Tick Rate LCP11u68

[leechen]

#define TICKRATE_HZ1 (10000)

SysTick_Config(SystemCoreClock / TICKRATE_HZ1);

what difference does it make for different tick rate setting?  for example, does it run slower if I set TICKRATE_HZ1 to 10 comparing to setting TICKRATE_HZ1  to 10000?

[victorjimenez · Accepted solution]

Hello Lee, 

If you set the TICKRATE to 10 it will run slower than if you set the TICKRATE to 10000. If you enter to the function SysTick_Config you will see that the value of SystemCoreClock / TICKRATE_HZ1 is the number of ticks you put in the RELOAD Register. So if you put a big value, for example SystemCoreClock / 10 it will run slower than if you put a smaller value (SystemCoreClock / 10000) because this value corresponds to the number of ticks necessary to shot the interrupt of the SysTick. Higher the number, slower the SysTick and vice versa. 

Hope it helps!

Victor.

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