LAUNCHXL-F28379D: PWM acess in the LAUNCHXL-F28379D

Victor Borges

Prodigy 90 points

Part Number: LAUNCHXL-F28379D

Hello,

I wanna know, how many PWMs channel I can to access in the LAUNCHXL-F28379D?

Thanks

over 7 years ago

0 Mark Labbato over 7 years ago

Guru 30330 points

Victor,

in the default positions on J2 and J6 we provide 6 PWMs in the regular places. A great thing about the C2000 is the very flexible GPIO multiplexing. Meaning, even though the Launchpad documentation may state that there are PWMS in certain places, each F2837x GPIO actually has up to 12 different peripherals that can be brought out to the same pin.

You can cross reference the pin mux tables of the F2837xD (found in http://www.ti.com/lit/sprs880 ) with the pinout of the LaunchPad which is found in http://www.ti.com/lit/sprui77 .

Thanks,
Mark

0 Victor Borges over 7 years ago in reply to Mark Labbato

Prodigy 90 points

First, thanks for your answer Mark.

Continuing the question, I've checked the documentation and in "http://www.ti.com/lit/sprs880" on "Table 4.3 - GPIO Muxed Pins", I found this:

GPIO14 -> EPWM8A (O) / SCITXDB (O) / MCLKXB (I/O) / OUTPUTXBAR3 (O)

In "http://www.ti.com/lit/sprui77" on "Table 8. F28379D LaunchPad Pin Out and Pin Mux Options - J8, J6", I found this:
GPIO14 -> OPXBAR3

So, this meaning even though the Launchpad documentation don't show the EPWM8A on your "Table 8", do I can configure the pin to work like a PWM?

Thanks,
Victor

0 Mark Labbato over 7 years ago in reply to Victor Borges

Guru 30330 points

Victor.

You are correct. See the first paragraph of Section 6.1 as well as note 1 on each of the Tables 5 through 8 in SPRUI77.

The per-pin usage is up to you. The TI BoosterPack standard is just a way to standardize the basic requirements for compatibility between boards. If you are making your own design or just learning the device, you obviously can manipulate the pin-mux as necessary to yours.

Thanks,
Mark

0 Victor Borges over 7 years ago in reply to Mark Labbato

Prodigy 90 points

Thanks Mark, your answers was really helpful.

Best regards,
Victor

0 Mark Labbato over 7 years ago in reply to Victor Borges

Guru 30330 points

Glad to help! If you encounter any more questions or issues later, please don't hesitate to create a new thread!

-Mark

C2000™︎ microcontrollers

C2000 microcontrollers forum

LAUNCHXL-F28379D: PWM acess in the LAUNCHXL-F28379D