adcadc.c

来自「智能遥控车代码」· C语言 代码 · 共 35 行

//ADCADC.c : source file for the ADC ADC
//

#include "ADC.h"
#include "ADCADC.h"

/////////////////////////////////////////////////////////////////////////////
//ADCADC

void adc_init(void)
{
	//{{WIZARD_MAP(ADC)
	// ADC Clock: 4000.000kHz
	// ADC Voltage Reference: AREF
	// ADC Noise Canceler Disabled
	ADCSRB |= 0x0;
	ADMUX = 0x0;
	ADCSRA = 0x80;
	//}}WIZARD_MAP(ADC)
}

unsigned int read_adc(unsigned char adc_input)
{
	// Set ADC input
	ADMUX &= 0xE0;
	ADMUX |= adc_input;
	// Start ADC conversion
	sbi(ADCSRA, ADSC);
	// Waiting for ADC conversion completed
	loop_until_bit_is_set(ADCSRA, ADIF);
	sbi(ADCSRA, ADIF);

	return ADCW;
}