IAR怎么在启动程序里面添加关闭看门狗代码
IAR怎么在启动程序里面添加关闭看门狗代码
看网上的资料教这么做：
解决办法：
方法一 将一些变量（主要是大全局数组）定义成 no init类型
方法二 修改IAR的cstartup.s43程序，具体方法如下：（iar310a为例）
1 将cstartup.s43程序加载到用户自己的项目中，cstartup.s43在iar310a的路径如下$TOOLKIT_DIR$\src\LIB\
2 修改cstartup.s43中的__program_start子程序，加入关闭看门狗的命令 MOV #0x5A80,&0x0120
3 在Project->Options->Linker->Config页中选择Override default programe ,并将Entry lib 设置成 __program_start
按照上面的指示：我在文件中加入：MOV.W #WDTPW+WDTHOLD , &WDTCTL
（也尝试过，在我的工程中添加#define DISABLE_WATCHDOG 语句，均无效果；也尝试过，直接注释掉调件编译，让其直接编译，也没有效果：
//#ifdef DISABLE_WATCHDOG
MOV #WDTPW + WDTHOLD, &WDTCTL
//#endif
但是我的IAR 是6.0版的，我用的是MSP430，没有看到Entry lib ，取而代之的是Entry symb 所以我选择了 Entry symb ：__program_start
但是没有任何效果,什么原因？？
cstartup.s43文件内容：
/**************************************************
*
* System initialization code for the MSP430 IAR C/EC++ Compiler.
*
* Copyright ?2002-2008 IAR Systems AB.
*
* $Revision: 5271 $
*
**************************************************/
//
// There are two libraries provided with compilers from IAR Systems,
// CLib and DLib. This file is designed to work with both libraries.
// Some parts of it is DLib-specific. However, those parts will not
// be included when building an application using CLib.
//
//
// Please define one of the following preprocessor symbols in order to
// customize the system initialization process.
//
// IGNORE_SEG_INIT -- To remove segment initialization
// IGNORE_DATA16_DATA -- To remove segment initialization of DATA16 data
// IGNORE_DATA20_DATA -- To remove segment initialization of DATA20 data
// IGNORE_RAMFUNC_INIT -- To remove segment initialization of ramfunc code
// DISABLE_WATCHDOG -- To disable the watchdog
//
// Note: In the current version the symbols "IGNORE_SEG_INIT" and
// "IGNORE_DATA16_DATA" will perform the same task. However, both are
// supported in order to be compatible with other IAR Compilers.
//
// Note: To disable the watchdog, a device-specific header file will
// be included.
//
#include "macros.m43"
#include "cfi.m43"
#ifdef DISABLE_WATCHDOG
#include "msp430.h"
#endif
#define XRSEGCSTART RSEG CSTART:CODE:NOROOT(1)
XCFI_NAMES libNames
XCFI_COMMON libCommon, libNames
// ---------------------
// The cstartup code -- call __low_level_init, perform initialization,
// call constructors and call main. If main returns the exit system
// is started.
//
MODULE ?cstart
//
// Ensure that this is build with the same "positions independent
// code" settings as the compiler uses.
//
XPICRTMODEL
//
// Forward declarations of segments.
//
RSEG HEAP:DATA:NOROOT(1)
RSEG CSTACK:DATA:NOROOT
RSEG DATA16_Z:DATA:NOROOT
RSEG DATA16_I:DATA:NOROOT
RSEG DATA16_ID:CONST:NOROOT
RSEG CODE_I:DATA:NOROOT
RSEG CODE_ID:CONST:NOROOT
#if __CORE__==__430X_CORE__
RSEG DATA20_Z:DATA:NOROOT
RSEG DATA20_I:DATA:NOROOT
RSEG DATA20_ID:CONST:NOROOT
#endif
// ---------------------
// System initialization.
//
XRSEGCSTART
PUBLIC __program_start
EXTERN ?reset_vector
REQUIRE ?reset_vector
__program_start:
PUBLIC ?cstart_begin
?cstart_begin:
// --------------------
// Turn off the watchdog.
//
// Note: This is excluded by default. Please define
// DISABLE_WATCHDOG to include it.
//
#ifdef DISABLE_WATCHDOG
MOV #WDTPW + WDTHOLD, &WDTCTL
#endif
// --------------------
// Initialize SP to point to the top of the stack.
//
MOV.W #WDTPW+WDTHOLD , &WDTCTL MOV #SFE(CSTACK), SP
//
// Ensure that main is called.
//
REQUIRE ?cstart_call_main
// -----------------------------------------------
// Call __low_level_init to perform initialization before initializing
// segments and calling main. If the function returns 0 no segment
// initialization should take place.
//
// Link with your own version of __low_level_init to override the
// default action: to do nothing but return 1.
//
XRSEGCSTART
PUBLIC ?cstart_call_low_level_init
EXTERN __low_level_init
?cstart_call_low_level_init:
XCALL #__low_level_init
CMP #0, W0
JEQ ?cstart_call_main
// -----------------------------------------------
// Segment initialization:
//
// xxx_Z -- uninitialized data that are filled with zeros.
// xxx_I -- initialized data that gets the values from the corresponding
// xxx_ID segment.
//
#ifndef IGNORE_SEG_INIT
// --------------------
// Initialize code for __ramfunc functions.
//
XRSEGCSTART
PUBLIC ?cstart_init_copy_ramfunc
?cstart_init_copy_ramfunc:
#ifndef IGNORE_RAMFUNC_INIT
#ifndef REGISTER_MODEL_REG20
MOV #SFB CODE_I, CW0
MOV #SFB CODE_ID, CW1
MOV #sizeof CODE_I, CW2
XCALL #__data16_memcpy
#else // MSP430X with 20 bit pointers.
EXTERN __data20_memcpy
MOVA #SFB CODE_I, CW0
MOVA #SFB CODE_ID, CW1
MOV.W #LWRD(sizeof CODE_I), L1L
MOV.W #HWRD(sizeof CODE_I), L1H
XCALL #__data20_memcpy
#endif // REGISTER_MODEL_REG20
#endif // IGNORE_RAMFUNC_INIT
// --------------------
// Initialize data16
//
#ifndef IGNORE_DATA16_DATA
//
// Clear DATA16_Z.
//
XRSEGCSTART
PUBLIC ?cstart_init_zero
EXTERN __data16_memzero
?cstart_init_zero:
MOV #SFB DATA16_Z, CW0
MOV #sizeof DATA16_Z, CW1
XCALL #__data16_memzero
//
// Copy DATA16_ID to DATA16_I
//
XRSEGCSTART
PUBLIC ?cstart_init_copy
EXTERN __data16_memcpy
?cstart_init_copy:
MOV #SFB DATA16_I, CW0
MOV #SFB DATA16_ID, CW1
MOV #sizeof DATA16_I, CW2
XCALL #__data16_memcpy
#endif // IGNORE_DATA16_DATA
// --------------------
// Data20
//
#if __CORE__==__430X_CORE__
#ifndef IGNORE_DATA20_DATA
//
// Clear DATA20_Z.
//
XRSEGCSTART
PUBLIC ?cstart_init_zero20
EXTERN __data20_memzero
?cstart_init_zero20:
MOVA #SFB DATA20_Z,W0
MOV.W #LWRD(sizeof DATA20_Z), L1L
MOV.W #HWRD(sizeof DATA20_Z), L1H
XCALL #__data20_memzero
//
// Copy DATA20_ID to DATA20_I
//
XRSEGCSTART
PUBLIC ?cstart_init_copy20
EXTERN __data20_memcpy
?cstart_init_copy20:
MOVA #SFB DATA20_I, CW0
MOVA #SFB DATA20_ID, CW1
MOV.W #LWRD(sizeof DATA20_I), L1L
MOV.W #HWRD(sizeof DATA20_I), L1H
XCALL #__data20_memcpy
#endif // IGNORE_DATA16_DATA
#endif // MSP430X
#endif // IGNORE_SEG_INIT
// -----------------------------------------------
// Call constructors of static objects.
//
RSEG DIFUNCT:CONST:NOROOT(1)
XRSEGCSTART
PUBLIC ?cstart_call_ctors
EXTERN __call_ctors
?cstart_call_ctors:
#ifdef REGISTER_MODEL_REG20
MOVA #SFB DIFUNCT, CW0
MOVA #SFE DIFUNCT, CW1
#else /* REGISTER_MODEL_REG20 */
MOV.W #SFB DIFUNCT, CW0
MOV.W #SFE DIFUNCT, CW1
#endif /* REGISTER_MODEL_REG20 */
XCALL #__call_ctors
// -----------------------------------------------
// Call main() with no arguments and then exit using the return value
// of main as the parameter.
//
XRSEGCSTART
PUBLIC ?cstart_call_main
EXTERN main
EXTERN exit
?cstart_call_main:
XCALL #main
XCALL #exit
PUBLIC ?cstart_end
?cstart_end:
// Note: "ENDMOD label" means code that this module is the
// start of the application.
ENDMOD __program_start
// ---------------------
// __low_level_init
//
// The only action of this default version of __low_level_init is to
// return 1. By doing so it signals that normal initialization of data
// segments should be done.
//
// A customized version of __low_level_init may be created in order to
// perform initialization before initializing segments and calling main
// and/or to skip initialization of data segments under certain
// circumstances.
//
// For further details see sample file lowinit.c
//
MODULE lowinit
PUBLIC __low_level_init
RSEG CODE:CODE:NOROOT(1)
__low_level_init:
MOV #1, W0 // By returning 1 this function
XRET // indicates that the normal
// initialization should take place
ENDMOD
// ---------------------
// Define reset vector.
//
MODULE ?reset_vector
RSEG RESET:CONST:NOROOT(1)
PUBLIC ?reset_vector
EXTERN __program_start
?reset_vector:
DC16 __program_start
ENDMOD
END
[解决办法]
重来都是上电后在main里首先关狗
不知道LZ为神马不能接受这种很传统的应用方式
：）
[解决办法]
在main程序给数组初始化不行吗？
