TMS320F28379D: How to Create Virtual Ports

Meg Sindelar

Hi,

I am looking to create a group of random GPIO pins from the already mapped ports in the F2837xD_gpio.h header file. In the way I have figured out how to do this, as shown below, each GPIO pin is being updated one at a time. However, I am looking to update them all at once. Please let me know if there is a way to do this, thanks.

over 4 years ago

+1 Whitney Dewey over 4 years ago

TI__Guru 54415 points

There isn't really a way to update them on the exact same cycle unless they are in the same GPxSET register. You may be able to do some optimization to make the time between the writes a little smaller at least if some amount of delay is tolerable.

Whitney

0 Meg Sindelar over 4 years ago in reply to Whitney Dewey

Prodigy 20 points

Is there any way I can make a new GPxSET register or maybe even a struct for the desired GPIO pins?

+1 Whitney Dewey over 4 years ago in reply to Meg Sindelar

TI__Guru 54415 points

No, it's the location of the registers in the hardware. No matter how you write the structs in the C code, there's no instruction the CPU can execute to write to the different GPxSET register addresses at the same time.

Can you give me some background out what you're trying to do?

Whitney

0 Meg Sindelar over 4 years ago in reply to Whitney Dewey

Prodigy 20 points

This actually clears things up and I am moving forward in a slightly different direction, thank you for your help!

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TMS320F28379D: How to Create Virtual Ports