Interrupts.md

@@ -55,7 +55,7 @@ EXTI->FTSR |= EXTI_FTSR_TR4;
 // Trigger the interrupt on a rising edge of line 4
 // EXTI->RTSR |= EXTI_RTSR_TR4;
 
-EXTI->PR |= EXTI_PR_PR4;  // Reset pending register of line 4
+EXTI->PR = EXTI_PR_PR4;  // Reset pending register of line 4
 
 // Assign the interrupt of line 4 to GPIOC (=> PC4)
 // this sets the SYSCFG->EXTICR2 register to 0010 (bits 0:3 refer to EXTI4)
@@ -99,7 +99,7 @@ void __attribute__((naked)) EXTI4_IRQHandler()
 // This is the function executed. It has to be declared as "used".
 void __attribute__((used)) EXTI4_IRQHandlerImpl()
 {
-   EXTI->PR |= EXTI_PR_PR4;  // Always reset pending register!!!
+   EXTI->PR = EXTI_PR_PR4;  // Always reset pending register!!!
    // Write me!
 }
 ```