What modules should be used when using Python serial port?

If you still do not know how to use the Python serial port during the Python application process, you can refer to the following articles to have a correct understanding of the use of the Python serial port, the following is an introduction to the relevant content of the article. I hope you will have some gains.

To use the Python serial port, you must first download the relevant modules:

 
 

  
  
1. pyserial   
  
  
2. pywin32 (http://sourceforge.net/projects/pywin32/)  
  
  
 
 
 

Google "Python serial port operation" keyword, find the relevant python code, send data can be assembled and processed by chr and pack, such:

 
 

  
  
snd = '' 
  
  
snd += chr(97)  
  
  
data = 0x12345678 
  
  
snd += pack.('i', data)  
  
  
snd += chr(0x64)  
  
  
self.l_serial.write(snd);  
  
  
 
 
 

# The sent data is in hexadecimal format: 61 78 56 34 12 64 the received data uses the ord function to convert the byte content into an integer for processing. For example:

 
 

  
  
if ord(recv[2])== 0x01:  
 
 

Determine whether recv [2] is 0x01. Note: This comparison cannot be performed.

 
 

  
  
if recv[2] == 'a':  
  
  
pass  
  
  
 
 
 

Cannot be compared like this.

 
 

  
  
if recv[2] == 0x97:  
  
  
pass  
  
  
 
 
 

The above article describes how to use the Python serial port.