How to pull up/pull down GPIO Pins for Axon?


I am able to Access only 4 GPIO pins for my camera and control, those pins are 17 (GPIO_D0#), 18 (GPIO_D1#), 19 (GPIO_D3#), 20 (GPIO_D2#) them. But those pins are getting constant voltage i need to control the pins. overall i need to access total 8 GPIO pins.

Here, you can find documentation.

i want to control the GPIO pins via my code. Actually i am working with the camera detection so whenever it detect then it should be high otherwise low. For that i want to use more GPIO pins. Please let me know ASAP.