Open Source FAT File System, M3S-TFAT-Tiny (TFAT) is a FAT file system that only requires a small amount of memory. It is suitable for use in applications such as single-function home appliances and compact industrial equipment where the incorporation of more sophisticated functionality or the newest technology, with a negligible increase in cost, is desired. To support such development activities, Renesas offers software libraries with only the essential features for the application, at low cost.
Use TFAT in any device incorporating a target microcontroller for functions such as accumulating measured or archived data, or rewriting a stored program via memory card. Although TFAT is a FAT file system, and PC data exchange capability enable analysis and management of data by a PC application.
Components
File system software (binary format library)
Sample program that supports Renesas integrated development environment
Library function user's manual and other documents in a complete set
Image
Module Configuration
Features
Compact design tailored for embedded systems
Realizable using the internal memory of the microcontroller
Approx. ROM 12.7KB Approx. RAM 4byte and the stack approx 200-byte
OS is unnecessary
The supplied sample programs include sample software for reading/writing files to MultiMediaCard on the CPU board which comes with the Renesas Starter Kit.
It also allows you to read/write files to an SD Memory Card and USB Flash drive.
Note: The functions need to be created on the customer side as suitable for the hardware used. The TFAT library is not designed for use with a specific piece of hardware and therefore does not include these functions (drivers).
Operating Environment
Target Device
RL78 Family
IDE
CS+ for CC V3.01.00 CS+ for CA,CX V3.01.00
IAR Embedded Workbench for RL78 Family provided by IAR Systems V.2.10.1
Applicable Compiler
RL78 compiler CA78K0R V1.70 or later RL78 compiler CC-RL V1.01 or later
IAR Embedded Workbench for Renesas RL78 V.2.10.1 or later
Occupied ROM Size
Approx. 12.7KB
Occupied RAM Size
Approx. 0.2KB *including the stack
Purpose
Examples of application field:
Data preservation and data logging in various types of equipment
Preservation of number of revolutions, temperature and other data in industrial equipment
Preservation of a history of operations and settings alteration for remote equipment failure diagnostic
Preservation of personal information in health equipment and similar other equipment used individually
Preservation of heart rate and blood pressure data in health equipment
Preservation of physical exercise data in training equipment
Updating of programs and data in various types of equipment
Flash memory rewriting with programs or data stored in a memory card in places where equipment is installed
