USBInterrupt.c 6.54 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
/*
             LUFA Library
     Copyright (C) Dean Camera, 2010.
              
  dean [at] fourwalledcubicle [dot] com
      www.fourwalledcubicle.com
*/

/*
  Copyright 2010  Dean Camera (dean [at] fourwalledcubicle [dot] com)

  Permission to use, copy, modify, distribute, and sell this 
  software and its documentation for any purpose is hereby granted
  without fee, 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.
*/

#define  __INCLUDE_FROM_USB_DRIVER
#include "USBInterrupt.h"

void USB_INT_DisableAllInterrupts(void)
{
	#if defined(USB_SERIES_6_AVR) || defined(USB_SERIES_7_AVR)
37
	USBCON &= ~((1 << OTGPADE) | (1 << VBUSTE) | (1 << IDTE));				
38
39
40
41
	#elif defined(USB_SERIES_4_AVR)
	USBCON &= ~(1 << VBUSTE);
	#endif
	
42
43
44
45
	#if defined(USB_CAN_BE_BOTH)
	OTGIEN  = 0;
	#endif
	
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
	#if defined(USB_CAN_BE_HOST)
	UHIEN   = 0;
	#endif
	
	#if defined(USB_CAN_BE_DEVICE)
	UDIEN   = 0;
	#endif
}

void USB_INT_ClearAllInterrupts(void)
{
	#if defined(USB_SERIES_4_AVR) || defined(USB_SERIES_6_AVR) || defined(USB_SERIES_7_AVR)
	USBINT  = 0;
	#endif
	
61
62
63
64
	#if defined(USB_CAN_BE_BOTH)
	OTGINT  = 0;
	#endif
	
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
	#if defined(USB_CAN_BE_HOST)
	UHINT   = 0;
	#endif
	
	#if defined(USB_CAN_BE_DEVICE)
	UDINT   = 0;
	#endif
}

ISR(USB_GEN_vect, ISR_BLOCK)
{
	#if defined(USB_CAN_BE_DEVICE)
	#if defined(USB_SERIES_4_AVR) || defined(USB_SERIES_6_AVR) || defined(USB_SERIES_7_AVR)
	if (USB_INT_HasOccurred(USB_INT_VBUS) && USB_INT_IsEnabled(USB_INT_VBUS))
	{
		USB_INT_Clear(USB_INT_VBUS);

		if (USB_VBUS_GetStatus())
		{
			USB_DeviceState = DEVICE_STATE_Powered;
			EVENT_USB_Device_Connect();
		}
		else
		{
			USB_DeviceState = DEVICE_STATE_Unattached;		
			EVENT_USB_Device_Disconnect();
		}
	}
	#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();

		#if defined(USB_SERIES_2_AVR) && !defined(NO_LIMITED_CONTROLLER_CONNECT)
		USB_DeviceState = DEVICE_STATE_Unattached;
		EVENT_USB_Device_Disconnect();
		#else
		USB_DeviceState = DEVICE_STATE_Suspended;
		EVENT_USB_Device_Suspend();
		#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);
		
		#if defined(USB_SERIES_2_AVR) && !defined(NO_LIMITED_CONTROLLER_CONNECT)
		USB_DeviceState = (USB_ConfigurationNumber) ? DEVICE_STATE_Configured : DEVICE_STATE_Powered;
		EVENT_USB_Device_Connect();
		#else
		USB_DeviceState = (USB_ConfigurationNumber) ? DEVICE_STATE_Configured : DEVICE_STATE_Addressed;
		EVENT_USB_Device_WakeUp();		
		#endif
	}
   
	if (USB_INT_HasOccurred(USB_INT_EORSTI) && USB_INT_IsEnabled(USB_INT_EORSTI))
	{
		USB_INT_Clear(USB_INT_EORSTI);

		USB_DeviceState         = DEVICE_STATE_Default;
		USB_ConfigurationNumber = 0;

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

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

		#if defined(INTERRUPT_CONTROL_ENDPOINT)
		USB_INT_Enable(USB_INT_RXSTPI);
		#endif

		EVENT_USB_Device_Reset();
	}
	
	if (USB_INT_HasOccurred(USB_INT_SOFI) && USB_INT_IsEnabled(USB_INT_SOFI))
	{
		USB_INT_Clear(USB_INT_SOFI);
		
		EVENT_USB_Device_StartOfFrame();
	}
	#endif
	
	#if defined(USB_CAN_BE_HOST)
171
172
	bool MustResetInterface = false;

173
174
175
176
177
178
179
	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);
			
		EVENT_USB_Host_DeviceUnattached();
180
181
		
		MustResetInterface = true;
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
207
208
209
210
211
212
213
214
215
	}
	
	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();

		EVENT_USB_Host_HostError(HOST_ERROR_VBusVoltageDip);
		EVENT_USB_Host_DeviceUnattached();

		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);
	
		EVENT_USB_Host_DeviceAttached();

		USB_INT_Enable(USB_INT_DDISCI);
		
		USB_HostState = HOST_STATE_Powered;
	}

	if (USB_INT_HasOccurred(USB_INT_BCERRI) && USB_INT_IsEnabled(USB_INT_BCERRI))
	{
		USB_INT_Clear(USB_INT_BCERRI);
		
		EVENT_USB_Host_DeviceEnumerationFailed(HOST_ENUMERROR_NoDeviceDetected, 0);
		EVENT_USB_Host_DeviceUnattached();

216
		MustResetInterface = true;
217
	}
218
219
220
221
222
223
224

	if (USB_INT_HasOccurred(USB_INT_HSOFI) && USB_INT_IsEnabled(USB_INT_HSOFI))
	{
		USB_INT_Clear(USB_INT_HSOFI);
		
		EVENT_USB_Host_StartOfFrame();
	}
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
	#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);

		if (USB_DeviceState != DEVICE_STATE_Unattached)
		  EVENT_USB_Device_Disconnect();

		if (USB_HostState != HOST_STATE_Unattached)
		  EVENT_USB_Host_DeviceUnattached();
		
		USB_CurrentMode = USB_GetUSBModeFromUID();
		EVENT_USB_UIDChange();

241
		MustResetInterface = true;
242
	}
243
244
245
	
	if (MustResetInterface)
	  USB_ResetInterface();
246
247
248
249
250
251
	#endif
}

#if defined(INTERRUPT_CONTROL_ENDPOINT) && defined(USB_CAN_BE_DEVICE)
ISR(USB_COM_vect, ISR_BLOCK)
{
252
	uint8_t PrevSelectedEndpoint = Endpoint_GetCurrentEndpoint(); 
253

254
	Endpoint_SelectEndpoint(ENDPOINT_CONTROLEP);
255
	USB_INT_Disable(USB_INT_RXSTPI);
256

257
258
259
260
	NONATOMIC_BLOCK(NONATOMIC_FORCEOFF)
	{
		USB_Device_ProcessControlRequest();
	}
261

262
	Endpoint_SelectEndpoint(ENDPOINT_CONTROLEP);
263
	USB_INT_Enable(USB_INT_RXSTPI);
264
265
266
	Endpoint_SelectEndpoint(PrevSelectedEndpoint);
}
#endif