擅长:python、mysql、java
<p>另一种测试物理串行端口的快速方法是用电线/螺丝刀、鳄鱼钳或任何你手头上的东西,把RX和TX(接收和发送)桥接在一起。在这一点上,你发出的一切都会被循环到你身上。您可以在下面使用以下代码片段接收它:</p>
<pre><code>import serial
ser = serial.Serial(0, timeout = 1) # open first serial port
print ser.portstr # check which port was really used
ser.write("hello") # write a string
msg = ser.read("100") #read the content of the input buffer until you get 100 byte or a timeout event
print(msg) #print the content you might need to decode it print(decode(msg))
ser.close()
</code></pre>
<p>这段代码正常工作的关键是将RX和TX桥接在一起。很多教程都会告诉你如何做到这一点。在</p>