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TMS320F28379D: ESP32 Interface

TI-CSC
Genius 11210 points
Part Number: TMS320F28379D

Tool/software:

Hello E2E Experts,

Good day.

We have a research project and we are using C2000 LaunchPad TMS320F28379D
VER 2.0 together with Arduino Nano ESP32.

The concept is the ESP is interface to Cloud and C2000 is used to operate inverter.

We would like to send ESP digital out to C2000 digital in GPIO111 J1-6.

As both systems operate on 3.3V IO, can I connect direct ESP32 to C2000 ? Or alternatively do you have application note for this case?

Regards,

Ti-CSC

  • 0
    TI__Mastermind 21290 points

    Hi Ti-CSC,

    The following table from the launchpad user's guide details the different ways to power the launchpad:

    Let me know if you have additional questions.

    Thank you,

    Luke

  • 0 in reply to Luke Jones
    TI__Genius 11210 points

    Hello Luke,

    Good day.

    The 3.3V power supply comes from C2000, which is powered by a USB cable connected to a laptop.

    The C2000 voltage regulator provides power to ESP32. This part is working fine.

     The essence of my question is that I would like to connect the digital output of ESP 32 to GPIO111 of C2000, is this ok?

    The reason for this is that ESP32 is connected to the Cloud with remote logic and C2000 is only used as a generator of ePWM. If cloud logic is interrupted the ESP32 logic is impacted and we would like to send digital out from ESP to C2000 to kill PWM channels.

    Regards,

    TI-CSC

  • 0 in reply to TI-CSC
    TI__Mastermind 21290 points

    Hi TI-CSC:

    If GPIO111 is an input and the ESP 32 and C2000 DEVICE share a common ground and the digital output of the ESP 32 is less than 3.3V, then this should be fine.

    thank you,

    Luke