Changing GPIO clock speed?

[raz123]

After extensive tests, it appears that the GPIO speed is limited at ~6 mhz, and this, even with direct register toggling.
This speed does not change regardless of CPU speed (80 mhz or 160 mhz).

This leads me to think that the GPIO clock might be controlled by some divider along the line.
If so, is there any way to adjust that clock? Perhaps a special register that affects/controls the speed of the GPIO?


PS: If I have posted this in the wrong section, please move it to the appropriate one. Thanks!

[costaud]

After extensive tests, it appears that the GPIO speed is limited at ~6 mhz, and this, even with direct register toggling.
This speed does not change regardless of CPU speed (80 mhz or 160 mhz).

This leads me to think that the GPIO clock might be controlled by some divider along the line.
If so, is there any way to adjust that clock? Perhaps a special register that affects/controls the speed of the GPIO?


PS: If I have posted this in the wrong section, please move it to the appropriate one. Thanks!

In what kind of application do you need this high speed IO clock?

[raz123]

In what kind of application do you need this high speed IO clock?

In implementing USB connectivity.

[costaud]

In what kind of application do you need this high speed IO clock?

In implementing USB connectivity.

So you need 2 high speed IO, we shall think it over.

[raz123]

So you need 2 high speed IO, we shall think it over.

Any news?

[raz123]

May we get an update on the GPIO clock situation?

[amsjunior]

raz123, are you implementing USB straight from the ESP? Were you able to accomplish this?

[raz123]

raz123, are you implementing USB straight from the ESP? Were you able to accomplish this?

No, I have not been able.
Lack of cooperation from Espressif is a major setback.

[leo_ck]

Hi, has this problem been resolved yet? I am also looking for a GPIO clock speed issue, it's sad that the CPU can be clocked to 80MHz but I am limited to ~6MHz. Please advice some solution anyone.