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TM4C1294XL - EVM QUERY

Janani Baskar
Intellectual 330 points

Hi,

Can any one please tell me how to check the pwm signal on this evm model? How can i check the PWM signal on an oscilloscope from this EVM?

  • 0
    TI__Guru**** 196566 points

    Hi Janani,

    Do you use TI TM4C1294 launchpad or use your own board? On TI Launchpad, the 8 PWM signals are routed to the headers. Tiva ware also provides a PWM sample code at C:\ti\TivaWare_C_Series-2.1.2.111\examples\peripherals\pwm

    Connect your probe's ground clip to the GND (several GNDs on the headers), and the probe tip to the signal output (PWM0..7). As sson as you connect both parts of the probe, you should see the signal begin to dance around your oscilloscope screen. If your wave is not stable, try rotating the trigger position knob. Make sure the trigger isn't higher than the tallest peak of your waveform. By default, the trigger type should be set to edge, which is a good choice for square waves.

    Regards,

    QJ

  • 0 in reply to QJ Wang
    Intellectual 330 points

    Hi,

    I can find it in my c drive but i cannot open it in CCS. Can you help?

  • 0 in reply to Janani Baskar
    Guru 117855 points

    Poster's (latest) wanders FAR (very far) from his listed subject.   One suspects that "finding" a PWM signal - w/in "c drive" - registers as "unusual"...

  • 0 in reply to Janani Baskar
    TI__Guru**** 244400 points
    Hello Janani,

    You will have to create a CCS project and then copy the pwm.c file to your project. Are you well versed with creating a new CCS project?

    Regards
    Amit