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MSP430F2274: Using msp430 as programmer and debugger to program a msp430f2274

Brayan Khosravian
Prodigy 110 points
Part Number: MSP430F2274
Other Parts Discussed in Thread: MSP-FET

Hi, I ordered a msp430f2274 chip and created a breakout board to program and debug the chip with a msp430 lounchpad. 

I know that the msp430 lounchpad uses spy by wire, but I can't find where it is documented to use the msp430 as programmer and debugger. 

Sincerely

  • 0
    Guru 34453 points

    You just need to remove jumpers on LP to disconnect SBW from LP target device, and connect RESET / TEST / VCC / GND from LP board (FET part) to your 2274 breakout.

    If you want to know more about SBW interface, it is covered by slau320. You can also build your own FET...

    forum.43oh.com/.../

  • 0 in reply to zrno soli
    Prodigy 110 points

    ok ty for your reply. i saw some using capasitors while some dont use them. are the capasitors really needed?
    and is it able to debug the extern IC from the LP using the pins u mentioned?

  • 0 in reply to Brayan Khosravian
    TI__Genius 14675 points

    Hello,

    Figure 2-3 of the MSP430 Hardware Tools User's Guide depicts the required circuitry for programming an MSP430 device using an MSP-FET. As explained above, you could also use the VCC, GND, SBWTCK, and SBWTDIO pins of a Launchpad to program the device. The eZ-FET circuitry is explained in the user's guide for the respective Launchpad you are using. The device used in the eZ-FET programmer circuit is the MSP430F552x because it has an integrated USB PHY. The embedded firmware for all of our debugging circuits can be found in the MSP Debug Stack

    Best regards,

    Matt

  • 0 in reply to Brayan Khosravian
    Guru 34453 points
    You should put 47k pull up on RESET pin, and max 1nF cap between RESET pin and ground, on your breakout board. You can update flash and debug device on your board identically as target device on LP board.
  • 0 in reply to zrno soli
    Prodigy 110 points
    thank you all for your replies.
    i dont got a 1nf capasitor handy.
    ill use another g2553 chip without the capasitor and see if it works temporary

    ill reply if it worked

    Sincerely Brayan

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