Echelon FTXL - Manual (Page 111)

FTXL User’s Guide 99
File Directory
The LonTalk Interface Developer utility produces a configurable file directory
structure, which supports:
• Using named or unnamed files (the DMF framework uses unnamed files
by default, whereas FTP uses named files)
• Up to 64 KB of data for each file
• For the DMF framework: Up to a total of 64 KB for all files plus the file
directory itself
• For FTP: unlimited size
The utility initializes the file directory depending on the chosen access method.
The directory can be used with an FTP server implementation or the file access
host memory window implementation. The initialization that the utility provides
works for both little-endian and big-endian host processors.
The FtxlDev.h header file allows you to customize the file directory structure, if
needed.
Shutting Down the FTXL Device
To perform an orderly shutdown of an FTXL device, your application can call the
LonExit() API function. The implementation of this function is generated by the
LonTalk Interface Developer utility, and is included in the FtxlDev.c file. This
function calls the LonLidDestroyStack() API function to stop the FTXL LonTalk
protocol stack and free its resources. In addition, the LonExit() function can
perform any clean-up for the application, such as deleting operating system
events and other resources.
After your application calls the LonExit() function, it can call the LonInit()
function again. However, if you want to change the FTXL LonTalk protocol
stack’s interface, you must reboot the device.