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How to boot in bootloader mode for the first time?

nancy song
Intellectual 680 points
Other Parts Discussed in Thread: TM4C1294NCPDT

Hi all,

    When I get the tm4c1294ncpdt chip for the first time, how can I set  the chip into bootloader mode.Does the chip have a factory setting bootloader code in flash or rom which can not be modified by users?Does the chip have a trigger method to boot in bootloader?

  • 0
    Guru 11940 points

    Does the chip have a factory setting bootloader code in flash or rom which can not be modified by users?

    Yes.

    Does the chip have a trigger method to boot in bootloader?

    I suggest to read the datasheet, section 5.2.2.2.

    A similar kind of bootloader mechanism is implemented in all Cortex M products (and other MCU's as well). However, the actual implementation (method to determine code/bootloader entry, involved IO pins, supported channels and protocols) are vendor- and silicon-specific.

  • 0 in reply to f. m.
    Intellectual 680 points
    Hi f.m.
    Thanks!
    From the 5.2.2.2 about bootloader, i try to POR and held the PH7 pin HIGH.But I can't boot in booloader mode.I once booted the stm32 in bootloader mode ,so I kown some special trigger condition must be needed to implement the bootloader. Could have a much more detail in "the actual implementation " you said ? I may have a wrong understanding in ti bootloader.
    I connect the tm4c board to PC and POR and held the PH7 pin HIGH before I run the LMflash loader.
    I want to use the uart way not the stallias ICDI debug.Because I don't have any the ICDI in my own PCB board and only have the UART0.