Introduction

This documents data structures, functions, variables, defines, enums, and typedefs in the software. It also gives an example of the usage of the FAT filesystem through the dataflash memory AT45DBX & SPI driver.

The example lets you issue the following commands on RS232 using POSIX interfaces (open, read, write, close):

read a file from the memory files system;
concatenate a file to an existing one;
copy the content of a file to a new one.

Note: This example assumes that the dataflash memory contains a file in the root directory (and of course that the memory filesystem is a FAT12/16/32).

Main Files

file.c : functions for file accesses
file.h : headers for file accesses
fat.c : functions for FAT accesses
fat.h : headers for FAT accesses
fat_unusual.c : add-ons functions for FAT accesses
fs_com.h : structures and defines for file system accesses
navigation.c : functions for navigators accesses
navigation.h : headers for navigators accesses
fsaccess.c : functions for POSIX interfaces
fsaccess.h : headers for POSIX interfaces
ctrl_access.c : functions for memory control access interfaces
ctrl_access.h : headers for memory control access interfaces
fsaccess_example.c : FAT example

Compilation Info

This software was written for the GNU GCC for AVR32 and IAR Systems compiler for AVR32. Other compilers may or may not work.

Device Info

All AVR32 devices with an SPI module can be used. This example has been tested with the following setup:

EVK1100, EVK1101 or EVK1105 evaluation kit

Setup Information

CPU speed: 12 MHz

Connect USART1 (on EVK1100 or EVK1101) to a PC serial port via a standard RS232 DB9 cable, or USART0 (on EVK1105) abstracted with a USB CDC connection to a PC.
Set the following settings in your terminal of choice: 57600 8N1

Contact Information

For further information, visit Atmel AVR32.