DlnGpioPinGetDirection() Function

Syntax

C/C++
 DLN_RESULT DlnGpioPinGetDirection(
    HDLN handle,
    uint8_t pin,
    uint8_t* direction
 );

The DlnGpioPinGetDirection() function retrieves current direction of a GPIO pin.

Parameters:

handle
A handle to the DLN-series adapter.
pin
A number of the GPIO pin to retrieve the information from.
direction
A pointer to an unsigned 8-bit integer. The integer will be filled with the pin current direction after the function execution. Possible values:

Value Description
1 The pin is an output.
0 The pin is an input.

Results:

Result Description
DLN_RES_SUCCESS Pin direction has been successfully retrieved.
DLN_RES_INVALID_PIN_NUMBER Invalid pin number was specified.

This function is defined in the dln_gpio.h file.