Due to the lack of new official avr-libc releases (which includes the
vendor header files needed to support different version of MCUs),
support for new MCUs was lacking. Distributions such as Debian addressed
this by extending the upstream code with vendor header files directly
obtained from Atmel / Microchip, but without paying attention to
details. As such, a naming inconsistency (ASIZE vs ASPACE) between
officially supported MCUs and new MCUs was introduced.
Now that avr-libc 2.1.0 is officially released, hardware support for new
MCUs is provided by upstream out of the box and only ASIZE is used as
name. This commit adds a bit of glue code to create aliases for ASIZE on
older avr-libc versions where needed. This fixes compilation with the
new avr-libc release and results in more consistent code.
Enable EBI (External Bus Interface) and configure LPC SRAM memory. This
set RIOT-OS to use up to 64k external data SRAM.
Signed-off-by: Gerson Fernando Budke <nandojve@gmail.com>
Introduce XMEGA EBI driver. This enable EBI for use with all memory
supported by the device and peripherals. It include support to SRAM,
SDRAM, LCDs or any other external bus access.
Note: This feature only works for A1/A1U series, which are, the series
with EBI hardware.
Signed-off-by: Gerson Fernando Budke <nandojve@gmail.com>
Update features definitions and configurations. Now atxmega define
features that only are full available on all variations and do not
require any definition at periph_conf.h file.
Signed-off-by: Gerson Fernando Budke <nandojve@gmail.com>
The periph_pm requires new field to control the power management
feature. Add missing config at periph_conf for timers and uart.
Signed-off-by: Gerson Fernando Budke <nandojve@gmail.com>
