Alex knew that to get the device working, they needed to develop a custom driver. After researching the available options, Alex decided to create a KMDF (Kernel-Mode Driver Framework) HID (Human Interface Device) minidriver. This type of driver would allow the touch I2C device to be recognized as a HID device, enabling Windows to automatically load the driver and provide a seamless user experience.
// 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); kmdf hid minidriver for touch i2c device download
// Initialize the I2C communication status = TouchI2C_InitI2C(device); if (!NT_SUCCESS(status)) { WdfDeviceClose(device); return status; } Alex knew that to get the device working,
// I2C communication NTSTATUS TouchI2C_ReadI2C(WDFDEVICE device, PVOID buffer, ULONG bufferLength) { // Implement I2C read transaction } if (!NT_SUCCESS(status)) { WdfDeviceClose(device)