The DlnGpioPinPullupIsEnabled()
function informs whether an embedded pull-up resistor is currently enabled for the specified pin.
Links:
[1] http://dlnware.com/dll/DlnGpioGetPinCount
[2] http://dlnware.com/dll/DlnGpioPinPullupEnable
[3] http://dlnware.com/dll/Pull-Resistors
[4] http://dlnware.com/dll/DlnGpioPinPullupDisable