— eCos Support for the SAMA5D3 Xplained platform
The SAMA5D3-XPLD board consists of an ATSAMA5D36 Cortex-A5 microcontroller, 128kiB of SRAM, 256MiB of RAM and 256MiB of NAND flash. It has connectors for Ethernet, LCD, USB and other expansion boards as well as an SD card slot.
For typical eCos development it is expected
ROMRAM startup type applications will be
downloaded and debugged via a hardware debugger (JTAG) attached to
J24. Use of a hardware debugging
interface avoids the requirement for a debug monitor application to be
present on the platform. However, if required, a RedBoot image can be
programmed into the onboard NAND flash to provide an interactive
bootloader environment. When using a GDB stubs monitor it is then
possible to download and debug eCos
applications via the gdb debugger over USB (using the TTL debug
channel) or Ethernet.
options for the SAMA5D3x parts are documented in the CPU variant
documentation. How the CPU boots depends on the BMS signal. The
SAMA5D3 Xplained has a Pull-Up on the CPU BMS pin so will default
BMS_BIT=0, resulting in the RomBOOT, on-chip,
first-level boot loader being executed.
The Atmel SAMA5D3 Xplained is pre-installed with example application
software. The board is supplied with jumper
The board port is intended to work with GNU tools configured for an arm-eabi target. The original port was done using arm-eabi-gcc version 4.7.3e, arm-eabi-gdb version 7.6.1, and binutils version 2.23.2.
|2021-09-02||eCosPro Non-Commercial Public License|