PauseButton.cpp

00001 #include "libs/Kernel.h"
00002 #include "PauseButton.h"
00003 #include "libs/nuts_bolts.h"
00004 #include "libs/utils.h"
00005 #include <string>
00006 using namespace std;
00007 
00008 PauseButton::PauseButton(){}
00009 
00010 void PauseButton::on_module_loaded(){
00011     this->button_state = true;
00012     this->play_state   = true;
00013     this->register_for_event(ON_PLAY);
00014     this->register_for_event(ON_PAUSE);
00015 
00016     this->button     =  this->kernel->config->value( pause_button_pin_checksum )->by_default("2.12")->as_pin()->as_input();
00017     this->led        =  this->kernel->config->value( pause_led_pin_checksum    )->by_default("4.28")->as_pin()->as_output();
00018 
00019     this->kernel->slow_ticker->attach( 100, this, &PauseButton::button_tick );
00020 }
00021 
00022 //TODO: Make this use InterruptIn
00023 //Check the state of the button and act accordingly
00024 uint32_t PauseButton::button_tick(uint32_t dummy){
00025     // If button changed 
00026     if(this->button_state != this->button->get()){ 
00027         this->button_state = this->button->get();
00028         // If button pressed 
00029         if( this->button_state ){
00030             if( this->play_state ){
00031                 this->play_state = false;
00032                 this->kernel->pauser->take(); 
00033             }else{
00034                 this->play_state = true;
00035                 this->kernel->pauser->release(); 
00036             } 
00037         } 
00038     }
00039 }
00040 
00041 void PauseButton::on_play( void* argument ){
00042     this->led->set(0);
00043 }
00044 
00045 void PauseButton::on_pause( void* argument ){
00046     this->led->set(1);
00047 }
00048