topic Re: RT1024 GPIO Interrupt signal timing value in i.MX Processors

RT1024 GPIO Interrupt signal timing value

sbabu — Mon, 05 Jun 2023 11:13:52 GMT

Hi All,

I am using MIMX RT1024, I want to configure the GPIO as interrupt and I want to measure the interrupt signal timing value i.e. how much time the signal was held high or low. I am not able to find a specific register to read that value like in XBAR. Please let me know more pointers on this.

Thanks,

Babu

Re: RT1024 GPIO Interrupt signal timing value

EdwinHz — Mon, 05 Jun 2023 18:38:44 GMT

Hi @sbabu,

If you are looking to measure the time that the interrupt signal of a GPIO was held high or low, I believe you best bet would be to use a timer (i.e. Quad Timer) that starts/stops whenever the interrupt is detected. There is no register that naturally counts the time between interrupts for a GPIO.

BR,
Edwin.

Re: RT1024 GPIO Interrupt signal timing value

sbabu — Tue, 06 Jun 2023 08:19:14 GMT

@EdwinHz Hi Edwin, Thanks for the heads up. I don't want the time between interrupts. I was looking to measure if an interrupt happened how much time that particular GPIO signal was held high, can you please share if any example references available.

Re: RT1024 GPIO Interrupt signal timing value

EdwinHz — Wed, 07 Jun 2023 17:57:08 GMT

Hi @sbabu,

I apologize, I meant to say: *There is no register that naturally counts the time between rising/falling edges on a GPIO for an interruption.*

Sorry for the inconvenience this may cause.