I measured the GPIO3_PCC.00 singal is low by Oscilloscope but I tried to get value is not 0 by the following command. #cd /sys/class/gpio #echo 264 > export #cd gpio264 #cat value
1
If I want to pull high the signal, I can write 0 by the following command. #echo 0 > /sys/class/gpio264/value
I find the pin’s attribution as follows in Jetson_Xavier_NX_Pinmux_Configuration_Template_v1.06.xlsm.
You are right. The pin is default used as Baseboard BT Enable.
The pin is used as output pin. I don’t think it is the root cause.
GPIO03 126 SPI2_SCK GPIO3_PCC.00 100k pd GPIO3_PCC.00 Output Drive 0 N/A Disable Disable GPIO3 Baseboard BT Enable