I'm using a LPC2129, with Realview MDK-ARM 3.11 and RealView RL-ARM 3.10
I'm trying to run an application loaded by a user bootloader. So I have a bootloader code in 0x0000 0000 who uses a USB connection to load an application code in 0x0000 4000. The program runs fine. The problem is when I jump to the application code, when I have to remmap the interrupt vectors.
I've tried using REMAP RAM_MODE for Startup.s file in the application, but it seems that the interrupts still go to the Flash Vectors.
Besides, the SWI handler is configured by the OS (RL-ARM) and the Dabt handler by the Real Time Agent
I appreciate any help or useful link
Ok I guess the scatter file is for the application actually you are loading only the application in your target and you start with a jump to address 0x4000 in CodeInit.s which simulate the bootloader
can you please show us the files Startup.s Vectors.s
because it doesnot work for me ? did you use REMAP RAM_MODE ?
thank you
The Vectors.s is part of the original Startup.s which is separated to run on RAM
; Area Definition and Entry Point ; Startup Code must be linked first at Address at which it expects to run. AREA RAMVECT, CODE, READONLY ; Exception Vectors ; Mapped to Address 0. ; Absolute addressing mode must be used. ; Dummy Handlers are implemented as infinite loops which can be modified. Vectors LDR PC, Reset_Addr LDR PC, Undef_Addr LDR PC, SWI_Addr LDR PC, PAbt_Addr LDR PC, DAbt_Addr NOP ; Reserved Vector ;LDR PC, IRQ_Addr LDR PC, [PC, #-0x0FF0] ; Vector from VicVectAddr LDR PC, FIQ_Addr Reset_Addr DCD Reset_Handler Undef_Addr DCD Undef_Handler SWI_Addr DCD SWI_Handler PAbt_Addr DCD PAbt_Handler DAbt_Addr DCD DAbt_Handler DCD 0 ; Reserved Address IRQ_Addr DCD IRQ_Handler FIQ_Addr DCD FIQ_Handler IMPORT SWI_Handler IMPORT DAbt_Handler IMPORT Reset_Handler IMPORT Undef_Handler IMPORT PAbt_Handler IMPORT IRQ_Handler IMPORT FIQ_Handler END
The startup is almost the same, just without this part of the code.
To use the Scatter-File you have to deselect "Use Memory Layout from Target Dialog" from Linker options