint32_t lock_yellow = 300 ;

			if( lock_wait >= lock_white )
			{
				field_lock_wait.set_style( &style_white );
			}
			else if( lock_wait >= lock_yellow )
			{
				field_lock_wait.set_style( &style_yellow);
			}
			else
			{
				field_lock_wait.set_style(&style_red);
			}
		};
		
		field_squelch.on_change = [this](int32_t v) {
			squelch = v ;
		};

		field_volume.on_change = [this](int32_t v) { 
			this->on_headphone_volume_changed(v);	
		};

		//PRE-CONFIGURATION:
		change_mode(AM_MODULATION);	//Start on AM
		field_mode.set_by_value(AM_MODULATION);	//Reflect the mode into the manual selector
		button_scanner_mode.set_style( &style_blue );
		button_scanner_mode.set_text( "RECON" );
		file_name.set( "=>" );
		field_squelch.set_value( squelch );

		field_wait.set_value(wait);
		lock_wait = ( 4 * ( recon_lock_duration * recon_lock_nb_match ) );
		lock_wait = lock_wait / 100 ; lock_wait = lock_wait * 100 ; // poor man's rounding
		if( lock_wait < 400 )
			lock_wait = 400 ;
		field_lock_wait.set_value(lock_wait);
		field_volume.set_value((receiver_model.headphone_volume() - audio::headphone::volume_range().max).decibel() + 99);

		//FILL STEP OPTIONS
		freqman_set_modulation_option( field_mode );
		freqman_set_step_option( step_mode );
		
		receiver_model.set_tuning_frequency( portapack::persistent_memory::tuned_frequency() );	// Retune

		if( filedelete )
		{
			delete_file( "FREQMAN/"+output_file+".TXT" );
		}

		frequency_file_load( false ); /* do not stop all at start */
		if( recon_thread )
		{
			recon_thread->set_lock_duration( recon_lock_duration );
			recon_thread->set_lock_nb_match( recon_lock_nb_match );
			if( update_ranges && frequency_list.size() > 0 )
			{
				button_manual_start.set_text( to_string_short_freq( frequency_list[ current_index ] . frequency_a ) );
				frequency_range.min = frequency_list[ current_index ] . frequency_a ;
				if( frequency_list[ current_index ] . frequency_b != 0 )
				{
					button_manual_end.set_text( to_string_short_freq( frequency_list[ current_index ] . frequency_b ) );
					frequency_range.max = frequency_list[ current_index ] . frequency_b ;
				}
				else
				{
					button_manual_end.set_text( to_string_short_freq( frequency_list[ current_index ] . frequency_a ) );
					frequency_range.max = frequency_list[ current_index ] . frequency_a ;
				}
			}
			if( autostart )
			{
				timer = 0 ; 	 		//Will trigger a recon_resume() on_statistics_update, also advancing to next freq.
				user_resume();
			}
			else
			{
				user_pause();
			}
			show_max();
		}
	}


	void ReconView::frequency_file_load( bool stop_all_before) {

		// stop everything running now if required
		if (stop_all_before) {
			recon_thread->stop();
		}
		audio::output::stop();

		def_step = step_mode.selected_index();		// use def_step from manual selector
		frequency_list.clear();					 // clear the existing frequency list (expected behavior)
		std::string file_input = input_file ;	   // default recon mode
		if( scanner_mode )
		{
			file_input = output_file ;
			file_name.set_style( &style_red );
			button_scanner_mode.set_style( &style_red );
			button_scanner_mode.set_text( "SCANNER" );
		}
		else
		{
			file_name.set_style( &style_blue );
			button_scanner_mode.set_style( &style_blue );
			button_scanner_mode.set_text( "RECON" );
		}
		file_name.set_style( &style_white );
		desc_cycle.set_style( &style_white );
		if( !load_freqman_file_ex( file_input , frequency_list, load_freqs, load_ranges, load_hamradios ) )
		{	
			file_name.set_style( &style_red );
			desc_cycle.set_style( &style_red );
			desc_cycle.set(" NO " + file_input + ".TXT FILE ..." );
			file_name.set( "=> NO DATA" );
		}
		else
		{
			file_name.set( "=> "+file_input );
			if( frequency_list.size() == 0 )
			{
				file_name.set_style( &style_red );
				desc_cycle.set_style( &style_red );
				desc_cycle.set("/0 no entries in list" );
				file_name.set( "BadOrEmpty "+file_input );
			}
			else
			{
				if( frequency_list.size() > FREQMAN_MAX_PER_FILE )
				{
					file_name.set_style( &style_yellow );
					desc_cycle.set_style( &style_yellow );
				}
			}
		}
		step_mode.set_selected_index(def_step); //Impose the default step into the manual step selector
		start_recon_thread();
		std::string description = "...no description..." ;
		if( frequency_list.size() != 0 )
		{
			current_index = 0 ;
			recon_thread-> set_freq_index( 0 );
			switch( frequency_list[current_index].type )
			{
				case RANGE:
					description = "R: " + frequency_list[current_index].description ;
					break ;
				case HAMRADIO:
					description = "H: " + frequency_list[current_index].description ; 
					break ;
				default:
				case SINGLE:
					description = "S: " + frequency_list[current_index].description ;
					break ;
			}
			text_cycle.set_text( to_string_dec_uint( current_index + 1 , 3 ) );
		}
		else
		{
			text_cycle.set_text( " " );
		}
		desc_cycle.set( description );
	}

	void ReconView::on_statistics_update(const ChannelStatistics& statistics) {

		int32_t actual_db = statistics.max_db ;
		bool update_stats = false ;
		int32_t freq_lock = recon_thread->is_freq_lock();
		int32_t max_lock = recon_thread -> get_lock_nb_match();

		// 0 recon , 1 locking , 2 locked
		static int32_t status = -1 ;

		if( actual_db != 0 && db != actual_db )
		{
			db = actual_db ;
			update_stats = true ;
		}

		if( !userpause )
		{
			if( !timer )
			{
				if( status != 0 )
				{
					status = 0 ;
					update_stats = true ;
					continuous_lock = false ;
					recon_thread->set_freq_lock( 0 ); //in lock period, still analyzing the signal
					recon_resume();  // RESUME!
					big_display.set_style(&style_white);
				}
			}
			if( freq_lock >= max_lock ) // LOCKED
			{
				if( status != 2 )
				{
					status = 2 ;
					update_stats = true ;

					if( wait != 0 )
					{
						audio::output::start();
						this->on_headphone_volume_changed( (receiver_model.headphone_volume() - audio::headphone::volume_range().max).decibel() + 99 );
					}
					if( wait >= 0 )
					{
						timer = wait ;
					}
					//Inform freq (for coloring purposes also!)
					RetuneMessage message { };
					message.freq = recon_thread->get_current_freq() ;
					message.range = current_index ;
					EventDispatcher::send_message(message);
				}
				if( wait < 0 )
				{
					if( actual_db > squelch ) //MATCHING LEVEL IN STAY X AFTER LAST ACTIVITY
					{
						timer = abs( wait );
					}
				}
			}
			else // freq_lock < max_lock , LOCKING
			{
				if( actual_db > squelch ) //MATCHING LEVEL
				{
					if( status != 1 )
					{
						status = 1 ;
						continuous_lock = true ;
						if( wait != 0 )
						{
							audio::output::stop();
						}
						timer = lock_wait ;
						//Inform freq (for coloring purposes also!)
						RetuneMessage message { };
						message.freq = recon_thread->get_current_freq() ;
						current_index = recon_thread->get_freq_index() ;
						message.range = current_index ;
						EventDispatcher::send_message(message);
					}
					freq_lock ++ ;
					recon_thread->set_freq_lock( freq_lock ); //in lock period, still analyzing the signal
					update_stats = true ;
				}
				else
				{
					// continuous, direct cut it if not consecutive match
					if( recon_match_mode == 0 )
					{
						timer = 0 ;
						update_stats = true ;
					}
				}
			}
		}
		else
		{
			if( actual_db > squelch )
			{
				if( status != 2 ) //MATCHING LEVEL
				{
					status = 2 ;
					big_display.set_style(&style_yellow);
					set_display_freq( recon_thread->get_current_freq() );
				}
			}
			else
			{
				if( status != 0 )
				{
					status = 0 ;
					big_display.set_style(&style_white);
					set_display_freq( recon_thread->get_current_freq() );
				}

			}
		}
		if( update_stats )
		{
			show_max();
		}

		if( timer > 0 )
			show_max();

		timer -= 50 ;
		if( timer < 0 )
		{
			timer = 0 ;
			show_max();
		}
	} /* on_statistic_updates */

	void ReconView::recon_pause() {
		if (recon_thread->is_recon()) 
		{
			audio::output::start();
			this->on_headphone_volume_changed( (receiver_model.headphone_volume() - audio::headphone::volume_range().max).decibel() + 99 );
			recon_thread->set_freq_lock( 0 ); //in lock period, still analyzing the signal
			recon_thread ->set_recon(false); // WE STOP SCANNING
		}
	}


	void ReconView::recon_resume() {
		audio::output::stop();
		if( !recon_thread->is_recon() )
			recon_thread->set_recon(true);	   // RESUME!
		big_display.set_style(&style_white); //Back to grey color
	}

	void ReconView::user_pause() {
		timer = 0 ; 	 				// Will trigger a recon_resume() on_statistics_update, also advancing to next freq.
										//button_pause.set_text("<RESUME>");	//PAUSED, show resume
		userpause=true;
		continuous_lock=false;
		recon_pause();
	}

	void ReconView::user_resume() {
		timer = 0 ; 	 				// Will trigger a recon_resume() on_statistics_update, also advancing to next freq.
										//button_pause.set_text("<PAUSE>");		//Show button for pause
		userpause=false;				// Resume recon
		continuous_lock=false;
		recon_resume();
	}

	void ReconView::on_headphone_volume_changed(int32_t v) {
		const auto new_volume = volume_t::decibel(v - 99) + audio::headphone::volume_range().max;
		receiver_model.set_headphone_volume(new_volume);
	}

	size_t ReconView::change_mode( freqman_index_t new_mod ) { //Before this, do a recon_thread->stop();  After this do a start_recon_thread()

		field_bw.on_change = [this](size_t n, OptionsField::value_t) { (void)n;	};

		switch( new_mod ) {
			case AM_MODULATION:
				freqman_set_bandwidth_option( new_mod , field_bw );
				//bw DSB (0) default
				field_bw.set_selected_index(0);
				baseband::run_image(portapack::spi_flash::image_tag_am_audio);
				receiver_model.set_modulation(ReceiverModel::Mode::AMAudio);
				receiver_model.set_am_configuration(field_bw.selected_index());
				field_bw.on_change = [this](size_t n, OptionsField::value_t) { receiver_model.set_am_configuration(n);	};
				receiver_model.set_sampling_rate(3072000);	receiver_model.set_baseband_bandwidth(1750000);
				text_ctcss.set("             ");
				break;
			case NFM_MODULATION:
				freqman_set_bandwidth_option( new_mod , field_bw );
				//bw 16k (2) default
				field_bw.set_selected_index(2);
				baseband::run_image(portapack::spi_flash::image_tag_nfm_audio);
				receiver_model.set_modulation(ReceiverModel::Mode::NarrowbandFMAudio);
				receiver_model.set_nbfm_configuration(field_bw.selected_index());
				field_bw.on_change = [this](size_t n, OptionsField::value_t) { 	receiver_model.set_nbfm_configuration(n); };
				receiver_model.set_sampling_rate(3072000);	receiver_model.set_baseband_bandwidth(1750000);
				break;
			case WFM_MODULATION:
				freqman_set_bandwidth_option( new_mod , field_bw );
				//bw 200k (0) only/default
				field_bw.set_selected_index(0);
				baseband::run_image(portapack::spi_flash::image_tag_wfm_audio);
				receiver_model.set_modulation(ReceiverModel::Mode::WidebandFMAudio);
				receiver_model.set_wfm_configuration(field_bw.selected_index());
				field_bw.on_change = [this](size_t n, OptionsField::value_t) {	receiver_model.set_wfm_configuration(n); };
				receiver_model.set_sampling_rate(3072000);	receiver_model.set_baseband_bandwidth(1750000);
				text_ctcss.set("             ");
				break;
			default:
				break;
		}
		return freqman_entry_get_step_value( def_step );
	}

	void ReconView::start_recon_thread() {
		receiver_model.enable();
		receiver_model.set_squelch_level(0);
		recon_thread = std::make_unique<ReconThread>(&frequency_list);
		recon_thread->set_continuous( continuous );
		recon_thread->set_lock_duration( recon_lock_duration );
		recon_thread->set_lock_nb_match( recon_lock_nb_match );
		recon_thread->set_recon_direction( fwd );
	}

	void ReconView::handle_coded_squelch(const uint32_t value) {
		static int32_t last_idx = -1 ;

		float diff, min_diff = value;
		size_t min_idx { 0 };
		size_t c;

		if( field_mode.selected_index() != NFM_MODULATION )
		{
			text_ctcss.set("             ");
			return ;
		}

		// Find nearest match
		for (c = 0; c < tone_keys.size(); c++) {
			diff = abs(((float)value / 100.0) - tone_keys[c].second);
			if (diff < min_diff) {
				min_idx = c;
				min_diff = diff;
			}
		}

		// Arbitrary confidence threshold
		if( last_idx < 0 || (unsigned)last_idx != min_idx )
		{
			last_idx = min_idx ;
			if (min_diff < 40)
				text_ctcss.set("T: "+tone_keys[min_idx].first);
			else
				text_ctcss.set("             ");
		}
	}
} /* namespace ui */