Estou tentando enviar comandos para minha porta serial, tenho um modem no meu USB e não consigo conectar com putty ou minicom para enviar comandos AT.
dmesg | grep tty
[265301.769187] usb 2-1: GSM modem (1-port) converter now attached to ttyUSB0
[265766.120545] option1 ttyUSB0: GSM modem (1-port) converter now disconnected from ttyUSB0
[265848.450853] usb 2-1: GSM modem (1-port) converter now attached to ttyUSB0
[266256.553290] option1 ttyUSB0: GSM modem (1-port) converter now disconnected from ttyUSB0
[266296.890902] usb 2-1: GSM modem (1-port) converter now attached to ttyUSB0
[267710.969347] option1 ttyUSB0: GSM modem (1-port) converter now disconnected from ttyUSB0
[267735.962921] usb 2-1: GSM modem (1-port) converter now attached to ttyUSB0
[267772.749423] option1 ttyUSB0: GSM modem (1-port) converter now disconnected from ttyUSB0
[267807.950927] usb 2-5: GSM modem (1-port) converter now attached to ttyUSB0
E quando no minicom retorná-lo:
Serial device: /dev/tty8;