mskeypad.h

mstar 776 开发的车载dvd

#ifndef _MSKEYPAD_H_
#define _MSKEYPAD_H_

#include "board.h"
#include "datatype.h"

#ifdef  _MSKEYPAD_C_
#define INTERFACE
#else
#define INTERFACE extern
#endif

#define KEYPAD_USE_ISR 0

//#define KeypadRepeatTimerCount 1 //100ms based

#define KEYPAD_LV_STABLE_COUNT 10 //used in drvisr
#define KEYPAD_LV_FIRSTTIME_ELASPED_COUNT (KEYPAD_LV_STABLE_COUNT+38)//used in drvisr



enum KEYPAD_ADC_CHANNEL
{
    KEYPAD_ADC_CHANNEL_1 = 0,
    KEYPAD_ADC_CHANNEL_2,
    KEYPAD_ADC_CHANNEL_3,
    KEYPAD_ADC_CHANNEL_4,
    KEYPAD_ADC_CHANNEL_5,
};

INTERFACE void  msKeypad_Init(void);
INTERFACE U8    msKeypad_Get_ADC_Channel(U8 Channel, U8 *pvalue);
INTERFACE MSRET msKeypad_GetKey(U8 *pkey, U8 *pflag);
INTERFACE BOOLEAN MDrv_Power_CheckPowerOnKeyPad(void);
INTERFACE U8 KEYPAD_LV_CHANNEL[ADC_KEY_CHANNEL_NUM];
INTERFACE U8 KEYPAD_PREVIOUS_LV_CHANNEL[ADC_KEY_CHANNEL_NUM];
INTERFACE U8 KEYPAD_LV_COUNT_CHANNEL[ADC_KEY_CHANNEL_NUM];
INTERFACE unsigned char tADCKeyLevel[];
INTERFACE void msKeypad_ClearBuffer();
#undef INTERFACE
#endif