DapiSpecialCommand(handle, DAPI_SPECIAL_CMD_SET_DIR_DX_1, 0, 0x0f , 0);
// Set Dir of TTL-I/O CH0-3 to output, others to input
DapiSpecialCommand(handle, DAPI_SPECIAL_CMD_SET_DIR_DX_1, 0, 0xff , 0);
// Set Dir of TTL-I/O CH0-7 to output, others to input
DELIB API reference | Seite 317