STM32 - Timers - Measuring Time

Timers

Each of the STM32 parts has multiple timers, but some are better than others for measuring the duration of a function.

I firmly believe until you actually measure the time a function takes, you are just guessing,
thinking "the function is working just fine"....
But, to measure the duration of many functions, you need a time base much finer than an OS Tick.
Micro-second resolution is often required.
Although I'd like a 32 bit timer, not all the STM32 parts have one.
I'm pretty sure all have at least a 16-bit timer.  Let's choose an unused timer, and get it
counting micro-second units of time.

Choose A Timer

Open STM32CubeIDE, <project>.ioc file to look at the timers and find one that's available
1) Click on "Pinout & Configuration" tab
2) Click on "Timers"