// HID report handling NTSTATUS TouchI2C_ProcessHidReport(WDFDEVICE device, PVOID reportBuffer, ULONG reportLength) { // Implement HID report processing }
After weeks of development and testing, Alex finally had a working KMDF HID minidriver for the touch I2C device. They tested the driver on various Windows platforms, ensuring that it worked seamlessly with the operating system.
The driver was then submitted to Microsoft for certification, and after a thorough review, it was approved and added to the Windows Update catalog.
// Initialize the I2C communication status = TouchI2C_InitI2C(device); if (!NT_SUCCESS(status)) { WdfDeviceClose(device); return status; } kmdf hid minidriver for touch i2c device download
// HID descriptor VOID TouchI2C_GetHidDescriptor(WDFDEVICE device, PVOID buffer, ULONG bufferLength) { // Define the HID descriptor UCHAR hidDescriptor[] = { // Report descriptor 0x06, 0x00, 0x00, // Usage Page (Generic Desktop) 0x15, 0x00, 0x00, // Logical Minimum 0x26, 0xFF, 0x00, // Logical Maximum 0x35, 0x00, 0x00, // Physical Minimum 0x45, 0x00, 0x00, // Physical Maximum 0x75, 0x08, // Report Size 0x95, 0x01, // Report Count 0x85, 0x01, // Report ID 0x05, 0x08, // Usage (Multi-touch) 0x19, 0x01, // Usage Minimum 0x29, 0x01, // Usage Maximum 0x25, 0x01, // Logical Minimum 0x35, 0x01, // Physical Minimum 0x45, 0x01, // Physical Maximum 0x75, 0x08, // Report Size 0x95, 0x01, // Report Count 0xB1, 0x02, // Feature };
// Device detection NTSTATUS TouchI2C_CreateDevice(WDFDRIVER Driver, PWDFDEVICE_INIT DeviceInit) { WDFDEVICE device; NTSTATUS status;
In the world of computer peripherals, touch devices have become increasingly popular. One such device is a touch I2C device, which allows users to interact with their computers using gestures and taps on a touch-sensitive surface. To enable this device to work seamlessly with Windows operating systems, a specialized driver is needed. In this story, we'll explore the development of a KMDF HID minidriver for a touch I2C device. In this story, we'll explore the development of
Alex began by setting up the development environment, installing the Windows Driver Kit (WDK) and the Windows SDK. They then created a new KMDF driver project using the WDF (Windows Driver Framework) template.
// Copy the HID descriptor to the buffer RtlCopyMemory(buffer, hidDescriptor, sizeof(hidDescriptor)); }
// Define the driver's name and GUID #define DRIVER_NAME "TouchI2C" DEFINE_GUID(GUID_DEVINTERFACE_TouchI2C, 0x5B3B33B0, 0x1234, 0x5678, 0x90, 0x12, 0x34, 0x56, 0x78, 0x90, 0x12, 0x34); In this story
Here's a snippet of the driver's code to illustrate the key components:
The KMDF HID minidriver for the touch I2C device was a success, enabling users to interact with their computers using the touch-sensitive surface. Alex's hard work and dedication to developing a high-quality driver paid off, providing a seamless user experience for those using the device.
#include <wdf.h>