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PROBLEMS WITH IAR

Jesus Reyes
Prodigy 20 points
Other Parts Discussed in Thread: MSP430G2231

i have a problem with "iar", i was debugging my assembly code, all was working so good, i made some changes in my code and suddenly i read this errors when i pushed the go button, "Fatal error: Failed to re-initialize Session aborted!"

if i debug the code again, iar says:

"Fatal error: failed to initialize Check if  hardware is connected, Check if  drivers are installed, try to restart the computer, tools using the parallel port are not supported on windows vista"

but, the hardwere is connected, the drivers are installed, i was working with my launchpad perfectly, i am not using the parallel port, and i have windows 7!!!

this is my code:

 

#include  "msp430g2231.h"

;-------------------------------------------------------------------------------

            ORG     0F800h                  ; Program Reset

;-------------------------------------------------------------------------------

            mov.w   #0280h,SP               ; Initialize stackpointer

            mov.b   #041h,&P1DIR

main        

            mov.b   #001h,&P1OUT

            call     reta

            mov.b   #000h,&P1OUT

            call     reta

            jmp     main

reta            

            mov.b   #0FFh,R4

reta1       

            dec     R4

            jnz     reta1

            RET

;-------------------------------------------------------------------------------

;           Interrupt Vectors

;-------------------------------------------------------------------------------

            ORG     0FFFEh                  ; MSP430 RESET Vector

 

            END

please help me.

  • 0
    Guru 227245 points

    I don't see you writing your main start address into the interrupt vector area.

    OFG 0FFFEH is fine, but then an
    DB 0F800h should follow.
    The MSp doesn't knwo where your program starts, and it does not automatically start at 0F800h, the begin of your MSPs flash. It can start anywhere (even in ram, if you want), and oyu need to tell it where to start. This is done by writing the proper start address to 0FFFEh. Wihtout this info, the MSP will read '0FFFFh' from there and jump there and then crash. And the debugger cannot establish a connection.

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