User manual

USB DrDAQ Programmer's Guide 31

3.5.22

UsbDrDaqGetInput

PICO_STATUS UsbDrDaqGetInput(

short handle,

USB_DRDAQ_GPIO IOChannel,

short pullUp,

short * value

)

This function is used to configure the general-purpose I/Os as digital inputs.

Arguments:

handle: handle returned from UsbDrDaqOpenUnit or

UsbDrDaqOpenUnitProgress

IOChannel: All GPIOs can be used for digital inputs.

pullUp: Used to specify whether pull-up resistor is used.

value: A location where the driver writes a value indicating the

state of the input (0 or 1)

Returns:

PICO_OK

PICO_NOT_FOUND

PICO_NOT_RESPONDING

PICO_INVALID_PARAMETER