Hi, I was asking about how to send HCI commands over USB to the Bluetooth adapter in yesterday post "D-Link bluetooth usb adapter". It looks like I'm initializing IOUSBDevRequest wrong. The best I can came up with is the code below. It still doesn't work. After I issue HCI_Read_Buffer_Size command there is no any data on event pipe. I think my bRequestType or/and bRequest wrong and data is not get interpreted as an HCI command. HCI_Read_Buffer_Size is the first command I send to the adapter. Could somebody give me a hand on that? Thank you, Dmitri. bool write_command(void* data, int size) { bool ok = false; IOUSBDevRequestTO req; IOReturn err = 0; memset(&req, 0, sizeof(req)); // initialize request structure req.bmRequestType = USBmakebmRequestType(kUSBOut, kUSBClass, kUSBEndpoint); req.bRequest = BLUETOOTH_CONTROL_REQUEST_TYPE; //0x20 req.wValue = 0; req.wIndex = 0; req.wLength = size; req.pData = data; req.noDataTimeout = NO_DATA_TIMEOUT; // 5000 req.completionTimeout = NO_COMPLETION_TIMEOUT; // 5000 err = (*gIntf)->ControlRequestTO(gIntf, 0, &req); if (kIOReturnSuccess == err) { ok = true; printf("write_command: %d bytes written.\n", req.wLenDone); dump(req.pData, req.wLenDone); // for HCI_Read_Buffer_Size it is 05 04 00 - bin : 01010000. 00 (ocf 0x05) 000100 (ogf 0x04) 00000000 (param size 0) } else printf("write_command: failed with System: %04x, subSystem %04x, code: %04x.\n", err_get_system(err), err_get_sub(err), err_get_code(err)); return ok; } _______________________________________________ bluetooth-dev mailing list | bluetooth-dev@lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/bluetooth-dev Do not post admin requests to the list. They will be ignored.