[piczim]

I am having a problem with a small routine that I am trying to get to work. Basically I want 2 LED's to flash siultaneously on and of for a second. I have blown the pic and it sort of works but flash as its supposed to then starts flashing eratically. I really dont know where to bgin and some assistance would be great

[jancu]

sorry only found your post now,can i help you or did you come right?

[jancu]

You can buy flashing leds to start with but if you want to use a pic i would suggest buying yourself a pickit 2 or pickit 3 from microchip.This will develop your microcontroller skills alot because it comes with examples covering basic to advanced like subroutines.If you want to you can sent me detailed description of components used like a pic 12f507 etc.a drawing of your diagram could also help me a lot.How is your spares availability,if you want to i can sent you needed spares etc what you need from pretoria south africa as i see you are from zim.

[piczim]

Hi This will be great as I often cant get some of the components in Zim. I have a Picstat plus and use mplab 8

Below is my code the LED is flashing but not in a 1 second cycle. I am just using flashing LED' to get to understand basic pic language.

I am looking for a suitable cutter to cut my PCB do you sell these.

My big problem is I dont understand most of the terminology and instructions. My biggest problem at the moment is understanding the timing and seting it and understanding it.

Thanks

Rodney

[email protected]

LIST P=12F675
INCLUDE <P12F675.INC>
__CONFIG _INTRC_OSC_NOCLKOUT & _WDT_OFF & _PWRTE_ON & _MCLRE_OFF & _CP_OFF & _CPD_OFF
ERRORLEVEL -302
;Equates
COUNTVAL EQU 0X0F
COUNT EQU 0X20
ORG 0
GOTO START
; DELAY SUBROUTINE
DELAY:
MOVLW COUNTVAL ; Reset outer counter
MOVWF COUNT
BANKSEL INTCON
DELAY2:
BCF INTCON,T0IF ; Clear TMR0 overflow flag
DELAY3:
BTFSS INTCON,T0IF ; Wait for TMR0 overflow
GOTO DELAY3
DECFSZ COUNT,1 ; Decrement outer counter
GOTO DELAY2
RETURN
; MAIN
START:
BANKSEL TRISIO ; Bank 1
BCF TRISIO,2 ; Set RA2 to output (bit 2)
MOVLW B'11010111' ; TMR0 using Fosc/4, Prescaler 1:256
BANKSEL OPTION_REG
MOVWF OPTION_REG
LOOP:
BANKSEL GPIO ; Bank 0
BSF GPIO,2 ; Turn on RA2
CALL DELAY
BANKSEL GPIO
BCF GPIO,2 ; Turn off RA2
CALL DELAY
GOTO LOOP
END

[jancu]

PICkit 2 Development Programmer/Debugger

[alufly]

Use Flowcode it makes life very easy.

Keith.