Programming Info D2XXPG31.pdf

11 D2XX Programmer's Guide2.4 FT_OpenOpen the device and return a handle which will be used for subsequent accesses.FT_STATUS FT_Open (int iDevice, FT_HANDLE *ftHandle)ParametersiDevice Must be 0 if only one device is attached. For multiple devices 1,2 etc.ftHandlePointer to a variable of type FT_HANDLE where the handle willbe stored. This handle must be used to access the device.Return ValueFT_OK if successful, otherwise the return value is an FT error code.RemarksAlthough this function can be used to open multiple devices by setting iDevice to 0, 1, 2 etc. thereis no ability to open a specific device. To open named devices, use the function FT_OpenEx 12 .ExampleThis sample shows how to open a device.FT_HANDLE ftHandle;FT_STATUS ftStatus;ftStatus = FT_Open(0,&ftHandle);if (ftStatus == FT_OK) {// FT_Open OK, use ftHandle to access device}else {// FT_Open failed}© Future Technology Devices International Ltd. 2005