ColdFire/68K Microcontrollers and ProcessorsのトピックMCF5234 PIT Problem

MCF5234 PIT Problem

sirlenzelot — Fri, 23 Mar 2007 19:02:52 GMT

Hello,

I try to get PIT0 running. Everything works fine so far. As PIT Counter reaches 0 my ISR is called. Bus as it is leaved, I get Interrupt 2 (Access Error).

Do I need to do anything else but set PSCR.PIF = 1 in my ISR in order to reset the PIT Interrupt?

PIT0 Setup and ISR:

Code:

PMR.OVW = 1;
PMR.PM = 0x8F0D;PCSR.PRE = 0xB;PCSR.PIE = 1;PCSR.DBG = 1;PCSR.RLD = 1;PCSR.EN = 1;void PIT0_isr(void){     PIT0.PCSR.B.PIF = 1;}

Did someone have a similar problem and solved it?

Thanks for your help.

best regards (vy73)

Sir Lenzelot

Re: MCF5234 PIT Problem

stzari — Fri, 23 Mar 2007 19:09:21 GMT

Hi,

Don't you have to declare the handler as an interrupt function ?
(I haven't worked with CodeWarrior, so I can't tell you how to do this).

HTH
Stamatis

Re: MCF5234 PIT Problem

sirlenzelot — Fri, 23 Mar 2007 19:14:23 GMT

Hi Stamatis.

That was my mistake.

Thanks for opening my eyes.

Have a nice weekend.

best regards (vy73)

Sir Lenzelot

Message Edited by sir lenzelot on 2007-03-2302:14 PM