import serial from time import sleep ser = serial.Serial() #ser.port = "/dev/ttyUSB0" ser.port = "/dev/ttyS0" ser.baudrate = 9600 ser.bytesize = serial.EIGHTBITS #number of bits per bytes ser.parity = serial.PARITY_NONE #set parity check: no parity ser.stopbits = serial.STOPBITS_ONE #number of stop bits ser.timeout = 1 #non-block read ser.open() #ser.write("LOCK1OUT0VSET1:31.00ISET1:3.480VSET2:31.00ISET2:5.100") while 1: ser.write("VSET1:10.00") sleep(2) ser.write("VSET1:20.00") sleep(0.1) ser.write("OUT1") sleep(2) ser.write("*DIN?") sleep(0.1) print ser.read(17)