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TI Home » TI E2E Community » Support Forums » Microcontrollers » MSP430™ Microcontrollers » MSP430 Ultra-Low Power 16-bit Microcontroller Forum » Reconfiguration during execution
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    Reconfiguration during execution

    This question is answered
    kpbr
    Posted by kpbr
    on Jul 20 2008 16:52 PM
    Intellectual520 points

    Is it possible to reconfigure an MSP430 MCU during runtime? For example, I'd like to communicate to my MCU with my computer using the USCI. After I've sent a command via computer, I'd like the USCI to be configured for SPI. Is this possible?

    Thanks in advance,

    Jason

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    • BrandonElliott
      Posted by BrandonElliott
      on Jul 21 2008 15:21 PM
      Verified Answer
      Verified by Zack A
      Genius13815 points

      Jason,

       There are two possibilities here:

      1.  This could be built into your code as a user interface that parses case statements (flash is not modified). You can develop an interface that will RX commands and then configure the USCI as desired based on those inputs. There are several ways to accomplish this, such as using GPIO port interrupts.
      2. The second possibility I see is rewriting section of flash on the MSP430. If you know the section of memory that your USCI code resides it can certainly be rewritten. Alternatively you could reprogram the chip using JTAG or BSL. The below application reports will be helpful.

      JTAG: http://focus.ti.com/mcu/docs/mcusupporttechdocsc.tsp?sectionId=96&tabId=1502&abstractName=slaa149d

      BSL Features: http://focus.ti.com/mcu/docs/mcusupporttechdocsc.tsp?sectionId=96&tabId=1502&abstractName=slaa089d

      Application of the BSL in software: http://focus.ti.com/mcu/docs/mcusupporttechdocsc.tsp?sectionId=96&tabId=1502&abstractName=slaa096d

       The flashwrite codes at the following link illustrate how to rewrite portions of flash while your program is running: http://www.ti.com/lit/zip/slac123

      MSP430 MCU Microcontrollers Jtag BSL
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