import serial ser = serial.Serial("/dev/ttyUSB0", 115200, timeout=1) #ser.write(open("Config_DollarDollar.txt","rb").read()) serialcmd = '[ESP100]\n' serialcmd = '?\n' ser.write(serialcmd.encode()) print(serialcmd) f = open("Config_DollarDollar.txt","rb") for l in f: print(l) ser.write(l) print("test") while ser.in_waiting > 0: line = ser.readline().decode('utf-8').rstrip() print(line) ser.close()