Create gcc branch. Makefile is added. xShell is not working.

src/Makefile

@@ -0,0 +1,109 @@
+#STM32 makefile template
+# 生成的文件名<项目名>
+PROJECT                  = ad5791ref_stm32f030
+
+# 定义文件格式和文件名
+TARGET                  := $(PROJECT)
+TARGET_ELF              := $(TARGET).elf
+TARGET_BIN              := $(TARGET).bin
+TARGET_HEX              := $(TARGET).hex
+OBJCPFLAGS_ELF_TO_BIN    = -Obinary
+OBJCPFLAGS_ELF_TO_HEX    = -Oihex
+OBJCPFLAGS_BIN_TO_HEX    = -Ibinary -Oihex
+VPATH = ..
+# 定义路径
+TOP_DIR      = .
+INC_DIR     := -I./
+INC_DIR     += -I../src
+INC_DIR 	+= -I../stm32f0xxlib/CMSIS/Include
+INC_DIR 	+= -I../stm32f0xxlib/CMSIS/Device/ST/STM32F0xx/Include
+INC_DIR 	+= -I../stm32f0xxlib/STM32F0xx_StdPeriph_Driver/inc
+INC_DIR 	+= -I./app
+INC_DIR 	+= -I./bsp
+INC_DIR 	+= --include ./stm32f0xx_conf.h
+
+# 设置ld链接脚本文件
+LDSCRIPT    := ./STM32F030F4.ld
+
+# 定义编译工具
+CC          = arm-none-eabi-gcc
+AS          = arm-none-eabi-as
+LD          = arm-none-eabi-ld
+AR          = arm-none-eabi-ar
+OBJCP       = arm-none-eabi-objcopy
+
+# 定义编译标志
+CCFLAGS     += -Wall -mcpu=cortex-m0 -mthumb -g -mfloat-abi=soft '-std=gnu99'
+# -march=armv7-m
+ASFLAGS     += -Wall -mcpu=cortex-m0 -mthumb
+LDFLAGS     += -T $(LDSCRIPT) -L'C:\Program Files (x86)\GNU Tools Arm Embedded\7 2018-q2-update\lib\gcc\arm-none-eabi\7.3.1' -L'C:\Program Files (x86)\GNU Tools Arm Embedded\7 2018-q2-update\arm-none-eabi\lib' -lgcc -lc -lnosys
+#-A armv7-m
+#LDFLAGS     += -L /Users/ch-yanghl/gcc-arm-none-eabi/lib/gcc/arm-none-eabi/5.4.1
+#LDFLAGS     += -L /Users/ch-yanghl/gcc-arm-none-eabi/arm-none-eabi/lib/thumb
+
+# .c文件中的头文件引用查找路径
+CCFLAGS     += $(INC_DIR)
+
+# .s文件的flags
+#ASFLAGS        +=
+
+# .c文件编译时定义宏
+CCFLAGS     += -D STM32F030 -D USE_STDPERIPH_DRIVER
+VPATH = ..
+SOURCE := $(wildcard ./*.c)
+SOURCE += $(wildcard ./bsp/*.c)
+SOURCE += $(wildcard ./app/*.c)
+SOURCE += $(wildcard ../stm32f0xxlib/STM32F0xx_StdPeriph_Driver/src/*.c)
+
+# 添加启动文件
+#SOURCE         += $(SCRIPT_DIR)/startup_stm32f10x_md.c
+SOURCE_ASM      := ../src/startup_stm32f030.s
+
+# 展开工作 子目录中的inc文件（inc文件中添加需要编译链接的.c，.s等文件）
+#-include $(TOP_DIR)/src/make.inc
+#-include $(TOP_DIR)/third_party/make.inc
+
+# 替换文件后缀
+C_OBJS      := $(SOURCE:%.c=%.o)
+ASM_OBJS    := $(SOURCE_ASM:%.s=%.o)
+
+# 编译命令的定义
+COMPILE     = $(CC) $(CCFLAGS) -c $< -o $@ 
+ASSEMBLE    = $(AS) $(ASFLAGS) -c $< -o $@ 
+LINK        = $(LD) $+ $(LDFLAGS) $(LDLIBS) -o $@ 
+ELF_TO_BIN  = $(OBJCP) $(OBJCPFLAGS_ELF_TO_BIN) $< $@
+BIN_TO_HEX  = $(OBJCP) $(OBJCPFLAGS_BIN_TO_HEX) $< $@ 
+
+# 定义伪目标
+.PHONY: all clean printf
+
+# 定义规则
+all: $(TARGET_HEX)
+	@echo "build done"
+
+$(TARGET_HEX): $(TARGET_BIN)
+	$(BIN_TO_HEX)
+
+$(TARGET_BIN): $(TARGET_ELF)
+	$(ELF_TO_BIN)
+
+$(TARGET_ELF): $(C_OBJS) $(ASM_OBJS)
+	$(LINK)
+
+$(C_OBJS):%.o:%.c
+	$(COMPILE)
+
+$(ASM_OBJS):%.o:%.s
+	$(ASSEMBLE) 
+
+printf:
+	@echo $(ASM_OBJS)
+	@echo $(ASSEMBLE)
+
+# 清理项
+clean:
+	rm -f $(TARGET_HEX)
+	rm -f $(TARGET_BIN)
+	rm -f $(TARGET_ELF)
+	rm -f $(C_OBJS) $(ASM_OBJS)
+	@echo "clean done"

src/STM32F030F4.ld

@@ -0,0 +1,154 @@
+/* Linker script to configure memory regions. */
+MEMORY
+{ 
+  FLASH (rx)      : ORIGIN = 0x08000000, LENGTH = 64k
+  RAM (xrw)       : ORIGIN = 0x200000C0, LENGTH = 8k - 0x0C0
+}
+
+/* Linker script to place sections and symbol values. Should be used together
+ * with other linker script that defines memory regions FLASH and RAM.
+ * It references following symbols, which must be defined in code:
+ *   Reset_Handler : Entry of reset handler
+ * 
+ * It defines following symbols, which code can use without definition:
+ *   __exidx_start
+ *   __exidx_end
+ *   __etext
+ *   __data_start__
+ *   __preinit_array_start
+ *   __preinit_array_end
+ *   __init_array_start
+ *   __init_array_end
+ *   __fini_array_start
+ *   __fini_array_end
+ *   __data_end__
+ *   __bss_start__
+ *   __bss_end__
+ *   __end__
+ *   end
+ *   __HeapLimit
+ *   __StackLimit
+ *   __StackTop
+ *   __stack
+ *   _estack
+ */
+ENTRY(Reset_Handler)
+
+SECTIONS
+{
+    .text :
+    {
+        KEEP(*(.isr_vector))
+        *(.text*)
+        KEEP(*(.init))
+        KEEP(*(.fini))
+        KEEP(*.o(xShellTab))
+
+        /* .ctors */
+        *crtbegin.o(.ctors)
+        *crtbegin?.o(.ctors)
+        *(EXCLUDE_FILE(*crtend?.o *crtend.o) .ctors)
+        *(SORT(.ctors.*))
+        *(.ctors)
+
+        /* .dtors */
+        *crtbegin.o(.dtors)
+        *crtbegin?.o(.dtors)
+        *(EXCLUDE_FILE(*crtend?.o *crtend.o) .dtors)
+        *(SORT(.dtors.*))
+        *(.dtors)
+
+        *(.rodata*)
+
+        KEEP(*(.eh_frame*))
+    } > FLASH
+
+    .ARM.extab :
+    {
+        *(.ARM.extab* .gnu.linkonce.armextab.*)
+    } > FLASH
+
+    __exidx_start = .;
+    .ARM.exidx :
+    {
+        *(.ARM.exidx* .gnu.linkonce.armexidx.*)
+    } > FLASH
+    __exidx_end = .;
+
+    __etext = .;
+    _sidata = .;
+
+    .data : AT (__etext)
+    {
+        __data_start__ = .;
+        _sdata = .;
+        *(vtable)
+        *(.data*)
+
+        . = ALIGN(4);
+        /* preinit data */
+        PROVIDE_HIDDEN (__preinit_array_start = .);
+        KEEP(*(.preinit_array))
+        PROVIDE_HIDDEN (__preinit_array_end = .);
+
+        . = ALIGN(4);
+        /* init data */
+        PROVIDE_HIDDEN (__init_array_start = .);
+        KEEP(*(SORT(.init_array.*)))
+        KEEP(*(.init_array))
+        PROVIDE_HIDDEN (__init_array_end = .);
+
+
+        . = ALIGN(4);
+        /* finit data */
+        PROVIDE_HIDDEN (__fini_array_start = .);
+        KEEP(*(SORT(.fini_array.*)))
+        KEEP(*(.fini_array))
+        PROVIDE_HIDDEN (__fini_array_end = .);
+
+        KEEP(*(.jcr*))
+        . = ALIGN(4);
+        /* All data end */
+        __data_end__ = .;
+        _edata = .;
+
+    } > RAM
+
+    .bss :
+    {
+        . = ALIGN(4);
+        __bss_start__ = .;
+        _sbss = .;
+        *(.bss*)
+        *(COMMON)
+        . = ALIGN(4);
+        __bss_end__ = .;
+        _ebss = .;
+    } > RAM
+
+    .heap (COPY):
+    {
+        __end__ = .;
+        end = __end__;
+        *(.heap*)
+        __HeapLimit = .;
+    } > RAM
+
+    /* .stack_dummy section doesn't contains any symbols. It is only
+     * used for linker to calculate size of stack sections, and assign
+     * values to stack symbols later */
+    .stack_dummy (COPY):
+    {
+        *(.stack*)
+    } > RAM
+
+    /* Set stack top to end of RAM, and stack limit move down by
+     * size of stack_dummy section */
+    __StackTop = ORIGIN(RAM) + LENGTH(RAM);
+    _estack = __StackTop;
+    __StackLimit = __StackTop - SIZEOF(.stack_dummy);
+    PROVIDE(__stack = __StackTop);
+
+    /* Check if data + heap + stack exceeds RAM limit */
+    ASSERT(__StackLimit >= __HeapLimit, "region RAM overflowed with stack")
+}

USR/app/xShell.C → src/app/xShell.c

@@ -1,34 +1,4 @@
-/************xShell*******************************************************
-* used on stm32f103ze,compiler:arm_cc;not support IAR
-*
-* ver 0.1,2013-12-22,by 徐兴良 in xjtu,xi'an,shanxi,CHINA
-**************************************************************************
-* ver 0.2,2015-3-25,by 徐兴良 in xjtu,xi'an,shanxi,CHINA,
-*    made it more easier to use
-**************************************************************************
-* how to use it:
-* 1. set flag USE_XSHELL to 1,
-*	   you can simple turn it off by set it to 0
-* 2. add "--keep *.o(xShellTab)" to misc control in linker page(without "") 
-* 3. complete function xShell_printf(const char*str,...),
-*    if you dont want any output, just write a empty function
-*    you can use this to simply it
-*    #define xShell_print printf
-*    this is much easier to realize the printf function
-* 4. register your function use the macro xShell_FUN_REG(name, desc)
-* 5. register your variable use the macro xShell_VAR_REG(name, desc)
-*    the variable can be list to the terminal
-* 6. when you received a character, execute 
-*    xShell_InputChar(xShell_st *xShell,char c);
-*    fistly, you should first define the struct (xShell),this is
-*    the workspace of xshell, pass its pointer to this function, 
-*    parameter 'c' is the charater you received
-* 7. enjoy it.
-*
-****************************************************************************/
-
-
-#include <string.h>
+#include "string.h"
 #include "xShell.H"
 #include "xprintf.h"
 
@@ -216,7 +186,7 @@ static unsigned int xShell_Str2Num(char*Str,unsigned long *Res)
 	while(1)
 	{
 		if((*p<='9'&&*p>='0')||(*p<='f'&&*p>='a')||(*p=='x'&&Num==1))
-		{//字母开头或' 'x开头的则认为16进制，统计合法的字符个数
+		{//
 			if(*p>='a')HexDec=16;	
 			Num++;					
 		}else if(*p=='\0')break;	
@@ -227,7 +197,7 @@ static unsigned int xShell_Str2Num(char*Str,unsigned long *Res)
 	if(HexDec==16)		
 	{
 		if(Num<3)return 2;		
-		if(*p=='0' && (*(p+1)=='x'))//剔除没有加0x前缀的16进制数
+		if(*p=='0' && (*(p+1)=='x'))//
 		{
 			p+=2;	
 			Num-=2;