Rachel Legerski - Fab Academy 2015

Networking and Communications

The assignment for this week is to design and build a wired &/or wireless network connecting at least two processors.

Learning to use python...again! This is a struggle for me because it is not intuitive. I have to open up my notes each time I have to work through the process.
"Blurt out" a message and the board will "handshake" The message will be sent out and an acknowledgement will be sent. WHAT???
Network code? I get the idea but I'm not sure how to make it happen.
When we first tried Python, we got an error message that the computer could not find term.py
I went back to the class schedule and found it under Input Week. After copying that to our computer, we were in business!

Where to begin?

Gail and I supported each other through this trying process.
I learned that the command sudo make creates an outfile. It turns the C file into a hex file.
After the sudo make command, we had to enter the password to send the command to the board.
After sudo make program-avrisp2, we ran python to talk to both boards sudo python term.py /dev/TTYUSB0 9600.
I was very excited to type in the 0 and watch my first board respond. Unfortunately, when I typed in the 1, the second board flashed but did not acknowledge receipt.

The first picture shows my boards being programmed. The second picture shows all the windows I needed to open to get through this!

sudo means run as root (administrator)
sudo make compiles c file into hexfile
sudo make program avrisp2 sends the hexfile into the ATTiny using an avrisp2
After sudo make program-avrisp2, we ran python to talk to both boards (sudo python term.py/dev/ttyUSBO9600.
sudo python term.py /dev/TTYUSB0 9600 allows the use of python to run term.py using the USB port at 9600 baud

Project Files: