.nolist
.include "m168def.inc"
		  
.list
;;; code
		  
		  rjmp main
main:
		  ;; set up stack pointer
		  ldi		r16,	high(ramend)
		  out		sph,	r16
		  ldi		r16,	low(ramend)
		  out		spl,	r16

		  ;; lcd setup
		  rcall	lcd_init
		  
		  ;; adc setup
		  ldi		r17,	0			  ;pin ADC0 is temp sensor
		  ori		r17,	(1 << ADLAR)	;left adjusted result (because I only want 8bit)
		  sts		ADMUX,r17

		  ldi		r17,	0
		  ori		r17		(1 << ADPS0) | (1 << ADPS1) | (1 << ADPS2) | (1 << ADEN) ;set adc clock to 1/128 ;enable adc
		  sts		ADCSRA,r17
		  
		  ori		r17,	(1 << ADSC)		  ;fire off one conversion for warm-up
		  sts		ADCSRA,r17
busy_loop:
		  ;; wait for adc conversion
		  lds		r17,	ADCSRA
		  sbrc	r17,	ADSC
		  rjmp	busy_loop

get_adc:
		  ;; get adc value
		  lds		r16,	ADCH
		  
		  ;; start another conversion
		  lds		r17,	ADCSRA
		  ori		r17,	(1 << ADSC)
		  sts		ADCSRA,r17

		  ;; display value
		  push	r16
		  ldi		r16,	0x02		  ;lcd to home position
		  rcall	lcd_write_cmd_byte
		  ldi		r16,	1
		  rcall	delay_ms
		  pop		r16
		  rcall	lcd_write_uint8
		  
		  rjmp busy_loop

.include	"delay.inc"
.include "lcd.inc"