U2C_GetIoDirection()

U2C_RESULT U2C_GetIoDirection(
      HANDLE hDevice,
      ULONG* pValue
);

The U2C_GetIoDirection() function obtains current input/output direction of the GPIO port pins.

Parameters:

hDevice

Handle to the U2C-12 device.

pValue

A pointer to unsigned long to be filled with the direction of the GPIO pins. pValue is treated as unsigned long 0xXXCCBBAA, where CC, BB and AA correspond to the C, B and A port pins:

AA bits 7..0 correspond to Port A pins 7..0
BB bits 7..0 correspond to Port B pins 7..0
CC bits 7..0 correspond to Port C pins 7..0
XX bits 7..0 reserved

Bit set to 1 indicates configuration of the corresponding pin as output. Bit set to 0 indicates configuration of the corresponding pin as input.

Return values:

U2C_SUCCESS

The GPIO pins direction was successfully read.

U2C_HARDWARE_NOT_FOUND

U2C-12 device referenced by hDevice handle was not found.

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