msp430F6779 changing reset vector address

Hello,

Please refer to this thread on how to create a custom reset vector.  System pre-initialization can be found in Section 6.8.1 of slau132.

Thanks,

Ryan

Hi Brian, sorry for I could not reply earlier. I did what exactly you said and the result is positive.I write an assembly code which says to PC jump 2C000h address, and I reconfigure my linker file.So now it looks working fine.Thanks for your help.

Best Regards.. 

Hi baycan

I need to do the exact same thing and on the same processor but I can't quite get my head around how you code it.

Please can you post the linker and relative code you implemented to get this working?

Thanks very much

Hi Mark,

If you want to do exact process you need to aply 3 different configuration:

1-) You need to customise your linker file:

If you chacked linker file before, you saw there are many memory related tags ( for example: INFO_MEMORY, DATA20_C,DATA20_ID ..) You need to create your own tag in this file. For instance my tag name is : BOOTLOADER_JUMP and I added this line into my linker file:

-Z(CONST)BOOTLOADER_JUMP=1800-1808

That means I tagged a memory location which has 8 bytes length on my memory. Now I can use this tag in my source code. Lets see second step.

2-) Now I need to write in BOOTLOADER_JUMP area to JUMP "any address", to do this I need to add these codes just on my main function.

#pragma location="BOOTLOADER_JUMP"
__root const uint16_t bootloader_jump[] = {

0x0280, 0xC000, // You need to reconfigure here for your own address
};

3-) Last step is about the where the program start after reset. I mean you need to configure reset vector address. For doing this I added a cstartup.s43 file in my project and I reconfigured my reset address easily.

After added this, now we are all done.

Thanks Baycan

We are using the TI-RTOS within the CCS environment and unfortunately cannot do the above. I've been given some suggestions and will try these.

e2e.ti.com/.../455518

Thanks for the help anyway.

Hi Baycan

I have now actually done this using the same method.

I have use INFOD (0x1800) as my area to put the jump instructions. This is already defined in the linker.

Then I have use the following instruction in my linker to reassign _c_int00:

.text:_isr:_c_int00 : {} > INFOD

Then I put the following at the top of where my main lives (jump to 0x2C000) for the instruction:

#pragma location=0x1800
const uint32_t bootloader_jump[] = {
0x00000280, 0x0002C000,
};

And it now works fine.

Thanks again.