adc.c

比较器复用_DISABLE,自动触发源连续按键功能

//--------------------------------------------//
#include "adc.h"

//--------------------------------------------//
//adc_key=0-31(测量的电压值)
const	prog_uchar	ADC_KEY_TAB[]=
	{
	2,2,		//key_up			0,1
	0,0,0,		//vol-			2,3,4
	7,7,7,		//jk_up		5,6,7
	5,5,5,		//jk_left			8,9,10
	8,8,8,		//jd_dn			11,12,13
	3,3,3,		//key_dn			14,15,16
	9,9,9,9,	//jk_cen		17,18,19,20
	6,6,6,		//jk_right		21,22,23
	1,1,1,		//vol+			24,25,26
	4,4,4,		//source		27,28,29
	10,10		//nokey			30,31

/*	原v6.5按键
	0,0,		//vol-			0,1
	7,7,7,		//jk_up			2,3,4
	5,5,5,		//jk_left		5,6,7
	8,8,8,		//jk_dn			8,9,10
	2,2,2,		//seek+			11,12,13
	3,3,3,		//seek-			14,15,16
	9,9,9,9,	//jk_cen		17,18,19,20
	6,6,6,		//jk_right		21,22,23
	1,1,1,		//vol+			24,25,26
	4,4,4,		//source		27,28,29
	10,10		//nokey			30,31
*/
	};
/*
void adc_ini(void)
{
ACSR=0x80;			//关比较器!!!!!!!!!!!!
ADMUX=0b11100111;	//内部基准, 左对齐,ADC-7ch
ADCSRA=0b00000111;	//ADC-DISABLE, ADC-STOP, 自动触发DISABLE, FLAG_DISABLE,ADC_INT_DISABLE,预分频507us/25.6K
ADCSRB=0b00000000;	//比较器复用_DISABLE,自动触发源连续（无效）
DIDR0=0X00;			//无数字输入禁止
}
*/

//--------------------------------------------//
void adc_volatge_start(void)
{
ACSR=0x80;			//关比较器!!!!!!!!!!!!
ADMUX=0b01100111;	//V3.3基准, 左对齐,ADC-7ch
ADCSRA=0b00000111;	//ADC-DISABLE, ADC-STOP, 自动触发DISABLE, FLAG_DISABLE,ADC_INT_DISABLE,预分频507us/25.6K
ADCSRB=0b00000000;	//比较器复用_DISABLE,自动触发源连续（无效）
DIDR0=0X00;			//无数字输入禁止
ADCSRA |= (1<<ADEN) | (1<<ADSC);	//ADC允许，启动
}

//--------------------------------------------//
void adc_key_start(void)
{
ACSR=0x80;			//关比较器!!!!!!!!!!!!
ADMUX=0b01100110;	//V3.3基准, 左对齐, ADC-6ch
ADCSRA=0b00000111;	//ADC-DISABLE, ADC-STOP, 自动触发DISABLE, FLAG_DISABLE,ADC_INT_DISABLE,预分频507us/25.6K
ADCSRB=0b00000000;	//比较器复用_DISABLE,自动触发源连续（无效）
DIDR0=0X00;			//无数字输入禁止
ADCSRA |= (1<<ADEN) | (1<<ADSC);	//ADC允许，启动
}


//--------------------------------------------//
void adc_stop(void)
{
ADCSRA &= ~(1<<ADEN) ;	//ADC禁止
}