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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-',
)
if family == 'cortex-m4f':
family = 'cortex-m4'
has_mcu = True
else:
has_mcu = False
env.Replace(
CC = '${TOOLCHAIN}gcc',
CXX = '${TOOLCHAIN}g++',
AS = '${TOOLCHAIN}gcc',
LINK = '${TOOLCHAIN}gcc',
AR = '${TOOLCHAIN}ar',
RANLIB = '${TOOLCHAIN}ranlib',
CCFLAGS = Split('-O2 -Wall -ggdb -mcpu=${CPU_FAMILY} -mthumb -ffunction-sections'),
CXXFLAGS = Split('-std=gnu++11 -fno-exceptions -fno-rtti -Wno-pmf-conversions'),
ASFLAGS = Split('-c -x assembler-with-cpp -mcpu=${CPU_FAMILY} -mthumb'),
LINKFLAGS = Split('-Wall -mcpu=${CPU_FAMILY} -mthumb -nostartfiles -Wl,-T${LINK_SCRIPT} -Wl,--gc-sections'),
CPPPATH = [laks_dir],
LIBPATH = [ld_dir],
LIB_SOURCES = [],
CPU_FAMILY = family,
)
if has_mcu:
env.Append(CCFLAGS = Split('-mfloat-abi=hard -mfpu=fpv4-sp-d16'))
env.Append(LINKFLAGS = Split('-mfloat-abi=hard -mfpu=fpv4-sp-d16'))
env.Append(CPPDEFINES = ['HAS_FPU'])
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 == 'f303':
select_arm(env, 'cortex-m4f')
env.Append(CPPDEFINES = ['STM32F3'])
env['LINK_SCRIPT'] = {
'b': 'stm32_f303_b.ld',
'c': 'stm32_f303_c.ld',
}[flash]
elif family == 'f373':
select_arm(env, 'cortex-m4f')
env.Append(CPPDEFINES = ['STM32F3'])
env['LINK_SCRIPT'] = {
'8': 'stm32_f373_8.ld',
'b': 'stm32_f373_b.ld',
'c': 'stm32_f373_c.ld',
}[flash]
elif family in ('f401'):
select_arm(env, 'cortex-m4f')
env.Append(CPPDEFINES = ['STM32F4'])
env['LINK_SCRIPT'] = {
'e': 'stm32_f401_e.ld',
}[flash]
elif family in ('f405', 'f407'):
select_arm(env, 'cortex-m4f')
env.Append(CPPDEFINES = ['STM32F4'])
env['LINK_SCRIPT'] = {
'e': 'stm32_f4_e.ld',
'g': 'stm32_f4_g.ld',
}[flash]
elif family in ('l051', 'l052', 'l053'):
select_arm(env, 'cortex-m0plus')
env.Append(CPPDEFINES = ['STM32L0'])
env['LINK_SCRIPT'] = {
'8': 'stm32_l0_8.ld',
}[flash]
elif family == 'wb55':
select_arm(env, 'cortex-m4f')
env.Append(CPPDEFINES = ['STM32WB'])
env['LINK_SCRIPT'] = {
'g': 'stm32_wb_g.ld',
}[flash]
else:
print 'Unknown stm32 family: %s' % family
Exit(1)
def select_nrf(env, variant):
if variant == 'nrf52840':
select_arm(env, 'cortex-m4f')
env.Append(CPPDEFINES = ['NRF52840'])
env['LINK_SCRIPT'] = 'nrf52840.ld'
def SelectMCU(env, mcu, variant_dir = None):
mcu = mcu.lower()
if mcu.startswith('stm32'):
select_stm32(env, mcu)
elif mcu.startswith('nrf'):
select_nrf(env, mcu)
else:
print 'Unknown MCU: %s' % mcu
Exit(1)
SConscript(main_sconscript, variant_dir = variant_dir, exports = 'env')
AddMethod(Environment, SelectMCU)
def Firmware(env, target, sources, **kwargs):
objects = [env.Object(f) for f in Flatten([sources, env['LIB_SOURCES']])]
firmware = env.Program(target, objects, **kwargs)
#env.Depends(firmware, env['LINK_SCRIPT']) # TODO
return firmware
AddMethod(Environment, Firmware)
# vim: syn=python
|
