I'm trying to test the AT commands with esp32-WROOM and usb/ttl , the connections : Tx of esp32 -> Rx of ttl Rx of esp32 -> Tx of ttl 3.3v of esp32 -> 3.3v of ttl GND of esp32 -> GND of ttl EN pin of esp32 -> 3.3v GPIO0 of esp32 -> 3.3v (for normal mode) after that when I test a simple AT command th...