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|
laks_dir = Dir('.')
ld_dir = Dir('ld_scripts')
main_sconscript = File('SConscript')
def select_arm(env, family):
env.SetDefault(
TOOLCHAIN = 'arm-none-eabi-',
)
env.Replace(
CC = '${TOOLCHAIN}gcc',
CXX = '${TOOLCHAIN}g++',
AS = '${TOOLCHAIN}gcc',
LINK = '${TOOLCHAIN}gcc',
AR = '${TOOLCHAIN}ar',
RANLIB = '${TOOLCHAIN}ranlib',
CCFLAGS = '-O2 -Wall -ggdb -mcpu=${CPU_FAMILY} -mthumb -ffunction-sections',
CXXFLAGS = '-fno-exceptions -fno-rtti -Wno-pmf-conversions',
ASFLAGS = '-c -x assembler-with-cpp -mcpu=${CPU_FAMILY} -mthumb',
LINKFLAGS = '-Wall -mcpu=${CPU_FAMILY} -mthumb -mhard-float -nostartfiles -Wl,-T${LINK_SCRIPT}', # -Wl,--gc-sections
CPPPATH = [laks_dir],
LIBPATH = [ld_dir],
LIB_SOURCES = [],
CPU_FAMILY = family,
)
if family == 'cortex-m4':
env.Append(CCFLAGS = ' -mhard-float')
def select_stm32(env, variant):
family = variant[5:9]
pin_count = variant[9]
flash = variant[10]
if family == 'f103':
select_arm(env, 'cortex-m3')
env.Append(CPPDEFINES = ['STM32F1'])
env['LINK_SCRIPT'] = {
'8': 'stm32_f1_8.ld',
'b': 'stm32_f1_b.ld',
}[flash]
elif family in ('f405', 'f407'):
select_arm(env, 'cortex-m4')
env.Append(CPPDEFINES = ['STM32F4'])
env['LINK_SCRIPT'] = {
'e': 'stm32_f4_e.ld',
'g': 'stm32_f4_g.ld',
}[flash]
else:
print 'Unknown stm32 family: %s' % mcu
Exit(1)
def SelectMCU(env, mcu):
mcu = mcu.lower()
if mcu.startswith('stm32'):
select_stm32(env, mcu)
else:
print 'Unknown MCU: %s' % mcu
Exit(1)
SConscript(main_sconscript, exports = 'env')
AddMethod(Environment, SelectMCU)
def Firmware(env, target, sources):
firmware = env.Program(target, [sources, env['LIB_SOURCES']])
#env.Depends(firmware, env['LINK_SCRIPT']) # TODO
return firmware
AddMethod(Environment, Firmware)
|
