How to test 40 pin header without external devices

Hi,everyone
I want to test 40 pin header hardware without external devices,Does have any ideas about it.
Thanks to veryone

There is so much in that header I doubt anyone knows where to start. You might want to narrow the question down with something more specific, or what you want to accomplish.

There are spi \ i2c \uart\gpio\i2s in header, i want to test those pins work or not on carry board by software

hello jz_leetop,

there’s a python library that enables the use of Jetson’s GPIOs,
please refer to https://github.com/NVIDIA/jetson-gpio/tree/master/samples for samples to test all pins.
thanks