LPC824 Invert Input Signal to Output

scruffmeister — Sat, 07 Dec 2024 19:20:49 GMT

Using the LPC824 Is there an efficient way to take an input signal on a pin, invert it and route/output it on another pin without using an interrupt?

Re: LPC824 Invert Input Signal to Output

xiangjun_rong — Mon, 09 Dec 2024 07:00:47 GMT

Hi，

I have not good idea to invert a signal from a pad and output an inverted signal to another pad without interrupt for LPC824.

But the LPC804 has PLU, which enable you invert a signal from the PLU input pad and output the inverted signal to another PLU output pad.

This is LPC804 website:

Of course, you can use PINT module to generate interrupt, in the ISR, read the logic of input pin, and output the inverted logic to another GPIO pad.

Hope it can help you

XiangJun Rong