Curiously, my desktop's instalation running Mint Cinnamon offers the Alsa option as device. I have the same issue in my notebook running Mint MATE, only 2 options: None and COMEDI. This is the configuration with issue: System: Host: HP1000 Kernel: 5.4.0-62-generic x86_64 bits: 64 compiler: gcc v: 7.5.0 Desktop. If somebody could help me, I'd be grateful. COMEDI says: "/dev/comedi0 No such file or directory". But the options under Mint MATE's instalation are "None" and "COMEDI". Support for 12-Bit ADC for Raspberry Pi from Seeed ![]() The major alternative is to use the COMEDI interface (), but I don't see seed listed on their. The design was intended for things like sound cards and network pipes that present naturally as file descriptors. I don't think the DataSrc interface is too hard, but I think it does expect to poll a file descriptor to find out when more data is available to read. Paul - Probably your best option is to implement a custom DataSrc (see xoscope.h) and add it to the list near the top of xoscope.c. 1 year ago xoscope: digital oscilloscopeĪdd bootstrap script and remove some auto-installed filesįix this by installing the GTK 2 development package: sudo apt install libgtk2.0-dev.To access a file object, the driver must call InitializeObjectAttributes, passing the Unicode string in the ObjectName parameter, and then pass the successfully initialized attribute structure in a call to ZwCreateFile. To access a specific device object, the driver must call IoGetDeviceObjectPointer, passing the Unicode string for the required interface in the ObjectName parameter. Get a pointer to a device or file object that corresponds to an instance of the interface. The returned list contains pointers to the Unicode symbolic link strings that identify the device interface instances. See Using PnP device interface change notification for more information.Ī driver or other kernel-mode component can also call IoGetDeviceInterfaces to get a list of all registered, enabled device interface instances for a specific device interface class. The callback routines receive the DEVICE_INTERFACE_CHANGE_NOTIFICATION structure, which contains a Unicode string representing the interface instance's symbolic link. This routine stores the address of a driver-supplied callback, which is called whenever an instance of a device interface instance is enabled or disabled, for a specified device class. To register, the component calls IoRegisterPlugPlayNotification. To get notified about the enablement and disablement of device interfaces and how to react to those actions, see Registering for notification of device interface arrival and device removal.īefore a kernel-mode component can use a specific device or file object, it must do the following:ĭetermine whether the required device interface class is registered and enabled.Ī driver can register with the PnP manager to be notified when an instance of a device interface is enabled or disabled. The user-mode application can then use I/O APIs such as CreateFile to obtain a handle to the device in order to send I/O to it. ![]() User-mode code can use CfgMgr32 functions (for example, CM_Get_Device_Interface_List) or SetupDi Xxx functions (see SetupDi device interface functions) to find out about registered, enabled device interfaces. ![]() Device interfaces are available to both kernel-mode components and user-mode applications.
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