Renesas Electronics America Inc. “© 2010 Renesas Electronics America Inc. All rights reserved ID 220L: Hands-on Embedded Ethernet Design with an Open Source TCP/IP Stack Fatih Peksenar Senior Manager, Applications Engineering 12 October 2010 Version: 1.2

2 “© 2010 Renesas Electronics America Inc. All rights reserved Mr. Fatih Peksenar Manager, Applications Engineering Responsible for Ethernet Application development within the Renesas America Applications Group. Developed various Ethernet Application projects as examples and for customers. – RX62N, SH7216, H8S2472 platforms PREVIOUS EXPERIENCE: Lead system designer for Allied Telesyn, ADC Telecom, Nortel, where I implemented 10/100/1000 Ethernet. MSEE from the University of Minnesota

3 “© 2010 Renesas Electronics America Inc. All rights reserved Renesas Technology and Solution Portfolio Microcontrollers & Microprocessors #1 Market share worldwide * Analog and Power Devices #1 Market share in low-voltage MOSFET** Solutions for Innovation ASIC, ASSP & Memory Advanced and proven technologies * MCU: 31% revenue basis from Gartner "Semiconductor Applications Worldwide Annual Market Share: Database" 25 March 2010 **Power MOSFET: 17.1% on unit basis from Marketing Eye 2009 (17.1% on unit basis).

4 “© 2010 Renesas Electronics America Inc. All rights reserved 4 Renesas Technology and Solution Portfolio Microcontrollers & Microprocessors #1 Market share worldwide * Analog and Power Devices #1 Market share in low-voltage MOSFET** ASIC, ASSP & Memory Advanced and proven technologies * MCU: 31% revenue basis from Gartner "Semiconductor Applications Worldwide Annual Market Share: Database" 25 March 2010 **Power MOSFET: 17.1% on unit basis from Marketing Eye 2009 (17.1% on unit basis). Solutions for Innovation

5 “© 2010 Renesas Electronics America Inc. All rights reserved 5 Microcontroller and Microprocessor Line-up Superscalar, MMU, Multimedia  Up to 1200 DMIPS, 45, 65 & 90nm process  Video and audio processing on Linux  Server, Industrial & Automotive  Up to 500 DMIPS, 150 & 90nm process  600uA/MHz, 1.5 uA standby  Medical, Automotive & Industrial  Legacy Cores  Next-generation migration to RX High Performance CPU, FPU, DSC Embedded Security  Up to 10 DMIPS, 130nm process  350 uA/MHz, 1uA standby  Capacitive touch  Up to 25 DMIPS, 150nm process  190 uA/MHz, 0.3uA standby  Application-specific integration  Up to 25 DMIPS, 180, 90nm process  1mA/MHz, 100uA standby  Crypto engine, Hardware security  Up to 165 DMIPS, 90nm process  500uA/MHz, 2.5 uA standby  Ethernet, CAN, USB, Motor Control, TFT Display High Performance CPU, Low Power Ultra Low Power General Purpose

6 “© 2010 Renesas Electronics America Inc. All rights reserved 6 Microcontroller and Microprocessor Line-up Superscalar, MMU, Multimedia  Up to 1200 DMIPS, 45, 65 & 90nm process  Video and audio processing on Linux  Server, Industrial & Automotive  Up to 500 DMIPS, 150 & 90nm process  600uA/MHz, 1.5 uA standby  Medical, Automotive & Industrial  Legacy Cores  Next-generation migration to RX High Performance CPU, FPU, DSC Embedded Security  Up to 10 DMIPS, 130nm process  350 uA/MHz, 1uA standby  Capacitive touch  Up to 25 DMIPS, 150nm process  190 uA/MHz, 0.3uA standby  Application-specific integration  Up to 25 DMIPS, 180, 90nm process  1mA/MHz, 100uA standby  Crypto engine, Hardware security  Up to 165 DMIPS, 90nm process  500uA/MHz, 2.5 uA standby  Ethernet, CAN, USB, Motor Control, TFT Display High Performance CPU, Low Power Ultra Low Power General Purpose RX Ethernet, CAN, USB, UART, SPI, IIC

7 “© 2010 Renesas Electronics America Inc. All rights reserved Innovation Internet Ethernet

8 “© 2010 Renesas Electronics America Inc. All rights reserved Our Ethernet Solution Renesas provides you a complete set of FREE tools and low cost MCUs with Ethernet peripheral. Embedded Ethernet connectivity is very easy to achieve when you have Renesas as a partner!

9 “© 2010 Renesas Electronics America Inc. All rights reserved Agenda OSI network layers and RX62N RX62N Ethernet peripherals uIP TCP/IP stack Freely available tools Lab Exercises Questions Feedback Form

10 “© 2010 Renesas Electronics America Inc. All rights reserved Key Takeaways By the end of this session you will be able to: Identify the features of Renesas Ethernet peripherals Find out about freely available networking tools Understand pros an cons of uIP TCP/IP stack Get a functional sample project to take home with you

11 “© 2010 Renesas Electronics America Inc. All rights reserved OSI Networking Model

12 “© 2010 Renesas Electronics America Inc. All rights reserved RX62N and OSI Network Model RDKRX62N RX62N MAC & Driver FW National DP8364 IEEE 1588 PHY Open Source uIP TCP/IP Stack

13 “© 2010 Renesas Electronics America Inc. All rights reserved Ethernet Controller Ethernet and IEEE frames Type encapsulation Length encapsulation Automatic frame checksum 10 and 100 Mbps operation Half and full duplex modes PAUSE MAC layer flow control (IEEE 802.3x) When in full duplex mode Wake-On-LAN (WOL) Magic Packet Detection MII and RMII PHY layer interface

14 “© 2010 Renesas Electronics America Inc. All rights reserved Ethernet Direct Memory Access Controller E-DMAC Directly connected to Ethernet Controller Transfer data between Ethernet Controller and memory Block transfers for efficient system bus utilization Support single frame and multi-buffer operation No need for large single buffers Multiple buffers can handle longer frames Totally automated Transmit and receive buffer management Driver provided as part of the lab Descriptors to define and control the buffers

15 “© 2010 Renesas Electronics America Inc. All rights reserved Ethernet Direct Memory Access Controller E-DMAC Extensive information for buffer control On-chip or external buffers Circular buffers Automated operation

16 “© 2010 Renesas Electronics America Inc. All rights reserved Ethernet Controller E-DMAC Working Together

17 “© 2010 Renesas Electronics America Inc. All rights reserved Questions? True/False Ether Controller is responsible for moving Ethernet data to/from system memory False. This is done by E-DMAC. Main responsibility of Ethernet Controller is transmission and reception of Ethernet frames. E-DMAC can work with internal and external RAM True. There is no limitation on memory space for E-DMAC operations. Ethernet Controller and E-DMAC function together to reduce CPU load True. For example while Ethernet Controller is busy receiving data, E-DMAC can move them to system RAM without loading the CPU. Renesas Ethernet peripherals are almost the same across the different families True. This allows code re-use and easy migration to other Renesas Ethernet devices

18 “© 2010 Renesas Electronics America Inc. All rights reserved Features of uIP TCP/IP Stack Perfect solution for simple applications Small footprint Works on 8-bit to 32-bit MCUs Needs only a timer peripheral No RTOS required High-level applications supported ARP, IP, ICMP (ping), TCP, DHCP, Telnet, DNS Web server and client Supported by active community of developers Developed by Adam Dunkels at Swedish Institute of Computer Science Free to use and distribute

19 “© 2010 Renesas Electronics America Inc. All rights reserved Things to Consider with uIP TCP/IP Stack Single TCP segment in flight Lower throughput with delayed ACK TCP receivers Fixes: – Use uip-split module – Disable delayed ACK at the receiver Single TCP and UDP application Only one TCP/UDP application supported Fixes: – Add a multiplexer layer – Service connections based on TCP/UDP ports Are these a problem? YOU DECIDE!

20 “© 2010 Renesas Electronics America Inc. All rights reserved Questions? True/False uIP works with 8-bit to 32-bit MCUs True. uIP TCP/IP stack scales from low to high end MCUs. uIP requires a DMA engine to run False. The only peripheral needed is a simple timer uIP comes with several application layer software True. DHCP, Web server and client are some of them uIP supports delayed ACK TCP segments False. Each TCP segment must be ACK’ed before another transmitted.

21 “© 2010 Renesas Electronics America Inc. All rights reserved Freely Available Tools Wireshark De facto network protocol analyzer Extensive analysis of frames Freely available from Fping ICMP (ping) message tests the connectivity to another device Fping builds on DOS ping utility with more options Freely available from html html

“© 2010 Renesas Electronics America Inc. All rights reserved 22 Lab Exercises

23 “© 2010 Renesas Electronics America Inc. All rights reserved General Notes on Lab Exercises Refer to lab handout There are questions in lab handout Answers to questions are at the end Total of 4 lab exercises About 15 minutes each

“© 2010 Renesas Electronics America Inc. All rights reserved 24 Lab Exercises – You can start the lab now

25 “© 2010 Renesas Electronics America Inc. All rights reserved Innovation You create the innovation. Renesas is here to help. Let’s build it together!

26 “© 2010 Renesas Electronics America Inc. All rights reserved Questions?

“© 2010 Renesas Electronics America Inc. All rights reserved 27 Thank You!

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