350 lines
11 KiB
C
350 lines
11 KiB
C
/*
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LUFA Library
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Copyright (C) Dean Camera, 2014.
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dean [at] fourwalledcubicle [dot] com
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www.lufa-lib.org
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*/
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/*
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Copyright 2014 Dean Camera (dean [at] fourwalledcubicle [dot] com)
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Permission to use, copy, modify, distribute, and sell this
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software and its documentation for any purpose is hereby granted
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without fee, provided that the above copyright notice appear in
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all copies and that both that the copyright notice and this
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permission notice and warranty disclaimer appear in supporting
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documentation, and that the name of the author not be used in
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advertising or publicity pertaining to distribution of the
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software without specific, written prior permission.
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The author disclaims all warranties with regard to this
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software, including all implied warranties of merchantability
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and fitness. In no event shall the author be liable for any
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special, indirect or consequential damages or any damages
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whatsoever resulting from loss of use, data or profits, whether
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in an action of contract, negligence or other tortious action,
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arising out of or in connection with the use or performance of
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this software.
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*/
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#define __INCLUDE_FROM_USB_DRIVER
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#include "../../Core/USBMode.h"
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#if defined(USB_CAN_BE_DEVICE)
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#define __INCLUDE_FROM_CDC_DRIVER
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#define __INCLUDE_FROM_CDC_DEVICE_C
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#include "CDCClassDevice.h"
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void CDC_Device_ProcessControlRequest(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo)
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{
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if (!(Endpoint_IsSETUPReceived()))
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return;
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if (USB_ControlRequest.wIndex != CDCInterfaceInfo->Config.ControlInterfaceNumber)
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return;
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switch (USB_ControlRequest.bRequest)
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{
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case CDC_REQ_GetLineEncoding:
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if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))
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{
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Endpoint_ClearSETUP();
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while (!(Endpoint_IsINReady()));
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Endpoint_Write_32_LE(CDCInterfaceInfo->State.LineEncoding.BaudRateBPS);
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Endpoint_Write_8(CDCInterfaceInfo->State.LineEncoding.CharFormat);
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Endpoint_Write_8(CDCInterfaceInfo->State.LineEncoding.ParityType);
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Endpoint_Write_8(CDCInterfaceInfo->State.LineEncoding.DataBits);
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Endpoint_ClearIN();
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Endpoint_ClearStatusStage();
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}
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break;
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case CDC_REQ_SetLineEncoding:
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if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
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{
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Endpoint_ClearSETUP();
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while (!(Endpoint_IsOUTReceived()))
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{
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if (USB_DeviceState == DEVICE_STATE_Unattached)
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return;
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}
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CDCInterfaceInfo->State.LineEncoding.BaudRateBPS = Endpoint_Read_32_LE();
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CDCInterfaceInfo->State.LineEncoding.CharFormat = Endpoint_Read_8();
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CDCInterfaceInfo->State.LineEncoding.ParityType = Endpoint_Read_8();
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CDCInterfaceInfo->State.LineEncoding.DataBits = Endpoint_Read_8();
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Endpoint_ClearOUT();
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Endpoint_ClearStatusStage();
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EVENT_CDC_Device_LineEncodingChanged(CDCInterfaceInfo);
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}
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break;
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case CDC_REQ_SetControlLineState:
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if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
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{
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Endpoint_ClearSETUP();
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Endpoint_ClearStatusStage();
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CDCInterfaceInfo->State.ControlLineStates.HostToDevice = USB_ControlRequest.wValue;
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EVENT_CDC_Device_ControLineStateChanged(CDCInterfaceInfo);
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}
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break;
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case CDC_REQ_SendBreak:
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if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
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{
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Endpoint_ClearSETUP();
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Endpoint_ClearStatusStage();
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EVENT_CDC_Device_BreakSent(CDCInterfaceInfo, (uint8_t)USB_ControlRequest.wValue);
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}
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break;
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}
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}
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bool CDC_Device_ConfigureEndpoints(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo)
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{
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memset(&CDCInterfaceInfo->State, 0x00, sizeof(CDCInterfaceInfo->State));
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CDCInterfaceInfo->Config.DataINEndpoint.Type = EP_TYPE_BULK;
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CDCInterfaceInfo->Config.DataOUTEndpoint.Type = EP_TYPE_BULK;
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CDCInterfaceInfo->Config.NotificationEndpoint.Type = EP_TYPE_INTERRUPT;
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if (!(Endpoint_ConfigureEndpointTable(&CDCInterfaceInfo->Config.DataINEndpoint, 1)))
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return false;
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if (!(Endpoint_ConfigureEndpointTable(&CDCInterfaceInfo->Config.DataOUTEndpoint, 1)))
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return false;
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if (!(Endpoint_ConfigureEndpointTable(&CDCInterfaceInfo->Config.NotificationEndpoint, 1)))
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return false;
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return true;
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}
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void CDC_Device_USBTask(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo)
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{
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if ((USB_DeviceState != DEVICE_STATE_Configured) || !(CDCInterfaceInfo->State.LineEncoding.BaudRateBPS))
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return;
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#if !defined(NO_CLASS_DRIVER_AUTOFLUSH)
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Endpoint_SelectEndpoint(CDCInterfaceInfo->Config.DataINEndpoint.Address);
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if (Endpoint_IsINReady())
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CDC_Device_Flush(CDCInterfaceInfo);
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#endif
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}
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uint8_t CDC_Device_SendString(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo,
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const char* const String)
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{
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if ((USB_DeviceState != DEVICE_STATE_Configured) || !(CDCInterfaceInfo->State.LineEncoding.BaudRateBPS))
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return ENDPOINT_RWSTREAM_DeviceDisconnected;
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Endpoint_SelectEndpoint(CDCInterfaceInfo->Config.DataINEndpoint.Address);
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return Endpoint_Write_Stream_LE(String, strlen(String), NULL);
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}
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uint8_t CDC_Device_SendData(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo,
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const void* const Buffer,
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const uint16_t Length)
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{
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if ((USB_DeviceState != DEVICE_STATE_Configured) || !(CDCInterfaceInfo->State.LineEncoding.BaudRateBPS))
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return ENDPOINT_RWSTREAM_DeviceDisconnected;
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Endpoint_SelectEndpoint(CDCInterfaceInfo->Config.DataINEndpoint.Address);
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return Endpoint_Write_Stream_LE(Buffer, Length, NULL);
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}
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uint8_t CDC_Device_SendByte(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo,
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const uint8_t Data)
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{
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if ((USB_DeviceState != DEVICE_STATE_Configured) || !(CDCInterfaceInfo->State.LineEncoding.BaudRateBPS))
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return ENDPOINT_RWSTREAM_DeviceDisconnected;
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Endpoint_SelectEndpoint(CDCInterfaceInfo->Config.DataINEndpoint.Address);
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if (!(Endpoint_IsReadWriteAllowed()))
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{
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Endpoint_ClearIN();
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uint8_t ErrorCode;
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if ((ErrorCode = Endpoint_WaitUntilReady()) != ENDPOINT_READYWAIT_NoError)
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return ErrorCode;
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}
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Endpoint_Write_8(Data);
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return ENDPOINT_READYWAIT_NoError;
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}
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uint8_t CDC_Device_Flush(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo)
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{
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if ((USB_DeviceState != DEVICE_STATE_Configured) || !(CDCInterfaceInfo->State.LineEncoding.BaudRateBPS))
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return ENDPOINT_RWSTREAM_DeviceDisconnected;
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uint8_t ErrorCode;
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Endpoint_SelectEndpoint(CDCInterfaceInfo->Config.DataINEndpoint.Address);
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if (!(Endpoint_BytesInEndpoint()))
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return ENDPOINT_READYWAIT_NoError;
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bool BankFull = !(Endpoint_IsReadWriteAllowed());
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Endpoint_ClearIN();
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if (BankFull)
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{
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if ((ErrorCode = Endpoint_WaitUntilReady()) != ENDPOINT_READYWAIT_NoError)
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return ErrorCode;
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Endpoint_ClearIN();
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}
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return ENDPOINT_READYWAIT_NoError;
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}
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uint16_t CDC_Device_BytesReceived(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo)
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{
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if ((USB_DeviceState != DEVICE_STATE_Configured) || !(CDCInterfaceInfo->State.LineEncoding.BaudRateBPS))
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return 0;
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Endpoint_SelectEndpoint(CDCInterfaceInfo->Config.DataOUTEndpoint.Address);
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if (Endpoint_IsOUTReceived())
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{
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if (!(Endpoint_BytesInEndpoint()))
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{
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Endpoint_ClearOUT();
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return 0;
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}
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else
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{
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return Endpoint_BytesInEndpoint();
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}
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}
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else
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{
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return 0;
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}
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}
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int16_t CDC_Device_ReceiveByte(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo)
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{
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if ((USB_DeviceState != DEVICE_STATE_Configured) || !(CDCInterfaceInfo->State.LineEncoding.BaudRateBPS))
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return -1;
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int16_t ReceivedByte = -1;
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Endpoint_SelectEndpoint(CDCInterfaceInfo->Config.DataOUTEndpoint.Address);
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if (Endpoint_IsOUTReceived())
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{
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if (Endpoint_BytesInEndpoint())
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ReceivedByte = Endpoint_Read_8();
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if (!(Endpoint_BytesInEndpoint()))
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Endpoint_ClearOUT();
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}
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return ReceivedByte;
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}
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void CDC_Device_SendControlLineStateChange(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo)
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{
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if ((USB_DeviceState != DEVICE_STATE_Configured) || !(CDCInterfaceInfo->State.LineEncoding.BaudRateBPS))
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return;
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Endpoint_SelectEndpoint(CDCInterfaceInfo->Config.NotificationEndpoint.Address);
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USB_Request_Header_t Notification = (USB_Request_Header_t)
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{
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.bmRequestType = (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE),
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.bRequest = CDC_NOTIF_SerialState,
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.wValue = CPU_TO_LE16(0),
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.wIndex = CPU_TO_LE16(0),
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.wLength = CPU_TO_LE16(sizeof(CDCInterfaceInfo->State.ControlLineStates.DeviceToHost)),
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};
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Endpoint_Write_Stream_LE(&Notification, sizeof(USB_Request_Header_t), NULL);
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Endpoint_Write_Stream_LE(&CDCInterfaceInfo->State.ControlLineStates.DeviceToHost,
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sizeof(CDCInterfaceInfo->State.ControlLineStates.DeviceToHost),
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NULL);
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Endpoint_ClearIN();
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}
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#if defined(FDEV_SETUP_STREAM)
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void CDC_Device_CreateStream(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo,
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FILE* const Stream)
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{
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*Stream = (FILE)FDEV_SETUP_STREAM(CDC_Device_putchar, CDC_Device_getchar, _FDEV_SETUP_RW);
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fdev_set_udata(Stream, CDCInterfaceInfo);
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}
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void CDC_Device_CreateBlockingStream(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo,
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FILE* const Stream)
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{
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*Stream = (FILE)FDEV_SETUP_STREAM(CDC_Device_putchar, CDC_Device_getchar_Blocking, _FDEV_SETUP_RW);
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fdev_set_udata(Stream, CDCInterfaceInfo);
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}
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static int CDC_Device_putchar(char c,
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FILE* Stream)
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{
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return CDC_Device_SendByte((USB_ClassInfo_CDC_Device_t*)fdev_get_udata(Stream), c) ? _FDEV_ERR : 0;
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}
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static int CDC_Device_getchar(FILE* Stream)
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{
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int16_t ReceivedByte = CDC_Device_ReceiveByte((USB_ClassInfo_CDC_Device_t*)fdev_get_udata(Stream));
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if (ReceivedByte < 0)
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return _FDEV_EOF;
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return ReceivedByte;
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}
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static int CDC_Device_getchar_Blocking(FILE* Stream)
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{
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int16_t ReceivedByte;
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while ((ReceivedByte = CDC_Device_ReceiveByte((USB_ClassInfo_CDC_Device_t*)fdev_get_udata(Stream))) < 0)
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{
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if (USB_DeviceState == DEVICE_STATE_Unattached)
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return _FDEV_EOF;
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CDC_Device_USBTask((USB_ClassInfo_CDC_Device_t*)fdev_get_udata(Stream));
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USB_USBTask();
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}
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return ReceivedByte;
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}
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#endif
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__WEAK void EVENT_CDC_Device_LineEncodingChanged(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo)
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{
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}
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__WEAK void EVENT_CDC_Device_ControLineStateChanged(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo)
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{
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}
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__WEAK void EVENT_CDC_Device_BreakSent(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo,
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const uint8_t Duration)
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{
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}
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#endif
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