altos: add GCC/SDCC compat macros, init_stack, save_context and GCC stdio hooks

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>

1 files changed, 102 insertions, 0 deletions

diff --git a/src/avr-demo/Makefile b/src/avr-demo/Makefile
new file mode 100644
index 00000000..ea356654
--- /dev/null
+++ b/src/avr-demo/Makefile
@@ -0,0 +1,102 @@
+#
+# AltOS build
+#
+#
+vpath % ..:../core:../product:../driver
+vpath make-altitude ..
+vpath make-kalman ..
+vpath kalman.5c ../kalman
+vpath kalman_filter.5c ../kalman
+vpath load_csv.5c ../kalman
+vpath matrix.5c ../kalman
+vpath ao-make-product.5c ../util
+
+MCU=atmega32u4
+DUDECPUTYPE=m32u4
+#PROGRAMMER=stk500v2 -P usb
+PROGRAMMER=usbtiny
+LOADCMD=avrdude
+LOADARG=-p $(DUDECPUTYPE) -c $(PROGRAMMER) -e -U flash:w:
+CC=avr-gcc
+OBJCOPY=avr-objcopy
+
+ifndef VERSION
+include ../Version
+endif
+
+INC = \
+	ao.h \
+	ao_pins.h \
+	altitude.h \
+	ao_kalman.h
+
+#
+# Common AltOS sources
+#
+ALTOS_SRC = \
+	ao_cmd.c \
+	ao_mutex.c \
+	ao_panic.c \
+	ao_product.c \
+	ao_serial_avr.c \
+	ao_avr_stdio.c \
+	ao_stdio.c \
+	ao_task.c \
+	ao_timer.c \
+	ao_led.c
+
+PRODUCT=AvrDemo-v0.0
+MCU=atmega32u4
+PRODUCT_DEF=-DAVR_DEMO
+IDPRODUCT=0x000a
+CFLAGS = $(PRODUCT_DEF) -I. -I../avr -I../core -I..
+CFLAGS += -g -mmcu=$(MCU) -Wall -Wstrict-prototypes -Os -mcall-prologues
+
+NICKLE=nickle
+
+PROG=avr-demo
+
+SRC=$(ALTOS_SRC) ao_demo.c ao_debug_avr.c
+OBJ=$(SRC:.c=.o)
+
+V=0
+# The user has explicitly enabled quiet compilation.
+ifeq ($(V),0)
+quiet = @printf "  $1 $2 $@\n"; $($1)
+endif
+# Otherwise, print the full command line.
+quiet ?= $($1)
+
+all: $(PROG)
+
+$(PROG): Makefile $(OBJ)
+	$(call quiet,CC) $(LDFLAGS) $(CFLAGS) -o $(PROG) $(OBJ)
+
+$(PROG).hex: $(PROG)
+	avr-size $(PROG)
+	$(OBJCOPY) -R .eeprom -O ihex $(PROG) $@
+
+
+load: $(PROG).hex
+	$(LOADCMD) $(LOADARG)$(PROG).hex
+
+../altitude.h: make-altitude
+	nickle $< > $@
+
+ao_product.h: ao-make-product.5c ../Version
+	$(call quiet,NICKLE,$<) $< -m altusmetrum.org -i $(IDPRODUCT) -p $(PRODUCT) -v $(VERSION) > $@
+
+ao_product.rel: ao_product.c ao_product.h
+	$(call quiet,CC) -c $(CFLAGS) -D PRODUCT_DEFS='\"ao_product.h\"' -o$@ $<
+
+distclean:	clean
+
+clean:
+	rm -f $(OBJ)
+	rm -f ao_product.h
+
+install:
+
+uninstall:
+
+$(OBJ): ao.h ao_product.h
\ No newline at end of file