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Hi,

Can anyone point out what I'm doing wrong with the following (minimal)
code? I can't seem to convince my 16F1824 to output anything on RA5 (pin
2 in the DIP package).

I presume that I've configured the pin to be doing something else, but
I've pored over the datasheet for ages and can't work out what I've
missed. Changing the BSF line to "bsf LATA, 4" switches on pin 3 as
expected. Does anyone have any ideas?

Many thanks,

Rupert



Assembly file below:

#include <p16f1824.inc>

    ERRORLEVEL -302 ; Banksel warning.

    ; Config options
    ; FCMEN 0     (Enables internal oscillator on external death,
    ;              but we're using internal anyway)
    ; IESO 0      (Two-speed start-up. Not used)
    ; -CLKOUTEN 1 (Disable CLKOUT and use the pin for IO)
    ; BOREN 00    (Disable Brown-out reset)
    ; -CPD 1      (Data code protection)
    ; -CP 1       (Code protection)
    ; MCLRE 1     (Use MCLR pin as MCLR: needs a pull-up resistor!)
    ; -PWRTE 1    (Don't enable the power-up timer)
    ; WDTE 01     (Watchdog timer software-controlled)
    ; FOSC 100    (Internal oscillator)
      __config _CONFIG1,b'00100111101100'

    ; LVP 1       (Enable low-voltage programming)
    ; -DEBUG 0    (ICSPCLK, ICSPDAT used for debugger)
    ; '1'         unused
    ; BORV 1      (Disabled anyway)
    ; STVREN 1    (Stack under/overflow reset)
    ; PLLEN 0     (PLL not used)
    ; '111111'    unused/reserved
    ; '11'        (Disable write protection)
      __config _CONFIG2,b'10111011111111'

      UDATA

..RST code h'0000'
    goto setup

..ISR code h'0004'
    retfie

setup:
    banksel ANSELA
    clrf    ANSELA
    banksel TRISA
    clrf    TRISA
    banksel LATA
    clrf    LATA
    goto    main

main:
    clrwdt

    banksel LATA
    bsf     LATA, 5

    goto    main

      END

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