adapted working code to KED implementation

main.c

@@ -60,7 +60,7 @@ void TIM2_IRQHandler(){
     if (TIM2->SR & TIM_SR_UIF)
     {
         /* Clear the interrupt even flag. CPU will only respond to new flags thereafter */
-        TIM2->SR &= ~(TIM_SR_UIF);
+        TIM2->SR &= ~TIM_SR_UIF;
 		pinToggle(pinB3);
 	}
 }
@@ -124,6 +124,7 @@ void LEDtoggleOnTimer2underflow()
 		
 	}
 	*/
+#if 0
 	// example based on
 	// https://alsaibie.github.io/me319/prelabsextra/lab4extra/
 	/* Enable Timer 2 peripheral */
@@ -142,6 +143,14 @@ void LEDtoggleOnTimer2underflow()
 	TIM2->DIER |= TIM_DIER_UIE;
 	/* Start Timer */
 	TIM2->CR1 |= TIM_CR1_CEN;
+#endif
+
+	timerInitCounter(timer_2,(8E6/20E3)-1,10000-1,upCounting);
+
+	//TIM2->EGR = TIM_EGR_UG;
+	TIM2->DIER = TIM_DIER_UIE;
+
+	timerSart(timer_2);
 	
 	NVIC_SetPriority(TIM2_IRQn, 2);
 	NVIC_EnableIRQ(TIM2_IRQn);