MC9S12XDP512 - How to jump specified startup code in flash

sathish_K — Wed, 10 Oct 2007 13:42:55 GMT

Dear All,

Microcontroller : mc9s12xdp512

I have two startup code created in codewarrior and it is stored in two different address of flash.

How I can jump to specified startup code according with the MODE value(i.e. how I can jump to specified address in FLASH) and please give the sequence (in codewarrior).

Thanks and Regards,

sathish

--
Alban Edit: Please always include FSL Part Number in Message Subject line.

Message Edited by Alban on 2007-10-10 08:45 AM

Re: MC9S12XDP512 - How to jump specified startup code in flash

Lundin — Wed, 10 Oct 2007 17:12:46 GMT

From the reset vector:

void reset (void)
{
asm LDS #$2100; // or where ever you have the stack...

if(MODE == something)
{
runSomeCode();
}
else
{
runSomeOtherCode();
}

Yes, this will leave stuff on the stack permanently, so you will have to reset the stack pointer yet again on top of main().

topic MC9S12XDP512 - How to jump specified startup code in flash in S12 / MagniV Microcontrollers

MC9S12XDP512 - How to jump specified startup code in flash

Re: MC9S12XDP512 - How to jump specified startup code in flash