Rafael Dazcal

Problem in trying to get MCF52233 DEMO BOARD running

Discussion created by Rafael Dazcal on Jun 17, 2010
Latest reply on Jul 4, 2010 by Rafael Dazcal

Greetings all,

 

I am still in my quest to get the MCF52233 DEMO boar running.

 

The board comes with a CD, and within the CD I found a software example that I am trying to get up and running on the board.

 

The path in the CD for the software is: "..\files\M52233DEMO\Software_Examples\ColdFire_Lite_DEMO".

 

After some trouble, I managed to compile the "ColdFire_Lite" target and I managed to upload it to the board. But it didn't work as expected.

 

When I run the program step by step, I see that the first instruction that it tries to execute is (MCF52235._lo.s):

 

 

/******************************************************************** *  * This is the main entry point upon hard reset.  The memory map is * setup based on linker file definitions, then the higher level * system initialization routine is called.  Finally, we jump to the * "main" process.  */asm_startmeup:_asm_startmeup:    /* Save off reset values of D0 and D1 */    move.l  d0,d6    move.l  d1,d7

 

 

But uppon trying to execute "move.l", it jumps to an exception handler:

 

 

/******************************************************************** * This routine is the lowest-level exception handler. */ asm_exception_handler:_asm_exception_handler:    lea     -16(SP),SP    movem.l D0-D1/A0-A1,(SP)    lea     16(SP),A1    move.l  A1,-(SP)    jsr     mcf5xxx_exception_handler    lea     4(SP),SP    movem.l (SP),D0-D1/A0-A1    lea     16(SP),SP    rte

 Following the code I see this exception tries to print the following message:

 

 

printf(EXCEPTFMT, "Illegal instruction", MCF5XXX_SF_PC(framep));

 I dont get any message through the serial port but I believe it is because it has not yet been initialized.

 

Now, my question is: How come I get an illegal instruction if this software is made specificaly for the MCF52233?

 

What am I doing wrong?

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