用Python通过RS232从设备（位移测量）读取数据

Question

我有一个位移测量，我想让Python给我值，但我不知道如何接收数据

`import serial

port = "COM3"
baud = 115200

ser = serial.Serial(port, baud, timeout=1)

    # open the serial port
if ser.isOpen():
     print(ser.name + ' is open...')

while True:
    cmd = input("Enter command or 'exit':")
        # for Python 2
    # cmd = input("Enter command or 'exit':")
        # for Python 3
    if cmd == 'exit':
        ser.close()
        exit()
    else:
        ser.write(cmd.encode('ascii','strict')+'\r\n')
        out = ser.read()
        print('Receiving...'+out)

`

Answer 1

write(...只接受binary数据。你知道吗

DocumentationpySerial API
write(data)
Write the bytes data to the port. This should be of type bytes (or compatible such as bytearray or memoryview). Unicode strings must be encoded (e.g.'hello'.encode('utf-8').