LAUNCHXL-F28069M: LAUNCHXL-F28069M

Andrew Wenaus

Hi!

Is it possible that the datasheet pinout is just wrong?

I'm trying to map the GPIO pins to their respective pin number, but I'm getting conflicting information:

I'm toggling BIT12 (GpioDataRegs.GPATOGGLE.all |= BIT12;) and it is toggling the output of Pin#5. When I go to the C2000 Datasheet, it says GPIO20 is Pin #5. When I go to the F28069M Reference Guide, it says to toggle access GPIO20, toggle BIT20, and BIT12 should be GPIO12.

How can BIT12 control GPIO20? Or what am I doing wrong?

over 7 years ago

0 Ritvik Sadana1 over 7 years ago

TI__Intellectual 835 points

Hi Andrew,

I checked the User Guide for LAUNCHXL-F28069M ( http://www.ti.com/lit/ug/sprui11/sprui11.pdf ) It is correctly mentioned that Pin 5 is mapped to GPIO12.

Hence the code you are writing does exactly what is mentioned in the table.

Device Pin-out (seen in the datasheet) is different from the pin-out of the launchpad. You might be confusing one with the other.

In case you want to use, GPIO20 it is mapped to pin 45 on the launchpad.

Thanks

Ritvik

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LAUNCHXL-F28069M: LAUNCHXL-F28069M