Fast Digital Capture to Analyze Frequency | Cypress Semiconductor
Fast Digital Capture to Analyze Frequency
I want to be able to measure the frequency of an incoming square wave signal (0-5V). Because I want to be able to use equivalent-time sampling to measure frequencies above the max CPU frequency of the PSoC, I simply want to be able capture high or low as fast as possible (at regular, known intervals) and store the results for processing.
Is there a way to do this with a digital input pin? Or do I need to use a serial communication block like SPI?
- John E.