Espressif ESP32-S2 User Manual

Chapter 2. API Reference
Therefore, application calls to Wi-Fi APIs should be placed in between calls of
esp_mesh_set_self_organized() which disable and enable self organized networking. The follow-
ing code snippet demonstrates how an application can safely call esp_wifi_scan_start() whilst using
ESP-WIFI-MESH.
//Disable self organized networking
esp_mesh_set_self_organized(0, 0);
//Stop any scans already in progress
esp_wifi_scan_stop();
//Manually start scan. Will automatically stop when run to completion
esp_wifi_scan_start();
//Process scan results
...
//Re-enable self organized networking if still connected
esp_mesh_set_self_organized(1, 0);
...
//Re-enable self organized networking if non-root and disconnected
esp_mesh_set_self_organized(1, 1);
...
//Re-enable self organized networking if root and disconnected
esp_mesh_set_self_organized(1, 0); //Don't select new parent
esp_mesh_connect(); //Manually reconnect to router
Application Examples ESP-IDF contains these ESP-WIFI-MESH example projects:
The Internal Communication Example demonstrates how to set up a ESP-WIFI-MESH network and have the root
node send a data packet to every node within the network.
The Manual Networking Example demonstrates how to use ESP-WIFI-MESH without the self-organizing features.
This example shows how to program a node to manually scan for a list of potential parent nodes and select a parent
node based on custom criteria.
API Reference
Header File
• components/esp_wifi/include/esp_mesh.h
Functions
esp_err_t esp_mesh_init(void)
Mesh initialization.
• Check whether Wi-Fi is started.
• Initialize mesh global variables with default values.
Attention This API shall be called after Wi-Fi is started.
Return
• ESP_OK
• ESP_FAIL
esp_err_t esp_mesh_deinit(void)
Mesh de-initialization.
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Release v4.4

Espressif ESP32-S2 Specifications

General

Brand	Espressif
Model	ESP32-S2
Category	Single board computers
Language	English