The example demonstrates the Thread Sleepy End Device (SED), the device will enter [Deep Sleep mode](https://docs.espressif.com/projects/esp-idf/en/latest/esp32c6/api-reference/system/sleep_modes.html#sleep-modes) during idle state.
This example is designed to address a specific deep sleep application scenario. First, it connects to the Thread network, and after 5 seconds when the state changes to CHILD, it enters deep sleep mode. There are two ways to wake up in this example: one is by using a 20-second periodic RTC timer, and the other is through GPIO input. Deep sleep is part of the upper-layer logic, and it's the user's responsibility to manage it in their own applications. If you need more wake-up methods, you can refer to the [Exapmle deep sleep](../../../system/deep_sleep/). Additionally, Espressif provides a stub for handling wake-ups, which allows for a quick check, and the user can decide whether to wake up or continue deep sleep in this stub, as explained in the [Example deep sleep stub](../../../system/deep_sleep_wake_stub).
Note: Implementing a standard Thread Sleepy Device is recommended using the [Light Sleep example](../light_sleep). Deep sleep triggers a reboot, and the device needs to undergo a re-attach process to rejoin the network. This means additional packet interactions are necessary after each wake-up from deep sleep. It can be advantageous in reducing power consumption, especially when the device remains in a sleep state for extended periods, such as more than 30 minutes.
## How to use example
### Hardware Required
* Prepare two 802.15.4 SoC development boards, one for an OpenThread Leader and the other one for an OpenThread Sleepy End Device (SED).
* Connect the board using a USB cable for power supply and programming.
## Configure the Openthread Dataset
* Run [ot_cli](../../ot_cli/) on another 802.15.4 SoC device to create openthread dataset configuration and start an openthread network as the Leader.
* Configure the Openthread dataset using `idf.py menuconfig` in `Component config ---> Openthread ---> Thread Operation Dataset`, ensuring that the openthread sleepy device's dataset matches the dataset of the Leader device.
### Build and Flash
Build the project and flash it to the board. Use the following command: `idf.py -p <PORT> erase-flash flash monitor`.
### Example Output
As the example runs, you will see the log output indicating the initialization and operation of OpenThread, including the device joining the OpenThread network as a Sleepy End Device (SED).
