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eolman
Visitor II
May 12, 2005
Question

run programme at the rams

  • May 12, 2005
  • 2 replies
  • 690 views
Posted on May 12, 2005 at 09:33

run programme at the rams

    This topic has been closed for replies.

    2 replies

    E
    eolmanAuthor
    Visitor II
    May 17, 2011
    Posted on May 17, 2011 at 12:06

    hello,everybody.would you help me?I need to erase and program csboot0-3.the data are copied from fs1.

    Therefore,main flash are used as data space.so, I copy the relevant code from csboot1 to SRAM and set VM to execute operation from SRAM. but the MCU gets stuck, (or reset by watchdog).

    I am using upsd3254a device with KEIL uVision2.

    My bootloader project configs:

    fs0: 0x8000 - 0xFFFF page 0

    fs1: 0x8000 - 0xFFFF page 1

    fs2: 0x8000 - 0xFFFF page 2

    ...

    fs7: 0x8000 - 0xFFFF page 7

    rs0: 0x0300 - 0x7FFF

    csiop: 0x200 - 0x2FF

    csboot0: 0x0000 - 0x7FFF

    thanks to all!

    T
    thomasthanner9
    Visitor II
    May 17, 2011
    Posted on May 17, 2011 at 12:06

    Hello,

    in order to be able to execute a program from SRAM you have to ensure that Bit 0 of the VM-register is set.

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