How to disable interrupts from JNI code?

[Dave McLaughlin]

I need to disable interrupts for no more than 5 to 10us in a JNI library as I need to be sure that the GPIO high pulse gets extended by any other tasks.

I found these Linux functions in another driver but I can't seem to find the header file for it in the NDK.

local_irq_save(flags);

local_irq_restore(flags);

Does anyone know the correct functions and header files to disable interrupts?

[Glenn Kasten]

Android native code, including JNI, runs in user mode and has no more permissions or capabilities than managed code (Java, Kotlin).

You'll need to write a device driver that runs in kernel mode.

[Dave McLaughlin]

Thanks Glenn, 

I came across an HX711 driver in one of the Linux github sources so I was able to build this into the Android kernel this morning. I now just need to figure out how to use this and read the data from it.