Chapter 2. API Reference
Enumerations
enum esp_now_send_status_t
Status of sending ESPNOW data .
Values:
ESP_NOW_SEND_SUCCESS = 0
Send ESPNOW data successfully
ESP_NOW_SEND_FAIL
Send ESPNOW data fail
ESP-WIFI-MESH Programming Guide
This is a programming guide for ESP-WIFI-MESH, including the API reference and coding examples. This guide is
split into the following parts:
1. ESP-WIFI-MESH Programming Model
2. Writing an ESP-WIFI-MESH Application
3. Self Organized Networking
4. Application Examples
5. API Reference
For documentation regarding the ESP-WIFI-MESH protocol, please see the ESP-WIFI-MESH API Guide. For more
information about ESP-WIFI-MESH Development Framework, please see ESP-WIFI-MESH Development Frame-
work.
ESP-WIFI-MESH Programming Model
Software Stack The ESP-WIFI-MESH software stack is built atop the Wi-Fi Driver/FreeRTOS and may use the
LwIP Stack in some instances (i.e. the root node). The following diagram illustrates the ESP-WIFI-MESH software
stack.
Fig. 1: ESP-WIFI-MESH Software Stack
System Events An application interfaces with ESP-WIFI-MESH via ESP-WIFI-MESH Events. Since ESP-
WIFI-MESH is built atop the Wi-Fi stack, it is also possible for the application to interface with the Wi-Fi driver
via the Wi-Fi Event Task. The following diagram illustrates the interfaces for the various System Events in an
ESP-WIFI-MESH application.
The mesh_event_id_t defines all possible ESP-WIFI-MESH events and can indicate events such as the con-
nection/disconnection of parent/child. Before ESP-WIFI-MESH events can be used, the application must register
a Mesh Events handler via esp_event_handler_register() to the default event task. The Mesh Events
handler that is registered contain handlers for each ESP-WIFI-MESH event relevant to the application.
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