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MSP430G2 GPIO data rate

Abhishek Tiwari61
Intellectual 335 points

Hi ,

I am Using a MSP 430G2 Board for MUX and Demux of two RS-232 channels to one.Plz. find the Design attatched herewith.I hade written a Small Piece of code for the same as attached.I had implemented this logic using only GPIOs.

Here My problem is that it is working well only at 9600 baud rate.And any rate higher the data is getting currupted.

Plz. help me in knowing do I need do any clock frequency setting to increase the speed of GPIO .plz. calrify.Block-Architecture.doc

  • 0
    Guru 74080 points

    Hi Abhishek!

    Although I do not completely understand the purpose of your application, you can increase the processing speed of your MSP up to 16MHz by adding the two lines

    BCSCTL1 = CALBC1_16MHZ; // Set range to calibrated 16MHz
DCOCTL  = CALDCO_16MHZ; // Set DCO step and modulation to calibrated 16MHz

    after stopping the watchdog. When the clock is not initialized, the MSP runs at about 1MHz (might be slightly lower).

    Dennis

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