• State Not Answered
  • Locked Locked
  • Replies 34 replies
  • Subscribers 15 subscribers
  • Views 7594 views
  • Users 0 members are here
Options
Related
How was your experience today?
This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

USB secondary ISP bootloader for LPC23xx with RTX Kernel problem

noom noise

I got the code USB secondary ISP bootloader for LPC23xx from NXP working fine with none RTX kernel but It does not working with RTX kernel. If anyone know more detail please help.

Thank you.

Parents
  • 0 in reply to Tamir Michael

    Corrected version of above file is:
    rapidshare.com/.../non_RTX_bootloader_with_RTX_application_for_lpc2378.rar
    (This works with new RTX (from v3.40) of uVision). Old version is deleted from rapidshare.

    Please note that in my case (in this example)

    RAM_INTVEC REMAP RAM_MODE

    ASM option for startup file does not remap IVT as Tamir Michael suggested. I have to say

    memcpy((char *)0x40000000, (char *)(0x00002000), 64);

    (see __rt_entry...)

    This is part of startup file that has to do with those macros:

    ; Memory Mapping (when Interrupt Vectors are in RAM)
MEMMAP          EQU     0xE01FC040      ; Memory Mapping Control
                IF      :DEF:REMAP
                LDR     R0, =MEMMAP
                IF      :DEF:RAM_MODE
                MOV     R1, #2
                ELSE
                MOV     R1, #1
                ENDIF
                STR     R1, [R0]
                ENDIF

    So uVision generated REMAP and RAM_MODE, but not a RAM_INTVEC part... And I guess that this is the reason why vectors are not remapped as in Tamir's case, but have to be copied manually in my case...

Reply
  • 0 in reply to Tamir Michael

    Corrected version of above file is:
    rapidshare.com/.../non_RTX_bootloader_with_RTX_application_for_lpc2378.rar
    (This works with new RTX (from v3.40) of uVision). Old version is deleted from rapidshare.

    Please note that in my case (in this example)

    RAM_INTVEC REMAP RAM_MODE

    ASM option for startup file does not remap IVT as Tamir Michael suggested. I have to say

    memcpy((char *)0x40000000, (char *)(0x00002000), 64);

    (see __rt_entry...)

    This is part of startup file that has to do with those macros:

    ; Memory Mapping (when Interrupt Vectors are in RAM)
MEMMAP          EQU     0xE01FC040      ; Memory Mapping Control
                IF      :DEF:REMAP
                LDR     R0, =MEMMAP
                IF      :DEF:RAM_MODE
                MOV     R1, #2
                ELSE
                MOV     R1, #1
                ENDIF
                STR     R1, [R0]
                ENDIF

    So uVision generated REMAP and RAM_MODE, but not a RAM_INTVEC part... And I guess that this is the reason why vectors are not remapped as in Tamir's case, but have to be copied manually in my case...

Children