CrossStudio's New Project Wizard simplifies the creation of projects for the ATMEL EB55 by creating a project with the appropriate project settings, memory map files and startup files. See Creating a New Project for more information on creating projects.
CrossStudio for ARM supports the ATMEL EB55 running applications from both RAM and FLASH.
Warning: Downloading to FLASH on the EB55 can erase part of the EB55 firmware. See Restoring EB55 Firmware for details of how CrossStudio can be used to restore the EB55's firmware.
The following sections describe the ATMEL EB55 support in more detail. See ARM Target Support for more information.
The default memory map file $(StudioDir)/targets/ATMEL_EB55/ATMEL_EB55_MemoryMap.xml has been provided. This file is used to describe the memory layout of the target and is used for linking and debugging. The placement of program sections within the memory map for both RAM and FLASH configurations is described by the non-target-specific default memory maps $(StudioDir)/targets/flash_placement.xml and $(StudioDir)/targets/sram_placement.xml.
The memory segment layout for both configurations is the same and is described in the following table:
Type | Description | Start Address | End Address |
RAM | External RAM | 0x02000000 | 0x0203FFFF |
FLASH | External FLASH | 0x01000000 | 0x011FFFFF |
RAM | Internal RAM | 0x00000000 | 0x00001FFF |
The default startup code is in $(StudioDir)/targets/ATMEL_EB55/ATMEL_EB55_Startup.s. It contains the exception vectors and the default exception handlers. The FLASH version of the code (specified by defining __FLASH_BUILD) is also responsible for configuring memory to match the above memory map and copying the exception vectors into RAM.
The FLASH memory on the EB55 is split into standard boot and user sections. The jumper JP1 controls which half of the FLASH memory is visible first in the address map. If the JP1 jumper has been set to SDT rather than USER or the application being downloaded is larger than 0x100000 bytes the EB55's firmware will be overwritten. This is reversible as CrossStudio can be used to re-program the firmware image into FLASH.