?? fet110_selftest.s43
字號:
;******************************************************************************
; MSP-FET430x110 Demo - Use JTAG for Downloadable Test Code
;
; Description: This program demonstrates how to use JTAG to load a one-time
; test code kernel into RAM. The test code is used only during initial
; power up. The main program on power up tests for a key 0AA55h in RAM
; location 0200h and if valid calls a test routine at RAM location 0202h.
; After the test program has been executed, the RAM key is cleared. For
; demonstration, the test code toggles P1.0 8 times.
; The main program sets P1.0.
; ACLK = n/a, MCLK = SMCLK = default DCO ~800k
;
; MSP430F1121
; -----------------
; /|\| XIN|-
; | | |
; --|RST XOUT|-
; | |
; | P1.0|-->LED
;
; M. Buccini
; Texas Instruments Inc.
; Feb 2005
; Built with IAR Embedded Workbench Version: 3.21A
;*****************************************************************************
#include <msp430x11x1.h>
;------------------------------------------------------------------------------
ORG 0200h ;
;------------------------------------------------------------------------------
DW 0AA55h
mov.b #16,R4 ; R4 used as event counter
T1 xor.b #001h,&P1OUT ; Toggle P1.0
mov.w #0FFFFh,R5 ; R5 used as delay counter
T2 dec R5 ;
jnz T2 ; Delay over?
dec.b R4 ;
jnz T1 ; Event over?
clr.w 0200h ; Clear password
clr.w &WDTCTL ; Force POR
;
;------------------------------------------------------------------------------
ORG 0F000h ;
;------------------------------------------------------------------------------
RESET mov.w #300h,SP ; Initialize stackpointer
StopWDT mov.w #WDTPW+WDTHOLD,&WDTCTL ; Stop WDT
SetupP1 bis.b #001h,&P1DIR ; P1.0 output
cmp.w #0AA55h,&200h ; Check selftest password
jne Mainloop ; jmp --> normal program
call #202h ; Call selftest
;
Mainloop bis.b #001h,&P1OUT ; Set P1.0
jmp Mainloop ; Again
;
;-----------------------------------------------------------------------------
; Interrupt Vectors
;-----------------------------------------------------------------------------
ORG 0FFFEh ; MSP430 RESET Vector
DW RESET ;
END
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