Using Flash Devices

Using Flash Device explains the steps to create applications for embedded Flash devices.

Include into the project and configure the following source files:

1. The library that matches the device core:
   FS_CM3.lib for Cortex-M devices.
   FS_ARM_L.lib for ARM7 or ARM9 devices.
2. The description files:
   FS_FlashDev.h containing the sector layout.
   FS_FlashPrg.c containing the Flash programming algorithm.
3. The configuration files:
   File_Config.c for configuring the device.
   Retarget.c for configuring the output.
4. The main file for initializing and connecting the Flash device.

   #include <RTL.h>
   #include "Em_File.h"
   
   int main (void)  {
     ...
     init_comm ();                               // initialize communication port
     init_file ();                               // initialize and format device
   
     while (1)  {
       ...                                       // add the code
     }
   }
   

Applications can be created using existing µVision projects as templates.

1. Copy all files from any folder \ARM\Boards\vendor\board\RL\FlashFS\EM_File to a new folder and open the project *.uvproj with µVision. RTX projects are using the RTX-RTOS. However, the configuration does not differ.
2. Open the file File_Config.c and configure the Flash device using the Configuration Wizard.
3. Enable Flash Drive and set the device characteristics.

   

4. Adapt the code in the files FS_FlashDev.h and FS_FlashPrg.c that contain the sector layout and Flash programming algorithms.
5. Modify the code to the application needs.

Note

• Configuration options are described in Flash Drive.