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CCS/TMS320F28335: Analog to Digital Conversion

Anshuman Tech
Intellectual 975 points

Part Number: TMS320F28335
Other Parts Discussed in Thread: CONTROLSUITE, TMDSDOCK28335

Tool/software: Code Composer Studio

Can anyone share the details about how to convert Analog signal to Digital signal to display on LCD? I am using pin ADCIN7B as input pin for Analog signal to the DSP controller. Voltage range is from 0 to 3.3 volt.

  • 0
    TI__Guru 62975 points
    Neeraj,

    For converting the input signal, you can use the "adc_soc" example in controlSUITE for reference. Keep in mind that the full-scale range of the F28335 ADC is 0V to 3.0V so you will saturate from 3.0V to 3.3V.

    I'm not aware of any preexisting TI examples for driving an LCD display. You will need to find or implement this driver on your own.

    If you just need a display for debug, some development boards like the TMDSDOCK28335 and TMDSPREX28335 include a user serial port interface through the USB emulator that is accessed through SCI. You should be able to output data to a computer terminal client.

    -Tommy