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System Tick Timer
Registers
CTRL
Control and status register
| ENABLE | 0 | Systick timer disabled (reset state) |
| 1 | Systick timer enabled | |
| TICKINT | 0 | Systick interrupt disabled (reset state) |
| 1 | Systick interrupt enabled | |
| CLKSRC | 0 | Systick clock =⇒ fHCLK / 8 (reset state) |
| 1 | Systick clock =⇒ fHCLK |
LOAD
Reload value register
* Reload value of SysTick timer.
VAL
Current value register
* Current value of SysTick timer.