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269 lines
8.3 KiB
269 lines
8.3 KiB
/*
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LUFA Library
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Copyright (C) Dean Camera, 2010.
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dean [at] fourwalledcubicle [dot] com
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www.fourwalledcubicle.com
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*/
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/*
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Copyright 2010 Dean Camera (dean [at] fourwalledcubicle [dot] com)
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Permission to use, copy, modify, distribute, and sell this
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software and its documentation for any purpose is hereby granted
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without fee, provided that the above copyright notice appear in
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all copies and that both that the copyright notice and this
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permission notice and warranty disclaimer appear in supporting
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documentation, and that the name of the author not be used in
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advertising or publicity pertaining to distribution of the
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software without specific, written prior permission.
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The author disclaim all warranties with regard to this
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software, including all implied warranties of merchantability
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and fitness. In no event shall the author be liable for any
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special, indirect or consequential damages or any damages
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whatsoever resulting from loss of use, data or profits, whether
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in an action of contract, negligence or other tortious action,
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arising out of or in connection with the use or performance of
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this software.
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*/
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/** \file
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*
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* Main source file for the KeyboardHost demo. This file contains the main tasks of
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* the demo and is responsible for the initial application hardware configuration.
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*/
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#include "KeyboardHost.h"
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/** Main program entry point. This routine configures the hardware required by the application, then
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* enters a loop to run the application tasks in sequence.
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*/
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int main(void)
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{
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SetupHardware();
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puts_P(PSTR(ESC_FG_CYAN "Keyboard HID Host Demo running.\r\n" ESC_FG_WHITE));
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LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
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sei();
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for (;;)
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{
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Keyboard_HID_Task();
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USB_USBTask();
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}
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}
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/** Configures the board hardware and chip peripherals for the demo's functionality. */
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void SetupHardware(void)
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{
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/* Disable watchdog if enabled by bootloader/fuses */
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MCUSR &= ~(1 << WDRF);
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wdt_disable();
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/* Disable clock division */
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clock_prescale_set(clock_div_1);
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/* Hardware Initialization */
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SerialStream_Init(9600, false);
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LEDs_Init();
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USB_Init();
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}
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/** Event handler for the USB_DeviceAttached event. This indicates that a device has been attached to the host, and
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* starts the library USB task to begin the enumeration and USB management process.
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*/
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void EVENT_USB_Host_DeviceAttached(void)
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{
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puts_P(PSTR(ESC_FG_GREEN "Device Attached.\r\n" ESC_FG_WHITE));
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LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
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}
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/** Event handler for the USB_DeviceUnattached event. This indicates that a device has been removed from the host, and
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* stops the library USB task management process.
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*/
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void EVENT_USB_Host_DeviceUnattached(void)
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{
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puts_P(PSTR(ESC_FG_GREEN "Device Unattached.\r\n" ESC_FG_WHITE));
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LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
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}
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/** Event handler for the USB_DeviceEnumerationComplete event. This indicates that a device has been successfully
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* enumerated by the host and is now ready to be used by the application.
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*/
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void EVENT_USB_Host_DeviceEnumerationComplete(void)
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{
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LEDs_SetAllLEDs(LEDMASK_USB_READY);
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}
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/** Event handler for the USB_HostError event. This indicates that a hardware error occurred while in host mode. */
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void EVENT_USB_Host_HostError(const uint8_t ErrorCode)
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{
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USB_ShutDown();
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printf_P(PSTR(ESC_FG_RED "Host Mode Error\r\n"
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" -- Error Code %d\r\n" ESC_FG_WHITE), ErrorCode);
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LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
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for(;;);
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}
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/** Event handler for the USB_DeviceEnumerationFailed event. This indicates that a problem occurred while
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* enumerating an attached USB device.
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*/
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void EVENT_USB_Host_DeviceEnumerationFailed(const uint8_t ErrorCode, const uint8_t SubErrorCode)
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{
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printf_P(PSTR(ESC_FG_RED "Dev Enum Error\r\n"
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" -- Error Code %d\r\n"
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" -- Sub Error Code %d\r\n"
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" -- In State %d\r\n" ESC_FG_WHITE), ErrorCode, SubErrorCode, USB_HostState);
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LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
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}
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/** Reads in and processes the next report from the attached device, displaying the report
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* contents on the board LEDs and via the serial port.
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*/
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void ReadNextReport(void)
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{
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USB_KeyboardReport_Data_t KeyboardReport;
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/* Select keyboard data pipe */
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Pipe_SelectPipe(KEYBOARD_DATAPIPE);
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/* Unfreeze keyboard data pipe */
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Pipe_Unfreeze();
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/* Check to see if a packet has been received */
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if (!(Pipe_IsINReceived()))
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{
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/* Refreeze HID data IN pipe */
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Pipe_Freeze();
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return;
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}
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/* Ensure pipe contains data before trying to read from it */
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if (Pipe_IsReadWriteAllowed())
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{
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/* Read in keyboard report data */
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Pipe_Read_Stream_LE(&KeyboardReport, sizeof(KeyboardReport));
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/* Indicate if the modifier byte is non-zero (special key such as shift is being pressed) */
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LEDs_ChangeLEDs(LEDS_LED1, (KeyboardReport.Modifier) ? LEDS_LED1 : 0);
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/* Check if a key has been pressed */
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if (KeyboardReport.KeyCode)
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{
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/* Toggle status LED to indicate keypress */
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LEDs_ToggleLEDs(LEDS_LED2);
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char PressedKey = 0;
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/* Retrieve pressed key character if alphanumeric */
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if ((KeyboardReport.KeyCode[0] >= 0x04) && (KeyboardReport.KeyCode[0] <= 0x1D))
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PressedKey = (KeyboardReport.KeyCode[0] - 0x04) + 'A';
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else if ((KeyboardReport.KeyCode[0] >= 0x1E) && (KeyboardReport.KeyCode[0] <= 0x27))
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PressedKey = (KeyboardReport.KeyCode[0] - 0x1E) + '0';
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else if (KeyboardReport.KeyCode[0] == 0x2C)
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PressedKey = ' ';
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else if (KeyboardReport.KeyCode[0] == 0x28)
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PressedKey = '\n';
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/* Print the pressed key character out through the serial port if valid */
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if (PressedKey)
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putchar(PressedKey);
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}
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}
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/* Clear the IN endpoint, ready for next data packet */
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Pipe_ClearIN();
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/* Refreeze keyboard data pipe */
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Pipe_Freeze();
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}
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/** Task to set the configuration of the attached device after it has been enumerated, and to read and process
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* HID reports from the device and display the results onto the board LEDs.
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*/
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void Keyboard_HID_Task(void)
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{
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uint8_t ErrorCode;
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switch (USB_HostState)
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{
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case HOST_STATE_Addressed:
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puts_P(PSTR("Getting Config Data.\r\n"));
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/* Get and process the configuration descriptor data */
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if ((ErrorCode = ProcessConfigurationDescriptor()) != SuccessfulConfigRead)
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{
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if (ErrorCode == ControlError)
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puts_P(PSTR(ESC_FG_RED "Control Error (Get Configuration).\r\n"));
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else
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puts_P(PSTR(ESC_FG_RED "Invalid Device.\r\n"));
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printf_P(PSTR(" -- Error Code: %d\r\n" ESC_FG_WHITE), ErrorCode);
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/* Indicate error status */
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LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
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/* Wait until USB device disconnected */
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USB_HostState = HOST_STATE_WaitForDeviceRemoval;
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break;
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}
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/* Set the device configuration to the first configuration (rarely do devices use multiple configurations) */
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if ((ErrorCode = USB_Host_SetDeviceConfiguration(1)) != HOST_SENDCONTROL_Successful)
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{
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printf_P(PSTR(ESC_FG_RED "Control Error (Set Configuration).\r\n"
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" -- Error Code: %d\r\n" ESC_FG_WHITE), ErrorCode);
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/* Indicate error status */
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LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
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/* Wait until USB device disconnected */
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USB_HostState = HOST_STATE_WaitForDeviceRemoval;
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break;
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}
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/* HID class request to set the keyboard protocol to the Boot Protocol */
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USB_ControlRequest = (USB_Request_Header_t)
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{
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.bmRequestType = (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE),
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.bRequest = REQ_SetProtocol,
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.wValue = 0,
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.wIndex = 0,
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.wLength = 0,
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};
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/* Select the control pipe for the request transfer */
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Pipe_SelectPipe(PIPE_CONTROLPIPE);
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/* Send the request, display error and wait for device detach if request fails */
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if ((ErrorCode = USB_Host_SendControlRequest(NULL)) != HOST_SENDCONTROL_Successful)
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{
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printf_P(PSTR(ESC_FG_RED "Control Error (Set Protocol).\r\n"
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" -- Error Code: %d\r\n" ESC_FG_WHITE), ErrorCode);
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/* Indicate error status */
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LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
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/* Wait until USB device disconnected */
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USB_HostState = HOST_STATE_WaitForDeviceRemoval;
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break;
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}
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puts_P(PSTR("Keyboard Enumerated.\r\n"));
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USB_HostState = HOST_STATE_Configured;
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break;
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case HOST_STATE_Configured:
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/* If a report has been received, read and process it */
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ReadNextReport();
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break;
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}
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}
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