ST STM32F31xx

General-purpose timers (TIM)
UM1581
532/584
DocID023800 Rev 1
TIM_Update_Source
 #define: TIM_UpdateSource_Global ((uint16_t)0x0000)
Source of update is the counter overflow/underflow or the setting of UG bit, or an update
generation through the slave mode controller.
 #define: TIM_UpdateSource_Regular ((uint16_t)0x0001)
Source of update is counter overflow/underflow.