Using GNU screen to debug your serial port

I’m using Linux, and tools like Window’s Hyperterminal to debug your serial port is rare, difficult to use, unpractical, and I have to live with it =) So, after moving here and there, I finally choose my favorite serial debugger in Linux: GNU Screen.

Here’s some tips to use it for your debugging:

• Opening serial port (with the correct baud rate)
  

bash> screen /dev/ttyUSB0 57600

/dev/ttyUSB0 is the serial port, while 57600 sets its baud rate into 57600bps.

• Enable the CTS/RTS handshake

bash> screen /dev/ttyUSB0 57600,ctsrts

• Close the screen after you finish the debugging session

Ctrl + A + k

• View your serial port status (CTS/RTS/DTS/PE/RI..etc)

Ctrl + A + i