Espressif ESP32-S2 User Manual

Chapter 2. API Reference
esp_err_t esp_wifi_set_csi(bool en)
Enable or disable CSI.
return
• ESP_OK: succeed
• ESP_ERR_WIFI_NOT_INIT: WiFi is not initialized by esp_wifi_init
• ESP_ERR_WIFI_NOT_START: WiFi is not started by esp_wifi_start or promiscuous mode is not en-
abled
• ESP_ERR_INVALID_ARG: invalid argument
Parameters
• en: true - enable, false - disable
esp_err_t esp_wifi_set_ant_gpio(const wifi_ant_gpio_config_t *config)
Set antenna GPIO configuration.
Return
• ESP_OK: succeed
• ESP_ERR_WIFI_NOT_INIT: WiFi is not initialized by esp_wifi_init
• ESP_ERR_WIFI_ARG: Invalid argument, e.g. parameter is NULL, invalid GPIO number etc
Parameters
• config: Antenna GPIO configuration.
esp_err_t esp_wifi_get_ant_gpio(wifi_ant_gpio_config_t *config)
Get current antenna GPIO configuration.
Return
• ESP_OK: succeed
• ESP_ERR_WIFI_NOT_INIT: WiFi is not initialized by esp_wifi_init
• ESP_ERR_WIFI_ARG: invalid argument, e.g. parameter is NULL
Parameters
• config: Antenna GPIO configuration.
esp_err_t esp_wifi_set_ant(const wifi_ant_config_t *config)
Set antenna configuration.
Return
• ESP_OK: succeed
• ESP_ERR_WIFI_NOT_INIT: WiFi is not initialized by esp_wifi_init
• ESP_ERR_WIFI_ARG: Invalid argument, e.g. parameter is NULL, invalid antenna mode or invalid
GPIO number
Parameters
• config: Antenna configuration.
esp_err_t esp_wifi_get_ant(wifi_ant_config_t *config)
Get current antenna configuration.
Return
• ESP_OK: succeed
• ESP_ERR_WIFI_NOT_INIT: WiFi is not initialized by esp_wifi_init
• ESP_ERR_WIFI_ARG: invalid argument, e.g. parameter is NULL
Parameters
• config: Antenna configuration.
int64_t esp_wifi_get_tsf_time(wifi_interface_t interface)
Get the TSF time In Station mode or SoftAP+Station mode if station is not connected or station doesn’t
receive at least one beacon after connected, will return 0.
Attention Enabling power save may cause the return value inaccurate, except WiFi modem sleep
Return 0 or the TSF time
Parameters
• interface: The interface whose tsf_time is to be retrieved.
Espressif Systems 98
Submit Document Feedback
Release v4.4

Espressif ESP32-S2 Specifications

General

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