//********************************************************************** 
/*
        【簡易フラッシャー】 
*/
//********************************************************************** 
#define BYTE    unsigned  short
#define WORD    unsigned  int
#define DWORD   unsigned  long
//
#define FLASH   GPIO.B5
#define ON      1
#define OFF     0
//**********************************************************************
extern        void      main();
extern        int       measurement();
extern        void      random_delay();
//**********************************************************************
//■■■メイン関数■■■
void    main()
{
        int     ad, threshold;
        //                
        OSCCON = 0b01000000;
        CMCON0 = 0b00000111;
        ANSEL  = 0b00000010;
        TRISIO = 0b00001010;
        FLASH = OFF;
        //
        ADC_Init();
        //
        threshold = measurement();
        //
        while (1) {
                ad = measurement();
                if (threshold > ad) {
                        FLASH = ON;
                        Delay_ms(10);
                        FLASH = OFF;
                        //
                        random_delay();
                }
        }
}
//**********************************************************************
//■■■照度測定関数■■■
int     measurement()
{
        long    ad;
        int     cnt;
        //
        ad = 0;
        for (cnt = 0; cnt < 100; cnt++) {
                ad += ADC_Get_Sample(1);
        }
        return (ad /= 100);
}
//**********************************************************************
//■■■ランダムディレイ関数■■■
void    random_delay()
{
        int     rd;
        //
        rd = rand() / 2979;     //0.....10
        rd += 10;
        Vdelay_ms(rd * 1000);   //10sec.....20sec
}
//**********************************************************************