Interrupt for i.MX8M Mini

Norihiro — Sun, 24 Dec 2023 23:59:42 GMT

Hello,

Our customer need to use 8 IRQ (they planned to use IRQ56 ~ IRQ63) for external interrupt signals on i.MX8M Mini. They designed PCB to use 4-11 of GPIO1, but they noticed that 0-7 of GPIO1 was fixed for interrupt. Therefore, they can only use IRQ56-59 on their board.

Is there any way to support up to 8 interrupts from 4-11 of GPIO1 other than INT0-7?

In worst case scenario, customer is thinking of using the following IRQ 64.

"Combined interrupt indication for GPIO1 signal 0 throughout 15"

In that case, is it possible to separate the operation of GPIO1 4 - 7 and use only GPIO1 8 - 11 to control IRQ64?

Thanks,

Norihiro Michigami

AVNET

Re: Interrupt for i.MX8M Mini

jimmychan — Tue, 26 Dec 2023 16:48:30 GMT

FYI. Please read this thread for the gpio interrupt concept.

https://community.nxp.com/t5/i-MX-Processors/Interrupts-with-GPIO1-INT0-7/m-p/221515#M14660

And you can find the interrupt source by checking the GPIOx_ISR even the same group of gpio. Please read the chapter 8.3.2.3 Interrupt Control Unit in the RM for details.

topic Interrupt for i.MX8M Mini in i.MX Processors

Interrupt for i.MX8M Mini

Re: Interrupt for i.MX8M Mini