Function esp_idf_svc::sys::esp_wifi_scan_get_ap_num

source ยท 
pub unsafe extern "C" fn esp_wifi_scan_get_ap_num(
    number: *mut u16,
) -> i32
Expand description

@brief Get number of APs found in last scan

@param[out] number store number of APs found in last scan

@attention This API can only be called when the scan is completed, otherwise it may get wrong value.

@return

  • ESP_OK: succeed
  • ESP_ERR_WIFI_NOT_INIT: WiFi is not initialized by esp_wifi_init
  • ESP_ERR_WIFI_NOT_STARTED: WiFi is not started by esp_wifi_start
  • ESP_ERR_INVALID_ARG: invalid argument