Hi NV_Team,
We use GPIO17/GPIO35 as input on Jetson Xavier(software configure it as input gpio, and pull-down ).
If we input 0.6V signal to these gpio, it stays low stable.
If we input 3.3V signal to these gpio, it stays high stable.
But,
If we input 1.xV (such 1.0V) signal to these gpio, then read this pin 1 or 0, not stay in 0.
If we input 2.xV (such 2.3V) signal to these gpio, then read this pin 1 or 0, not stay in 1.
Why this happend? We want a stable state of the gpio input, whatever the input voltage changes.
root@xavier:/sys/class/gpio# cat /sys/kernel/debug/gpio | grep '417'
gpio-417 (GPIO17 |sysfs ) in lo
root@xavier:/sys/class/gpio# cat /sys/kernel/debug/gpio | grep '417'
gpio-417 (GPIO17 |sysfs ) in hi
root@xavier:/sys/class/gpio# cat /sys/kernel/debug/tegra_pinctrl_reg|grep 'pq1'
Bank: 0 Reg: 0x02430058 Val: 0x00000056 -> soc_gpio21_pq1
HW: Jetson Xavier Devkit
SW: L4T-R32.5
GPIO: Jetson-GPIO