CN300/Src_app/key_drivers.c

#include "key_drivers.h"
#include "adc.h"

Key_TypeDef Key_On_Off;
Key_TypeDef Key_Walk;
Key_TypeDef Key_Light;
Key_TypeDef Key_Set;
Key_TypeDef Key_Down;
Key_TypeDef Key_Up;

static void _GPIO_Read(Key_TypeDef* Key)
{
 static uint8_t ReadData;
	
	if(*(Key->ADC_result)>3000)
	{
	  ReadData = 0x00;
	}
	else  if(*(Key->ADC_result)<1000)
	{
	  ReadData = 0x01;
	}
	Key->Trg = ReadData & (ReadData ^ (Key->Cont));
	Key->Cont = ReadData;
}

void KeyParamInit(Key_TypeDef * Key)
{
	Key->Cont = 0;
	Key->Trg = 0;
	Key->PressFlasg = 0;
	Key->TimeCnt = 0;
	Key->KeyStatus = Key_Status_NoPress;	
}

void KeyParamInit_no_cont(Key_TypeDef * Key)
{
	Key->Trg = 0;
	Key->PressFlasg = 0;
	Key->TimeCnt = 0;
	Key->KeyStatus = Key_Status_NoPress;	
}

//按键GPIO初始化
void KeyInitial(void)
{
	//初始化Key_On_Off	
	Key_On_Off.ADC_result =&ADC_Result[1] ;
	KeyParamInit(&Key_On_Off);
	
	//初始化Key_Walk	
	Key_Walk.ADC_result =&ADC_Result[2] ;
	KeyParamInit(&Key_Walk);
	
	//初始化Key_Light
	Key_Light.ADC_result =&ADC_Result[3] ;	
	KeyParamInit(&Key_Light);
	
	//初始化Key_Down
	Key_Down.ADC_result =&ADC_Result[4] ;	
	KeyParamInit(&Key_Down);	
	//初始化Key_Up
	Key_Up.ADC_result =&ADC_Result[5] ;
	KeyParamInit(&Key_Up);
	
}

//按键检测函数
void Key_Check(Key_TypeDef* Key, uint8_t DelayTime)
{
	_GPIO_Read(Key);
	if(Key->Trg & 0x01)//表示按键有触发(下降沿)
	{
	  Key->PressFlasg = 1;
	}
	if(Key->PressFlasg == 1)//按键被触发一次
	{
	  if(Key->Cont & 0x01)//表示按键未放开
	  {
		  Key->TimeCnt++;
		  if(Key->TimeCnt >= DelayTime)//长按时间 DelayTime * 10ms
		  {
		    Key->TimeCnt = 0;
	      Key->PressFlasg = 0;
		    Key->KeyStatus = Key_Status_LongPress;
	      return;
		  }
	  }
	  else if(Key->Cont == 0x00)//按键弹起
	  {
	    Key->TimeCnt = 0;
	    Key->PressFlasg = 0;
		  Key->KeyStatus = Key_Status_ShortPress;
	    return;
	  }
	}
	return;
}

KeyScanCode_Struct_t KeyScan(void)
{
  KeyScanCode_Struct_t Result;
	
	Result.Code = 0x00;
	
	if(*(Key_On_Off.ADC_result)>3000)
		Result.Key_Bit.Power = 0;
	else if(*(Key_On_Off.ADC_result)<1000)
		Result.Key_Bit.Power = 1;
	
	if(*(Key_Walk.ADC_result)>3000)
			Result.Key_Bit.Walk = 0;
	else if(*(Key_Walk.ADC_result)<1000)
			Result.Key_Bit.Walk = 1;
	
	if(*(Key_Up.ADC_result)>3000)
			Result.Key_Bit.Add = 0;
	else if(*(Key_Up.ADC_result)<1000)
			Result.Key_Bit.Add = 1;
	
	if(*(Key_Down.ADC_result)>3000)
			Result.Key_Bit.Dec = 0;
	else if(*(Key_Down.ADC_result)<1000)
			Result.Key_Bit.Dec = 1;
	
//	if(*(Key_Set.ADC_result)>4000)
//			Result.Key_Bit.Set = 0;
//	else if(*(Key_Set.ADC_result)<500)
//			Result.Key_Bit.Set = 1;

	if(*(Key_Light.ADC_result)>3000)
			Result.Key_Bit.Light = 0;
	else if(*(Key_Light.ADC_result)<1000)
			Result.Key_Bit.Light = 1;
	
	return Result;
}