stm32systick knowledge-EEWORLD

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Systick, also known as tick timer, is a 24-bit simple timer of the STM32 core, often used for delay and system heartbeat functions.

Systick has a total of 4 registers CTRL, LOAD, VAL, CALIB

The definitions of each bit of SysTick->CTRL are shown in Figure 5.1.2.1: The definition of SysTick-> LOAD is shown in Figure 5.1.2.2: The definition of SysTick-> VAL is shown in Figure 5.1.2.3: SysTick-> CALIB is not commonly used and we will not use it here, so we will not introduce it.
stm32systick knowledge

From the above we can see that it is indeed the simplest timer, and is very suitable for delay.

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