Supported Targets	ESP32-H2	ESP32-C6

Sleepy End Device Example

This test code shows how to configure Zigbee sleepy end device.

Hardware Required

• One development board with ESP32-H2 SoC acting as Zigbee end-device (loaded with sleepy_end_device example)
• A USB cable for power supply and programming
• Choose another ESP32-H2 as Zigbee coordinator (see HA_on_off_switch example)

Configure the project

Before project configuration and build, make sure to set the correct chip target using idf.py set-target TARGET command.

Erase the NVRAM

Before flash it to the board, it is recommended to erase NVRAM if user doesn't want to keep the previous examples or other projects stored info using idf.py -p PORT erase-flash

Build and Flash

Build the project, flash it to the board, and start the monitor tool to view the serial output by running idf.py -p PORT flash monitor.

(To exit the serial monitor, type Ctrl-].)

Example Output

As you run the example, you will see the following log:

I (418) sleep: Enable automatic switching of GPIO sleep configuration
I (425) sleep_clock: System Power, Clock and Reset sleep retention initialization
I (433) sleep_clock: Modem Power, Clock and Reset sleep retention initialization
I (441) sleep_sys_periph: Interrupt Matrix sleep retention initialization
I (449) sleep_sys_periph: HP System sleep retention initialization
I (456) sleep_sys_periph: TEE/APM sleep retention initialization
I (462) sleep_sys_periph: UART sleep retention initialization
I (469) sleep_sys_periph: Timer Group sleep retention initialization
I (476) sleep_sys_periph: IO Matrix sleep retention initialization
I (483) sleep_sys_periph: SPI Mem sleep retention initialization
I (490) sleep_sys_periph: SysTimer sleep retention initialization
I (496) sleep_sys_periph: PVT sleep retention initialization
I (514) main_task: Started on CPU0
I (514) main_task: Calling app_main()
I (524) pm: Frequency switching config: CPU_MAX: 96, APB_MAX: 96, APB_MIN: 96, Light sleep: ENABLED
I (525) esp_zb_sleep: Enable ieee802154 zigbee light sleep, the wake up source is ESP timer
I (545) phy: phy_version: 210,0, 11c334c, Sep  4 2023, 17:01:13
I (547) phy: libbtbb version: b821802, Sep  4 2023, 17:01:29
I (548) btbb_init: btbb sleep retention initialization
I (554) ieee802154: ieee802154 mac sleep retention initialization
I (563) main_task: Returned from app_main()
I (650) ESP_ZB_SLEEP: ZDO signal: ZDO Config Ready (0x17), status: ESP_FAIL
I (651) ESP_ZB_SLEEP: Zigbee stack initialized
I (655) ESP_ZB_SLEEP: Start network steering
I (1679) ESP_ZB_SLEEP: Zigbee can sleep
I (2192) ESP_ZB_SLEEP: Zigbee can sleep
I (2386) ESP_ZB_SLEEP: Zigbee can sleep
I (2519) ESP_ZB_SLEEP: Zigbee can sleep
I (2736) ESP_ZB_SLEEP: Zigbee can sleep
I (2853) ESP_ZB_SLEEP: Zigbee can sleep
I (3014) ESP_ZB_SLEEP: Zigbee can sleep
I (3112) ESP_ZB_SLEEP: Zigbee can sleep
I (3238) ESP_ZB_SLEEP: Zigbee can sleep
I (3371) ESP_ZB_SLEEP: Zigbee can sleep
I (3557) ESP_ZB_SLEEP: Zigbee can sleep
I (3718) ESP_ZB_SLEEP: Zigbee can sleep
I (4083) ESP_ZB_SLEEP: Joined network successfully (Extended PAN ID: 60:55:f9:ff:fe:f7:2e:16, PAN ID: 0x6a2a, Channel:13)
I (4137) ESP_ZB_SLEEP: Zigbee can sleep
I (4585) ESP_ZB_SLEEP: Zigbee can sleep
I (5638) ESP_ZB_SLEEP: Zigbee can sleep
I (7504) ESP_ZB_SLEEP: Zigbee can sleep
I (8622) ESP_ZB_SLEEP: Zigbee can sleep
I (9643) ESP_ZB_SLEEP: Zigbee can sleep
I (12585) ESP_ZB_SLEEP: Zigbee can sleep
I (12668) ESP_ZB_SLEEP: Zigbee can sleep
I (16677) ESP_ZB_SLEEP: Zigbee can sleep
I (20701) ESP_ZB_SLEEP: Zigbee can sleep
I (24730) ESP_ZB_SLEEP: Zigbee can sleep
I (24876) ESP_ZB_SLEEP: Zigbee can sleep
I (28778) ESP_ZB_SLEEP: Zigbee can sleep
I (32812) ESP_ZB_SLEEP: Zigbee can sleep
I (36837) ESP_ZB_SLEEP: Zigbee can sleep
I (40866) ESP_ZB_SLEEP: Zigbee can sleep
I (44893) ESP_ZB_SLEEP: Zigbee can sleep
I (48920) ESP_ZB_SLEEP: Zigbee can sleep
I (52929) ESP_ZB_SLEEP: Zigbee can sleep
I (56957) ESP_ZB_SLEEP: Zigbee can sleep
I (60995) ESP_ZB_SLEEP: Received message: endpoint(10), cluster(0x6), attribute(0x0), data size(1)
I (61048) ESP_ZB_SLEEP: Light sets to On
I (61084) ESP_ZB_SLEEP: Zigbee can sleep
I (61199) ESP_ZB_SLEEP: Zigbee can sleep
I (61353) ESP_ZB_SLEEP: Zigbee can sleep
I (61545) ESP_ZB_SLEEP: Zigbee can sleep
I (65371) ESP_ZB_SLEEP: Zigbee can sleep

Please note that due to the default sleep threshold of 20 milliseconds, the device may enter sleep mode frequently and print log Zigbee can sleep. If you want to reduce the number of sleep occurrences, you can adjust the sleep threshold using the function esp_zb_sleep_set_threshold(uint32_t threshold_ms). For example, you can set the threshold to a higher value like esp_zb_sleep_set_threshold(2000); // 2000 milliseconds after initializing Zigbee with esp_zb_init(&zb_nwk_cfg);.

During the light sleep, a typical power consumption is shown below:

Troubleshooting

For any technical queries, please open an issue on GitHub. We will get back to you soon.