topic GPIO read frequency in i.MX Processors

GPIO read frequency

charleshuang — Tue, 11 Jun 2019 03:08:30 GMT

Hi All,

We would like to read the GPIO triggerred by interrupt. So, we want to confirm which is the maximum frequency to read the GPIO?

We also find two articles in the community, but the information is so different.

https://community.nxp.com/thread/454951

=> It mentions 300 ns = 3333kHz.

https://community.nxp.com/message/974747

=> The picture shows it's around 4.6kHz

Best regards,

Daniel

Re: GPIO read frequency

igorpadykov — Tue, 11 Jun 2019 06:06:23 GMT

Hi Daniel

typical read gpio frequency is about several MHz however it may be slower

depending on processor loading.

Best regards
igor
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