Add first example project (framework) using libopenstm32.

This is intended as a small blink example for the Olimex STM32-H103 board.
It doesn't do anything useful (yet), but it builds fine.

There's a sample Makefile and a preliminary ld script (which probably
needs some more work).

example/Makefile

@@ -0,0 +1,42 @@
+##
+## This file is part of the libopenstm32 project.
+##
+## Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
+##
+## This program is free software; you can redistribute it and/or modify
+## it under the terms of the GNU General Public License as published by
+## the Free Software Foundation; either version 2 of the License, or
+## (at your option) any later version.
+##
+## This program is distributed in the hope that it will be useful,
+## but WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+## GNU General Public License for more details.
+##
+## You should have received a copy of the GNU General Public License
+## along with this program; if not, write to the Free Software
+## Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+##
+
+BINARY		= blink
+
+# PREFIX	?= arm-none-eabi
+PREFIX		?= arm-elf
+CC		= $(PREFIX)-gcc
+LD		= $(PREFIX)-ld
+CFLAGS		= -Os -g -Wall -Wextra -I../include -fno-common \
+		  -mcpu=cortex-m3 -mthumb
+LDFLAGS		= -L../lib -T$(BINARY).ld -nostartfiles
+OBJS		= $(BINARY).o
+
+all: $(BINARY)
+
+$(BINARY): $(OBJS) $(BINARY).ld
+	$(LD) $(LDFLAGS) -o $(BINARY) $(OBJS) -lopenstm32
+
+$(BINARY).o: $(BINARY).c
+	$(CC) $(CFLAGS) -c $(BINARY).c
+
+clean:
+	rm -f *.o $(BINARY)
+

example/blink.c

@@ -0,0 +1,27 @@
+/*
+ * This file is part of the libopenstm32 project.
+ *
+ * Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+ */
+
+#include <libopenstm32.h>
+
+int main(void)
+{
+	/* TODO */
+	return 0;
+}

example/blink.ld

@@ -0,0 +1,57 @@
+/*
+ * This file is part of the libopenstm32 project.
+ *
+ * Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+ */
+
+/* Linker script for Olimex STM32-H103 (STM32F103RBT6, 128K flash, 20K RAM). */
+
+/* Define memory regions. */
+MEMORY
+{
+	rom (rx) : ORIGIN = 0x00000000, LENGTH = 128K
+	ram (rwx) : ORIGIN = 0x20000000, LENGTH = 20K
+}
+
+/* Define sections. */
+SECTIONS
+{
+	. = ORIGIN(rom);
+
+	.text : {
+		*(.text)	/* Program code */
+		*(.rodata)	/* Read-only data */
+	} >rom
+
+	. = ORIGIN(ram);
+
+	.data : {
+		*(.data)	/* Read-write initialized data */
+	} >ram AT >rom
+
+	.bss : {
+		*(.bss)		/* Read-write zero initialized data */
+	} >ram AT >rom
+
+	/* Discard useless sections. */
+	/DISCARD/ : {
+		*(.comment)
+		*(.comment.*)
+		*(.note)
+		*(.note.*)
+	}
+}

lib/Makefile

@@ -18,6 +18,8 @@
 ## Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
 ##
 
+LIBNAME		= libopenstm32
+
 # PREFIX	?= arm-none-eabi
 PREFIX		?= arm-elf
 CC		= $(PREFIX)-gcc
@@ -25,7 +27,6 @@ AR		= $(PREFIX)-ar
 CFLAGS		= -Os -g -Wall -Wextra -I../include -fno-common \
 		  -mcpu=cortex-m3 -mthumb
 ARFLAGS		= rcsv
-LIBNAME		= libopenstm32
 OBJS		= gpio.o
 
 all: $(LIBNAME).a