include <ESP8266WiFi.h>
void setup()
{
Serial.begin(115200);
Serial.setDebugOutput(true);
Serial.println("Config AP");
WiFi.softAP("ESP_DEMO", "secure");
Serial.println("Set to STA mode");
WiFi.mode(WIFI_STA);
Serial.println("Wifi begin");
WiFi.begin("MYAP", "********");
}
WIFI_AP, WIFI_STA, or WIFI_STA_AP