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RL-ARM User's Guide
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 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 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 Error Function 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 AppendixFile System Interface
The Embedded Web Server can read files also from a generic File System. All interface functions are located in HTTP_uif.c, which is a user interface module. This module is in the \Keil\ARM\RL\TCPnet\User folder. For large Web resources, you must copy it to your project directory and add it to your project.
The HTTP_uif.c module is preconfigured for RL-FlashFS, so no modifications are required. You can modify this interface module to use another type of file system or to use a different storage media such as a hard disk.
The following functions are implemented in this module:
- http_fopen() - open a file for reading.
- http_fclose() - close a file that was previously opened.
- http_fread() - read a block of data from a file to data buffer.
- http_fgets() - read a string from a file to data buffer.
- http_finfo() - read last modification time of a file.
The following system functions are included in the RL-TCPnet library:
- http_date() - convert the RL date format to UTC time format.
- When a complete Web site is stored internally in the code, you should not include the HTTP_uif.c module into the project to reduce the code size of the image.
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