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USB MSP-EXP430G2 from/to PC communication?

Matteo Abbia
Prodigy 10 points

I'm a Junior Programmer (waiting for my MSP-EXP430G2 LaunchPad kit), but I'm not an expert in Electronics.

How is it possible to make the PC Operating System (Shell or Programming Language) control MSP-EXP430G2 LaunchPad electric/electronic inputs/outputs?

Is it possible to do this using the USB port which is also used for programming the microcontroller?

Is there an easier way to do it?

For example, when an electric/electronic MSP-EXP430G2 LaunchPad input changes its state (receiving or ceasing to receive electric current), the PC Operating System can intercept this event doing something (sending an email), or when a PC Operating System event occurs (receiving an email containing a particular string), it can change a MSP-EXP430G2 LaunchPad electric/electronic output state (turning on a led): how?

Could you tell me where I can find information in this regard?

Thanks.

  • 0
    Genius 3770 points

    Hi Matteo,

    The Launchpad comes with a "back-channel" UART called the "MSP430 Applications UART", in which you can connect through the G2xx with Timer_A "software" UART.

    This is actually used by the demo firmware to transmit the measured temperature to the PC; see the source code for the firmware http://www.ti.com/lit/zip/slac435

    Also see the G2xx2 code examples for more on Timer_A UART http://www.ti.com/lit/zip/slac467

    Tony

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