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basil4j

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Posts posted by basil4j

  1. Hi All,

     

    I'm new to the MSP430 and am looking at using some for a device I am developing. I will be using a handful of MSP430's on modular boards to perform various functions.

     

    Some of the modular boards will be required to perform floating/fixed point multiplication and division.

    I am trying to determine if I could get away with using an MSP device without hardware multiply to achieve these goals to keep the cost down.

     

    Here are rough details of 2 of these boards (All FP and int are 16bits)

    The calculations are in no particular order.

     

    *Board 1, at 40 Hz, i.e. every 25ms

    Receive 2x16bits from SPI sensor

    Output 3x16bits serial onto external BUS (format to be defined)

    Perform 2x FP/INT divide

    Perform 1x FP/INT Multiply

    Perform 2x FP/INT subtract

    Perform 2x FP/FP divide

    Perform 2x FP/FP Multiply

    Perform about 6-8 FP =,> or < comparisons

     

    *Board 2, at 400Hz, i.e. every 2.5ms

    Receive 16 bits from SPI sensor

    Output 2x16bits serial onto external BUS (format to be defined)

    Perform 2x FP/INT divide

    Perform 1x FP/INT Multiply

    Perform 2x FP/INT subtract

    Perform 2x FP/FP divide

    Perform 4x FP/FP subtract

    Perform about 8-10 FP =,> or

     

    I think that's it. Do you think an MSP device at 16Mhz could handle this without hardware multiply?

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