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LPC1778 can't start from any IROM Address only 0x0

Vladimir Timohin

Dear All,

I use LPC1778 and try to divide internal flash memory for my handmade bootloader and firmware.
And when i set another IROM1 start address for my firmware (for example 0x1000) i see SWD Communication Failure message in window "Building Output". After that i can't debug or update my mcu. Can use only ISP.
Why changing IROM1 start address is stopping MCU?
What i have to do to run my code from any address?
P.S. When i use LPC2367 there is no these problems.
P.P.S. My version 4.53

I trying apply RAM_MODE, REMAP commands for my startup file. But doesn't work.
With best regards, Vladimir.

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  • 0 in reply to Vladimir Timohin

    Dear Keil Support!
    I wrote simple bootloader. And seems it's work.
    But when i download my firmware(0x10000 address) via button "Download".
    My bootloader is not start. And i see SWD communication error.
    But most interesting, that durind downloading it is write some data in 0x300 address.
    And after that my bootloader is not start.
    It's possible to fix it?

Reply
  • 0 in reply to Vladimir Timohin

    Dear Keil Support!
    I wrote simple bootloader. And seems it's work.
    But when i download my firmware(0x10000 address) via button "Download".
    My bootloader is not start. And i see SWD communication error.
    But most interesting, that durind downloading it is write some data in 0x300 address.
    And after that my bootloader is not start.
    It's possible to fix it?

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