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RL-ARM User's Guide (MDK v4)

RL-RTX RL-FlashFS RL-TCPnet TCP Socket Opening TCP Connection TCP Active Open TCP Passive Open Sending TCP Data Example for Sending Data Multiple TCP Connections UDP Socket Opening UDP Connection Sending UDP Data When DHCP Enabled When ARP Cache Empty Example for Sending Data IP Multicasting Multiple UDP Connections Configuring RL-TCPnet Static Configuration System Definitions Ethernet Network Interface PPP Network Interface SLIP Network Interface UDP Socket TCP Socket BSD Socket HTTP Server Telnet Server TFTP Server TFTP Client FTP Server FTP Client DNS Client SMTP Client SNMP Agent SNTP Client Error Function Runtime Configuration Library Files Using RL-TCPnet Stand Alone With RTX Kernel Event Driven Operation IP Address Assignment Ethernet Interface PPP Interface SLIP Interface Localhost Applications HTTP Server Script Language CGI Functions Ajax Support Using XML XML Example How it works SOAP Support SOAP Interface Large POST Messages Web Pages Default Page Error Pages Web on SD Card Web Update File System Interface Http Caching How it works Internal Web External Web Multi-user Authentication Using RAM File System FCARM File Converter PRINT Directive NOPRINT Directive PAGEWIDTH Directive PAGELENGTH Directive ROOT Directive Telnet Server Command Line Interface Multi-user Authentication Sending Reply Message Short Reply Long Reply Continuous Screen Update TFTP Server File System Interface TFTP Client File System Interface FTP Server File System Interface Multi-user Authentication Supported Commands FTP Client File System Interface SMTP Client SNMP Agent MIB Database MIB Interface MIB Entry MIB Table DNS Resolver Starting DNS Device Drivers Ethernet Driver Interrupt Mode Modem Driver Serial Driver Using Serial Link Cable Connection Modem Connection Windows Dial-up Add Direct Serial Link New Dial-up Connection Configure PPP Dial-up Configure SLIP Dial-up Debugging Enabling Debug Debug Level Redirecting Output Function Overview BSD Routines CGI Routines Ethernet Routines FTP Routines HTTP Routines IGMP Routines Miscellaneous Routines Modem Routines PPP Routines Serial Routines SLIP Routines SMTP Routines SNMP Routines System Functions TCP Routines Telnet Routines TFTP Routines UDP Routines RL-CAN RL-USB Example Programs Library Reference Appendix

Using RL-TCPnet

RL-TCPnet is designed as a stand alone TCP/IP Operating System and does not require an RTOS kernel to run.

RL-TCPnet has integrated applications such as WEB Server, Telnet Server, and TFTP Server. Web pages are stored in a simple ROM file system integrated into the RL-TCPnet, so RL-FlashFS is not required. For an application where only the Web configuration is needed, the RTOS kernel and the RL-FlashFS can both be omitted, and thus the code size of the application can be reduced.

You can also use RL-TCPnet together with the RTX kernel. In this case, the basic framework is setup a little differently.

Several network interfaces are also supported. The most popular is the ethernet network interface. However, sometimes the ethernet is not available, and it is necessary to dial a remote Internet Service Provider to use the Internet.

RL-TCPnet has integrated support for the serial links with the implemented serial protocols PPP and SLIP. It also supports modem device drivers with integrated default drivers for Standard Modems and a direct serial Cable Connection.

RL-TCPnet supports also a localhost, a virtual loopback interface. Using the loopback interface is useful for testing software, since it bypasses local network interface hardware.

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