dsp281x_codestartbranch.asm

来自「TMS320F2812上电自动以串行方式将外部flash上的执行程序搬移到片内r」· 汇编 代码 · 共 64 行

;//###########################################################################
;//
;// FILE:  DSP281x_CodeStartBranch.asm	
;//
;// TITLE: Branch for redirecting code execution after boot. 
;//
;//###########################################################################
;// $TI Release: Flash281x API V2.10 $
;// $Release Date: August 4, 2005 $
;//########################################################################### 	


***********************************************************************

WD_DISABLE	.set	1		;set to 1 to disable WD, else set to 0

    .ref _c_int00
	.def code_start

***********************************************************************
* Function: codestart section
*
* Description: Branch to code starting point
***********************************************************************

    .sect "codestart"

code_start:
    .if WD_DISABLE == 1
        LB wd_disable       ;Branch to watchdog disable code
    .else
        LB _c_int00         ;Branch to start of boot.asm in RTS library
    .endif

;end codestart section


***********************************************************************
* Function: wd_disable
*
* Description: Disables the watchdog timer
***********************************************************************
    .if WD_DISABLE == 1

;    .sect ".user_code"
    .text
wd_disable:
    SETC OBJMODE        ;Set OBJMODE for 28x object code
    EALLOW              ;Enable EALLOW protected register access
    MOVZ DP, #7029h>>6  ;Set data page for WDCR register
    MOV @7029h, #0068h  ;Set WDDIS bit in WDCR to disable WD
    EDIS                ;Disable EALLOW protected register access

   LB _c_int00         ;Branch to start of boot.asm in RTS library

    .endif

;end wd_disable



	.end
	
; end of file CodeStartBranch.asm