1. NIOS II Ethernet Communication Final Presentation
By: Gilad Shterenshis
Supervisor: Ina Rivkin
Winter 2008

2. Background and Project Goals
Create simple calculator in NIOS II processor using Ethernet interface
Implement Ethernet interface to the NIOS II w/o OS
Create HW environment for NIOS II processor
Create small calculator program in C/C++

3. Project Steps Build a simple SOPC system
Using On-Chip memory only
Small C library (no user input)
Calculator with RS-232 UART I/F
Using SDRAM memory
Running DE2_NET Example
Loop back cable
Display sent packets
Coding calculator S/W
Generating Ethernet packets
Integration and Debug

4. SOPC Major Components LCD JTAG UART UART NIOS II core PIO Ethernet
SDRAM
Memory
TRI-STATE
BRIDGE
On-Chip
Memory
FLASH
Memory

5. System Setup

6. S/W Operation Sequence
Main
Initiate Controller and peripherals
Register function for interrupt
Main loop - Transmit UDP packets with result embedded
If packet received – Initiate controller
Function: ethernet_interrupts
Receiving packet
Check IP (screen multicast messages)
Read packet data
Build numbers
Calculate result (print to terminal)

7. NIOS II Terminal
Sending packets:
Receiving packets:

8. Ethernet Packet Builder
UDP packets
Enable entering math exercise