Differences

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--- sconsarduino [2010/05/24 01:30] – suapapa
+++ sconsarduino [2013/08/03 05:04] (current) – external edit 127.0.0.1
@@ Line 1: / Line 1: @@
+<code python>
+#
+# Copyright 2010 by Adam Mayer	 <adam@makerbot.com>
+#
+# 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 3 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, see <http://www.gnu.org/licenses/>
+#
+#
+# HOW TO USE THIS BUILD SCRIPT
+#
+# By default, this script will build the firmware for an atmega644p-based motherboard.
+# The firmware will be built, but not uploaded.
+#
+# To build for another platform, pass an explicit platform parameter.  For example,
+# $ scons platform=rrmbv12
+# $ scons platform=rrmbv22
+#
+# To upload the firmware, specify the "upload" target.  By default, this will use
+# /dev/ttyUSB0 as the serial connection.
+# $ scons upload
+#
+# If you want to select a port manually, specify it as a parameter:
+# $ scons port=/dev/ttyUSB3 upload
+#
+import os
+import re
+from os.path import dirname
+# Parameters
+platform = ARGUMENTS.get('platform','rrmbv12')
+f_cpu='16000000L'
+default_baud = '19200'
+mcu='atmega168'
+has_queue = 0
+has_psu = 0
+def extract_version(f):
+	regex = re.compile(r"const uint16_t firmware_version = ([0-9]+);")
+	for line in f.get_contents().split('\n'):
+		mo = regex.match(line)
+		if mo:
+			return int(mo.group(1))
+	return 0
+version = extract_version(File('#/src/Motherboard/Version.hh'))
+if (platform == 'rrmbv12'):
+	default_baud = '38400'
+	mcu='atmega644p'
+	has_queue = 1
+	has_psu = 1
+elif (platform == 'rrmbv22'):
+	default_baud = '57600'
+	mcu='atmega1280'
+	has_queue = 1
+	has_psu = 0
+else:
+	print "Platform "+platform+" is not currently supported.\n"
+	exit()
+target_name = "MB-"+platform+"-v"+str(version/100)+"."+str(version%100)
+upload_port = ARGUMENTS.get('port','/dev/ttyUSB0')
+upload_baud = ARGUMENTS.get('baud',default_baud)
+upload_prog = ARGUMENTS.get('programmer','stk500v1')
+srcs = Glob('*.cc') + Glob('lib_sd/*.c') + Glob('boards/%s/*.cc' % platform) + Glob('#/src/shared/*.cc')
+include_paths = ['#/src/shared', 'boards/%s' % platform, '.']
+flags=[
+	'-DF_CPU='+str(f_cpu),
+	'-mmcu='+mcu,
+	'-g',
+	'-Os',
+	'-w',
+	'-fno-exceptions',
+	'-ffunction-sections',
+	'-fdata-sections']
+if (os.environ.has_key('AVR_TOOLS_PATH')):
+	avr_tools_path = os.environ['AVR_TOOLS_PATH']
+else:
+	avr_tools_path = dirname(os.popen('/usr/bin/which avr-gcc').readlines()[0])
+env=Environment(CC=avr_tools_path+"/avr-g++",
+	CXX=avr_tools_path+"/avr-g++",
+	CPPPATH=include_paths,
+	CCFLAGS=flags)
+objs = env.Object(srcs)
+# run_alias = Alias('run', [program], program[0].path)
+# AlwaysBuild(run_alias)
+hex_name = target_name + '.hex'
+elf_name = target_name + '.elf'
+env.Append(BUILDERS={'Elf':Builder(action=avr_tools_path+"/avr-gcc -mmcu="+mcu+" -Os -Wl,--gc-sections -o $TARGET $SOURCES")})
+env.Append(BUILDERS={'Hex':Builder(action=avr_tools_path+"/avr-objcopy -O ihex -R .eeprom $SOURCES $TARGET")})
+env.Elf(elf_name, objs)
+env.Hex(hex_name, elf_name)
+avrdude = avr_tools_path+"/avrdude"
+avrdude_flags = "-V -F -p "+mcu.replace("atmega","m")
+avrdude_flags = avrdude_flags + " -P "+upload_port
+avrdude_flags = avrdude_flags + " -c "+upload_prog
+avrdude_flags = avrdude_flags + " -b "+upload_baud
+avrdude_command = " ".join([avrdude,avrdude_flags,"-U","flash:w:$SOURCES"])
+# env.Alias instead of just Alias because of
+# http://scons.tigris.org/issues/show_bug.cgi?id=2443
+upload_alias = env.Alias('upload', hex_name, avrdude_command)
+AlwaysBuild(upload_alias)
+</code>
 <code python>
 avr = Environment()
@@ Line 53: / Line 179: @@
 env['ARCH'] = 'avr'
 </code>
+====== section garbage collection ======
+<code>
+gcc -ffunction-sections -fdata-sections
+ld --gc-sections
+</code>
+  *[[http://kldp.org/node/94079|kldp 관련글]]
+  *[[http://lwn.net/Articles/249005|위 글에 링크된 글]]
 ====== vim setting ======
   *copy [[http://www.vim.org/scripts/script.php?script_id=2654|arduino.vim]] under ~/.vim/syntax/