www.pudn.com > headset.rar > checkButtons.c

#include "demohs.h" 
 
#include  
 
 
 
 
 
/* 
    handleButtonChange 
 
    Called by the button library when the buttons may have changed. 
*/ 
 
ButtonChangeResult handleButtonChange(uint16 pressed, uint16 changed) 
{ 
#ifdef DEV_BOARD_HS     
    uint16 tmp_set = pressed & changed; 
    if (tmp_set & PIO_DEEP_SLEEP_NOW) 
    {         
        if (!hsState.turnOffHs) 
        { 
            /*  
                If on/off button pressed go into deep sleep and  
                ignore the other buttons  
            */ 
            enterDeepSleepAsap(); 
            return ButtonChangeStop; 
        } 
        else 
        { 
            /* If we're already in deep sleep then wake everything up */ 
            enterActiveStateAsap(); 
        } 
    } 
    else 
    { 
        /* Only allow wake up if on/ off button pressed */ 
        if (hsState.turnOffHs) 
            return ButtonChangeStop; 
    } 
#endif 
 
    /* Check for chords first */ 
    if((pressed & RESET_CONDITION) == RESET_CONDITION && 
        (changed &RESET_CONDITION) != 0) 
    { 
        if (hsState.connectState != connected) 
        { 
            resetReq();             
        } 
    } 
 
    if((pressed & MUTE_CONDITION) == MUTE_CONDITION &&  
       (changed & MUTE_CONDITION) != 0) 
    { 
        if (hsState.connectState == connected) 
        { 
            /* Chord is down, and wasn't before */ 
            muteRequest(); 
        } 
    } 
    else 
    { 
        uint16 new_set = pressed & changed; 
        /* Try single buttons */ 
        if (new_set & PIO_TALK) 
        { 
            /* Process the talk button press */ 
            talkButton(); 
        } 
        else if(new_set & PIO_VOLUME_DOWN) 
        { 
            /* Process the volume DOWN button press */ 
            onVolumeDown(); 
        }         
        else if(new_set & PIO_VOLUME_UP) 
        { 
            /* Process the volume UP button press */ 
            onVolumeUp(); 
        } 
    } 
    return ButtonChangeContinue; 
}