工程文件链接如下:链接: https://pan.baidu.com/s/14KkjnKtBzukm6LSwO7CGvQ 提取码: qc63
目的:延时点亮LED灯
工作条件:
1、在Linux系统中,Makefile文件使用stmcubeMX软件导出的模板,只修改.c文件路径和.h文件路径这2部分;
2、移植使用官方的stm32固件库。
碰到的问题:
使用stmcubeMX软件导出的Makefile文件编译链接后,在在led.c文件中,Delay()函数中无法调用test()函数。led.c文件中相关代码如下:
void test(void)
{
for(int i=0;i<9333333;i++);
}
void Delay(void)
{
LedG14(ON);
test();
LedG14(OFF);
test();
}
在调试时,发现程序在执行 完 LedG14(ON);这条程序后,就跳过了 test();这条程序,直接执行 LedG14(OFF);了,下面的同样。
在链接的led.lst文件中,发现被调用的test()函数没有展开,led.lst文件的相关代码如下:
24:./User/led/led.c **** void Delay(void)
25:./User/led/led.c **** {
156 .loc 1 25 1 is_stmt 1 view -0
157 .cfi_startproc
158 @ args = 0, pretend = 0, frame = 0
159 @ frame_needed = 0, uses_anonymous_args = 0
160 0000 10B5 push {r4, lr}
161 .LCFI3:
162 .cfi_def_cfa_offset 8
163 .cfi_offset 4, -8
164 .cfi_offset 14, -4
26:./User/led/led.c **** LedG14(ON);
165 .loc 1 26 3 view .LVU28
166 0002 074C ldr r4, .L12
167 0004 0022 movs r2, #0
168 0006 4FF48041 mov r1, #16384
169 000a 2046 mov r0, r4
170 000c FFF7FEFF bl GPIO_WriteBit
171 .LVL8:
27:./User/led/led.c **** ** test();**
172 .loc 1 27 3 view .LVU29
28:./User/led/led.c **** LedG14(OFF);
173 .loc 1 28 3 view .LVU30
174 0010 0122 movs r2, #1
175 0012 4FF48041 mov r1, #16384
176 0016 2046 mov r0, r4
177 0018 FFF7FEFF bl GPIO_WriteBit
178 .LVL9:
29:./User/led/led.c **** ** test();**
179 .loc 1 29 3 view .LVU31
30:./User/led/led.c **** }
但是,使用stmcubeIDE软件移植固件库时,led.c不做修改,编译链接后,Delay()函数是可以调用test()函数的。
结论猜测:
通过对比stmcubeMX和stmcubeIDE这2个软件导出的Makefile文件分析,可以知道问题出现在stmcubeMX软件导出的Makefile文件哪里。但是,现在的问题是我不知道是什么原因导致这种问题的,问什么其它的函数可以调用展开,偏偏test()函数就不行呢?
相关文件程序如下:
main.c文件
#include "stm32f10x.h"
#include "led.h"
int main(void)
{
LedInit();
while (1)
{
LedD13(ON);
LedG14(OFF);
Delay();
LedD13(OFF);
Delay();
}
return 0;
}
led.c文件
#include "led.h"
void LedInit(void)
{
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD | RCC_APB2Periph_GPIOG,ENABLE);
GPIO_InitTypeDef gpio_init_struct;
gpio_init_struct.GPIO_Pin=GPIO_Pin_13;
gpio_init_struct.GPIO_Speed=GPIO_Speed_50MHz;
gpio_init_struct.GPIO_Mode=GPIO_Mode_Out_PP;
GPIO_Init(GPIOD,&gpio_init_struct);
gpio_init_struct.GPIO_Pin=GPIO_Pin_14;
GPIO_Init(GPIOG,&gpio_init_struct);
GPIO_WriteBit(GPIOD,GPIO_Pin_13,Bit_RESET);
GPIO_WriteBit(GPIOG,GPIO_Pin_14,Bit_RESET);
}
void test(void)
{
for(int i=0;i<9333333;i++);
}
void Delay(void)
{
LedG14(ON);
test();
LedG14(OFF);
test();
}
Makefile文件
######################################
# target
######################################
TARGET = stm32f103rbt6
######################################
# building variables
######################################
# debug build?
DEBUG = 1
# optimization
OPT = -Og
#######################################
# paths
#######################################
# Build path
BUILD_DIR = build
######################################
# source
######################################
# C sources
C_SOURCES = \
User/main.c \
User/stm32f10x_it.c \
User/led/led.c \
Libraries/CMSIS/CM3/CoreSupport/core_cm3.c \
Libraries/CMSIS/CM3/DeviceSupport/ST/STM32F10x/system_stm32f10x.c \
Libraries/STM32F10x_StdPeriph_Driver/src/misc.c \
Libraries/STM32F10x_StdPeriph_Driver/src/stm32f10x_gpio.c \
Libraries/STM32F10x_StdPeriph_Driver/src/stm32f10x_rcc.c
# ASM sources
ASM_SOURCES = \
startup_stm32f103xb.s
#######################################
# binaries
#######################################
PREFIX = arm-none-eabi-
# The gcc compiler bin path can be either defined in make command via GCC_PATH variable (> make GCC_PATH=xxx)
# either it can be added to the PATH environment variable.
ifdef GCC_PATH
CC = $(GCC_PATH)/$(PREFIX)gcc
AS = $(GCC_PATH)/$(PREFIX)gcc -x assembler-with-cpp
CP = $(GCC_PATH)/$(PREFIX)objcopy
SZ = $(GCC_PATH)/$(PREFIX)size
else
CC = $(PREFIX)gcc
AS = $(PREFIX)gcc -x assembler-with-cpp
CP = $(PREFIX)objcopy
SZ = $(PREFIX)size
endif
HEX = $(CP) -O ihex
BIN = $(CP) -O binary -S
#######################################
# CFLAGS
#######################################
# cpu
CPU = -mcpu=cortex-m3
# fpu
# NONE for Cortex-M0/M0+/M3
# float-abi
# mcu
MCU = $(CPU) -mthumb $(FPU) $(FLOAT-ABI)
# macros for gcc
# AS defines
AS_DEFS =
# C defines
C_DEFS = \
-DUSE_STDPERIPH_DRIVER \
-DSTM32F10X_HD
# AS includes
AS_INCLUDES =
# C includes
C_INCLUDES = \
-ILibraries/CMSIS/CM3/CoreSupport \
-ILibraries/CMSIS/CM3/DeviceSupport/ST/STM32F10x \
-ILibraries/STM32F10x_StdPeriph_Driver/inc \
-IUser/ \
-IUser/led
# compile gcc flags
ASFLAGS = $(MCU) $(AS_DEFS) $(AS_INCLUDES) $(OPT) -Wall -fdata-sections -ffunction-sections
CFLAGS += $(MCU) $(C_DEFS) $(C_INCLUDES) $(OPT) -Wall -fdata-sections -ffunction-sections
ifeq ($(DEBUG), 1)
CFLAGS += -g -gdwarf-2
endif
# Generate dependency information
CFLAGS += -MMD -MP -MF"$(@:%.o=%.d)"
#######################################
# LDFLAGS
#######################################
# link script
LDSCRIPT = STM32F103RBTx_FLASH.ld
# libraries
LIBS = -lc -lm -lnosys
LIBDIR =
LDFLAGS = $(MCU) -specs=nano.specs -T$(LDSCRIPT) $(LIBDIR) $(LIBS) -Wl,-Map=$(BUILD_DIR)/$(TARGET).map,--cref -Wl,--gc-sections
# default action: build all
all: $(BUILD_DIR)/$(TARGET).elf $(BUILD_DIR)/$(TARGET).hex $(BUILD_DIR)/$(TARGET).bin
#######################################
# build the application
#######################################
# list of objects
OBJECTS = $(addprefix $(BUILD_DIR)/,$(notdir $(C_SOURCES:.c=.o)))
vpath %.c $(sort $(dir $(C_SOURCES)))
# list of ASM program objects
OBJECTS += $(addprefix $(BUILD_DIR)/,$(notdir $(ASM_SOURCES:.s=.o)))
vpath %.s $(sort $(dir $(ASM_SOURCES)))
$(BUILD_DIR)/%.o: %.c Makefile | $(BUILD_DIR)
$(CC) -c $(CFLAGS) -Wa,-a,-ad,-alms=$(BUILD_DIR)/$(notdir $(<:.c=.lst)) $< -o $@
$(BUILD_DIR)/%.o: %.s Makefile | $(BUILD_DIR)
$(AS) -c $(CFLAGS) $< -o $@
$(BUILD_DIR)/$(TARGET).elf: $(OBJECTS) Makefile
$(CC) $(OBJECTS) $(LDFLAGS) -o $@
$(SZ) $@
$(BUILD_DIR)/%.hex: $(BUILD_DIR)/%.elf | $(BUILD_DIR)
$(HEX) $< $@
$(BUILD_DIR)/%.bin: $(BUILD_DIR)/%.elf | $(BUILD_DIR)
$(BIN) $< $@
$(BUILD_DIR):
mkdir $@
#######################################
# clean up
#######################################
clean:
-rm -fR $(BUILD_DIR)
#######################################
# dependencies
#######################################
-include $(wildcard $(BUILD_DIR)/*.d)
# *** EOF ***