1.7.1.2 SysTick Timer Configuration

The SysTick timer can be configured using the Libero software, as shown in Figure 1-3, for the SysTick calibration value; which is the rollover value of the internal SysTick timer, and SysTick clock frequency as the division (4, 8, 16, or 32) of Cortex-M3 clock. This value is loaded into the STCLK_DIVISOR register and it has to be configured to make sure that the SysTick clock frequency is less than half of the frequency of Cortex-M3. SysTick also can be configured using the firmware by using the following register, as depicted in the following table