topic Re: LPC55S69 - GPIO Pin as NMI using Config Tools in MCUXpresso Config Tools

LPC55S69 - GPIO Pin as NMI using Config Tools

PhilV — Tue, 19 Sep 2023 08:45:39 GMT

Hi, I am using mcuXpresso with the config tool to setup an LPC55S69.

I want PIO1_18 to be non-maskable-interrupt.
In the user manual for the LPC55S69 it seems to indicate that this is possible, but I do not see how to do this via the configuration tools?

In the Pin Configuration "Pins" table I have set it for "PINT:PINT,0" (do I also need to set it as GPIO?)

In the Peripherals Configuration tool I can then configure the PINT for Falling edge etc.
I can also choose to "Enable callback/interrupt" - (what is the reason for being able to configure it and not enable it?)
If I enable it I can then name a callback function and handle it... but I don't see any option to make this the NMI?

Please advise?

Re: LPC55S69 - GPIO Pin as NMI

Miguel04 — Mon, 18 Sep 2023 21:31:23 GMT

Hi @PhilV

Config tools is usefull for some "simple" configurations and it does not supports all the modules, since the SYSCON is something more complicated besides the clocks configurations and the NMI setup has to be by writing on the register by programming them.

Best Regards, Miguel.

Re: LPC55S69 - GPIO Pin as NMI using Config Tools

PhilV — Fri, 22 Sep 2023 10:31:39 GMT

Just for future visitors...

See also this thread for the implementation details:

https://community.nxp.com/t5/LPC-Microcontrollers/LPC55S69-IRQ-Numbers-for-NMI/m-p/1723892/highlight/true#M54111