Keyboard.c 6.67 KB
Newer Older
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
/*
             LUFA Library
     Copyright (C) Dean Camera, 2009.
              
  dean [at] fourwalledcubicle [dot] com
      www.fourwalledcubicle.com
*/

/*
  Copyright 2009  Denver Gingerich (denver [at] ossguy [dot] com)
      Based on code by 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.
*/
31
32
33
34
35
36
37

/** \file
 *
 *  Main source file for the Keyboard demo. This file contains the main tasks of
 *  the demo and is responsible for the initial application hardware configuration.
 */

38
39
#include "Keyboard.h"

40
41
42
/** Buffer to hold the previously generated Keyboard HID report, for comparison purposes inside the HID class driver. */
uint8_t PrevKeyboardHIDReportBuffer[sizeof(USB_KeyboardReport_Data_t)];

43
44
45
46
/** LUFA HID Class driver interface configuration and state information. This structure is
 *  passed to all HID Class driver functions, so that multiple instances of the same class
 *  within a device can be differentiated from one another.
 */
47
48
49
50
51
52
53
54
USB_ClassInfo_HID_Device_t Keyboard_HID_Interface =
 	{
		.Config =
			{
				.InterfaceNumber         = 0,

				.ReportINEndpointNumber  = KEYBOARD_EPNUM,
				.ReportINEndpointSize    = KEYBOARD_EPSIZE,
55
56
57

				.PrevReportINBuffer      = PrevKeyboardHIDReportBuffer,
				.PrevReportINBufferSize  = sizeof(PrevKeyboardHIDReportBuffer),
58
			},
59
    };
60

61
62
63
/** Main program entry point. This routine contains the overall program flow, including initial
 *  setup of all components and the main program loop.
 */
64
65
int main(void)
{
66
67
68
69
70
71
	SetupHardware();

	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
	
	for (;;)
	{
72
		HID_Device_USBTask(&Keyboard_HID_Interface);
73
74
		USB_USBTask();
	}
75
}
76

77
/** Configures the board hardware and chip peripherals for the demo's functionality. */
78
79
void SetupHardware()
{
80
81
82
	/* Disable watchdog if enabled by bootloader/fuses */
	MCUSR &= ~(1 << WDRF);
	wdt_disable();
83

84
85
	/* Disable clock division */
	clock_prescale_set(clock_div_1);
86

87
88
89
90
91
	/* Hardware Initialization */
	Joystick_Init();
	LEDs_Init();
	Buttons_Init();
	USB_Init();
92
93
94
95
96
97

	/* Millisecond timer initialization, with output compare interrupt enabled for the idle timing */
	OCR0A  = ((F_CPU / 64) / 1000);
	TCCR0A = (1 << WGM01);
	TCCR0B = ((1 << CS01) | (1 << CS00));
	TIMSK0 = (1 << OCIE0A);
98
99
}

100
/** Event handler for the library USB Connection event. */
101
void EVENT_USB_Device_Connect(void)
102
{
103
	LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
104
105
}

106
/** Event handler for the library USB Disconnection event. */
107
void EVENT_USB_Device_Disconnect(void)
108
{
109
	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
110
111
}

112
/** Event handler for the library USB Configuration Changed event. */
113
void EVENT_USB_Device_ConfigurationChanged(void)
114
{
115
	LEDs_SetAllLEDs(LEDMASK_USB_READY);
116

117
	if (!(HID_Device_ConfigureEndpoints(&Keyboard_HID_Interface)))
118
	  LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
119
120
}

121
122
/** Event handler for the library USB Unhandled Control Request event. */
void EVENT_USB_Device_UnhandledControlRequest(void)
123
{
124
	HID_Device_ProcessControlRequest(&Keyboard_HID_Interface);
125
126
}

127
/** ISR to keep track of each millisecond interrupt, for determining the HID class idle period remaining when set. */
128
ISR(TIMER0_COMPA_vect, ISR_BLOCK)
129
{
130
	HID_Device_MillisecondElapsed(&Keyboard_HID_Interface);
131
132
}

133
134
/** HID class driver callback function for the creation of HID reports to the host.
 *
135
136
137
 *  \param[in] HIDInterfaceInfo  Pointer to the HID class interface configuration structure being referenced
 *  \param[in,out] ReportID  Report ID requested by the host if non-zero, otherwise callback should set to the generated report ID
 *  \param[out] ReportData  Pointer to a buffer where the created report should be stored
138
 *  \param[out] ReportSize  Number of bytes written in the report (or zero if no report is to be sent
139
 *
140
 *  \return Boolean true to force the sending of the report, false to let the library determine if it needs to be sent
141
 */
142
143
bool CALLBACK_HID_Device_CreateHIDReport(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo, uint8_t* const ReportID,
                                         void* ReportData, uint16_t* ReportSize)
144
{
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
	USB_KeyboardReport_Data_t* KeyboardReport = (USB_KeyboardReport_Data_t*)ReportData;
	
	uint8_t JoyStatus_LCL    = Joystick_GetStatus();
	uint8_t ButtonStatus_LCL = Buttons_GetStatus();

	if (JoyStatus_LCL & JOY_UP)
	  KeyboardReport->KeyCode[0] = 0x04; // A
	else if (JoyStatus_LCL & JOY_DOWN)
	  KeyboardReport->KeyCode[0] = 0x05; // B

	if (JoyStatus_LCL & JOY_LEFT)
	  KeyboardReport->KeyCode[0] = 0x06; // C
	else if (JoyStatus_LCL & JOY_RIGHT)
	  KeyboardReport->KeyCode[0] = 0x07; // D

	if (JoyStatus_LCL & JOY_PRESS)
	  KeyboardReport->KeyCode[0] = 0x08; // E
	  
	if (ButtonStatus_LCL & BUTTONS_BUTTON1)
	  KeyboardReport->KeyCode[0] = 0x09; // F
165
166
167
	
	*ReportSize = sizeof(USB_KeyboardReport_Data_t);
	return false;
168
169
}

170
171
/** HID class driver callback function for the processing of HID reports from the host.
 *
172
173
174
175
 *  \param[in] HIDInterfaceInfo  Pointer to the HID class interface configuration structure being referenced
 *  \param[in] ReportID  Report ID of the received report from the host
 *  \param[in] ReportData  Pointer to a buffer where the created report has been stored
 *  \param[in] ReportSize  Size in bytes of the received HID report
176
 */
177
178
void CALLBACK_HID_Device_ProcessHIDReport(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo, const uint8_t ReportID,
                                          const void* ReportData, const uint16_t ReportSize)
179
{
180
181
182
183
184
185
186
187
188
189
190
191
192
	uint8_t  LEDMask   = LEDS_NO_LEDS;
	uint8_t* LEDReport = (uint8_t*)ReportData;

	if (*LEDReport & 0x01) // NUM Lock
	  LEDMask |= LEDS_LED1;
	
	if (*LEDReport & 0x02) // CAPS Lock
	  LEDMask |= LEDS_LED3;

	if (*LEDReport & 0x04) // SCROLL Lock
	  LEDMask |= LEDS_LED4;
	  
	LEDs_SetAllLEDs(LEDMask);
193
}