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7 years, 6 months ago.
What timers does the OS use? Where can I find this?
How do I find out which hardware resources are used by operating system features?
For example I start with the LED blinking demo that user a Ticker. Then I add a PWM output and the LED stops blinking. I assume this is because I selected a PWM pin name that uses the same timer is the LED ticker. I found Periferals.h so I know what timers the PWM pins use but what is used by the OS? Where would this be documented? I did read some place that timer5 is used by the OS. What else is used.
Reason I ask is I have a project that is going to use a lot of timers
2 Answers
7 years, 6 months ago.
IIRC timer5 is the only timer used.
7 years, 6 months ago.
Which target are you using ?
On ST targets, the timer used by the ticker is defined in the hal_tick.h file. It is Timer5 for NUCLEO_F401RE but timer4 for NUCLEO_F103RB...
Thank you. I also found a comment about timer use in PeripheralPins.c linked from the board's page. But was wondering that is the full list of resources used by the OS. I assume based on comments in PeripheralPins.c that the stuff I shouldn't use it commented out.
Thanks for the info as I am using both 401 and 103. I needed to know where to find this for new targets as I may have to move to M7
posted by 06 May 2017