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MSP430FR2355: Blank Device Detection

Chris Lande
Expert 5935 points
Part Number: MSP430FR2355

Team,

Section 3.3.3 of the MSP430 FRAM Devices Bootloader (BSL) User's Guide states the following:

"The BSL entry sequence can be bypassed when the blank detection is enabled." 

Does this mean that  a blank device can bypass the BSL in some way? If so please will you explain this.

Thanks.

  • 0
    TI__Genius 12615 points

    Hi Chris,

    It's just the BSL entry sequence that's being bypassed - not the BSL itself.

    BR,
    Leo

  • 0 in reply to Leonardo Estevez
    TI__Expert 5935 points

    Hi Leo,

    Please will you explain the purpose of this in a bit more details. It you bypass the BSL entry sequence surely the BSL will not be entered.

    Thanks

  • 0 in reply to Chris Lande
    TI__Genius 12615 points

    Hi Chris,

    According to section 3.3.3:

    Blank Device Detection

    The boot code on the FR26xx, FR25xx, FR24xx, and FR23xx MCUs supports blank device detection to avoid the BSL entry sequence. This saves time and also eliminates the need for two additional wires (TEST, RST) for the BSL invocation sequence. The BSL entry sequence can be bypassed when the blank detection is enabled. The device jumps directly to the BSL and bypasses the entry sequence only when the reset vector has a value of 0xFFFF.

    Bypassing the entry sequence saves time and eliminates the need for two additional wires.

    BR,
    Leo

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