double我遇到了一些问题！通过终端有一些查询，我应该给一些数字（例如每小时延迟多少）。如果我通过终端给出一个如1.1小时的数字那么它打印约-1173000！它应该只打印1.1。
我想，也许FreeRTOS的Makefile存在问题。 （因为它不能通过FreeRTOS编译到STM32F407处理器！）
我相信这条线上的东西应该修好！
CPU = -mcpu=cortex-m4 -mthumb -mfloat-abi=softfp -mfpu=fpv4-sp-d16
以下是Makefile的完整代码：
# Optimization level, can be [0, 1, 2, 3, s].
# 0 = turn off optimization. s = optimize for size.
#
OPT = 0
# Object files directory
# Warning: this will be removed by make clean!
#
OBJDIR = obj
# Target file name (without extension)
#TARGET = $(OBJDIR)/main
TARGET = $(OBJDIR)/STM32F4_Test
# Define all C source files (dependencies are generated automatically)
#
SOURCES += src/uart.c
SOURCES += src/ustime.c
SOURCES += src/main.c
SOURCES += src/startup_stm32f4xx.S
SOURCES += src/system_stm32f4xx.c
SOURCES += src/syscalls.c
SOURCES += src/modbus.c
SOURCES += src/test.c
SOURCES += src/get.c
SOURCES += src/heap_2.c
SOURCES += FreeRTOS/Source/tasks.c
SOURCES += FreeRTOS/Source/queue.c
SOURCES += FreeRTOS/Source/list.c
SOURCES += FreeRTOS/Source/croutine.c
SOURCES += FreeRTOS/Source/portable/GCC/ARM_CM4F/port.c
SOURCES += libs/STM32F4xx_StdPeriph_Driver/src/misc.c
SOURCES += libs/STM32F4xx_StdPeriph_Driver/src/stm32f4xx_adc.c
SOURCES += libs/STM32F4xx_StdPeriph_Driver/src/stm32f4xx_can.c
SOURCES += libs/STM32F4xx_StdPeriph_Driver/src/stm32f4xx_crc.c
SOURCES += libs/STM32F4xx_StdPeriph_Driver/src/stm32f4xx_cryp.c
SOURCES += libs/STM32F4xx_StdPeriph_Driver/src/stm32f4xx_cryp_aes.c
SOURCES += libs/STM32F4xx_StdPeriph_Driver/src/stm32f4xx_cryp_des.c
SOURCES += libs/STM32F4xx_StdPeriph_Driver/src/stm32f4xx_cryp_tdes.c
SOURCES += libs/STM32F4xx_StdPeriph_Driver/src/stm32f4xx_dac.c
SOURCES += libs/STM32F4xx_StdPeriph_Driver/src/stm32f4xx_dbgmcu.c
SOURCES += libs/STM32F4xx_StdPeriph_Driver/src/stm32f4xx_dcmi.c
SOURCES += libs/STM32F4xx_StdPeriph_Driver/src/stm32f4xx_dma.c
SOURCES += libs/STM32F4xx_StdPeriph_Driver/src/stm32f4xx_exti.c
SOURCES += libs/STM32F4xx_StdPeriph_Driver/src/stm32f4xx_flash.c
SOURCES += libs/STM32F4xx_StdPeriph_Driver/src/stm32f4xx_fsmc.c
SOURCES += libs/STM32F4xx_StdPeriph_Driver/src/stm32f4xx_gpio.c
SOURCES += libs/STM32F4xx_StdPeriph_Driver/src/stm32f4xx_hash.c
SOURCES += libs/STM32F4xx_StdPeriph_Driver/src/stm32f4xx_hash_md5.c
SOURCES += libs/STM32F4xx_StdPeriph_Driver/src/stm32f4xx_hash_sha1.c
SOURCES += libs/STM32F4xx_StdPeriph_Driver/src/stm32f4xx_i2c.c
SOURCES += libs/STM32F4xx_StdPeriph_Driver/src/stm32f4xx_iwdg.c
SOURCES += libs/STM32F4xx_StdPeriph_Driver/src/stm32f4xx_pwr.c
SOURCES += libs/STM32F4xx_StdPeriph_Driver/src/stm32f4xx_rcc.c
SOURCES += libs/STM32F4xx_StdPeriph_Driver/src/stm32f4xx_rng.c
SOURCES += libs/STM32F4xx_StdPeriph_Driver/src/stm32f4xx_rtc.c
SOURCES += libs/STM32F4xx_StdPeriph_Driver/src/stm32f4xx_sdio.c
SOURCES += libs/STM32F4xx_StdPeriph_Driver/src/stm32f4xx_spi.c
SOURCES += libs/STM32F4xx_StdPeriph_Driver/src/stm32f4xx_syscfg.c
SOURCES += libs/STM32F4xx_StdPeriph_Driver/src/stm32f4xx_tim.c
SOURCES += libs/STM32F4xx_StdPeriph_Driver/src/stm32f4xx_usart.c
SOURCES += libs/STM32F4xx_StdPeriph_Driver/src/stm32f4xx_wwdg.c
OBJECTS = $(addprefix $(OBJDIR)/,$(addsuffix .o,$(basename $(SOURCES))))
# Place -D, -U or -I options here for C and C++ sources
CPPFLAGS += -Isrc
CPPFLAGS += -IFreeRTOS/Source/include
CPPFLAGS += -Ilibs/CMSIS/Include
CPPFLAGS += -Ilibs/Device/STM32F4xx/Include
CPPFLAGS += -Ilibs/STM32F4xx_StdPeriph_Driver/inc
#---------------- Compiler Options C ----------------
# -g*: generate debugging information
# -O*: optimization level
# -f...: tuning, see GCC documentation
# -Wall...: warning level
# -Wa,...: tell GCC to pass this to the assembler.
# -adhlns...: create assembler listing
CFLAGS = -O$(OPT)
CFLAGS += -std=gnu99
CFLAGS += -gdwarf-2
CFLAGS += -ffunction-sections
CFLAGS += -fdata-sections
CFLAGS += -Wall
#CFLAGS += -Wextra
#CFLAGS += -Wpointer-arith
#CFLAGS += -Wstrict-prototypes
#CFLAGS += -Winline
#CFLAGS += -Wunreachable-code
#CFLAGS += -Wundef
CFLAGS += -Wa,-adhlns=$(OBJDIR)/$(*F).lst
# Optimize use of the single-precision FPU
#
# CFLAGS += -fsingle-precision-constant
# This will not work without recompiling libs
#
# CFLAGS += -fshort-double
#---------------- Compiler Options C++ ----------------
#
CXXFLAGS = $(CFLAGS)
#---------------- Assembler Options ----------------
# -Wa,...: tell GCC to pass this to the assembler
# -adhlns: create listing
#
ASFLAGS = -Wa,-adhlns=$(OBJDIR)/$(*F).lst
#---------------- Linker Options ----------------
# -Wl,...: tell GCC to pass this to linker
# -Map: create map file
# --cref: add cross reference to map file
LDFLAGS += -lm
LDFLAGS += -Wl,-Map=$(TARGET).map,--cref
LDFLAGS += -Wl,--gc-sections
LDFLAGS += -Tsrc/stm32_flash.ld
#============================================================================
# Define programs and commands
TOOLCHAIN = d:/Programme/CodeSourcery/Sourcery_2011_09_ARM_EABI/bin/arm-none-eabi
CC = $(TOOLCHAIN)-gcc
OBJCOPY = $(TOOLCHAIN)-objcopy
OBJDUMP = $(TOOLCHAIN)-objdump
SIZE = $(TOOLCHAIN)-size
NM = $(TOOLCHAIN)-nm
OPENOCD = D:\Tools\openocd-0.7.0\bin\openocd-0.7.0.exe
DOXYGEN = doxygen
STLINK = tools/ST-LINK_CLI.exe
MKDIR = d:\tools\unxutils\bin\mkdir.exe
ifeq (AMD64, $(PROCESSOR_ARCHITEW6432))
SUBWCREV = tools/SubWCRev64.exe
else
SUBWCREV = tools/SubWCRev.exe
endif
# Compiler flags to generate dependency files
GENDEPFLAGS = -MMD -MP -MF $(OBJDIR)/$(*F).d
# Combine all necessary flags and optional flags
# Add target processor to flags.
#
#CPU = -mcpu=cortex-m3 -mthumb -mfloat-abi=soft
#CPU = -mcpu=cortex-m4 -mthumb
#
// kannst du mal nach dem problem suchen? Und dich ueber floating point probleme informieren?
// auf der ARM cpu oder spezielle dieser F407 cpu
CPU = -mcpu=cortex-m4 -mthumb -mfloat-abi=softfp -mfpu=fpv4-sp-d16
#CPU = -mcpu=cortex-m4 -mthumb
CFLAGS += $(CPU)
CXXFLAGS += $(CPU)
ASFLAGS += $(CPU)
LDFLAGS += $(CPU)
# Default target.
all: setup gccversion build showsize
setup:
$(MKDIR) -p $(OBJDIR)
$(MKDIR) -p $(OBJDIR)\src
$(MKDIR) -p $(OBJDIR)\FreeRTOS\Source
$(MKDIR) -p $(OBJDIR)\FreeRTOS\Source\portable\GCC\ARM_CM4F
$(MKDIR) -p $(OBJDIR)\libs\STM32F4xx_StdPeriph_Driver\src
build: elf hex lss sym bin
elf: $(TARGET).elf
hex: $(TARGET).hex
bin: $(TARGET).bin
lss: $(TARGET).lss
sym: $(TARGET).sym
doxygen:
@echo
@echo Creating Doxygen documentation
@$(DOXYGEN)
# Display compiler version information
gccversion:
@$(CC) --version
# Show the final program size
showsize: elf
@echo
@$(SIZE) $(TARGET).elf
# debug level
OOCD_CL=-d2
#OOCD_CL=-d3
# interface and board/target settings (using the OOCD target-library here)
## OOCD_CL+=-c "fast enable"
OOCD_CL+=-f interface/signalyzer.cfg -f openocd/stm32f4x.cfg
OOCD_CL+=-f openocd/config.cfg
OOCD_CL+=-c init -c targets
# commands to prepare flash-write
OOCD_CL+=-c "halt"
# flash-write and -verify
OOCD_CL+=-c "flash write_image erase $(TARGET).elf" -c "verify_image $(TARGET).elf"
# reset target
OOCD_CL+=-c "reset run"
# terminate OOCD after programming
# OOCD_CL+=-c shutdown
# Flash the device
flash: hex
# $(OPENOCD) -f "interface/signalyzer.cfg" -f "openocd/stm32f4x.cfg" -f "openocd/config.cfg" -c "flash_image $(TARGET).elf; shutdown"
$(OPENOCD) $(OOCD_CL)
# $(STLINK) -c SWD -P $(TARGET).hex -Run
# Target: clean project
clean:
@echo Cleaning project:
rm -rf $(OBJDIR)
rm -rf docs/html
# Create extended listing file from ELF output file
%.lss: %.elf
@echo
@echo Creating Extended Listing: $@
$(OBJDUMP) -h -S -z $< > $@
# Create a symbol table from ELF output file
%.sym: %.elf
@echo
@echo Creating Symbol Table: $@
$(NM) -n $< > $@
# Link: create ELF output file from object files
.SECONDARY: $(TARGET).elf
.PRECIOUS: $(OBJECTS)
$(TARGET).elf: $(OBJECTS)
@echo
@echo Linking: $@
$(CC) $^ $(LDFLAGS) --output $@
# Create final output files (.hex, .eep) from ELF output file.
%.hex: %.elf
@echo
@echo Creating hex file: $@
$(OBJCOPY) -O ihex $< $@
# Create bin file :
%.bin: %.elf
@echo
@echo Creating bin file: $@
$(OBJCOPY) -O binary $< $@
# Compile: create object files from C source files
$(OBJDIR)/%.o : %.c
@echo
@echo Compiling C: $<
$(CC) -c $(CPPFLAGS) $(CFLAGS) $(GENDEPFLAGS) $< -o $@
# Compile: create object files from C++ source files
$(OBJDIR)/%.o : %.cpp
@echo
@echo Compiling CPP: $<
$(CC) -c $(CPPFLAGS) $(CXXFLAGS) $(GENDEPFLAGS) $< -o $@
# Assemble: create object files from assembler source files
$(OBJDIR)/%.o : %.s
@echo
@echo Assembling: $<
$(CC) -c $(CPPFLAGS) $(ASFLAGS) $< -o $@
# Include the dependency files
-include $(wildcard $(OBJDIR)/*.d)
# Listing of phony targets
.PHONY: all build flash clean \
doxygen elf lss sym \
showsize gccversion \
build elf hex bin lss sym clean clean_list setup program
答案 0 :(得分：0)
我不相信Sourcery CodeBench 2011.09 ARM EABI编译器支持该配置。特别是，您的FPU设置似乎使用单精度，我很确定该工具链中包含的所有库都需要双精度FPU。
并不是编译器无法生成您要求的代码。问题是工具链不包含兼容的库。
我可能错了，FreeRTOS的人已经建立并捆绑了丢失的部分，但是怀疑不是。