Lpc2000

Milind Deshpande <milind_pd@...> wrote:

Hi,

I am a newbie doing firmware development on LPC2106 and using couple of interrupts for UART0 and TIMER1. The interrupts work fine when the code resides in flash. 

However when I try to put the code in RAM for debug, the interrupts no longer work and so I cannot do any debug on UART0.



When putting the code in FLASH I am linking the code as below:

Code: 0x00000000 i.e. whole 128K for code.

Ram: 0x40000000 i.e. whole 64k for data.

Register E01FC040 = 0x0;



When putting the code in RAM I am linking the code as below:

Code: 0x40000000 i.e. 48K for Code

Ram: 0x4000C000 i.e. 15K for Data.

Register E01FC040 = 0x2;



The LPC manual does not say anything else for relocating the code in RAM, so I am not sure what is going wrong with my settings. Could someone please explain or let me know if I need to do any further settings to get the interrupts working in RAM.

Thanks in advance.



Regards

Milind

---------------------------------------------

You should remap the interrupt vector table from 0x00000000 to 0x40000000,then your program will run in the ram as well as in the flash.
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