diff options
Diffstat (limited to 'Demos/Host/ClassDriver/KeyboardHost/KeyboardHost.c')
| -rw-r--r-- | Demos/Host/ClassDriver/KeyboardHost/KeyboardHost.c | 287 |
1 files changed, 287 insertions, 0 deletions
diff --git a/Demos/Host/ClassDriver/KeyboardHost/KeyboardHost.c b/Demos/Host/ClassDriver/KeyboardHost/KeyboardHost.c new file mode 100644 index 000000000..64bcf0906 --- /dev/null +++ b/Demos/Host/ClassDriver/KeyboardHost/KeyboardHost.c @@ -0,0 +1,287 @@ +/*
+ LUFA Library
+ Copyright (C) Dean Camera, 2009.
+
+ dean [at] fourwalledcubicle [dot] com
+ www.fourwalledcubicle.com
+*/
+
+/*
+ Copyright 2009 Dean Camera (dean [at] fourwalledcubicle [dot] com)
+
+ Permission to use, copy, modify, and distribute this software
+ and its documentation for any purpose and without fee is hereby
+ granted, provided that the above copyright notice appear in all
+ copies and that both that the copyright notice and this
+ permission notice and warranty disclaimer appear in supporting
+ documentation, and that the name of the author not be used in
+ advertising or publicity pertaining to distribution of the
+ software without specific, written prior permission.
+
+ The author disclaim all warranties with regard to this
+ software, including all implied warranties of merchantability
+ and fitness. In no event shall the author be liable for any
+ special, indirect or consequential damages or any damages
+ whatsoever resulting from loss of use, data or profits, whether
+ in an action of contract, negligence or other tortious action,
+ arising out of or in connection with the use or performance of
+ this software.
+*/
+
+/** \file
+ *
+ * Main source file for the KeyboardHost demo. This file contains the main tasks of
+ * the demo and is responsible for the initial application hardware configuration.
+ */
+
+#include "KeyboardHost.h"
+
+/** Main program entry point. This routine configures the hardware required by the application, then
+ * starts the scheduler to run the application tasks.
+ */
+int main(void)
+{
+ SetupHardware();
+
+ puts_P(PSTR(ESC_RESET ESC_BG_WHITE ESC_INVERSE_ON ESC_ERASE_DISPLAY
+ "Keyboard HID Host Demo running.\r\n" ESC_INVERSE_OFF));
+
+ LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+
+ for (;;)
+ {
+ Keyboard_HID_Task();
+ USB_USBTask();
+ }
+}
+
+/** Configures the board hardware and chip peripherals for the demo's functionality. */
+void SetupHardware(void)
+{
+ /* Disable watchdog if enabled by bootloader/fuses */
+ MCUSR &= ~(1 << WDRF);
+ wdt_disable();
+
+ /* Disable clock division */
+ clock_prescale_set(clock_div_1);
+
+ /* Hardware Initialization */
+ SerialStream_Init(9600, false);
+ LEDs_Init();
+ USB_Init();
+}
+
+/** Event handler for the USB_DeviceAttached event. This indicates that a device has been attached to the host, and
+ * starts the library USB task to begin the enumeration and USB management process.
+ */
+void EVENT_USB_DeviceAttached(void)
+{
+ puts_P(PSTR("Device Attached.\r\n"));
+ LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
+}
+
+/** Event handler for the USB_DeviceUnattached event. This indicates that a device has been removed from the host, and
+ * stops the library USB task management process.
+ */
+void EVENT_USB_DeviceUnattached(void)
+{
+ puts_P(PSTR("Device Unattached.\r\n"));
+ LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+}
+
+/** Event handler for the USB_DeviceEnumerationComplete event. This indicates that a device has been successfully
+ * enumerated by the host and is now ready to be used by the application.
+ */
+void EVENT_USB_DeviceEnumerationComplete(void)
+{
+ LEDs_SetAllLEDs(LEDMASK_USB_READY);
+}
+
+/** Event handler for the USB_HostError event. This indicates that a hardware error occurred while in host mode. */
+void EVENT_USB_HostError(const uint8_t ErrorCode)
+{
+ USB_ShutDown();
+
+ puts_P(PSTR(ESC_BG_RED "Host Mode Error\r\n"));
+ printf_P(PSTR(" -- Error Code %d\r\n"), ErrorCode);
+
+ LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
+ for(;;);
+}
+
+/** Event handler for the USB_DeviceEnumerationFailed event. This indicates that a problem occurred while
+ * enumerating an attached USB device.
+ */
+void EVENT_USB_DeviceEnumerationFailed(const uint8_t ErrorCode, const uint8_t SubErrorCode)
+{
+ puts_P(PSTR(ESC_BG_RED "Dev Enum Error\r\n"));
+ printf_P(PSTR(" -- Error Code %d\r\n"), ErrorCode);
+ printf_P(PSTR(" -- Sub Error Code %d\r\n"), SubErrorCode);
+ printf_P(PSTR(" -- In State %d\r\n"), USB_HostState);
+
+ LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
+}
+
+/** Reads in and processes the next report from the attached device, displaying the report
+ * contents on the board LEDs and via the serial port.
+ */
+void ReadNextReport(void)
+{
+ USB_KeyboardReport_Data_t KeyboardReport;
+
+ /* Select keyboard data pipe */
+ Pipe_SelectPipe(KEYBOARD_DATAPIPE);
+
+ /* Unfreeze keyboard data pipe */
+ Pipe_Unfreeze();
+
+ /* Check to see if a packet has been received */
+ if (!(Pipe_IsINReceived()))
+ {
+ /* Refreeze HID data IN pipe */
+ Pipe_Freeze();
+
+ return;
+ }
+
+ /* Ensure pipe contains data before trying to read from it */
+ if (Pipe_IsReadWriteAllowed())
+ {
+ /* Read in keyboard report data */
+ Pipe_Read_Stream_LE(&KeyboardReport, sizeof(KeyboardReport));
+
+ /* Indicate if the modifier byte is non-zero (special key such as shift is being pressed) */
+ LEDs_ChangeLEDs(LEDS_LED1, (KeyboardReport.Modifier) ? LEDS_LED1 : 0);
+
+ /* Check if a key has been pressed */
+ if (KeyboardReport.KeyCode)
+ {
+ /* Toggle status LED to indicate keypress */
+ if (LEDs_GetLEDs() & LEDS_LED2)
+ LEDs_TurnOffLEDs(LEDS_LED2);
+ else
+ LEDs_TurnOnLEDs(LEDS_LED2);
+
+ char PressedKey = 0;
+
+ /* Retrieve pressed key character if alphanumeric */
+ if ((KeyboardReport.KeyCode >= 0x04) && (KeyboardReport.KeyCode <= 0x1D))
+ PressedKey = (KeyboardReport.KeyCode - 0x04) + 'A';
+ else if ((KeyboardReport.KeyCode >= 0x1E) && (KeyboardReport.KeyCode <= 0x27))
+ PressedKey = (KeyboardReport.KeyCode - 0x1E) + '0';
+ else if (KeyboardReport.KeyCode == 0x2C)
+ PressedKey = ' ';
+ else if (KeyboardReport.KeyCode == 0x28)
+ PressedKey = '\n';
+
+ /* Print the pressed key character out through the serial port if valid */
+ if (PressedKey)
+ putchar(PressedKey);
+ }
+ }
+
+ /* Clear the IN endpoint, ready for next data packet */
+ Pipe_ClearIN();
+
+ /* Refreeze keyboard data pipe */
+ Pipe_Freeze();
+}
+
+/** Task to set the configuration of the attached device after it has been enumerated, and to read and process
+ * HID reports from the device and display the results onto the board LEDs.
+ */
+void Keyboard_HID_Task(void)
+{
+ uint8_t ErrorCode;
+
+ switch (USB_HostState)
+ {
+ case HOST_STATE_Addressed:
+ /* Standard request to set the device configuration to configuration 1 */
+ USB_ControlRequest = (USB_Request_Header_t)
+ {
+ .bmRequestType = (REQDIR_HOSTTODEVICE | REQTYPE_STANDARD | REQREC_DEVICE),
+ .bRequest = REQ_SetConfiguration,
+ .wValue = 1,
+ .wIndex = 0,
+ .wLength = 0,
+ };
+
+ /* Select the control pipe for the request transfer */
+ Pipe_SelectPipe(PIPE_CONTROLPIPE);
+
+ /* Send the request, display error and wait for device detach if request fails */
+ if ((ErrorCode = USB_Host_SendControlRequest(NULL)) != HOST_SENDCONTROL_Successful)
+ {
+ puts_P(PSTR("Control Error (Set Configuration).\r\n"));
+ printf_P(PSTR(" -- Error Code: %d\r\n"), ErrorCode);
+
+ /* Indicate error status */
+ LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
+
+ /* Wait until USB device disconnected */
+ while (USB_IsConnected);
+ break;
+ }
+
+ USB_HostState = HOST_STATE_Configured;
+ break;
+ case HOST_STATE_Configured:
+ puts_P(PSTR("Getting Config Data.\r\n"));
+
+ /* Get and process the configuration descriptor data */
+ if ((ErrorCode = ProcessConfigurationDescriptor()) != SuccessfulConfigRead)
+ {
+ if (ErrorCode == ControlError)
+ puts_P(PSTR("Control Error (Get Configuration).\r\n"));
+ else
+ puts_P(PSTR("Invalid Device.\r\n"));
+
+ printf_P(PSTR(" -- Error Code: %d\r\n"), ErrorCode);
+
+ /* Indicate error status */
+ LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
+
+ /* Wait until USB device disconnected */
+ while (USB_IsConnected);
+ break;
+ }
+
+ /* HID class request to set the keyboard protocol to the Boot Protocol */
+ USB_ControlRequest = (USB_Request_Header_t)
+ {
+ .bmRequestType = (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE),
+ .bRequest = REQ_SetProtocol,
+ .wValue = 0,
+ .wIndex = 0,
+ .wLength = 0,
+ };
+
+ /* Select the control pipe for the request transfer */
+ Pipe_SelectPipe(PIPE_CONTROLPIPE);
+
+ /* Send the request, display error and wait for device detach if request fails */
+ if ((ErrorCode = USB_Host_SendControlRequest(NULL)) != HOST_SENDCONTROL_Successful)
+ {
+ puts_P(PSTR("Control Error (Set Protocol).\r\n"));
+ printf_P(PSTR(" -- Error Code: %d\r\n"), ErrorCode);
+
+ /* Indicate error status */
+ LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
+
+ /* Wait until USB device disconnected */
+ while (USB_IsConnected);
+ break;
+ }
+
+ puts_P(PSTR("Keyboard Enumerated.\r\n"));
+
+ USB_HostState = HOST_STATE_Ready;
+ break;
+ case HOST_STATE_Ready:
+ /* If a report has been received, read and process it */
+ ReadNextReport();
+
+ break;
+ }
+}
|