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
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
|
/*
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 DualCDC demo. This file contains the main tasks of
* the demo and is responsible for the initial application hardware configuration.
*/
#include "DualCDC.h"
/** LUFA CDC Class driver interface configuration and state information. This structure is
* passed to all CDC Class driver functions, so that multiple instances of the same class
* within a device can be differentiated from one another. This is for the first CDC interface,
* which sends strings to the host for each joystick movement.
*/
USB_ClassInfo_CDC_Device_t VirtualSerial1_CDC_Interface =
{
.Config =
{
.ControlInterfaceNumber = 0,
.DataINEndpointNumber = CDC1_TX_EPNUM,
.DataINEndpointSize = CDC_TXRX_EPSIZE,
.DataOUTEndpointNumber = CDC1_RX_EPNUM,
.DataOUTEndpointSize = CDC_TXRX_EPSIZE,
.NotificationEndpointNumber = CDC1_NOTIFICATION_EPNUM,
.NotificationEndpointSize = CDC_NOTIFICATION_EPSIZE,
},
.State =
{
// Leave all state values to their defaults
}
};
/** LUFA CDC Class driver interface configuration and state information. This structure is
* passed to all CDC Class driver functions, so that multiple instances of the same class
* within a device can be differentiated from one another. This is for the second CDC interface,
* which echos back all received data from the host.
*/
USB_ClassInfo_CDC_Device_t VirtualSerial2_CDC_Interface =
{
.Config =
{
.ControlInterfaceNumber = 2,
.DataINEndpointNumber = CDC2_TX_EPNUM,
.DataINEndpointSize = CDC_TXRX_EPSIZE,
.DataOUTEndpointNumber = CDC2_RX_EPNUM,
.DataOUTEndpointSize = CDC_TXRX_EPSIZE,
.NotificationEndpointNumber = CDC2_NOTIFICATION_EPNUM,
.NotificationEndpointSize = CDC_NOTIFICATION_EPSIZE,
},
.State =
{
// Leave all state values to their defaults
}
};
/** Main program entry point. This routine contains the overall program flow, including initial
* setup of all components and the main program loop.
*/
int main(void)
{
SetupHardware();
LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
for (;;)
{
CheckJoystickMovement();
/* Discard all received data on the first CDC interface */
uint16_t BytesToDiscard = CDC_Device_BytesReceived(&VirtualSerial1_CDC_Interface);
while (BytesToDiscard--)
CDC_Device_ReceiveByte(&VirtualSerial1_CDC_Interface);
/* Echo all received data on the second CDC interface */
uint16_t BytesToEcho = CDC_Device_BytesReceived(&VirtualSerial2_CDC_Interface);
while (BytesToEcho--)
CDC_Device_SendByte(&VirtualSerial2_CDC_Interface, CDC_Device_ReceiveByte(&VirtualSerial2_CDC_Interface));
CDC_Device_USBTask(&VirtualSerial1_CDC_Interface);
CDC_Device_USBTask(&VirtualSerial2_CDC_Interface);
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 */
Joystick_Init();
LEDs_Init();
USB_Init();
}
/** Checks for changes in the position of the board joystick, sending strings to the host upon each change
* through the first of the CDC interfaces.
*/
void CheckJoystickMovement(void)
{
uint8_t JoyStatus_LCL = Joystick_GetStatus();
char* ReportString = NULL;
static bool ActionSent = false;
char* const JoystickStrings[] =
{
"Joystick Up\r\n",
"Joystick Down\r\n",
"Joystick Left\r\n",
"Joystick Right\r\n",
"Joystick Pressed\r\n",
};
if (JoyStatus_LCL & JOY_UP)
ReportString = JoystickStrings[0];
else if (JoyStatus_LCL & JOY_DOWN)
ReportString = JoystickStrings[1];
else if (JoyStatus_LCL & JOY_LEFT)
ReportString = JoystickStrings[2];
else if (JoyStatus_LCL & JOY_RIGHT)
ReportString = JoystickStrings[3];
else if (JoyStatus_LCL & JOY_PRESS)
ReportString = JoystickStrings[4];
else
ActionSent = false;
if ((ReportString != NULL) && (ActionSent == false))
{
ActionSent = true;
CDC_Device_SendString(&VirtualSerial1_CDC_Interface, ReportString, strlen(ReportString));
}
}
/** Event handler for the library USB Connection event. */
void EVENT_USB_Connect(void)
{
LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
}
/** Event handler for the library USB Disconnection event. */
void EVENT_USB_Disconnect(void)
{
LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
}
/** Event handler for the library USB Configuration Changed event. */
void EVENT_USB_ConfigurationChanged(void)
{
LEDs_SetAllLEDs(LEDMASK_USB_READY);
if (!(CDC_Device_ConfigureEndpoints(&VirtualSerial1_CDC_Interface)))
LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
if (!(CDC_Device_ConfigureEndpoints(&VirtualSerial2_CDC_Interface)))
LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
}
/** Event handler for the library USB Unhandled Control Packet event. */
void EVENT_USB_UnhandledControlPacket(void)
{
CDC_Device_ProcessControlPacket(&VirtualSerial1_CDC_Interface);
CDC_Device_ProcessControlPacket(&VirtualSerial2_CDC_Interface);
}
|
