The device we are interfacing with requires that the processor interrupt line is tied to VCC via a pull up resistor. I just wanted to know is it possible to configure GPIO5 to have a pull up? And if so what value is it.
The Ixora board itself has no pull-up or pull-down resistors on GPIO5 circuit. And has no ability to configure them on software level. Hower it can be configured on SOM level. In case of the Apalis iMX8 the GPIO5 (X1 pin 11) configured with pull-up. Please check for details here.
Thanks for reply, What is the value of this pull-up? I can’t find it in the linked documents.
Hi gearoidwbd,
the pullups are between 10K and 100K according to the NXP datasheet.
you configuration for the pullup on gpio5 should be 18000020 hex
Best Regards,
Matthias Gohlke
Hi Matthias,
I had a look at NXP Datasheet, it says no pull up/downs on 3.3V GPIO’s, can you confirm this?
Hello gearoidwbd,
which datasheet ? check table 32
Best Regards,
Matthias Gohlke