Compiler: C5505: GPIO INTERRUPT ON RISING AND FALLING EDGE

Paolo Martinetti

Tool/software: TI C/C++ Compiler

Hi,

I need an help: on C5505 how may I generate a gpio interrupt (call same interrupt routine) both by pressing and releasing a button?

I saw that by configuring IOINTEDG1/2 register the interrupt is generated only in one case.

Any tip?

Thanks in advance

Paolo

over 7 years ago

0 Yordan Kovachev over 7 years ago

TI__Guru**** 161600 points

Hi Paolo,

The way you describe it: "may I generate a gpio interrupt (call same interrupt routine) both by pressing and releasing a button" it seems like you want a gpio interrupt to be triggered on BOTH rising AND falling edge. However the GPIO user guide (www.ti.com/.../sprufo4.pdf ), Section 2.7.3 Configuring GPIO Interrupt Edge Triggering says: "Each GPIO interrupt source can be configured to generate an interrupt on the rising OR the falling edge.". It seems that you cannot have interrupt o both rising and falling edge.

Best Regards,
Yordan

0 Paolo Martinetti over 7 years ago in reply to Yordan Kovachev

Expert 2730 points

No, it’s not possiblible, there should be a way to interrupt in both press and release case

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Compiler: C5505: GPIO INTERRUPT ON RISING AND FALLING EDGE