The DDC/CI application can work well on MacbookPro/Mac Pro (Big Sur), but it doesn't work on M1 Mac (both macOS 11.0.1 and 11.1). M1’s graphics card is Apple, not Intel or AMD. Does this incompatible issue relate with new graphics card or kernel change? Any alternative solution for M1?

Howdy! I have been experimenting with my system's electronics (MacBook Pro 13-inch, M1, 2020) by using software probe written in C/C++ type program. The idea is to extract the relevant information just like it is presented in Apple > About This Mac > System Report, for my cross-platform Engine. I have been tinkering with a tool dmidecode. It works just fine on Linux and Windows. For MacOS, I need to find a graceful way of obtaining the AppleSMBIOS service, in this context. To my best of knowledge, the service is nonexistent as I have checked by C code and some application named IORegistryExplorer (courtesy Google). Just wondering if someone has been on such endurance and how much satisfaction has been achieved upon the topic. Thanks a lot!

I am new to Mac and got a question. Got a third party USB device and its old library source which has the device old Vendor ID. The device with new Vendor ID is not compatible with old library. So change the Vendor ID in the old source, rebuild it, and use the lib?. Can I use the device in a new Mac?.

I've a basic IOPCIDevice driver for a custom device that supports MSI(x). The interrupt filter doesn't get called if I passthe msi index to the IOFilterInterruptEventSource. That's a first problem.The filter is continously called if I don't pass the msi index. That's a 2nd problem.Interrupt was triggered when I initialized the device. In the filter I cleared the cause register. For some reasonintr mask register was already cleared when the filter is called which is another problem.Any clues/pointers?

I'm building a driver in C++ for my iPad using DriverKit. I'm trying to make a request to a control endpoint, so I'm trying to use DeviceRequest: https://developer.apple.com/documentation/usbdriverkit/iousbhostinterface/3182582-devicerequest But the first parameter ask for USBmakebmRequestType which it's a macro defined in IOKit > USB.h I tried to #include <IOKit/USB.h> and #include <IOKit/usb/USB.h> and  but it doesn't find the header. Any idea? thanks.

Hello We have a USB camera. My Mac can recognize it and we can get frames with any software. There is a physical button on it and the vendor says the camera is UVC-compliant. But button doesn't work anyway. I captured some USB traffic data and saw that it has two interfaces. One for streaming and other one for interrupting (like button click). I read UVC 1.5 standards to understand it and it is working like written in UVC 1.5. So, I can get a data with an interrupt transfer when clicking the button. I checked these two interfaces, they use UVCAssistant for driver(System Extension). I tried to use libusb, I can get data from button click. But for frames I had to use libuvc, but it wasn't work for my camera (I think it is related with USB descriptor parsing in libuvc). I thought that I should write a driver for single interface and so second interface will use same UVC assistant driver and first interface will use my driver. I wrote a driver and it matches with first interface. But second interface is empty (unhandled by any driver). I want to load UVCAssistant for second interface of USB port. How can I do this? Output before loading my driver After loading: IOKitPersonalities that I used:

USB-Devices without macOS support Every so often I find usefull USB consumer hardware without any macOS support. At best accompanied with some sample code aimed at Linux using libUSB and/or a datasheet [1]. Using code snippets from long since archived IOKit documentation I can deal with that. IOUSBHost Using working IOKit based ObjC Foundation command-line code[2] as reference I am attempting to use theIOUSBHost framework (ObjC Foundation tool). IOUSBHost documentation[3] has all the ingredients but lacks a recipy. Starting with a plugged-in USBDevice and using its idVendor and idProduct[4] I can initialize and destroy base class IOUSBObject and get notified when I unplug the USBDevice. initialize and destroy IOUSBHostDevice[5] and retrieve various descriptors [6] and configure with value: 0, and even do a vendor bmRequestType request without error. But since I already beforehand know the content of my descriptors I can start with IOUSBHostInterface?[7] , needed for my 3 pipes, interrupt, bulk in and out. But Error:Unable to open io_service_t object and create user client. with reason: Exclusive open of usb object failed, whether I asked for exclusive access or not. So I could do with some guidance on how to use IOUSBHost[8]. Let Any Pointer bring joy. Using: Apple M1 Max, MacOS 13.0.1 (22A400), Xcode 14.1 (14B47b) Alternatives considered: Raspberry Pi using UDP (JSON;) over wifi. [1] e.g. https://www.digchip.com/datasheets/parts/datasheet/280/DS2490-pdf.php [2] depending on usage this might need a runloop [3] including dec 2022 https://www.usb.org/sites/default/files/usb_32_202206.zip I failed to find the phrase 'Host-mode'. HINT start by inspecting chapter 9 to get a taste of the terms like function, class, address and value and number. Those wordings will also appear in Apple's documentation. NOTE Tables in chapter 9: Assuming D[n]: stands for bitNr[n] in a bitmap where D[0] is the least significant bit. USEFULL No. [4] use the IORegistryExplorer.app and/or ioreg in Terminal [5] IOUSBHostInterface.h tells me: CFMutableDictionaryRef to be used with IOService matching methods. To be released by caller. But as far a I know CFFoundation is now under ARC. [6] IOUSBInterfaceDescriptor * next = IOUSBGetNextInterfaceDescriptor(configurationDescriptor, nil); while (next != nil) // needs cast (IOUSBDescriptorHeader *)next [7] signed to run locally [8] My next step would be using Swift. Off topic but related and disturbing in a type safe world https://forums.swift.org/t/nsdata-data-vs-data-withunsafebytes/50231/5 Please please please never use NSData.bytes in Swift code. Is this why IOUSBHostObject ioDataWithCapacity uses NSMutableData? Quote: Because the kernel backs the NSMutableData object, the length and capacity aren’t mutable. Any changes to the length or capacity throws an exception. Effectively treating NSMutableData as NSData, only the compiler complains beforehand when an attempt is made to modify the length of NSData (data.bytes ARE mutable)

I recently came across a program that used data tables to invert the display, however it was a windows only application and I am wondering how I can write a similar thing for Mac, or if there is one already available. The app and config file is attached below so you can sort of dissect how it works Config File: [negativescreen.conf](https://developer.apple.com/forums/content/attachment/f4b67ed7-fa71-4ee6-9c0d-18febe2c3381) Readme file: [README.md](https://developer.apple.com/forums/content/attachment/86bd72f6-46c9-42d5-a925-561f75f24ae8) Window$ Executable: [NegativeScreen.exe](https://developer.apple.com/forums/content/attachment/a4478bd5-d5c7-41dd-9302-0e1a929372c2)

We have been looking into developing an application for iOS that will allow the phone to connect to a sensor through a serial connection. The purpose is to change the settings of the sensor using the phone. However, I have been made aware that we would be unable to develop such an app unless we enroll in the MFI program. We considered alternatives such as using Redpark’s cables and their SDKs, but according to them publishing would not be possible. They mentioned we could develop the app and publish through Apple Business Manager to distribute to corporate customers, but as far as I could tell, this requires the customer to be enrolled in the Apple Business Manager program as well. What we wish to do is publish publicly in both iOS and Android, but for iOS there doesn’t seem to be support for serial communication, and I am assuming appropriate APIs/SDKs are available only through the MFI program. I would like to know what options we have and how we can explore them. Thank you very much for your time.

Hi, allAccessing USB device on MAC OSX platform, the “App Sandbox”=YES and”com.apple.security.device.usb”=YES Must be increased to entitlents file.How to Implement USB Access in iOS Platform?

Does anyone have an example of streaming video data from a user client to a client app? I have successfully set up a DriverKit USB hardware driver that commands a device to successfully fill the same IOBufferMemoryDescriptor at 30fps with new data (verified in driver). I have also managed to map this buffer to the application using CopyClientMemoryForType in the user client and IOConnectMapMemory64 in the app. I have also confirmed the data is the intended image data. What I CAN NOT do is see updates in the mapped memory in the app. I map and unmap the data, but the contents don't change. No matter how many times I map, CopyClientMemoryForType is called once. How should changes to the underlying dext space memory be reflected/synchronized to the app? Can I not share a single buffer (4-12MB, ringed) and synchronize updates?

Hello everyone, I downloaded the demo app from the driverkit demo located at https://developer.apple.com/documentation/driverkit/communicating_between_a_driverkit_extension_and_a_client_app, I downloaded the files and followed the process in the two possible ways by letting xcode automatically sign the app and by me creating the provisioning profiles, everything compiles but I am facing this particular issue whenever I try to invoke the system installation of the driver:2022-11-16 00:45:12.425147-0600 DriverKitSampleApp[5837:69830] sysex didFailWithError: The operation couldn’t be completed. (OSSystemExtensionErrorDomain error 9.) There is very little to none information on the web, and I dont know what else to do at this point.

I'm trying to create a driver for my usb device, using iOS and DriverKit. I'm basing my code in the example used in WWDC: https://github.com/knightsc/USBApp My driver starts fine when the device is connected and the readCompleted method is called fine, but the action->GetReference() gets only \0 characteres. Also in order to know that the usb device is actually working I've connected it to my mac first and using PyUSB I can see that it's returning data in chunks of 1024 bytes in the interface 0. This is the data I get in PyUSB: array('B', [6, 0, 1, 0, 2, 0, 3, 0, 4, 0, 5, 0, 6, 0, 7, 0, 8, 0, 9, 0, 10, 0, 11, 0, 12, 0, 13, 0, 14, 0, 15, 0, 16, 0, 17, 0, 18, 0, 19, 0, 20, 0, 21, 0, 22, 0, 23, 0, 24, 0, 25, 0, 26, 0, 27, 0, 28, 0, 29, 0, 30, 0, 31, 0, 32, 0, 33, 0, 34, 0, 35, 0, 36, 0, 37, 0, 38, 0, 39, 0, 40, 0, 41, 0, 42, 0, 43, 0, 44, 0, 45, 0, 46, 0, 47, 0, 48, 0, 49, 0, 50, 0, 51, 0, 52, 0, 53, 0, 54, 0, 55, 0, 56, 0, 57, 0, 58, 0, 59, 0, 60, 0, 61, 0, 62, 0, 63, 0, 64, 0, 65, 0, 66, 0, 67, 0, 68, 0, 69, 0, 70, 0, 71, 0, 72, 0, 73, 0, 74, 0, 75, 0, 76, 0, 77, 0, 78, 0, 79, 0, 80, 0, 81, 0, 82, 0, 83, 0, 84, 0, 85, 0, 86, 0, 87, 0, 88, 0, 89, 0, 90, 0, 91, 0, 92, 0, 93, 0, 94, 0, 95, 0, 96, 0, 97, 0, 98, 0, 99, 0, 100, 0, 101, 0, 102, 0, 103, 0, 104, 0, 105, 0, 106, 0, 107, 0, 108, 0, 109, 0, 110, 0, 111, 0, 112, 0, 113, 0, 114, 0, 115, 0, 116, 0, 117, 0, 118, 0, 119, 0, 120, 0, 121, 0, 122, 0, 123, 0, 124, 0, 125, 0, 126, 0, 127, 0, 128, 0, 129, 0, 130, 0, 131, 0, 132, 0, 133, 0, 134, 0, 135, 0, 136, 0, 137, 0, 138, 0, 139, 0, 140, 0, 141, 0, 142, 0, 143, 0, 144, 0, 145, 0, 146, 0, 147, 0, 148, 0, 149, 0, 150, 0, 151, 0, 152, 0, 153, 0, 154, 0, 155, 0, 156, 0, 157, 0, 158, 0, 159, 0, 160, 0, 161, 0, 162, 0, 163, 0, 164, 0, 165, 0, 166, 0, 167, 0, 168, 0, 169, 0, 170, 0, 171, 0, 172, 0, 173, 0, 174, 0, 175, 0, 176, 0, 177, 0, 178, 0, 179, 0, 180, 0, 181, 0, 182, 0, 183, 0, 184, 0, 185, 0, 186, 0, 187, 0, 188, 0, 189, 0, 190, 0, 191, 0, 192, 0, 193, 0, 194, 0, 195, 0, 196, 0, 197, 0, 198, 0, 199, 0, 200, 0, 201, 0, 202, 0, 203, 0, 204, 0, 205, 0, 206, 0, 207, 0, 208, 0, 209, 0, 210, 0, 211, 0, 212, 0, 213, 0, 214, 0, 215, 0, 216, 0, 217, 0, 218, 0, 219, 0, 220, 0, 221, 0, 222, 0, 223, 0, 224, 0, 225, 0, 226, 0, 227, 0, 228, 0, 229, 0, 230, 0, 231, 0, 232, 0, 233, 0, 234, 0, 235, 0, 236, 0, 237, 0, 238, 0, 239, 0, 240, 0, 241, 0, 242, 0, 243, 0, 244, 0, 245, 0, 246, 0, 247, 0, 248, 0, 249, 0, 250, 0, 251, 0, 252, 0, 253, 0, 254, 0, 255, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]) This is the Ivars: struct Mk1dDriver_IVars { IOUSBHostInterface *interface; IOUSBHostPipe *inPipe; OSAction *ioCompleteCallback; IOBufferMemoryDescriptor *inData; uint16_t maxPacketSize; }; This is the Start method: kern_return_t IMPL(Mk1dDriver, Start) { kern_return_t ret; IOUSBStandardEndpointDescriptors descriptors; ret = Start(provider, SUPERDISPATCH); __Require(kIOReturnSuccess == ret, Exit); ret = RegisterService(); if (ret != kIOReturnSuccess) { Log("Start() - Failed to register service with error: 0x%08x.", ret); goto Exit; } ivars->interface = OSDynamicCast(IOUSBHostInterface, provider); __Require_Action(NULL != ivars->interface, Exit, ret = kIOReturnNoDevice); ret = ivars->interface->Open(this, 0, NULL); __Require(kIOReturnSuccess == ret, Exit); ret = ivars->interface->CopyPipe(kMyEndpointAddress, &ivars->inPipe); __Require(kIOReturnSuccess == ret, Exit); ret = ivars->interface->CreateIOBuffer(kIOMemoryDirectionIn, 1024, &ivars->inData); __Require(kIOReturnSuccess == ret, Exit); ret = OSAction::Create(this, Mk1dDriver_ReadComplete_ID, IOUSBHostPipe_CompleteAsyncIO_ID, 0, &ivars->ioCompleteCallback); __Require(kIOReturnSuccess == ret, Exit); ret = ivars->inPipe->AsyncIO(ivars->inData, ivars->maxPacketSize, ivars->ioCompleteCallback, 0); __Require(kIOReturnSuccess == ret, Exit); os_log(OS_LOG_DEFAULT,"Finish"); // WWDC slides don't show the full function // i.e. this is still unfinished Exit: return ret; } The only difference in this compared with the code from Apple is that I set capacity in the method CreateIOBuffer to 1024. This is because if I leave it to 0 it will return an error that memory could not be allocated: kIOReturnNoMemory And the ReadComplete method: void IMPL(Mk1dDriver, ReadComplete) { char output[1024]; memcpy(action->GetReference(), &output, 1024); os_log(OS_LOG_DEFAULT,"ReadComplete"); If I put a breakpoint in the log, I can see all the positions in output will be \0 Any idea what I'm doing wrong? Could this be because the iPad is a device under Supervision? Thanks

According to https://developer.apple.com/documentation/iokit IOKit is supported for iOS/iPadOS 16.0+. I was trying to figure out what that exactly meant by using Xcode 14.1 and build for iPadOS 16.1. But I just get "No such module 'IOKit'" if I have import IOKit in any Swift file. Wondering if it is an error in the documentation or if I have to do something extraordinary? Thanks :)

Hello!After updating my devices to iOS to 13.1 I've started to receive "IOServiceOpen failed: 0xe00002e2"in my swift project while connecting USB HID Device to my iPhone. This not good, because IOService is a part of kernel framework and I really need it. What should I do? Is it a bug or a feature of new iOS version?

I am trying to compile the IOPCIFamily kext, but it isn't working with me. I'm normally pretty good with troubleshooting, but I'm at a complete loss. I don't even know where to begin 😆 I saw someone say on a thread from 4 years ago that you need to compile XNU to compile IOPCIFamily. I successfully compiled XNU (after much trial and error), but now I'm not sure what to do with it. Could anyone point me in the right direction? Thanks!

The documentation for IOHIDUserService lists the following instance method: virtual void dispatchEvent(IOHIDEvent *event); It specifically says, "You can also call it directly to dispatch events for which you create an IOHIDEvent object." I see nowhere in any documentation on the details for the IOHIDEvent class and creating your own. Google searches let me find https://opensource.apple.com/source/IOHIDFamily/IOHIDFamily-368.20/IOHIDFamily/IOHIDEvent.h.auto.html Unfortunately i see nowhere on my computer where IOHIDEvent.h exists. Is this something i'm going to have to build/pull in manually, or is there a framework that I'm just not seeing that I can pull in to create an IOHIDEvent?

I have been trying to get a stub DriverKit driver loading on my computers without success. I keep getting errors regarding the code signature being invalid. I've been beating my head against the wall for a couple weeks now, so I'd appreciate the help. Layout: Standard Application that does the install/removal. BundleId (changed to protect the innocent) com.somename.someapp. Second target with DriverKit driver: com.somename.someapp.mydriver. To start out this is an IOUserHIDEventService. Question 1) I assume these need to be different with their own entitlements. Is that correct? Question 2) this is my current Entitlement layout; App has SystemExtension. Driver has DriverKit, DriverKit HID Transport, and DriverKit HID Event Service Family. Is this correct for this layout? Question 3) Does the Code Signing Identity/Profile in the Apple Developer section need to match exactly, or can that have more than what is requested? (I started equal, but gave more just to try to troubleshoot) Question 4) I have requested and have been approved to have the "Additional Capabilities" versions of the DriverKit entitlements in Identities. Do i need both checked? can I only have the distribution one? Question 5) I have SIP disabled on my machine (csrutil status shows disabled). I thought this was supposed to bypass the code signing checks? I still see the driver loading being killed because of invalid code signing. Question 6) Does the "Additional Capabilities" version of the DriverKit entitlements that I needed get get approval for bypass the need to disable SIP, or will i need to keep it off for the entirety of development? Thanks!

I am new to Mac Os kext development. I want to develop a device driver on macOS Mojave (10.14.2) for my device. I created a demo to check the running process of the driver, but after actually running it, I didn't find any log about the driver. The following is the source code. Compile with xcode. IOKitTest.cpp /* add your code here */ #include "IOKitTest.hpp" #include <IOKit/IOService.h> #include <IOKit/IOLib.h> // 类似cocoa中 super关键字 #define super IOService // 和头文件中的宏定义类似, 自动生成一些特定的代码 OSDefineMetaClassAndStructors(com_apple_driver_IOKitTest, IOService); bool com_apple_driver_IOKitTest::init(OSDictionary *dict) {   bool result = super::init(dict);       IOLog("IOKitTest : did init !! \n"); // IOlog() 生成log日志, 存在在system.log里       log = os_log_create("com.apple.driver", "XmX");   os_log(log, "xmx Tests!!");       /** 遍历OSDictionary */   OSCollectionIterator *iter = OSCollectionIterator::withCollection(dict);   if (iter)   {     OSObject *object = NULL;     while ((object = iter->getNextObject()))     {       OSSymbol *key = OSDynamicCast(OSSymbol, object);       IOLog("iRedTest : key:%s ",key->getCStringNoCopy());       OSString *value = OSDynamicCast(OSString, dict->getObject(key));       if (value != NULL)       {         IOLog("iRedTest : value:%s\n",value->getCStringNoCopy());       }     }   }       return result; } void com_apple_driver_IOKitTest::free(void) {   IOLog("IOKitTest : free \n");   os_log(log, "xmx Tests!!");   super::free(); } IOService *com_apple_driver_IOKitTest::probe(IOService *provider, SInt32 *score) {   IOService *probe = super::probe(provider, score);   return probe; } bool com_apple_driver_IOKitTest::start(IOService *provider) {   bool result = super::start(provider);   IOLog("IOKitTest : start \n");   os_log(log, "xmx Tests!!");   return result; } void com_apple_driver_IOKitTest::stop(IOService *provider) {   IOLog("IOKitTest : stop \n");   os_log(log, "xmx Tests!!");   super::stop(provider); } IOKitTest.hpp /* add your code here */ #include <IOKit/IOService.h> #include <os/log.h> #ifndef IOKitTest_hpp #define IOKitTest_hpp class com_apple_driver_IOKitTest : public IOService {       //一个宏定义，会自动生成该类的构造方法、析构方法和运行时   OSDeclareDefaultStructors(com_apple_driver_IOKitTest);     public:   // 该方法与cocoa中init方法和C++中构造函数类似   virtual bool init(OSDictionary *dict = 0) APPLE_KEXT_OVERRIDE;   // 该方法与cocoa中dealloc方法和c++中析构函数类似   virtual void free(void) APPLE_KEXT_OVERRIDE;   // 进行驱动匹配时调用   virtual IOService *probe(IOService *provider, SInt32 *score) APPLE_KEXT_OVERRIDE;   // 进行加载时调用   virtual bool start(IOService *provider) APPLE_KEXT_OVERRIDE;   // 进行卸载时调用   virtual void stop(IOService *provider) APPLE_KEXT_OVERRIDE;       os_log_t log; }; #endif /* IOKitTest_hpp */ info.plist <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"> <plist version="1.0"> <dict> <key>CFBundleDevelopmentRegion</key> <string>$(DEVELOPMENT_LANGUAGE)</string> <key>CFBundleExecutable</key> <string>$(EXECUTABLE_NAME)</string> <key>CFBundleIdentifier</key> <string>$(PRODUCT_BUNDLE_IDENTIFIER)</string> <key>CFBundleInfoDictionaryVersion</key> <string>6.0</string> <key>CFBundleName</key> <string>$(PRODUCT_NAME)</string> <key>CFBundlePackageType</key> <string>KEXT</string> <key>CFBundleShortVersionString</key> <string>1.0</string> <key>CFBundleVersion</key> <string>1</string> <key>IOKitPersonalities</key> <dict> <key>IOKitTest</key> <dict> <key>CFBundleIdentifier</key> <string>com.apple.driver.IOKitTest</string> <key>IOClass</key> <string>com_apple_driver_IOKitTest</string> <key>IOMatchCategory</key> <string>com_apple_driver_IOKitTest</string> <key>IOProbeScore</key> <integer>10000</integer> <key>IOProviderClass</key> <string>IOResource</string> <key>IOResourceMatch</key> <string>IOKit</string> </dict> </dict> <key>NSHumanReadableCopyright</key> <string>Copyright © 2022 JingCe. All rights reserved.</string> <key>OSBundleLibraries</key> <dict> <key>com.apple.kpi.iokit</key> <string>18.2.0</string> <key>com.apple.kpi.libkern</key> <string>18.2.0</string> </dict> </dict> </plist> After the driver is loaded kextstat shows Does the above indicate that the driver is loaded successfully? where to view the kernel log？ Where can I learn kext demo？

Hi, I wanted to confirm if it is possible to communicate through the USB-C ports of the newer iPads with USB devices that aren't supported natively by iOS. More specifically, we want to be able to interface CCID (smart cards / USB crypto tokens) devices from our app. It seems that, since iOS 16, the IOKit/DriverKit frameworks are now made available. Does it mean we have everything to interface any kind of USB devices from a mobile app? Will there be constraints when submitting the app to the app store later on? On which devices exactly is this possible? All devices that have a USB-C port (newer iPad Pro / iPad Air / iPad mini)? Only a subset of them? Thank you.