er the MCU is in Standby or Run mode.</p>
<p>When a rising edge is detected on the EXTI line, an interrupt is generated and the system wakes up the program then checks and clears the standby flag. After clearing the standby flag, the software enables wake-up pin PWR_WAKEUP_PIN4 connected to PC.13, then the corresponding flag indicating that a wakeup event was received from the PWR_WAKEUP_PIN4 is cleared. Finally, the system enters again Standby mode causing LED1 to stop toggling.</p>
<p>A rising edge on WKU