- switch (USB_HostState)
- {
- case HOST_STATE_Addressed:
- LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
-
- uint16_t ConfigDescriptorSize;
- uint8_t ConfigDescriptorData[512];
-
- if (USB_Host_GetDeviceConfigDescriptor(1, &ConfigDescriptorSize, ConfigDescriptorData,
- sizeof(ConfigDescriptorData)) != HOST_GETCONFIG_Successful)
- {
- puts_P(PSTR("Error Retrieving Configuration Descriptor.\r\n"));
- LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
- USB_HostState = HOST_STATE_WaitForDeviceRemoval;
- break;
- }
-
- if (HID_Host_ConfigurePipes(&Keyboard_HID_Interface,
- ConfigDescriptorSize, ConfigDescriptorData) != HID_ENUMERROR_NoError)
- {
- puts_P(PSTR("Attached Device Not a Valid Keyboard.\r\n"));
- LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
- USB_HostState = HOST_STATE_WaitForDeviceRemoval;
- break;
- }
-
- if (USB_Host_SetDeviceConfiguration(1) != HOST_SENDCONTROL_Successful)
- {
- puts_P(PSTR("Error Setting Device Configuration.\r\n"));
- LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
- USB_HostState = HOST_STATE_WaitForDeviceRemoval;
- break;
- }
-
- if (HID_Host_SetBootProtocol(&Keyboard_HID_Interface) != 0)
- {
- puts_P(PSTR("Could not Set Boot Protocol Mode.\r\n"));
- LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
- USB_HostState = HOST_STATE_WaitForDeviceRemoval;
- break;
- }
-
- puts_P(PSTR("Keyboard Enumerated.\r\n"));
- LEDs_SetAllLEDs(LEDMASK_USB_READY);
- USB_HostState = HOST_STATE_Configured;
- break;
- case HOST_STATE_Configured:
- if (HID_Host_IsReportReceived(&Keyboard_HID_Interface))
- {
- USB_KeyboardReport_Data_t KeyboardReport;
- HID_Host_ReceiveReport(&Keyboard_HID_Interface, &KeyboardReport);
-
- LEDs_ChangeLEDs(LEDS_LED1, (KeyboardReport.Modifier) ? LEDS_LED1 : 0);
-
- uint8_t PressedKeyCode = KeyboardReport.KeyCode[0];
-
- if (PressedKeyCode)
- {
- char PressedKey = 0;
-
- LEDs_ToggleLEDs(LEDS_LED2);
-
- /* Retrieve pressed key character if alphanumeric */
- if ((PressedKeyCode >= 0x04) && (PressedKeyCode <= 0x1D))
- PressedKey = (PressedKeyCode - 0x04) + 'A';
- else if ((PressedKeyCode >= 0x1E) && (PressedKeyCode <= 0x27))
- PressedKey = (PressedKeyCode - 0x1E) + '0';
- else if (PressedKeyCode == 0x2C)
- PressedKey = ' ';
- else if (PressedKeyCode == 0x28)
- PressedKey = '\n';
-
- if (PressedKey)
- putchar(PressedKey);
- }
- }
-
- break;
- }
-