U2C_RESULT U2C_GetSingleIoDirection(
HANDLE hDevice,
ULONG IoNumber,
BOOL* pbOutput
);
The U2C_GetSingleIoDirection() function obtains input/output direction of the specified GPIO pin.
Parameters:
- hDevice
Handle to the U2C-12 device.
- IoNumber
The number of the GPIO pin to obtain direction:
- Numbers 0..7 correspond to Port A pins 0..7
- Numbers 8..15 correspond to Port B pins 0..7
- Number 16..23 correspond to Port C pins 0..7
- pbOutput
A pointer to the boolean to be filled with the direction of the GPIO pin:
- *pbOutput = TRUE indicates that the GPIO pin is configured for output
- *pbOutput = FALSE indicates that the GPIO pin is configured for input
Return values:
U2C_SUCCESS
The GPIO pin direction was successfully read.
U2C_HARDWARE_NOT_FOUND
U2C-12 device referenced by hDevice handle was not found.
U2C_BAD_PARAMETER
IoNumber is out of range.