USB-I/O Interface Adapter GPIO-24. Programmer's Reference Manual.
2.2. Device communication functions
GPIO_RESULT GPIO_SendCommand( HGPIO hDevice, GPIO_COMMAND Command );
The GPIO_SendCommand() function sends the specified asynchronous command to GPIO-24 adapter. The application does not wait until GPIO-24 adapter executes the command and sends the response. Control is returned to the application immediately after the command is sent.
Parameters:
- hDevice
Handle to the device to send command to.
- Command
Specifies the command to be sent.
Return values:
- GPIO_S_SUCCESS
The command was successfully sent.
- GPIO_E_HANDLE
Invalid device handle has been provided.
- GPIO_E_FAIL
Failed to send command.
- GPIO_E_NOT_INITIALIZED
Library has not been initialized.
