We attempted to run a burn-in test while connected to our MacBook Pro M4 Max, but this crashed about 10 minutes into testing. Can Action Star see if you are able to run a 2-hour burn-in on your own M4 Max host while charging the battery from below 5%, running six bus-powered drives (via ATTO/Black Magic/IOmeter), hitting the RJ45 port for 2.5Gbps (via JPerf), and streaming at least 4K60Hz video content to two displays? Please measure the outer temperature on the hottest part of the enclosure as well.

I have poked around the web looking for a good example to do this and I haven't found a working example. I need to connect to a USB Device, its multiple ports and supports what looks to be a root port and 4 other ports I am no expert in USB but I do know how to write a kext and client drivers, but thats really not the way to solve this. I need to display the serialized output from these USB ports for a development board. I would rather do this on my Mac than have to cobble up a Linux machine and mess around with Linux. Here is the output from ioreg MCHP-Debug@03100000 <class IOUSBHostDevice, id 0x105f6fdc2, registered, matched, active, busy 0 (20 ms), retain 27> MCHP-Debug@0 <class IOUSBHostInterface, id 0x105f6fdc8, registered, matched, active, busy 0 (13 ms), retain 5> +-o MCHP-Debug@0 <class IOUSBHostInterface, id 0x105f6fdc8, registered, matched, active, busy 0 (13 ms), retain 5> +-o MCHP-Debug@1 <class IOUSBHostInterface, id 0x105f6fdc9, registered, matched, active, busy 0 (11 ms), retain 5> +-o MCHP-Debug@2 <class IOUSBHostInterface, id 0x105f6fdcb, registered, matched, active, busy 0 (9 ms), retain 5> | | | | | +-o MCHP-Debug@3 <class IOUSBHostInterface, id 0x105f6fdcc, registered, matched, active, busy 0 (7 ms), retain 5> I have been able to open a inservice to the device at the top level, but I get an error when I use. usbHostInterface = [[IOUSBHostInterface alloc] initWithIOService:usbDevice options: IOUSBHostObjectInitOptionsNone queue: queue error: &error interestHandler: handler]; Error:Failed to create IOUSBHostInterface. with reason: Unable to obtain configuration descriptor. Assertion failed: (usbHostInterface), function main, file main.m, line 87. I started using DeviceKit but I received signing errors and I shouldn't have to go down that path just to dump data from a USB port? Any suggestions would be great, most of the Apple documentation on USB ports is like 20 years old and the new stuff pushes you towards DeviceKit.

腾龙镜头注册流程--薇---1847933278--旨在确保用户能够享受到官方提供的保修、客户支持和专属优惠。以下是注册腾龙镜头的一般步骤，具体流程可能因地区而异。 注册准备 购买渠道： 确保从授权经销商处购买镜头。 所需信息： 准备好镜头的序列号、购买日期和购买凭证（如发票或收据）。 注册步骤 访问官方网站： 前往腾龙官方网站，通常有专门的镜头注册页面。根据您所在的地区选择相应的网站（例如，腾龙美国、腾龙欧洲等）。 创建账户 / 登录： 如果是首次注册，您可能需要创建一个用户账户。如果已有账户，直接登录即可。 填写注册信息： 在注册页面上，填写镜头的所有必要信息，包括序列号、购买日期、购买地点等。 上传购买凭证： 按照网站指示上传购买凭证的扫描件或照片。 提交注册： 仔细检查填写的信息，确认无误后提交注册。 等待审核： 提交后，您可能会收到一封确认邮件。腾龙可能会审核您的注册信息，并在几个工作日内通知您注册结果。 注册完成后的权益 延长保修期： 在某些地区，注册后可以享受额外的延长保修服务。 参与活动： 获得参与腾龙举办的促销活动、研讨会和新品发布会的资格。 接收资讯： 订阅腾龙的电子新闻，获取最新的产品信息和优惠。

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I need the USB Host Controller Interface Specification for Apple Silicon to develop low-level USB communication on iOS,could you send me the link to the document?

1) The circumstances: iPADOS~>18, USB still-imaging-gadget, 1-3 gadgets might connect simultaneously via USB-hub, proprietary DExt, UserClient App in developers' iPADs or in TestFlight. = 1 variation A) UserClientApp has attribute [Background modes][Enable external communications]. = 1 variation B) "active USB-hub" vs "passive". = 1 variation C) "ConsoleApp logs iPAD" vs "ConsoleApp is not started". = 1 the term "zombie" below assume issue: == after plug-in ConsoleApp logs "IOUsbUserInterface::init", "::start"; == UserClient never receives respective callback from IOServiceAddMatchingNotification == further IOKit APIs "teardown", "restart" and "re-enumeration of connected gadgets" doesn't reveal the zombie (while it sees another simultaneous gadget); == unplug of the gadget logs "IOUsbUserInterface::stop". =2) The situation when UserClient is in foreground: ~ everything is fine. Note in MAC OS everything (same DExt and UserClient-code) works fine in background and in foreground. =3) The situation when UserClient is in background (beneath ~"Files" or "Safari"): =3A) "1A=true" phys plugin causes zombie in ~1/20 cases (satisfactory) =3B) "1A=false" phys plugin causes zombie in ~1/4 cases (non-satisfactory) =3C) "1 variation B" and "1 variation C" reduce zombies by ~>30%. =3D) ConsoleApp logs with filter "IOAccessory" (~about USB-energy) always look similar by my eyes. =4) From Apple-store: "The app declares support for external-accessory in the UIBackgroundModes"..."The external accessory background mode is intended for apps that communicate with hardware accessories through the External Accessory framework."..."Additionally, the app must be authorized by MFi," =5) My wish/ask: =5 option A) A clue to resolve the "zombie-plugin-issue in background" in a technical manner. = E.g. find a straightforward solution that ~elevates UserClient's "privileges" in background like [Enable external communication]... E.g. what ConsoleApp-logs to add/watch to reveal my potential bugs in DExt or in UserClient? =5 option B) A way to pursue Apple-store to accept (without MFI) an UserClientApp with [Enable external communication].

Hi, This is the code snippet in my driver for an usb uart device. I am trying to call standard cdc-acm command to set the Line Coding in the device, but fails with this error: "USBSendSetLineCoding - Failed : 0xe0005000, bytes transferred: 0" I guess the USB device is returning this error due to incorrect buffer or format. There is no proper documentation on how to use IOMemoryDescriptor when the data has to be passed down in a buffer to the usb stack. (IOUSBHostInterface->DeviceRequest()) Can anyone please point out what is wrong with this code and suggest a right method? void MyDriver::USBSendSetLineCoding(uint32_t BaudRate, uint8_t StopBits, uint8_t TX_Parity, uint8_t CharLength) { kern_return_t ret = kIOReturnSuccess; LineCoding *lineParms; uint16_t lcLen = sizeof(LineCoding)-1; lineParms = (LineCoding *)IOMalloc(lcLen); if (!lineParms) { MyDebugLog("USBSendSetLineCoding - allocate lineParms failed"); return; } bzero(lineParms, lcLen); lineParms->bCharFormat = StopBits - 2; lineParms->bParityType = TX_Parity - 1; lineParms->bDataBits = CharLength; OSSwapBigToHostInt32(BaudRate); lineParms->dwDTERate = BaudRate; IOBufferMemoryDescriptor* bufferDescriptor = nullptr; _controlInterface->CreateIOBuffer(kIOMemoryDirectionOut, lcLen, &bufferDescriptor); IOMemoryMap *map = nullptr; bufferDescriptor->CreateMapping(kIOMemoryMapReadOnly, 0, 0, 0, 0, &map); if(map == nullptr) { MyDebugLog("USBSendSetLineCoding - Failed to map memory in CreateMapping\n"); IOFree(lineParms, lcLen); bufferDescriptor->release(); return; } uint64_t ptr = map->GetAddress(); if(!ptr) { MyDebugLog("USBSendSetLineCoding - Failed to get Memory Address\n"); IOFree(lineParms, lcLen); bufferDescriptor->release(); map->release(); return; } memcpy(&ptr, lineParms, lcLen); uint8_t bmRequestType = kIOUSBDeviceRequestDirectionOut | kIOUSBDeviceRequestTypeClass | kIOUSBDeviceRequestRecipientInterface; uint16_t wValue = 0; uint16_t wIndex = _bControlInterfaceNumber; uint16_t bytesTransferred = 0; ret = _controlInterface->DeviceRequest(bmRequestType, kUSBSET_LINE_CODING, wValue, wIndex, lcLen, bufferDescriptor, &bytesTransferred, 1000); IOFree(lineParms, lcLen); map->release(); bufferDescriptor->release(); if (ret != kIOReturnSuccess) { MyDebugLog("USBSendSetLineCoding - Failed : 0x%x, bytes transferred: %d\n", ret, bytesTransferred); return; } return; } I am able to call DeviceRequest() successfully on the same interface for any other setting that requires no data buffer, such as, "ret = _controlInterface->DeviceRequest(bmRequestType, kUSBSEND_BREAK, wValue, wIndex, 0, NULL, &bytesTransferred, 1000);" So I think the "bufferDescriptor" is not properly created or the data is not copied correctly in this function for the failure. "ret = _controlInterface->DeviceRequest(bmRequestType, kUSBSET_LINE_CODING, wValue, wIndex, lcLen, bufferDescriptor, &bytesTransferred, 1000);" Any help is very much appreciated. Thanks in advance.

Every week or so, mouse driver locks up. The LED laser goes out and none of the buttons operate. It's a generic 7 button USB mouse with my USB keyboard still active. I do not know what precipitates the lockup and a system diagnostic request (Sft-Alt-Ctl-Cmd .) does not seem to yield anything useful. > ps -ef|grep -i mouse 501 579 1 0 Mon01PM ?? 0:04.42 /System/Library/ExtensionKit/Extensions/MouseExtension.appex/Contents/MacOS/MouseExtension code-block so the mouse extension was running at the time. With a "sudo kill -HUP 579" it did not restart. Also, switching to a different mouse did no good. The mouse driver was behaving like it was deadlocked and I didn't know the correct incantation for restarting it. I power cycle reset the box. SO: you have a mouse driver problem it cannot be just me It behaves like a deadlock, but not knowing how to get a mouse driver dump, I cannot tell what lock(s) its waiting for.

<Version / Build> macOS 26 beta 4 (25A5316i) usbaudiod.txt CMAudioFormatDescriptionCreate.txt

Hello everyone, We're working on an iOS app that needs to connect to a non-Apple pre-operating system using USB for serial communication. Our goal is to send and receive data between an iPhone and a UEFI-based system directly over USB. We've created a proof of concept using the USBMux protocol, which let us exchange basic messages. However, we're running into problems with the USB endpoint setup. In some cases, the USB communication doesn't start or stay connected. Since this is for a pre-boot environment, it might not fit into the usual iOS USB communication frameworks. We're looking for help with the following: Any guidance or documentation on setting up USB serial communication between an iPhone and a non-Apple pre-boot system Information on system APIs, frameworks, or protocols that iOS supports for direct USB communication in this scenario Access to official USBMux documentation or specs to understand its limitations and capabilities better Whether this communication requires MFi certification or if there are other Apple-supported interfaces we can use Thank you!

Can i use iokit usb lib to disable build-in camera?

I developed a driverkit extension based on overriding-the-default-usb-video-class-extension, but the link didn’t give the details of realization. I asked DTS who gave two tips: 1, Do you also have a CMIO extension to load in place of the default overriding-the-default-usb-video-class-extension 2, Your DriverKit extension’s info.plist is also missing the CameraAssistantBundleID. I want to know why a driverkit extension needs a CMIO extension, what’s the data and control flow?

When I use IOKit/usb/IOUSBLib to toggle build-in camera, I got an ERROR:ret IOReturn -536870210 How can I resolve it? Can I use IOUSBLib to disable or hide build-in camera? My environment: Model Name: MacBook Pro ProductVersion: 15.5 Model Identifier: MacBookPro15,2 Processor Name: Quad-Core Intel Core i5 Processor Speed: 2.4 GHz Number of Processors: 1 // 禁用/启用USB设备 bool toggleUSBDevice(uint16_t vendorID, uint16_t productID, bool enable) { std::cout << (enable ? "Enabling" : "Disabling") << " USB device with VID: 0x" << std::hex << vendorID << ", PID: 0x" << productID << std::endl; // 创建匹配字典查找指定VID/PID的USB设备 CFMutableDictionaryRef matchingDict = IOServiceMatching(kIOUSBDeviceClassName); if (!matchingDict) { std::cerr << "Failed to create USB device matching dictionary." << std::endl; return false; } // 设置VID/PID匹配条件 CFNumberRef vendorIDRef = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt16Type, &vendorID); CFNumberRef productIDRef = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt16Type, &productID); CFDictionarySetValue(matchingDict, CFSTR(kUSBVendorID), vendorIDRef); CFDictionarySetValue(matchingDict, CFSTR(kUSBProductID), productIDRef); CFRelease(vendorIDRef); CFRelease(productIDRef); // 获取匹配的设备迭代器 io_iterator_t deviceIterator; if (IOServiceGetMatchingServices(kIOMainPortDefault, matchingDict, &deviceIterator) != KERN_SUCCESS) { std::cerr << "Failed to get USB device iterator." << std::endl; CFRelease(matchingDict); return false; } io_service_t usbDevice; bool result = false; int deviceCount = 0; // 遍历所有匹配的设备 while ((usbDevice = IOIteratorNext(deviceIterator)) != IO_OBJECT_NULL) { deviceCount++; // 获取设备路径 char path[1024]; if (IORegistryEntryGetPath(usbDevice, kIOServicePlane, path) == KERN_SUCCESS) { std::cout << "Found device at path: " << path << std::endl; } // 打开设备 IOCFPlugInInterface** plugInInterface = NULL; IOUSBDeviceInterface** deviceInterface = NULL; SInt32 score; IOReturn ret = IOCreatePlugInInterfaceForService( usbDevice, kIOUSBDeviceUserClientTypeID, kIOCFPlugInInterfaceID, &plugInInterface, &score); if (ret == kIOReturnSuccess && plugInInterface) { ret = (*plugInInterface)->QueryInterface(plugInInterface, CFUUIDGetUUIDBytes(kIOUSBDeviceInterfaceID), (LPVOID*)&deviceInterface); (*plugInInterface)->Release(plugInInterface); } if (ret != kIOReturnSuccess) { std::cerr << "Failed to open USB device interface. Error:" << ret << std::endl; IOObjectRelease(usbDevice); continue; } // 禁用/启用设备 if (enable) { // 启用设备 - 重新配置设备 ret = (*deviceInterface)->USBDeviceReEnumerate(deviceInterface, 0); if (ret == kIOReturnSuccess) { std::cout << "Device enabled successfully." << std::endl; result = true; } else { std::cerr << "Failed to enable device. Error: " << ret << std::endl; } } else { // 禁用设备 - 断开设备连接 ret = (*deviceInterface)->USBDeviceClose(deviceInterface); if (ret == kIOReturnSuccess) { std::cout << "Device disabled successfully." << std::endl; result = true; } else { std::cerr << "Failed to disable device. Error: " << ret << std::endl; } } // 关闭设备接口 (*deviceInterface)->Release(deviceInterface); IOObjectRelease(usbDevice); } IOObjectRelease(deviceIterator); if (deviceCount == 0) { std::cerr << "No device found with specified VID/PID." << std::endl; return false; } return result; }

I have an app that needs to seize USB devices, in particular it needs the USBInterfaceOpenSeize call to succeed. I've got a provisioning profile with this entitlement, I've added this plus this entitlement to my app but the USBInterfaceOpenSeize still fails. Am I correct in thinking this is the correct/only entitlement I need for this? If so how do I check if I'm using the profile/entitlements correctly? The call succeeds if I run the application as root which makes me think it's a permissions issue. Thanks.

How does VMWare access USB devices without have any specifics of the USB device? Does it use the same profile/entitlement process or does it take a different approach?

Hi all, In MacOS, how can I disable or enable build-in camera by program or script?

We have a macOS application which interacts with our USB and PCI devices to perform SCSI and NVME commands on them. We use IOUSBHost, IOUSBLib and IOKitLib for USB interface and have created a custom driver to interact with PCI devices. Is there a way we can implement a similar functionality for iOS as well if we connect the cards and readers using OTG?

When plugging in my matched USB device I see the logs below. It seems the kernelmanagerd process is sandboxed and can't write out the reason my Dext failed to load. Is there somewhere else I can look for this info? default 11:03:22.175152-0700 kernelmanagerd Received kext load notification: me.keithg.MyUserUSBInterfaceDriver default 11:03:22.177637-0700 kernel 1 duplicate report for Sandbox: icdd(2124) allow file-read-data /Library/Image Capture/Devices error 11:03:22.177681-0700 kernel Sandbox: kernelmanagerd(545) deny(1) file-write-create /private/var/folders/zz/zyxvpxvq6csfxvn_n0000000000000/T/com.apple.kernelmanagerd/TemporaryItems com.apple.libcoreservices error 11:03:22.177711-0700 kernelmanagerd mkdir: path=/var/folders/zz/zyxvpxvq6csfxvn_n0000000000000/T/com.apple.kernelmanagerd/TemporaryItems/ mode= -rwx------: [1: Operation not permitted] error 11:03:22.179361-0700 kernel Sandbox: kernelmanagerd(545) deny(1) file-write-create /private/var/db/loadedkextmt.plist.sb-5a00fc77-LNttZF com.apple.libcoreservices error 11:03:22.177755-0700 kernelmanagerd _dirhelper_relative_internal: error for path <private>: [1: Operation not permitted] com.apple.accessories default 11:03:22.177674-0700 WindowServer Sending analytics event... (eventName: com.apple.ioport.transport.USB.published) error 11:03:22.179913-0700 kernelmanagerd Failed to write extension load report plist.

I'm working on a project to allow HID input from macOS to a connected iOS device. Are we prohibited from matching to a connected iPhone with DriverKit? I see the attribute kCDCDoNotMatchThisDevice for my iPhone is YES when looking at the IO registry and my dext does not initialize

Hi Folks, We are reading the USB device data from our app using libusb/iokit libraries. Before updating the MacOS to the 15.3 we never faced any issue but after updating OS to 15.3 Sequoia we started facing issue to access the USB device's information. We are not getting the device endpoints for the matching service and fails with below error- Error:Failed to create IOUSBHostObject. with reason: IOServiceOpen failed. Respective code snippet- service = IOServiceGetMatchingService(kIOMasterPortDefault, matchingDictionary); IOUSBHostInterface* interface = [[IOUSBHostInterface alloc] initWithIOService:service options:IOUSBHostObjectInitOptionsDeviceCapture queue:*queue error:&error interestHandler:nil]; We get the denial message during accessing the IOService error 23:17:30.691934-0800 kernel 41 duplicate reports for Sandbox: spotlightknowledged(1399) deny(1) mach-lookup com.apple.diagnosticd error 23:17:30.691945-0800 kernel System Policy: com.prograde.pgdrefreshpro.helpe(70515) deny(1) iokit-open-service IOUSBHostInterface Also when we checked the IOUSBHOST logs we can see pipes are stalled while running the RefreshPro app as below- 2025-02-05 22:06:31.838141-0800 0x25913e Error 0x0 0 0 kernel: (IOUSBHostFamily) AppleUSBIORequest: AppleUSBIORequest::complete: device 8 (SD PG05.5@08210000) endpoint 0x00: status 0xe0005000 (pipe stalled): 0 bytes transferred We need an assistance here to know what exactly could be the cause and how can we elevate the permissions to access the USB device on MacOS15.3. Do we need other entitlements? As we never faced such issue with our certificate and Identifier on any MacOS versions and with the current entitlements we have. Do we need to include any entitlement in the code? Thanks.