solarwind
By: a guest | Jan 21st, 2009 | Syntax:
None | Size: 1.56 KB | Hits: 194 | Expires: Never
#include <p16F690.inc>
__config (_INTRC_OSC_NOCLKOUT & _WDT_OFF & _PWRTE_OFF & _MCLRE_OFF & _CP_OFF & _BOR_OFF & _IESO_OFF & _FCMEN_OFF)
cblock 0x20
Delay1 ; Assign an address to label Delay1
Delay2
Display ; define a variable to hold the diplay
endc
org 0
Start:
bsf STATUS,RP0 ; select Register Page 1
movlw 0xFF
movwf TRISA ; Make PortA all input
clrf TRISC ; Make PortC all output
movlw 0x10 ; A2D Clock Fosc/8
movwf ADCON1
bcf STATUS,RP0 ; back to Register Page 0
bcf STATUS,RP0 ; address Register Page 2
bsf STATUS,RP1
movlw 0xFF ; we want all Port A pins Analoga
movwf ANSEL
bcf STATUS,RP0 ; address Register Page 0
bcf STATUS,RP1
movlw 0x01
movwf ADCON0 ; configure A2D for Channel 0 (RA0), Left justified, and turn on the A2D module
MainLoop:
nop ; wait 5uS for A2D amp to settle and capacitor to charge.
nop ; wait 1uS
nop ; wait 1uS
nop ; wait 1uS
nop ; wait 1uS
bsf ADCON0,GO ; start conversion
btfss ADCON0,GO ; this bit will change to zero when the conversion is complete
goto $-1
swapf ADRESH,w ; Copy the display to the LEDs
movwf PORTC
goto MainLoop
end