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BSL Questions for MSP430F47183

Prodigy 180 points

Replies: 3

Views: 848

Hi Folks,

I am trying to write a custom BSL that uses a different peripheral interface for the MSP430F47183.  The documents I have been reading only refer to the F5xx family when discussing custom BSLs in specific BSL flash segments.

Is there a specific BSL Flash location for my chip?  And is there a way I can tell the JTAG not to erase certain parts of flash when I debug through Code Composer Studio 5?  Can I choose where in memory to load the program into?

Ehsun

  • Teh main purpose of the BSL is that it is outside the applicaiton flash area and therefor always available no matter what you do in teh applicaiton area-
    On most MSPs, the BSL is in ROM. Only the 5x family has it in a separate, independent Flash that is protected against mass erase and accidental execution.

    You can, of course, write code for other MSPs where a new firmware is downloaded and installed through a normal program, uing any type of interface you can imagine, but this doesn't provide the foolproof functionality of a 'real' BSL. Imagine the BSL being sort of the BIOS chip of a PC mainboard. Only on 5x devices, it is an EEPROM, on all others, it is a ROM soldered on the board. Independent of what OS you put on your disk, as long as it is on an IDE drive. Boot from USB or SATA not supported :)

    _____________________________________

    Time to say goodbye - I don't have the time anymore to read and answer forum posts. See my bio for details.

    Before posting bug reports or ask for help, do at least quick scan over this article. It applies to any kind of problem reporting. On any forum. And/or look here.
    I'm sorry that  I can no longer provide help  in the forum or by private conversation.

  • In reply to Jens-Michael Gross:

    Ah okay, I see.  So if I understand you correctly, for the hardware I am using, there is no way I can update the BSL on my chip since it is burned into ROM.  My only option (if I wanted a custom BSL) is to write set a space in flash for it and make sure never to write over it.  Is that correct?

  • In reply to Ehsun:

    Hi Ehsun,

    you have understood it correctly. I would suggest you also to take a look at the following wiki page:

    http://processors.wiki.ti.com/index.php/BSL_%28MSP430%29#General_Custom_BSL_FAQ

    Hope this helps.

    Regards,

    Leo Hendrawan

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