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Last Post 08 Sep 2008 04:30 PM by  nambinhngo
LH79524/79525 memory
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New Member
New Member

20 Aug 2008 11:08 AM
    Hi all,

    I need some help.
    I am currently working on the project which utilizes the LH79525 MCU.
    I designed my own board, which used SRAM instead of SDRAM comparing to the logic sdk79524 eval board.
    the SRAM is mapped on CS0 location 0x40000000, and the flash is at 0x44000000.
    I loaded the startup program from the BSP package, and the unit did not initialize at all.
    I tried the led_flasher examples and added the memory-init, clock init, gpio, and iomux. the unit initialized such as CLKOUT = HCLK, and lit up the test LED, but the stack setup does not work.
    It seems the unit run in the internal RAM, and unable to use the external RAM.

    Wonder whether I missed out anything.

    If I puchase the LOLO source code, will it help?
    Would LOLO allows the unit to run on SRAM instead of SDRAM?
    How much the LOLO open source cost with support package?

    New Member
    New Member

    08 Sep 2008 04:30 PM
    HI alls,

    After struggling with the initialization process during boot, I was able to successfully bring up the board.
    The tool I use is NXP BSP software.
    GNUARM compiler.

    I will post my code later so nobody I have to suffering through this.

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