Adafruit neonpixel library and knock sensor

Projects Programming
1

I am working on a project that requires me to drive about 90 LED`s and I use Adafruit neonpixel library to do this. I am currently trying to integrate a piezo knock sensor into my project but I am stuck because I cannot use interrupts because of adafruit neonpixel library. After hours of trial and error I finally figured out that show() function in neonpixel library disables interrupts but the problem is that with the knock sensor, I see high voltage for a very short amount of time and the only way I can think to register the knock is to get interrupt call. Does anyone have any suggestions as to how I can use the knock sensor and the adafruit neonpixel on the same Arduino?

I am using arduino nano for my project.

2

Does anyone have any suggestions as to how I can use the knock sensor and the adafruit neonpixel on the same Arduino?

Even with interrupts disabled, an event that would trigger an interrupt still causes the interrupt handler to be called, when interrupts are again enabled. Only one such event will be queued, and you won't be able to tell when the interrupt actually occurred.

A knock sensor is an analog device, which doesn't trigger interrupts. So, it is difficult to understand just what the problem is.