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CCS/TMS320F28379D: TMS320F28379D

Zac Milne
Prodigy 155 points

Part Number: TMS320F28379D
Other Parts Discussed in Thread: SFRA,

Tool/software: Code Composer Studio

Section 7.3.5 of the "Dual Motor Control Using FCL and Performance Analysis Using SFRA on TMS320F28379D LaunchPad" application report talks about a PWM DAC Utility that shows the encoder feedback angle. Where can I get this PWM DAC Utility?

  • 0
    TI__Mastermind 27240 points
    PWM DAC is a crude DAC built using on chip PWM and an external RC low pass filter. The PWM carrier frequency is about 100KHz, whereas the ISR frequency is about 10-20KHz. This will mean the PWMDAC will have an update of 10 or 5 depending on the ISR frequency. This should be good enough for visualizing the variables used in the system. If you to increase the PWMDAC update rate by increasing the carrier frequency, then the data bit size will reduce. It is a trade off between resolution and update rate. Verify the schematic of the launch pad for details.
  • 0 in reply to Ramesh Ramamoorthy
    Prodigy 155 points

    I was wondering if there is a GUI which should the PWN DAC signal, such as the one shown in the application note.

  • 0 in reply to Zac Milne
    TI__Mastermind 27240 points
    In section 7.3.5 of the AN that you referred to, the picture is a scope plot and not GUI.

    Let us know if you have any other queries here otherwise pls click resolved to close the thread.