MSP432E401Y: NMI callback

You can enable the NMI interrupt and use the interrupt handler below

void NMI_Handler(void)
{

}

Based on the user's guide the active sense of the NMI signal is high it can't be triggered by falling edge.

Thank you for your answer.

I can't seem to make it work.

Where should I put the interrupt handler ?

I'm using TI-RTOS.

Regards.

Hi Victor, I also do not find a function that can configure the GPIO as NMI mode and there is a note that in the gpio.c in driver lib.

"\note A subset of GPIO pins, notably those used by the
//! JTAG/SWD interface and any pin capable of acting as an NMI input, are
//! locked against inadvertent reconfiguration. These pins must be unlocked
//! using direct register writes to the relevant GPIO_O_LOCK and GPIO_O_CR
//! registers before this function can be called."

My recommendation is that you can try to enable the NMI function and use the default NMI handler that I have post before.

Hello Gary,

I saw that but I understood that the pin is locked as NMI by default and if I want to use it as a GPIO I have to unlock it. Is that right ?

In which file should I put the NMI handler ? I tried but couldn't make it work.

Thank you.

Hi Victor,  The PD7 is GPIO function by default. If you want to make it as NMI mode you can try the code bellow I have not a hardware to verify it you can try to run it on hardware to  see if it works

gpio_bitbanded_output_MSP_EXP432E401Y_nortos_ccs.zip