Introduction

This example puts the device into IDLE mode and then wakes up the device from IDLE using watchdog timer.

The device wakes up from the IDLE mode when the watchdog timer overflows, triggering an interrupt. A pre scalar is set for the watchdog timer to change the counter overflow time.

GPIO1 is pulled high before entering the IDLE mode and is pulled low when in the wakeup ISR.

External Connections

• On device wakeup, the GPIO1 will be low and LED1 will start blinking