CDCHost.c 5.87 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
31
32
33
34
35
36
37
38
/*
             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 CDCHost demo. This file contains the main tasks of
 *  the demo and is responsible for the initial application hardware configuration.
 */
 
#include "CDCHost.h"

39
40
41
42
/** 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.
 */
43
44
USB_ClassInfo_CDC_Host_t VirtualSerial_CDC_Interface =
	{
45
46
47
48
49
50
51
52
53
54
55
		.Config =
			{
				.DataINPipeNumber       = 1,
				.DataOUTPipeNumber      = 2,
				.NotificationPipeNumber = 3,
			},
			
		.State =
			{
				// Leave all state values to their defaults			
			}
56
	};
57

58
	
59
60
61
62
63
64
65
/** 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();

66
	puts_P(PSTR(ESC_FG_CYAN "CDC Host Demo running.\r\n" ESC_FG_WHITE));
67
68
69
70
71

	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);

	for (;;)
	{
72
73
74
		switch (USB_HostState)
		{
			case HOST_STATE_Addressed:
75
76
				LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
			
77
78
79
				uint16_t ConfigDescriptorSize;
				uint8_t  ConfigDescriptorData[512];

80
81
				if ((USB_GetDeviceConfigDescriptor(1, &ConfigDescriptorSize, NULL) != HOST_SENDCONTROL_Successful) ||
				    (ConfigDescriptorSize > sizeof(ConfigDescriptorData)))
82
				{
83
					printf("Error Retrieving Configuration Descriptor.\r\n");
84
85
86
87
88
89
90
91
92
93
94
					LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
					USB_HostState = HOST_STATE_WaitForDeviceRemoval;
					break;
				}
				  
				USB_GetDeviceConfigDescriptor(1, &ConfigDescriptorSize, ConfigDescriptorData);

				if (CDC_Host_ConfigurePipes(&VirtualSerial_CDC_Interface,
				                            ConfigDescriptorSize, ConfigDescriptorData) != CDC_ENUMERROR_NoError)
				{
					printf("Attached Device Not a Valid CDC Class Device.\r\n");
95
96
					LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
					USB_HostState = HOST_STATE_WaitForDeviceRemoval;
97
					break;
98
99
				}
				
100
101
				if (USB_Host_SetDeviceConfiguration(1) != HOST_SENDCONTROL_Successful)
				{
102
					printf("Error Setting Device Configuration.\r\n");
103
104
105
106
					LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
					USB_HostState = HOST_STATE_WaitForDeviceRemoval;
					break;
				}
107
				
108
				printf("CDC Device Enumerated.\r\n");
109
110
111
112
113
114
				USB_HostState = HOST_STATE_Configured;
				break;
			case HOST_STATE_Configured:
				break;
		}
	
115
		CDC_Host_USBTask(&VirtualSerial_CDC_Interface);
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
		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("\r\nDevice 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();

167
168
	puts_P(PSTR(ESC_FG_RED "Host Mode Error\r\n"));
	printf_P(PSTR(" -- Error Code %d\r\n" ESC_FG_WHITE), ErrorCode);
169
170
171
172
173
174
175
176
177
178

	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)
{
179
	puts_P(PSTR(ESC_FG_RED "Dev Enum Error\r\n"));
180
181
	printf_P(PSTR(" -- Error Code %d\r\n"), ErrorCode);
	printf_P(PSTR(" -- Sub Error Code %d\r\n"), SubErrorCode);
182
	printf_P(PSTR(" -- In State %d\r\n" ESC_FG_WHITE), USB_HostState);
183
184
185
	
	LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
}