wd.inc

ARM入门的好帮手.包含了从简单到相对较复杂的程序.

;------------------------------------------------------------------------------
;-         ATMEL Microcontroller Software Support  -  ROUSSET  -
;------------------------------------------------------------------------------
; The software is delivered "AS IS" without warranty or condition of any
; kind, either express, implied or statutory. This includes without
; limitation any warranty or condition with respect to merchantability or
; fitness for any particular purpose, or against the infringements of
; intellectual property rights of others.
;------------------------------------------------------------------------------
;- File Name            : wd.inc
;- Object               : Assembler Watch Dog Definition File.
;-
;- 1.0 01/04/00 JCZ     : Creation
;------------------------------------------------------------------------------

;-----------------------------------------------
; Watch Dog User Interface Structure Definition
;-----------------------------------------------
                    ^       0
WD_OMR              #       4           ;- Overflow Mode Register
WD_CMR              #       4           ;- Counter Mode Register
WD_CR               #       4           ;- Control Register
WD_SR               #       4           ;- Status Register
                    #       4           ;- Reserved
WD_TLR              #       4           ;- Test Load Register : test purpose only

;-----------------------------------------------------------
;- WD_OMR: Watch Dog Overflow Mode Register Bits Definition
;-----------------------------------------------------------

WD_WDEN             EQU     0x01        ;- Watch Dog Enable
WD_RSTEN            EQU     0x02        ;- Internal Reset Enable
WD_IRQEN            EQU     0x04        ;- Interrupt Enable
WD_EXTEN            EQU     0x08        ;- External Signal Enable
WD_OKEY             EQU     0x2340      ;- Overflow Mode Register Access Key

;---------------------------------------------------
;- WD_CMR: Watch Dog Clock Register Bits Definition
;---------------------------------------------------

WD_WDCLKS           EQU     0x03        ;- Clock Selection
WD_WDCLKS_MCK8      EQU     0x0
WD_WDCLKS_MCK32     EQU     0x1
WD_WDCLKS_MCK128    EQU     0x2
WD_WDCLKS_MCK1024   EQU     0x3

WD_HPCV             EQU     (0x0F:SHL:2)    ;- High Preload Counter Value

WD_CKEY             EQU     (0x06E:SHL:7)   ;- Clock Register Access Key

;----------------------------------------------------
;- WD_CR: Watch Dog Control Register Bits Definition
;----------------------------------------------------

WD_RSTKEY           EQU     0xC071      ;- Watch Dog Restart Key

;---------------------------------------------------
;- WD_SR: Watch Dog Status Register Bits Definition
;---------------------------------------------------

WD_WDOVF            EQU     0x1         ;- WatchDog Overflow Status


;----------------------------------------------------
;-  WD_TLR: Test Load Register for test purpose only
;----------------------------------------------------

WD_TMRKEY           EQU     0xD64A0000  ;- Access Key
WD_TESTEN           EQU     0x2         ;- Test Mode Enable


                END