Messages posted by: PaulStoffregen

I believe input capture (ICP) is pin 8 on the Arduino Uno pinout. If you're measuring a fairly slow signal, under a few kHz (or 10000 RPM motor), pin 8 with a library like FreqMeasure probably makes more sense. For full disclosure, I'm the author of FreqMeasure....

But for higher frequency, you probably do need pin 5, the external clock input for timer1, and perhaps my FreqCount library?

I am working on improvements to the Arduino SPI library, to better manage settings and access to the SPI bus with multiple SPI chips. This work is being done in collaboration with the Arduino developers, to (eventually) become part of the SPI library in future versions of Arduino.

I'm searching for test cases or any programs users have written which regularly access other SPI devices (the S25FL127S flash chip on Anarduino) while the radio might receive data and assert its interrupt request.