GPIO Matrix Document Available

[WiFive]

Some information on gpio matrix signals has been published. Looks like all digital signals are included, which is nice.

There seems to be a missing page to the document at this time. A version of the io_MUX page was in a previous version of the document but isn't shown in this version. It is referenced in the notes, however.

Analog and Ethernet (for the most part) pins are fixed
Gpio 34-39 are input only no pullups/pulldowns


http://espressif.com/en/support/download/overview

[WiFive]

This has been fixed, missing page is added.

[a2retro]

Are all pin uses mutually exclusive or may some be overlapped during use somehow?

[ESP_Sprite]

Are all pin uses mutually exclusive or may some be overlapped during use somehow?

Outputs are mutually exclusive, for obvious reasons. Inputs can be shared in the GPIO matrix, that is, you connect one GPIO pin to multiple peripheral inputs. You can also connect a pin to the output of one peripheral and to the input of another. I don't think the IO-mux allows sharing of pins, so if you need to share something with a peripheral that's only on the IO-mux you may be out of luck.

[a2retro]

Hi Thanks for clearing up the pin usage.

Is there a spreadsheet compatible version of the i/o mux table on page 4?

[a2retro]

Hi all, I created a xls spreadsheet from the esp I/O pin matrix PDF file. Please let me know if you find any errors. It may help someone when planning i/o for your project.

If Espressif posts official version I will be happy to remove this file.

Glenn