A question about GPIO5 on DM355 DVEVM

Hi everyone,

I'm using dm355, dvsdk_1_30_01_41, and my mpeg4 works ok.

But now I want to use gpio5, actually I used gpio 0~6. I configure GPIO5 to generate an interrupt (falling edge or rising), everything looks ok. BUT once I give a pulse to the gpio5 , my working MPEG4 Engine just stoped. It just stoped at VIDENC1_process(enc, &inBufDesc, &outBufDesc, &inArgs, &outArgs) and I'm really at a loss.

So I think maybe gpio5 is working for something originally ??

Why a pulse to gpio5 just kill my Mpeg4 encode process ??  What's more,  the Jpeg encode process works ok even interrupt gpio5.

Please help..

thx...