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DAC channel on the TMS320F2812

michel joel
Prodigy 70 points

Other Parts Discussed in Thread: TMS320F2812, SPRC097

hi,

is there a way to display signals from the TMS320F2812 on a Oscilloscope? In the datasheet there is no indication about the DAC channels .

Regards,

 

M.J

  • 0
    Guru 20525 points

    Hello,

    you can download C281x C/C++ Header Files and Peripheral Examples (SPRC097) from here http://www.ti.com/tool/sprc097.  "ev_pwm" is event Manager PWM example. This program sets up the EV timers to generate PWM waveforms. The user can then observe the waveforms using an oscilloscope.

    Regards,

    Igor

  • 0 in reply to Igor Gorbachev
    TI__Guru 57255 points

    Hello,

    You can use the EV Timers, as suggested by Igor, to output a PWM waveform.  If desired, you could configure the PWM to be very fast and then filter these PWM waveforms with an RC-filter (or similar) to get an analog output.

    (the magnitude of the analog output would then by 3.3*D where D is the Duty cycle of the PWM.  Assuming that the speed of the PWM and the RC-filter is chosen correctly you shouldn't see too much ripple)


    Thank you,
    Brett