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CCS/MSP430FR5739: Unable to program using newer debuggers MSP-FET

Russell Merrick
Intellectual 260 points
Part Number: MSP430FR5739
Other Parts Discussed in Thread: MSP-TS430RHA40A, MSP-FET, , MSP430FR2433

Tool/software: Code Composer Studio

I have three debuggers (MSP-FET), two of which are the new version (SN 18XXXXX) and one is the old version (SN 16XXXXX).  I am using CCS v7.2.  I am trying to program the MSP430 Development board MSP-TS430RHA40A using both programmers but only the OLD version is working.  I've tried both new debuggers on two different computers and I simply cannot get the new version of MSP-FET to work correctly.  Here's the error I get with the new version: Error connecting to the target: Unknown device.  

  • 0
    TI__Expert 7530 points

    Hi Russell,

    I ran the same tests that you are running and I have confirmed your result.  The latest MSP-FET has a connection issue with the MSP430FR5739 device in SBW mode.  We are investigating root cause for the connection issue now.  I was able to connect successfully with the latest MSP-FET using 4-wire JTAG mode.  You can select 4-wire JTAG mode by moving the relevant jumpers from the SBW position to the 4-wire JTAG position on the target board.

    I'll keep you up to date as we dig into the root cause.  I also confirmed that the MSP-FET works in SBW mode with other FRAM devices (e.g. the MSP430FR2433), so the issue at the moment seems to be SBW mode with the MSP430FR57xx family.

    Regards,
    Walter

  • 0 in reply to Walter Schnoor
    Intellectual 260 points
    Thank you Walter, glad to hear I'm not crazy. Hope you're able to get to root cause on this one.
  • 0 in reply to Russell Merrick
    TI__Expert 7530 points
    Hi Russell,

    As a quick update, we have narrowed down the issue to the RST/SBWTDIO signal. Specifically, the capacitance present on that bi-directional net which affects the rise and fall times during debug. Right now it's looking like a timing problem with that target board / device / MSP-FET combination. I'll continue to keep you posted.

    Regards,
    Walter

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