CC2530: The question about I/O Interrupt , cc2530

ruimao cong

Part Number: CC2530

HI,

In ZSTACK,I find that, the cpu(cc2530) doesn't execute external IO interrupt in time.

I just want , the cpu detects the external I/O interrupt (the Generation time of the interrupt is about 20ms one time), then a pin of the cpu outputs high voltage in time, but i find that the output of the pin is slower than the interrupt generated about>15ms,and the time is defferent every time , why?what should i do reduce the deviation to 2ms?

thanks!

over 8 years ago

0 YiKai Chen over 8 years ago

Guru 735695 points

Do you do this pin output high in ISR function?

0 ruimao cong over 8 years ago in reply to YiKai Chen

Expert 1230 points

HI,Chen,
yes, I use P1.1 or P0.0 to detect the external interrupt,and handle it in ISR function.
In stack 2.5.1a ,are there any other places using these two PINS to dosomething?
thanks!

0 YiKai Chen over 8 years ago

Guru 735695 points

How do you know "output of the pin is slower than the interrupt generated about>15ms?"

0 ruimao cong over 8 years ago in reply to YiKai Chen

Expert 1230 points

I measure it on an oscilloscope

0 YiKai Chen over 8 years ago in reply to ruimao cong

Guru 735695 points

I test with SampleLight and I can toggle GPIO in less than 100u seconds.

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CC2530: The question about I/O Interrupt , cc2530