Hi
How could I set IMX8MINI GPIO Pin input to high impedance (or float?) when I set no pull-up and pull-down, I measure voltage is 2.5V(with external resistor connect to 3V3), does that means internal still pull down?
This is want I got, I am not sure I set correct or not? if set correct what value could I get?
From NXP Errata ( MIMX8MM6DVTLZAA)for 3.3V IO operation using external resistors for pullup/pull down and disable the internal pull up/down via software.
I already set PE (Pull Resistors Enable) = 0 (disabled); ODE (Open Drain Enable) = 1 (enabled), and I found register value is 0x00000036.
I measured my GPIO input pin with an external resistor(pull up to 3.3V with 10k resistor) found it the vale still 2.5V.
I am confused, does that mean IMX8MINI not support 3.3V external or I am setting wrong. it likes like still internal pulldown.
Hello,
Is the pin really free - there is no externally connected parts on the board?
Regards,
Yuri.
Thank you very much, I'll try.
Hello,
use the following settings of corresponding Pad Control Register:
PE (Pull Resistors Enable) = 0 (disabled);
ODE (Open Drain Enable) = 1 (enabled).
Regards,
Yuri.