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MSP430FR5962: Using BSL, how to update firmware without Mass Erase

Cruijff
Expert 2760 points
Part Number: MSP430FR5962
Other Parts Discussed in Thread: UNIFLASH

Hi community member,

I have a favor to ask.

Is it no problem to update firmware without Mass Erase on BSL?
If that is problem, is there a function to protect the main memory area with FRAM from Mass Erase?

My customer want to update the firmware version while the product is running.
Furthermore, they use software area and data area on FRAM based on TIDM-FRAM-EEPROM.
So, they want to use BSL to update firmware, but they don't want to write on data area.

Best regards.
Cruijff

  • 0
    TI__Mastermind 32920 points

    Hi,

    For BSL, we support to erase a certain memory area. If your customer use uniflash. You are realize this function by changing this setting:

    Eason

  • 0 in reply to Eason Zhou
    Expert 2760 points

    Hi Eason,
    Thank you for your reply!

    They don't use uniflash.
    They would like to update firmware(excepted for data area of FRAM) using UART BSL from a host CPU.

    According to MSP430 FRAM BSL User's guide(SLAU550Z), updating firmware need to mass erase.

    Is there how to protect a data area of FRAM from mass erase if the BSL is from host CPU?

    Best regards.
    Cruijff

  • 0 in reply to Cruijff
    Genius 4350 points

    I too am interested in this.  I think the answer is that there is no way to protect a part of the program FRAM on a mass erase.  But I don't see why you would need to do a mass erase on an FR device.  If you know the password, you should be able to simply overwrite the old firmware without erasing it first.  Does that not work?

  • 0 in reply to George Hug
    Expert 2760 points

    Hi George,
    Thank you for your comment.

    My customer don't have problem about BSL.
    They check BSL User's Guide.
    And they was just wondering if they needed sure mass erase.

    I also think that there is no problem if you follow the procedure below.

    1. Enter the RX password correctly (w / o mass erase)
    2. Overwrite a specific range of memory area

    Is my understanding correct?

    Cruijff

    . 

  • 0 in reply to Cruijff
    Genius 4350 points

    That sounds right to me.  But we'll have to see what Eason says.

  • 0 in reply to George Hug
    TI__Mastermind 32920 points

    You can overwrite a specific range of memory area without mass erase.

    You can use Memory Protection Unit (MPU) to protect a certain memory area. But if you use this function, using mass erase will cause a reset.

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