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ADC help needed

sam22
Prodigy 170 points


hi all,

     I need to develop an application, in which i have to take the input from a system via serial port & then convert this value to Digital. Can anyone tell me how this can be done.

 

Sid

  • 0
    TI__Guru 64600 points

    Sid: There are many examples in the MSP430 code examples to showcase the capability of converting an analog signal into a digital value.
    However, your comment about "input from a system via serial port & then convert this value to digital" doesn't make sense to me, or at least how I interpret the term "serial port".

    A serial port is generally viewed as an interface that is digital which allows one to transmit digital data (ie. your value that you want).

    The code examples for the MSP430x2xx devices are in SLAC151.   http://www.ti.com/lit/zip/slac151

    What kind of serial interface do you need?  A UART, SPI, I2C?

  • 0 in reply to sam22
    TI__Mastermind 24390 points

    Hi,

    The UART protocol is digital already, you should be able to plug and play with a code example for USCI channel A0 in UART mode (provided your device has the USCI). It should only be noted that the input voltage levels are valid per the spec in the datasheet.

  • 0 in reply to Brandon08
    Prodigy 170 points

    I have to take the input from load cell, so i guess it will be via the breadboard on the Exp's board. After that i have to convert it into digital using ADC. How can this be done.

     

    The first thing i wrote was my bad..

  • 0 in reply to sam22
    TI__Guru 64600 points

    sam22 said:

    I have to take the input from load cell, so i guess it will be via the breadboard on the Exp's board. After that i have to convert it into digital using ADC. How can this be done.


    As mentioned before, the code examples are located in SLAC151.  http://www.ti.com/lit/zip/slac151

    There are example included that work with the on-chip ADC on the MSP430x2xx.  I would also recommend refering to the MSP430x2xx Family User's Guide to understand the mechanics of the ADC and how to relate the code examples.

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