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[SOLVED] MSP430 Programming - Connections

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sandbox

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Hi All,

Sorry for a noobish question i am working with the TI Launchpad board .

I have made a separate target board with another microcontroller and am using the Launchpad board to programme the target board. I was initially connecting the VCC, GND, RX, TX , TEST and RESET lines from the Launchpad to my target board. But just now I observed that the RX and TX lines are unnecessary while uploading new code onto the target board. How is the target board getting programmed with only the RESET and TEST lines?

Thanks in advance,
The Toymaker.
 

doraemon

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Hello!

I think you are talking about SPI bi-wire (SBW), which can be used instead of the regular JTAG.
There are probably many arcitles about SBW on TI's site.
Now, just to be sure about what you are doing: you mean that you are using launchpad as a
programming device, right? (You removed its processor or at least the jumpers, and use it to
program your board?). Basically if you just want to program your board, you don't have to care too
much about how it happens, it just works. If you are building a custom programmer, that's another
story.

Dora.
 

sandbox

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Thanks a lot ! We are just using it to program the target...
 

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