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Hello Serial Echo

Fab Academy Module – 06 Embedded Programming

hello serial echo
hello serial echohello serial echo

The Assignment

  1. read an AVR data sheet (ATTtiny 44) – COMPLETE
  2. make serial and programming cables – COMPLETE
  3. add (at least) a button to the serial echo hello-world board
  4. modify the serial echo assembly program to respond to the button
  5. modify the serial echo C program to respond to the button
  6. For more on items 3-5  –> See Modified Hello Echo – Part I: Hello Echo + Button + FTDI

 

The Project: Hello Serial Echo

This hello world board uses a python program (term.py) to send keyboard input over a serial connection from the board to the computer. It is called “serial echo” because when the computer is able to communicate with the board via serial, the python program will allow the keyboard input to be sent to the board and then “echo” it back to the computer. The keyboard input / text will then appear in the python window.

Type the following into the terminal at the prompt:

python term.py /dev/ttyS0 115200

Where “/dev/ttyS0” is the name of the serial port connection to your computer.

When It Is Working – You Should See..

hello echo output

Skills Learned

  • I learned how to send data back and forth via a serial connection using Neil’s python program term.py.
  • Cable making

Tools Used

  • Modela milling machine
  • python – term.py
  • a computer with a serial connection

Tags: Hello World Boards

This entry was posted on Saturday, June 19th, 2010 at 3:39 am and is filed under 06 Embedded Programming, Fab Academy AS220 - Providence, RI, Fab Academy Providence -Year I - Student Projects. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.

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