Endpoint_XMEGA.c 3.98 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
39
40
41
/*
             LUFA Library
     Copyright (C) Dean Camera, 2011.

  dean [at] fourwalledcubicle [dot] com
           www.lufa-lib.org
*/

/*
  Copyright 2011  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 "../USBMode.h"

#if defined(USB_CAN_BE_DEVICE)

#include "../Endpoint.h"

#if !defined(FIXED_CONTROL_ENDPOINT_SIZE)
uint8_t USB_Device_ControlEndpointSize = ENDPOINT_CONTROLEP_DEFAULT_SIZE;
#endif

42
Endpoint_FIFOPair_t           USB_Endpoint_FIFOs[ENDPOINT_DETAILS_MAXEP];
43

44
45
46
volatile uint8_t              USB_Endpoint_SelectedEndpoint;
volatile USB_EP_t*            USB_Endpoint_SelectedHandle;
volatile Endpoint_FIFO_t* USB_Endpoint_SelectedFIFO;
47
48
49
50
51
52
53
54

bool Endpoint_ConfigureEndpoint_PRV(const uint8_t Number,
                                    const uint8_t Direction,
                                    const uint8_t Config,
                                    const uint8_t Size)
{
	Endpoint_SelectEndpoint(Number | Direction);
	
55
56
57
58
59
	USB_Endpoint_SelectedHandle->CTRL    = 0;
	USB_Endpoint_SelectedHandle->STATUS  = (Direction == ENDPOINT_DIR_IN) ? USB_EP_BUSNACK0_bm : 0;
	USB_Endpoint_SelectedHandle->CTRL    = Config;
	USB_Endpoint_SelectedHandle->CNT     = 0;
	USB_Endpoint_SelectedHandle->DATAPTR = (intptr_t)&USB_Endpoint_SelectedFIFO->Data[0];
60
	
61
62
	USB_Endpoint_SelectedFIFO->Length    = (Direction == ENDPOINT_DIR_IN) ? Size : 0;
	USB_Endpoint_SelectedFIFO->Position  = 0;
63
64
65

	return true;
}
66
67
68

void Endpoint_ClearEndpoints(void)
{
69
70
	for (uint8_t EPNum = 0; EPNum < (ENDPOINT_TOTAL_ENDPOINTS * 2); EPNum++)
	  ((USB_EP_t*)&USB_EndpointTable)[EPNum].CTRL = 0;
71
72
73
74
}

void Endpoint_ClearStatusStage(void)
{
75
	if (USB_ControlRequest.bmRequestType & REQDIR_DEVICETOHOST)
76
	{
77
78
79
80
81
82
83
		while (!(Endpoint_IsOUTReceived()))
		{
			if (USB_DeviceState == DEVICE_STATE_Unattached)
			  return;
		}

		Endpoint_ClearOUT();
84
	}
85
86
87
88
89
90
91
	else
	{
		while (!(Endpoint_IsINReady()))
		{
			if (USB_DeviceState == DEVICE_STATE_Unattached)
			  return;
		}
92

93
94
		Endpoint_ClearIN();
	}
95
96
97
98
99
}

#if !defined(CONTROL_ONLY_DEVICE)
uint8_t Endpoint_WaitUntilReady(void)
{
100
101
102
103
104
105
106
107
108
109
	#if (USB_STREAM_TIMEOUT_MS < 0xFF)
	uint8_t  TimeoutMSRem = USB_STREAM_TIMEOUT_MS;
	#else
	uint16_t TimeoutMSRem = USB_STREAM_TIMEOUT_MS;
	#endif

	uint16_t PreviousFrameNumber = USB_Device_GetFrameNumber();

	for (;;)
	{
110
111
112
113
114
115
116
117
118
119
		if (Endpoint_GetEndpointDirection() == ENDPOINT_DIR_IN)
		{
			if (Endpoint_IsINReady())
			  return ENDPOINT_READYWAIT_NoError;
		}
		else
		{
			if (Endpoint_IsOUTReceived())
			  return ENDPOINT_READYWAIT_NoError;
		}
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
		
		uint8_t USB_DeviceState_LCL = USB_DeviceState;

		if (USB_DeviceState_LCL == DEVICE_STATE_Unattached)
		  return ENDPOINT_READYWAIT_DeviceDisconnected;
		else if (USB_DeviceState_LCL == DEVICE_STATE_Suspended)
		  return ENDPOINT_READYWAIT_BusSuspended;
		else if (Endpoint_IsStalled())
		  return ENDPOINT_READYWAIT_EndpointStalled;

		uint16_t CurrentFrameNumber = USB_Device_GetFrameNumber();

		if (CurrentFrameNumber != PreviousFrameNumber)
		{
			PreviousFrameNumber = CurrentFrameNumber;

			if (!(TimeoutMSRem--))
			  return ENDPOINT_READYWAIT_Timeout;
		}
	}
140
141
142
143
144
}
#endif

#endif