USBInterrupt.c 6.24 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
/*
             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.
*/

#include "USBInterrupt.h"

void USB_INT_DisableAllInterrupts(void)
{
35
	#if defined(USB_SERIES_6_AVR) || defined(USB_SERIES_7_AVR)
36
	USBCON &= ~((1 << VBUSTE) | (1 << IDTE));				
37
	#elif defined(USB_SERIES_4_AVR)
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
	USBCON &= ~(1 << VBUSTE);					
	#endif
	
	#if defined(USB_CAN_BE_HOST)
	UHIEN   = 0;
	OTGIEN  = 0;
	#endif
	
	#if defined(USB_CAN_BE_DEVICE)
	UDIEN   = 0;
	#endif
}

void USB_INT_ClearAllInterrupts(void)
{
53
	#if defined(USB_SERIES_4_AVR) || defined(USB_SERIES_6_AVR) || defined(USB_SERIES_7_AVR)
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
	USBINT  = 0;
	#endif
	
	#if defined(USB_CAN_BE_HOST)
	UHINT   = 0;
	OTGINT  = 0;
	#endif
	
	#if defined(USB_CAN_BE_DEVICE)
	UDINT   = 0;
	#endif
}

ISR(USB_GEN_vect, ISR_BLOCK)
{
	#if defined(USB_CAN_BE_DEVICE)
70
	#if defined(USB_SERIES_4_AVR) || defined(USB_SERIES_6_AVR) || defined(USB_SERIES_7_AVR)
71
72
73
74
75
76
	if (USB_INT_HasOccurred(USB_INT_VBUS) && USB_INT_IsEnabled(USB_INT_VBUS))
	{
		USB_INT_Clear(USB_INT_VBUS);

		if (USB_VBUS_GetStatus())
		{
77
			USB_DeviceState = DEVICE_STATE_Powered;
78
			EVENT_USB_Device_Connect();
79
80
81
		}
		else
		{
82
83
			USB_DeviceState = DEVICE_STATE_Unattached;		
			EVENT_USB_Device_Disconnect();
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
		}
	}
	#endif

	if (USB_INT_HasOccurred(USB_INT_SUSPEND) && USB_INT_IsEnabled(USB_INT_SUSPEND))
	{
		USB_INT_Clear(USB_INT_SUSPEND);

		USB_INT_Disable(USB_INT_SUSPEND);
		USB_INT_Enable(USB_INT_WAKEUP);
		
		USB_CLK_Freeze();
		
		if (!(USB_Options & USB_OPT_MANUAL_PLL))
		  USB_PLL_Off();

100
		#if defined(USB_SERIES_2_AVR) && !defined(NO_LIMITED_CONTROLLER_CONNECT)
101
		USB_DeviceState = DEVICE_STATE_Unattached;
102
		EVENT_USB_Device_Disconnect();
103
104
		#else
		USB_DeviceState = DEVICE_STATE_Suspended;
105
		EVENT_USB_Device_Suspend();
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
		#endif
	}

	if (USB_INT_HasOccurred(USB_INT_WAKEUP) && USB_INT_IsEnabled(USB_INT_WAKEUP))
	{
		if (!(USB_Options & USB_OPT_MANUAL_PLL))
		{
			USB_PLL_On();
			while (!(USB_PLL_IsReady()));
		}

		USB_CLK_Unfreeze();

		USB_INT_Clear(USB_INT_WAKEUP);

		USB_INT_Disable(USB_INT_WAKEUP);
		USB_INT_Enable(USB_INT_SUSPEND);
		
124
		#if defined(USB_SERIES_2_AVR) && !defined(NO_LIMITED_CONTROLLER_CONNECT)
125
126
		USB_DeviceState = (USB_ConfigurationNumber) ? DEVICE_STATE_Configured : DEVICE_STATE_Powered;
		EVENT_USB_Device_Connect();
127
		#else
128
		USB_DeviceState = (USB_ConfigurationNumber) ? DEVICE_STATE_Configured : DEVICE_STATE_Addressed;
129
		EVENT_USB_Device_WakeUp();		
130
131
132
133
134
135
136
		#endif
	}
   
	if (USB_INT_HasOccurred(USB_INT_EORSTI) && USB_INT_IsEnabled(USB_INT_EORSTI))
	{
		USB_INT_Clear(USB_INT_EORSTI);

137
		USB_DeviceState         = DEVICE_STATE_Default;
138
139
140
141
142
143
144
145
146
147
148
149
		USB_ConfigurationNumber = 0;

		USB_INT_Clear(USB_INT_SUSPEND);
		USB_INT_Disable(USB_INT_SUSPEND);
		USB_INT_Enable(USB_INT_WAKEUP);

		Endpoint_ClearEndpoints();

		Endpoint_ConfigureEndpoint(ENDPOINT_CONTROLEP, EP_TYPE_CONTROL,
		                           ENDPOINT_DIR_OUT, USB_ControlEndpointSize,
		                           ENDPOINT_BANK_SINGLE);

150
		#if defined(INTERRUPT_CONTROL_ENDPOINT)
151
		USB_INT_Enable(USB_INT_RXSTPI);
152
153
		#endif

154
		EVENT_USB_Device_Reset();
155
	}
156
157
158
159
160
161
162
	
	if (USB_INT_HasOccurred(USB_INT_SOFI) && USB_INT_IsEnabled(USB_INT_SOFI))
	{
		USB_INT_Clear(USB_INT_SOFI);
		
		EVENT_USB_Device_StartOfFrame();
	}
163
164
165
166
167
168
169
170
171
	#endif
	
	#if defined(USB_CAN_BE_HOST)
	if (USB_INT_HasOccurred(USB_INT_DDISCI) && USB_INT_IsEnabled(USB_INT_DDISCI))
	{
		USB_INT_Clear(USB_INT_DDISCI);
		USB_INT_Clear(USB_INT_DCONNI);
		USB_INT_Disable(USB_INT_DDISCI);
			
172
		EVENT_USB_Host_DeviceUnattached();
173
174
175
176
177
178
179
180
181
182
183

		USB_ResetInterface();
	}
	
	if (USB_INT_HasOccurred(USB_INT_VBERRI) && USB_INT_IsEnabled(USB_INT_VBERRI))
	{
		USB_INT_Clear(USB_INT_VBERRI);

		USB_Host_VBUS_Manual_Off();
		USB_Host_VBUS_Auto_Off();

184
185
		EVENT_USB_Host_HostError(HOST_ERROR_VBusVoltageDip);
		EVENT_USB_Host_DeviceUnattached();
186
187
188
189
190
191
192
193
194

		USB_HostState = HOST_STATE_Unattached;
	}

	if (USB_INT_HasOccurred(USB_INT_SRPI) && USB_INT_IsEnabled(USB_INT_SRPI))
	{
		USB_INT_Clear(USB_INT_SRPI);
		USB_INT_Disable(USB_INT_SRPI);
	
195
		EVENT_USB_Host_DeviceAttached();
196
197
198

		USB_INT_Enable(USB_INT_DDISCI);
		
199
		USB_HostState = HOST_STATE_Powered;
200
201
202
203
204
205
	}

	if (USB_INT_HasOccurred(USB_INT_BCERRI) && USB_INT_IsEnabled(USB_INT_BCERRI))
	{
		USB_INT_Clear(USB_INT_BCERRI);
		
206
207
		EVENT_USB_Host_DeviceEnumerationFailed(HOST_ENUMERROR_NoDeviceDetected, 0);
		EVENT_USB_Host_DeviceUnattached();
208
209
210
211
212
213
214
215
216
217

		USB_ResetInterface();
	}
	#endif

	#if defined(USB_CAN_BE_BOTH)
	if (USB_INT_HasOccurred(USB_INT_IDTI) && USB_INT_IsEnabled(USB_INT_IDTI))
	{		
		USB_INT_Clear(USB_INT_IDTI);

218
		if (USB_DeviceState != DEVICE_STATE_Unattached)
219
		  EVENT_USB_Device_Disconnect();
220

221
		if (USB_HostState != HOST_STATE_Unattached)
222
		  EVENT_USB_Host_DeviceUnattached();
223
		
224
225
226
		USB_CurrentMode = USB_GetUSBModeFromUID();
		EVENT_USB_UIDChange();

227
228
229
230
		USB_ResetInterface();
	}
	#endif
}
231

232
#if defined(INTERRUPT_CONTROL_ENDPOINT) && defined(USB_CAN_BE_DEVICE)
233
ISR(USB_COM_vect, ISR_BLOCK)
234
235
236
237
238
{
	uint8_t PrevSelectedEndpoint = Endpoint_GetCurrentEndpoint();

	USB_USBTask();

239
	USB_INT_Clear(USB_INT_RXSTPI);
240
	
241
	Endpoint_SelectEndpoint(PrevSelectedEndpoint);
242
243
}
#endif