diff options
Diffstat (limited to 'electronics/asm/final.asm')
| -rw-r--r-- | electronics/asm/final.asm | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/electronics/asm/final.asm b/electronics/asm/final.asm new file mode 100644 index 0000000..3326119 --- /dev/null +++ b/electronics/asm/final.asm @@ -0,0 +1,75 @@ +start: +init: + clrf PORTA ; make sure port A output latches are low + clrf PORTB + bsf STATUS,RP0 ; select memory bank 1 + + movlw b'11111111' ; set port A data direction to inputs + movwf TRISA + movlw b'00000000' ; set port B data direction to outputs + movwf TRISB + bcf STATUS,RP0 ; select memory bank 0 + + bsf INTCON, INT0IE + bsf INTCON, GIE + + rawtemp EQU B6 + countdown EQU B7 + + movlw 5 + movwf countdown + movlw 0 + + goto main + +interrupt: + btfss INTCON, INT0IF + retfie + + clrf PORTB + + bcf INTCON, INT0IF + bsf INTCON, GIE + bsf INTCON, INT0IE + + ; USE A TRANSITOR WITH 1K resistor to the power rail of chip + + goto start ; restarts the program + retfie + +beep: ; a for loop that beeps a buzzer and turns on a led then sets a led on + ; if nothing is done + + bcf PORTB, 3 ; turn off the status + bsf PORTB, 0 ; put a RED LED on PORTB:0 + bsf PORTB, 1 ; put a BUZZER on PORTB:1 + call wait1000ms + bcf PORTB, 0 + bcf PORTB, 1 + call wait1000ms + + decfsz countdown, F + goto beep + + bsf PORTB, 2 ; put an AMBER LED on PORTB:2 + + goto start +main: ; reads the temprature + bsf PORTB,3 ; put a GREEN LED for status on PORTB:3 + + call readadc1 ; put a THERMISTOR on PORTA:1 + movf B1, W + movwf rawtemp + + call readadc0 ; put a POT on PORTA:0 + movf B0, W + + subwf rawtemp, w ; subtract the from the threshold value + btfss STATUS, 0 ; if higher than desired temp + goto beep ; ^ + + clrf STATUS + + goto main + + END ; ends the program |