73 lines
1.5 KiB
C++
73 lines
1.5 KiB
C++
/*
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* Detector.cpp
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*
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* Created on: Apr 5, 2018
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* Author: Andreas Schneider, Johannes Wendel, Jonas Zeunert, Rafael Vinci, Dr. Franca Rupprecht
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*/
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#include "Detector.h"
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#include <iostream>
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#include <math.h>
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namespace Input
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{
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Detector::Detector(GPIOInterface& gpio_interface, std::map<char, InputEvent> events, InputEventNotifier& input_event_notifier) :
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gpio_interface(gpio_interface), input_events(events), is_running(true), input_event_notifier(input_event_notifier)
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{
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detect_thread = std::thread(&Detector::detect, this);
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}
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Detector::~Detector()
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{
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is_running = false;
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detect_thread.join();
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}
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// Cycles over all inputs and enqueues an input event if detected.
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void Detector::detect()
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{
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while(is_running)
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{
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char address;
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if(check_inputs(address))
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{
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try
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{
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InputEvent& event = input_events.at(address);
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input_event_notifier.distribute_event(event);
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}
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catch(std::out_of_range& e)
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{
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// todo log exception!
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}
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}
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}
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}
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bool Detector::check_inputs(char& address)
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{
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for(int row = 0; row < 8; row++)
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{
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gpio_interface.write_input_row(row);
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for(int col = 0; col < 8; col++)
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{
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gpio_interface.write_input_col(col);
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// wait for mux to set address
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std::this_thread::sleep_for(std::chrono::nanoseconds(SLEEP_DURATION_NANO));
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if(gpio_interface.read_input_data())
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{
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address = pow(2, row) + col;
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return true;
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}
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}
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}
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return false;
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}
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}
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