The MSP430F2xx will force a reset because it will not allow a fetch ; from within the address range of the peripheral memory, as is seen by ; return to the mainloop and LED flash.. ; In
Trang 1; MSP430G2xx1 Demo - Reset on Invalid Address fetch, Toggle P1.0
;
; Description: Toggle P1.0 by xor'ing P1.0 inside of a software loop that
; ends with TAR loaded with 3FFFh - op-code for "jmp $" This simulates a code
; error The MSP430F2xx will force a reset because it will not allow a fetch
; from within the address range of the peripheral memory, as is seen by
; return to the mainloop and LED flash
; In contrast, an MSP430F1xx device will "jmp $" stopping code execution with
; no LED flash
; ACLK = n/a, MCLK = SMCLK = default DCO
;
; MSP430G2xx1
;
-; /|\|
XIN|-; | | |
; |RST
XOUT|-; | |
; | P1.0| >LED
;
; D Dang
; Texas Instruments, Inc
; October 2010
; Built with IAR Embedded Workbench Version: 5.10
;*******************************************************************************
#include "msp430g2231.h"
ORG 0F800h ; Program Reset
; -RESET mov.w #0280h,SP ; Initialize stackpointer
StopWDT mov.w #WDTPW+WDTHOLD,&WDTCTL ; Stop WDT
SetupP1 bis.b #001h,&P1DIR ; P1.0 output
mov.w #03FFFh,&TAR ; "jmp $"
;
Mainloop xor.b #001h,&P1OUT ; Toggle P1.0
Wait mov.w #050000,R15 ; Delay to R15
L1 dec.w R15 ; Decrement R15
jnz L1 ; Delay over?
mov #0170h,PC ; Invalid fetch
jmp Mainloop ; Again
;
; -; Interrupt Vectors Used MSP430
ORG 0FFFEh ; MSP430 RESET Vector
DW RESET ;
END