Espressif ESP32-S2 - ESP_OK: Succeed; ESP_ERR_WIFI_NOT_INIT: Wifi Is Not Initialized by Esp_Wifi_Init

Chapter 2. API Reference
esp_err_t esp_wifi_get_country(wifi_country_t *country)
get the current country info
Return
• ESP_OK: succeed
• ESP_ERR_WIFI_NOT_INIT: WiFi is not initialized by esp_wifi_init
• ESP_ERR_INVALID_ARG: invalid argument
Parameters
• country: country info
esp_err_t esp_wifi_set_mac(wifi_interface_t ifx, const uint8_t mac[6])
Set MAC address of the ESP32 WiFi station or the soft-AP interface.
Attention 1. This API can only be called when the interface is disabled
Attention 2. ESP32 soft-AP and station have different MAC addresses, do not set them to be the same.
Attention 3. The bit 0 of the first byte of ESP32 MAC address can not be 1. For example, the MAC address
can set to be “1a:XX:XX:XX:XX:XX”, but can not be “15:XX:XX:XX:XX:XX”.
Return
• ESP_OK: succeed
• ESP_ERR_WIFI_NOT_INIT: WiFi is not initialized by esp_wifi_init
• ESP_ERR_INVALID_ARG: invalid argument
• ESP_ERR_WIFI_IF: invalid interface
• ESP_ERR_WIFI_MAC: invalid mac address
• ESP_ERR_WIFI_MODE: WiFi mode is wrong
• others: refer to error codes in esp_err.h
Parameters
• ifx: interface
• mac: the MAC address
esp_err_t esp_wifi_get_mac(wifi_interface_t ifx, uint8_t mac[6])
Get mac of specified interface.
Return
• ESP_OK: succeed
• ESP_ERR_WIFI_NOT_INIT: WiFi is not initialized by esp_wifi_init
• ESP_ERR_INVALID_ARG: invalid argument
• ESP_ERR_WIFI_IF: invalid interface
Parameters
• ifx: interface
• [out] mac: store mac of the interface ifx
esp_err_t esp_wifi_set_promiscuous_rx_cb(wifi_promiscuous_cb_t cb)
Register the RX callback function in the promiscuous mode.
Each time a packet is received, the registered callback function will be called.
Return
• ESP_OK: succeed
• ESP_ERR_WIFI_NOT_INIT: WiFi is not initialized by esp_wifi_init
Parameters
• cb: callback
esp_err_t esp_wifi_set_promiscuous(bool en)
Enable the promiscuous mode.
Return
• ESP_OK: succeed
• ESP_ERR_WIFI_NOT_INIT: WiFi is not initialized by esp_wifi_init
Parameters
• en: false - disable, true - enable
esp_err_t esp_wifi_get_promiscuous(bool *en)
Get the promiscuous mode.
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