UART實驗用例

目錄文件結構：
UART_test
        ├─ 
        └─ main.c              S3CEV40 UART演示主程序文件
測試結果：
----------------------UART0: 115200,8,n,1-------------------------------
Embest S3CEV40 >Embest Info&Tech Co., Ltd.
Embest Info&Tech Co., Ltd.
Embest S3CEV40 >
------------------------------------------------------------------------
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＊ 本工程出廠時的默認存放目錄是: EmbestIDE\Examples\Samsung\S3CEV40
  如果要拷貝到其他目錄下運行，請修改工程配置選項 Project ->Settings:
  Linker >Add Library searching Path category >Library Searching Directories:
  	..\..\..\..\Build\xgcc-arm-elf\arm-elf\lib 
  	..\..\..\..\Build\xgcc-arm-elf\lib\gcc-lib\arm-elf\3.0.2
  修改為 (假設Embest IDE 安裝到C:\):
  	C:\EmbestIDE\Build\xgcc-arm-elf\arm-elf\lib
  	C:\EmbestIDE\Build\xgcc-arm-elf\lib\gcc-lib\arm-elf\3.0.2

＊ 在RAM 中調試時，修改工程配置項
      Project >Settings ->Assembler >General category >Predefines: set as
                       RAM_DEBUG=1
      Project >Settings ->Linker >General category >Linker script file: set as
                      ..\common\ram_ice.ld

＊ 燒寫程序到FLASH
 1、修改工程配置項
    i）在Flash 中運行程序:
       Project >Settings ->Assembler >General category >Predefines: set as 
                      （不用定義任何標號）
       Project >Settings ->Linker >General category >Linker script file: set as
                      ..\common\flash.ld

    ii）拷貝Flash 程序到RAM 中運行: 
       Project >Settings ->Assembler >General category >Predefines: set as
	        RAM_RUN=1
       Project >Settings ->Linker >General category >Linker script file: set as
           ..\common\ram_ice.ld
   
  * 如果要把程序存放到Flash 中的非0x0 地址上運行，
      請修改編譯燒寫輸出文件時使用的鏈接腳本文件（*.ld）對ROM_BASE 的定義。
 
 2、重新編譯工程，使用elf2bin工具產生BIN文件；
 
 3、運行Flash Programmer，按照實際情況配置調試設備：
    Setting -> configure... 

 4、點擊Open 菜單，打開配置文件（*.cfg），給出燒寫目標文件；

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|                                   Descriptions                                     |
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> Project directory default: EmbestIDE\Examples\Samsung\S3CEB2410
  If copy to another directory to run, please modify Project ->Settings:
  Linker >Add Library searching Path category >Library Searching Directories:
  	..\..\..\..\Build\xgcc-arm-elf\arm-elf\lib 
  	..\..\..\..\Build\xgcc-arm-elf\lib\gcc-lib\arm-elf\3.0.2
  Change setting as (assume that Embest IDE installtion is C:\):
  	C:\EmbestIDE\Build\xgcc-arm-elf\arm-elf\lib
  	C:\EmbestIDE\Build\xgcc-arm-elf\lib\gcc-lib\arm-elf\3.0.2

> Download the project into RAM to debug, modify Project ->Settings:
      Assembler >General category >Predefines: set as
                RAM_DEBUG=1
     Linker >General category >Linker script file: set as
               ..\common\ram_ice.ld
    	 
> Program the iamge into Flash to run:
  I. modify Project ->Settings:
	i) run program in Flash space:
	Assembler >General category >Predefines: set as 
		(without any symbol defined)
    Linker >General category >Linker script file: set as
    	..\common\flash.ld
    	
	ii) copy the program from Flash space to RAM to run:
	Assembler >General category >Predefines: set as
		RAM_RUN=1
    Linker >General category >Linker script file: set as
    	..\common\ram_ice.ld
    	
  Note: If want to change the image store address instead of 0x0, 
         please modify RAM_BASE defined consist in the linker script file (*.ld)
          before step II.

 II. Rebuild the project and click Tools ->Elf2Bin, 
      generate the Bin format file in directory DEBUG\

 III. Run Embest Falsh Programmer for ARM, then click on "File -> Open",
       select the configuration file (*.cfg),  and add in the Bin file to program.