//********************************************************************** 

void	main()
{
	static	unsigned	int		ad, adbuf[30], cnt, max, min;
	//
	CMCON = 0b00000111;
	ANSEL = 0b00000100;
	TRISA = 0b00111111;
	TRISB = 0b00000000;
	OSCCON = 0b01110000;
	//
	for (cnt = 0; cnt < 10; cnt++) {
		PORTB = 0b00000000;
		PORTA = 0b00000000;
		Delay_ms(100);
		PORTB = 0b11111111;
		PORTA = 0b11000000;
		Delay_ms(100);
	}
	while (1) {
		// アナログデータを30個読み込む
		for (cnt = 0; cnt < 30; cnt++)
			adbuf[cnt] = Adc_Read(2);
		// その30個のデータから最大値と最小値を求める
		max = 0;
		min = 1024;
		for (cnt = 0; cnt < 30; cnt++) {
			max = (max < adbuf[cnt]) ? adbuf[cnt] : max;
			min = (min > adbuf[cnt]) ? adbuf[cnt] : min;
		}
		// 最大値と最小値の差を求める 
		ad = (max - min) / 100;
		// 
		switch (ad) {
		case 0:
			PORTB = 0b11111110;
			PORTA.F6 = 1;
			PORTA.F7 = 1;
			break;
		case 1:
			PORTB = 0b11111100;
			PORTA.F6 = 1;
			PORTA.F7 = 1;
			break;
		case 2:
			PORTB = 0b11111000;
			PORTA.F6 = 1;
			PORTA.F7 = 1;
			break;
		case 3:
			PORTB = 0b11110000;
			PORTA.F6 = 1;
			PORTA.F7 = 1;
			break;
		case 4:
			PORTB = 0b11100000;
			PORTA.F6 = 1;
			PORTA.F7 = 1;
			break;
		case 5:
			PORTB = 0b11000000;
			PORTA.F6 = 1;
			PORTA.F7 = 1;
			break;
		case 6:
			PORTB = 0b10000000;
			PORTA.F6 = 1;
			PORTA.F7 = 1;
			break;
		case 7:
			PORTB = 0b00000000;
			PORTA.F6 = 1;
			PORTA.F7 = 1;
			break;
		case 8:
			PORTB = 0b00000000;
			PORTA.F6 = 0;
			PORTA.F7 = 1;
			break;
		case 9:
			PORTB = 0b00000000;
			PORTA.F6 = 0;
			PORTA.F7 = 0;
			break;
		}
		Delay_ms(10);
	}
}

//**********************************************************************