NETOS 6 1 Training Introduction What is NetOs

NET+OS 6. 1 Training

Introduction

What is Net+Os? GHS Multi 2000 Dev. Tools binutils 2. 12 gcc 3. 2. 0 newlib 1. 11. 0 libstdc++ 3. 0 gdb 5. 3 In Circuit Emulator (Raven) Target Bootloader POST Zip Unzip Rem. Update Boot. P, DHCP, TFTP Application Higher Level Networking Protocols UDP IP, ICMP TCP UDP IP, ICMP, IGMP, PPP, … OS (Thread. X) NVMEM Driver NVMEM Ethernet Dev. -Driver MAC PHY DMA. DD. Ser. DD. DMA MEM 2 Serial GPIO

The Operating System - Thread. X • Thread. X is the underlying RTOS in NET+OS • Scalable, high performance, real-time kernel • Developed by Express Logic (www. expresslogic. com) • Included in NET+OS as a library /netos/lib/32 b/tx. a • Only objects used are linked to the image • ANSI C compliant • Source code optionally available

The TCP/IP Stack • Stack is based on the >>Fusion<< TCP/IP Stack (former Pacific Softworks) • Protocols: PPP, ARP/RARP, ICMP, IGMP, IP, UDP, TCP, DHCP • Berkeley BSD compliant Socket Interface • Included in NET+OS as a library /netos/lib/32 b/tcpip. a • Only objects used are linked to the image • ANSI C compliant

Guide to Protocols inside NET+OS FTP Telnet SMTP HTTP SNMPv 2 TFTP Layer 7 NTP Application Layer 5 DNS Session TCP Transport Layer 3 from PPP from SLIP CSLIP Layer 4 UDP DHCP Boot. P Network to IP IP ICMP IGMP 0800 ARP 0806 RARP 8035 SLIP 10 Base-T 10 Base-F 100 Base-F HPNA Ethertype to IP PAP IEEE 802. 3 CSMA/CD Layer 2 CSLIP PPP CHAP V. 24 V. 21 V. 22 … V. 90 Data Link

Higher Level Networking Protocols • Easy to use APIs for – – – POP 3 / SMTP FTP client and server void application. Start (void) { HTTP unsigned long rc; unsigned long handle; Telnet char to[] = "01739011196@d 2 -message. de"; //char to[] = "nsso 01@marvin. os"; SNMP, char from[] = "devboard@marvin. os"; char subject[] = "Hi there"; SNMPv 2 char msg[] = "Howdy. "; handle = MCCreate(POP 3, 110, "192. 168. 101. 240", – DNS 25, "192. 168. 101. 240"); rc = MCSend. Simple. Mail(handle, from, to, subject, msg, – NTP strlen(msg)); • Fast IP • Fast UDP printf("MCSend. Simple. Mail returned %dn", rc); rc = MCClose(handle); tx_thread_suspend(tx_thread_identify()); }

Low Level Code • Board Support Package (BSP) completely available in source, including device drivers for: – Network Interface, Loop Back Device – Serial: UART, SPI, HDLC – DMA – I 2 C, LCD – USB: Host, Device – Power Save

GHS - Multi 2000

GHS – Multi 2000 • Green Hills Multi 2000, includes – – – Project Builder C/C++ Compiler, Linker, Source Level Debugger Performance Profiler Run-time Error Checking Graphical Function Browser Version Control System includes Interface to Clear. Case as well – Event Analyzer

The GNU Development Tools … run in a UNIX shell emulation called Cygwin / home tuttle usr local x-arm x-m 68 k … opt Net. OS Cygwin bash

Covering the Tools w/ graphical FEs Dev. Tools binutils 2. 10 gcc 2. 95. 2 newlib 1. 8. 1 libstdc++ 2. 81 gdb 5. 0 Insight/gdbtk

GDBTK - Insight – A graphical FE for GDB

The Boot Up Procedure • Bootloader Image • Application Image Nvram – Last Sector of flash – 64 K Application Image – image. bin Boot Loader - rom. bin First Sector of Flash – 64 K

Boot loader Does the same BSP Initialization Reset POST fail Errormessage pass Valid Image in FLASH? boot, using DHCP & TFTP no yes valid DHCPrequest no reply after 5 retries Errormessage wait for reply failure TFTP download unzip code to RAM update? zip code to FLASH yes no transfer control to downloaded / unziped code in RAM