Hi all,

I'm having a job getting a 14K22 running properly. They are Rev3.

Looking around for answers I see people not happy with the chip,
even at Rev8.

Below is where I'm up to so far.

I can see f/4 on OSC2, so it appears the IRC is alright.

b4,b5,b6 are low, so pull-ups don't seem to be active

b7 seems to be an input (pulled up by the LED it's meant to be driving)

No activity on c7, I should be seeing ~500Hz toggling

Does someone have an example of initialisation please ?

TIA

Joe

         CONFIG  FOSC =3D IRCCLKOUT

         CONFIG PWRTEN =3D ON

         CONFIG WDTEN =3D OFF

         CONFIG LVP =3D OFF

         CONFIG CP0 =3D OFF, CP1 =3D OFF

         CONFIG CPB =3D OFF, CPD =3D OFF

         CONFIG WRT0 =3D OFF, WRT1 =3D OFF

         CONFIG WRTC =3D OFF, WRTB =3D OFF, WRTD =3D OFF

         CONFIG EBTR0 =3D OFF, EBTR1 =3DOFF

         CONFIG EBTRB =3D OFF

         CONFIG MCLRE =3D ON

init     clrf    porta
         clrf    portb
         clrf    portc
         clrf    lata
         clrf    latb
         clrf    latc

         movlw   b'01100000'
;                  -
;                   110         8MHz
;                      -        OSTS
;                       -       freq stable
;                        00     internal RC (set by Config1 FOSC)
         movwf   osccon

         btfss   osccon,hfiofs ;freq stable
         bra     $-2

         movlw   b'00100011'
;                    1           /mclr
;                        1       f1
;                         1      f2
         movwf   trisa

         clrf    wpua
         clrf    ioca

         movlw   b'01110000'
;                   1            PB3
;                    1           PB2
;                     1          PB1
         movwf   trisb

         movlw   b'01111111'    ;pull-ups on b4,b5,b6
         movwf   wpub

         clrf    iocb

         movlw   b'00000100'
;                       1        Vsense
         movwf   trisc

         clrf    ansel
         clrf    anselh

         clrf    rcon           ;IPEN =3D 0, no priority
         clrf    intcon
         clrf    intcon2
         clrf    intcon3

togc     btg     latc,7
         call    msdelay
         bra     togc


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