[AVR] how to update only some portion or APIs of code in microcontrollers

[shreyas_patel21]

I am using atxmega256a3bu microcontroller for my project, I want to make a program architecture like I have compiled and programmed the code and now only some APIs can be changed and reprogrammed into the board other portion of flash should not be changed and newly compiled APIs can work with rest of the code that was already programmed in the flash.

for example, I have made all the code and downloaded it into the board, which has a API function named

todo_callback()
{
printf("nothing to do");
}

Now if I want to change the function as below:

todo_callback()
{
printf("updated to do");
}

then how can I update this function only whithout changing the whole flash code.

Regards, shreyas.

 

[Raj Gunaseelan]

Hi Shreyas,
I don't think there is a method to do that. But still, let us see if someone else has got something.


Raj Gunaseelan