/*
 * adc.c
 *
 * Created: 09/12/2021 16:31:16
 *  Author: n0x
 */ 

#include "adc.h"

typedef struct ADC_t ADC_t;
struct ADC_t{
	/* ADC Data */
	uint16_t uiADC :16;
	
	/* ADCSRA */
	uint8_t uiADPS0 :1;
	uint8_t uiADPS1 :1;
	uint8_t uiADPS2 :1;
	uint8_t uiADIE :1;
	uint8_t uiADIF :1;
	uint8_t uiADATE :1;
	uint8_t uiADSC :1;
	uint8_t uiADEN :1;
	
	/* ADCSRB */
	uint8_t uiADTS0 :1;
	uint8_t uiADTS1 :1;
	uint8_t uiADTS2 :1;
	uint8_t nui2 :3;
	uint8_t uiACME :1;
	uint8_t nui1 :1;
	
	/* ADMUX */
	uint8_t uiMUX :5;
	uint8_t uiADLAR :1;
	uint8_t uiREFS0 :1;
	uint8_t uiREFS1 :1;
};

#define myADC ((ADC_t*)(0x78))

void 
adc_init(void) 
{
	myADC->uiADLAR = 0;
	myADC->uiREFS0 = 0;		/* Set ADLAR to 0 to not left adjust the presentation of the conversion result */
	myADC->uiREFS1 = 0;		/* Set Voltage reference to 2.56V */
	
	myADC->uiADPS0 = 1;		/* Set ADC Prescaler to 128 */
	myADC->uiADPS1 = 1;
	myADC->uiADPS2 = 1;
	myADC->uiADIE = 1;		/* Enable the ADC interrupt */
	myADC->uiADATE = 0;		/* Disable the ADC auto trigger */
	myADC->uiADEN = 1;		/* Enable ADC */
}

volatile int done = 1;

/* ADC 1 */
uint16_t
adc_get_poti(void) 
{		
	uint16_t adc;
	
	//myADC->uiADIE = 0;		/* Disable interrupt */

	myADC->uiMUX = 1;		/* Set ADMUX to access ADC channel 1 */	

	myADC->uiADSC = 1;		/* Start the conversion */

	done = 0;				/* reset the done flag to false */
	while(done == 0);		/* Wait till conversion completes */
	
	adc = myADC->uiADC;

	//myADC->uiADIE = 1;		/* Enable the interrupt again */

	return adc;
}


/* ADC 0 */
uint16_t 
adc_get_LM35(void) 
{
	uint16_t adc;

	//myADC->uiADIE = 0;		/* Disable interrupt */

	myADC->uiMUX = 0;		/* Set ADMUX to access ADC channel 1 */

	myADC->uiADSC = 1;		/* Start the conversion */

	done = 0;				/* reset the done flag to false */
	while(done == 0);		/* Wait till conversion completes */

	adc = myADC->uiADC;

	//myADC->uiADIE = 1;		/* Enable the interrupt again */

	return adc;
}

ISR(ADC_vect){
	done = 1;				/* set the done flag to true */
}