It then runs in Firewall Support mode and uses the listening UDP port not only to receive requests, but also to send the answers to the clients.
The Enable Firewall Support switch enables or disables the TFTP server operation mode. The default TFTP server listening port is 69. Port Number specifies the listening TCP port number. You should increase this number if multiple TFTP clients must connect to the TFTP server at the same time. The default value is one, and this enables only one concurrent client connection. Number of TFTP Sessions specifies the number of available FTP sessions. The TFTP server configuration file Net_Config_TFTP_Server.h contains the following settings: You need to adapt the function to the application's needs. It is part of the file TFTP_Server_Access.c. tftp_server_fwrite - write a block of data from the TFTP data buffer to a file.įor access filtering the function tftp_accept_client is used. tftp_server_fread - read a block of data from a file to the TFTP data buffer. tftp_server_fclose - close a file that was previously opened. tftp_server_fopen - open a file for reading or writing. The following functions are implemented in this module: If you want to use another type of file system or to use a different storage media such as a hard disk, you need to add a similar file to your project. 
The file is preconfigured for the File System Component, so no modifications are required. In this case, the File System must present in the project.Īll File System interface functions are located in TFTP_Server_FS.c, which will be automatically added to your project's Network folder. The most common application is bootstrapping, although it can be used for other purposes.Ī TFTP Server can be used to upload HTTP Web pages or to download log files to a remote PC. It is used only when its simplicity is important, and its lack of features is acceptable. Due to its limitations, TFTP is a complement to the regular FTP and not a replacement. File delete, file move, and file rename are not supported. The TFTP protocol supports only file send and receive operations. TFTP servers allow connections from a TFTP Client for sending and receiving files. Trivial File Transfer Protocol (TFTP) is a simple protocol for exchanging files between two TCP/IP machines.
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