The xfa.ld script is incompatible with binutils > 2.35.2 and results
in firmwares that wont boot. Sadly, I couldn't figure out an elegant
way to fix the issue. Instead, I modified the linker script provided
by binutils to also include XFA.
core_panic() doesn't expect the message to be in program memory, but
in data memory. Bad things will happen on AVR when the address is
interpreted as being in data address space, but the allocation is
done in program address space.
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 current xmega don't have a way to disable peripherals that are
not in used. Add peripheral management to allow enable only the mcu
blocks that will be used by application. This saves power on active
and sleep modes. By default, at clock initialization, all peripherals
are now disabled and each drive must activate at initialization phase.
The periph_timer and periph_uart were updated with this new feature.
Signed-off-by: Gerson Fernando Budke <nandojve@gmail.com>
The current ATxmega clock_init enable DFLL to improve the accuracy of
the 2MHz and 32MHz internal oscillators. In some ATxmega revisions,
after started DFLL the clock become unstable. Add another sync point
for 32MHz internal oscilator.
Note: If clock is not stable, system won't switch from 2MHz to 32MHz
as main clock.
Signed-off-by: Gerson Fernando Budke <nandojve@gmail.com>
Current there is no way to split code between ATmega and ATxmega in
drivers. This differentiate AVR8 cores into MEGAs and XMEGAs.
Signed-off-by: Gerson Fernando Budke <nandojve@gmail.com>
Add ATxmega common files and cpu definitions.
This works was originally developed by @Josar. The 2018 version
were port to 2021 mainline.
This version changes original port to have only the atxmega CPU
definition. With that, all family can be accomodated.
Signed-off-by: Gerson Fernando Budke <nandojve@gmail.com>
