8-bit MicrocontrollersのトピックAfter TBM interrupt actice, can't return to mainloop

After TBM interrupt actice, can't return to mainloop

Simen — Sat, 29 Sep 2007 15:14:14 GMT

Dear ALL,

I use CodeWarrior to design MC68HC908GR4.

But I have a problem about using its TBM interrupt.

After the isrTBM active,it can't return to mainloop.

The program always run in isrTBM.

Any suggestion ?

Thanks a lot for help!

Attach file is Demo project,it can show the problem.

Re: After TBM interrupt actice, can't return to mainloop

rocco — Sun, 30 Sep 2007 02:29:44 GMT

Hi Simen, and welcome to the forum.

You need to clear the TBM interrupt, as it won't go away on its own.

To clear the interrupt flag, TBIF, you need to write a one to the TACK bit from within your interrupt service routine. Both of these bits are in the TBCR register.

Re: After TBM interrupt actice, can't return to mainloop

Simen — Mon, 01 Oct 2007 10:04:36 GMT

Thanks a lot for your help,I have solved it!