Reconnect wifi

Reconnect the last connected wifi.

Request:

"|2|3|\r"

Returns:

"|2|1|\r" Wifi connection status: wifi disconnected

"|2|2|\r" Wifi connection status: wifi is connecting

"|2|3|ip|\r" Wifi connection status: connected to wifi successfully. It returns ip address of OBLOQ

"|2|4|\r" wifi connection status: wifi connection failed, check if SSID and PWD are correct.

Arduino Sample:

softSerial.print("|2|3|\r");