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Adds a few drivers including an LCD driver
Signed-off-by: Keith Packard <keithp@keithp.com>
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This completes the basic task of making an AVR version of altos by
getting the Teensy 'avr-demo' program to build.
Signed-off-by: Keith Packard <keithp@keithp.com>
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More arch-indepdency bits.
GCC stdio is different from SDCC, so create suitable code in
avr/ao_avr_stdio.c
Create macros to initialize the task stack frame and save the task
context.
Add GCC/SDCC type definition compatibility macros
Signed-off-by: Keith Packard <keithp@keithp.com>
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Start pulling changes needed for avr port; architecture-specific code
will live in <architcture>/ao_arch.h. This first change defines
the ao_arch_reboot macro to reboot the microcontroller.
Signed-off-by: Keith Packard <keithp@keithp.com>
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