temp.asm (790B)
1 start: 2 init: 3 clrf PORTA ; make sure port A output latches are low 4 clrf PORTB ; make sure port B output latches are low 5 bsf STATUS,RP0 ; select memory bank 1 6 movlw b'11111111' ; set port A data direction to inputs 7 movwf TRISA 8 movlw b'00000000' ; set port B data direction to outputs 9 movwf TRISB 10 bcf STATUS,RP0 ; select memory bank 0 11 12 ;bsf INTCON, INT0IE 13 ;bsf INTCON, GIE 14 15 rawtemp EQU B6 16 17 goto main 18 showme: 19 movlw 255 20 movwf PORTB 21 goto main 22 main: 23 call readadc1 ; read the thermistor (at room tem its 73) 24 movf B1, W 25 movwf rawtemp 26 27 call readadc0 28 movf B0, W 29 30 subwf rawtemp, w 31 btfsc STATUS, 0 32 goto showme 33 34 movlw 0 35 movwf PORTB 36 37 goto main 38 39 END ; ends the program