RL-ARM User's Guide
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RL-ARM User's Guide

Flash Memory Management

Memory Organization

File Allocation Information

File Data Blocks

Configuring Flash File System

Sector Memory Map

Converting FlashDev.c

Program and Erase Code

Converting FlashPrg.c

SPI Flash Device

FS_SPI_FlashDev.h

Programming Code

FS_SPI_FlashPrg.c

Memory Card Device

File Time Support

System Configuration

Using Flash File System

Using Flash Devices

Using Dedicated Flash Devices

Using One Large Flash Device

Using Internal Flash Devices

Using RAM Devices

RAM Configuration Example

Using Memory Card Devices

Root Directory Limitation

Function Overview

File I/O Routines

File Maintenance Routines

File Time Support Routines

Low-Level Routines

SPI Interface Routines

System Functions

Example Programs

Library Reference

Using Flash Devices

Three different configuration files are used when the RL-FlashFS is configured to store files to a Flash device. These files must be copied to your project directory and added to your project to make a RL-FlashFS configuration.

File_Config.c - a general configuration file,
FS_FlashPrg.c - Flash Programming algorithm routines,
FS_FlashDev.h - Flash Device Sector layout description.

When the RL-FlashFS is used for the first time, the file storage device need to be formatted. The NV devices like Flash Devices, EEPROMS, or ZEROPOWER RAMs, need to be formatted only once when the system is started for the first time. A standard RAM must be formatted every time the system is started.