#include "key.h" 
#include "stm32f10x_gpio.h"
#include "ctrl.h"
//#include "CTRL.H"
//#include "dc2ac.h"
//#include "task.h" 
unsigned char gcOldKey = 0;
unsigned int gcKeyFilter = 0;
unsigned char gcKeyStack[MAX_KEY_STACK] = {"\0"};
unsigned char gcKeySavePtr= 0;
unsigned char gcKetGetPtr = 0;
signed   char gcBLTimer               = -1;             
unsigned char gcKey = 0;                                 //键盘键值                                            

void TaskScanKey(void)
{        
        unsigned char Key ;     //按键输入     //去掉LOCK,上下到位  半降全降信号              
        Key = KEY&KEY_MAP;
        if(Key!=0x0)
        {                                          
            if(Key!=gcOldKey)                //digit filter
            {
                gcOldKey=Key;
                gcKeyFilter=0;
                //Beep(1,100); 
            }
            else
            {                                 //长按不放的情况
                gcKeyFilter++; 
                if(gcKeyFilter>5000/20)  //长按2.5S 上升就变成了调试按键
                {
                        gcKeyFilter=0;       
                        if(Key==KEY_UP)                        //长按2.5S 上升就变成了调试按键                        
                            gcKeyStack[gcKeySavePtr]=KEY_DEBUG; 
                        else if(Key==KEY_STOP)    //长按2.5S 停止就变成了中停2按键
                            gcKeyStack[gcKeySavePtr]=KEY_STOP2;
                        gcKeySavePtr=(gcKeySavePtr+1)%MAX_KEY_STACK;  
                        Beep(1,50);           //beep 10ms         
                } 
                if( gcKeyFilter>MAX_KEY_FILTER)        //save key to stack
                {                                                                                                
                  //if((Key&KEY_LOCK)!=KEY_LOCK)       
                    //键值过滤  锁定键不允许连击
                    if(((Key&KEY_STOPWARN)==KEY_STOPWARN)
                    ||  ( (Key&KEY_DEBUG)==KEY_DEBUG)
                    ||  ( (Key&KEY_SELFTEST)==KEY_SELFTEST))
                    {    
                        gcKeyFilter=0;       
                        gcKeyStack[gcKeySavePtr]=Key;
                        gcKeySavePtr=(gcKeySavePtr+1)%MAX_KEY_STACK;  
                        Beep(1,50);           //beep 10ms                     
                    }       
                } 
            }             
        }
        else
        {
            if(gcKeyFilter>10)            //延时去抖动 ,按键松开的情况
            {
                gcKeyFilter=0;
                gcKeyStack[gcKeySavePtr]=gcOldKey;
                gcKeySavePtr=(gcKeySavePtr+1)%MAX_KEY_STACK;
                Beep(1,100);           //beep 10ms                  
            }     
        }
        #ifdef _DEBUG                                 
        //printf("Key = 0x%X \n",(int)Key);    
        #endif
}
                                                                                  
                                                           
/**************************************************************************
    get key code,return 0 if no key
***************************************************************************/
unsigned char GetKey(void)
{
    unsigned char ret;

    if(gcKetGetPtr!=gcKeySavePtr)
    {
        ret=gcKeyStack[gcKetGetPtr];
        gcKetGetPtr=(gcKetGetPtr+1)%MAX_KEY_STACK;
    }
    else
        ret=0;    
    return ret;
}