emi_ghs.mac

ATMEL AT91RM9200开发板配套光盘上的全部示例程序

;------------------------------------------------------------------------------
;-    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 source          : emi_ghs.mac
;- Object               : Main loop function can be assembly in ARM or THUMB
;-                        This function read DATA in data area with or without
;-			  Wait state
;-
;- 1.0 04/Mar/03 JPP    : Creation
;------------------------------------------------------------------------------

;------------------------------------------------------------------------------
;- Macros               : EMI_MEA
;- Parameter
;- Treatments           : Infinite loop for measurement 
;- Called Functions     : None
;- Called Macros        : None
;------------------------------------------------------------------------------
;- (TC) Counter Clock Disable Command
#define AT91C_TC_CLKDIS     0x02
	    .import ptEmiFlag
            
            .macro	EMI_MEA	label
	    .macrolocal loop
label:	    
loop:
	nop 	                ; 1
	nop 	                ; 2
	nop 	                ; 3
	nop 	                ; 4
	nop 	                ; 5
	nop 	                ; 6
	nop 	                ; 7
	nop 	                ; 8
	nop 	                ; 9
	nop 	                ; 10

; test loop                     
	ldr	r2,[r0]		; get flag value 
	cmp	r2,#0 		; test if 0
	beq	loop
; return in interworking
	bx 	r14
       .type	label,$function
       .size	label,.-label


            .endm