MC9S08GT16A - Keyboard interrupt problem

[sm]

Hello,

I work with a MC9S08GT16A.

I have an interrupt whan I press my Button, but not every time I remove my finger.

You can see below my configuration:

Is there an errata sheet with this kind of problem?

I thank you a lot.

Code:

//PULL-UP for my BP.  PTAPE_PTAPE4 = 1;   KBIPE_KBIPE4 = 1;    KBISC_KBIE   = 1;    KBISC_KBIMOD   = 0;    KBISC_KBEDG4   = 0;   void interrupt 3 It_BP(void){    if  (KBISC_KBF == 1)   {      KBISC_KBIE  = 0;      KBISC_KBACK  = 1;                                                *  ==>     I send here a tempo of 30 ms.     And call after the following function.     }   } // end of It_BPvoid ihmTraiterTempoValidationBP(void){   *  ==> Button pressed<=> ihmEtatBP = TRUE;    if( ihmEtatBP != drvIhmTesterEtatLAB())    {                          KBISC_KBIE = 1;               if (ihmEtatBP == TRUE)      {           ihmEtatBP = FALSE;      }      else      {        ihmEtatBP = TRUE;      }            }} // end of ihmTraiterTempoValidationBP

 

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Alban Edit: Please include FSL Part Number in all Message Subjects line.


Message Edited by Alban on 2007-08-01 08:07 PM

[bigmac]

Hello,

It is not entirely clear what you are hoping to achieve.  You appear to have set up the KBI module so that PTA4 should cause an interrupt to occur on a negative edge, presumably when the button is pressed.  It then seems you intend to disable the KBI interrupt (for a period of 30ms ??).  Whether or not you would get a further interrupt when the button is released would depend on KBI interrupt being re-enabled, and whether there was any contact bounce on release.  If no bounce, no interrupt since a negative edge remains selected.

However, there seems to be another problem with your posted code - should not the KBI module use vector 22, rather than vector 3?

Regards,

Mac

[sm]

Hello,

I maintain, Interrupt vector is the 3rd.

I treat the bounce(100 ms), but I do not inverse the polarity with KBISC_KBEDG.

1 interrupt on 10 do not rise.

...

[Alban]

Hello,

Interrupts are numbered from the top address of 0xFFFF.
Vector 3 is LVD.

Cheers,
Alban.