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TM4C129ENCPDT: TI CORTEX M4 access external flash

Shlomi Yehezkia
Mastermind 6150 points
Part Number: TM4C129ENCPDT


Hi Team,

I am using TM4C129ENCPDT as my main processor.

I also uses 4MB of EXTERNAL-FLASH access over SPI bus.

 

I am looking for a way to easily program and burn data into the EXTERNAL-FLASH as part of manufacturing stage.

I have notice that LMFlash can access only internal FLASH and cannot access external FLASH (facilitating the SPI).

 

My questions are:

1.       Is that so, or there is a “secret” way to use the LMFlash to access also external-flash somehow?

2.       Is there is other tool that can burn external-flash (read/write) over same interface?

3.       What is the recommended way to do so, without first burning program into internal-flash?

 

Thanks,

Shlomi

 

  • 0
    TI__Guru**** 191906 points

    Hi,

    Shlomi Yehezkia said:

    1.       Is that so, or there is a “secret” way to use the LMFlash to access also external-flash somehow?

    2.       Is there is other tool that can burn external-flash (read/write) over same interface?

    3.       What is the recommended way to do so, without first burning program into internal-flash?

      The LMFlash programmer cannot be used to program the external flash. Take a look at the TivaWare Utilities Library user's guide on chapter 18 for SPI Flash programming. <TivaWare_installation>/docs/SW-TM4C-UTILS-UG-2.0.pdf. Your external flash can only be programmed by the MCU via the SPI interface. If the MCU is not first programmed with the firmware, how can it program the external flash?