script's execution time measuring

[marcmar]

Hi, I successfully modified the Nordic Semiconductor SDK 13's SAADC example adding a feature that performs the FFT of the sample taken and using an RTC is possible also to do it each a certain time in an infinite loop. I need a way to measure the time that the SAADC sampling and FFT operations take. What could be the easier way?

Thanks in advance

Marco

The code of my project: main.c

[Jørgen Holmefjord]

Hi,

The simplest way should be to set a GPIO pin before starting sampling/FFT and clear the GPIO when doen. Connect the pin to a scope or logic analyzer and measure the time it is set.

Or did you mean a way to measure the time on-chip?

Best regards,

Jørgen

[marcmar]

It's a very effective solution. What alternatives I have if I want to do it on-chip? Thanks

[Jørgen Holmefjord]

You could setup a timer, which you start before the task. When the task is done, capture the value of the timer and convert the value to time.