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300 lines
9.3 KiB
300 lines
9.3 KiB
/*
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LUFA Library
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Copyright (C) Dean Camera, 2010.
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dean [at] fourwalledcubicle [dot] com
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www.fourwalledcubicle.com
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*/
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/*
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Copyright 2010 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 disclaim 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 "../../HighLevel/USBMode.h"
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#if defined(USB_CAN_BE_DEVICE)
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#define __INCLUDE_FROM_CDC_CLASS_DEVICE_C
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#define __INCLUDE_FROM_CDC_DRIVER
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#include "CDC.h"
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void CDC_Device_Event_Stub(void)
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{
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}
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void CDC_Device_ProcessControlRequest(USB_ClassInfo_CDC_Device_t* 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 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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Endpoint_Write_Control_Stream_LE(&CDCInterfaceInfo->State.LineEncoding, sizeof(CDCInterfaceInfo->State.LineEncoding));
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Endpoint_ClearOUT();
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}
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break;
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case 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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Endpoint_Read_Control_Stream_LE(&CDCInterfaceInfo->State.LineEncoding, sizeof(CDCInterfaceInfo->State.LineEncoding));
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EVENT_CDC_Device_LineEncodingChanged(CDCInterfaceInfo);
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Endpoint_ClearIN();
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}
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break;
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case 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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CDCInterfaceInfo->State.ControlLineStates.HostToDevice = USB_ControlRequest.wValue;
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EVENT_CDC_Device_ControLineStateChanged(CDCInterfaceInfo);
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Endpoint_ClearStatusStage();
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}
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break;
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case 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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EVENT_CDC_Device_BreakSent(CDCInterfaceInfo, (uint8_t)USB_ControlRequest.wValue);
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Endpoint_ClearStatusStage();
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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* CDCInterfaceInfo)
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{
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memset(&CDCInterfaceInfo->State, 0x00, sizeof(CDCInterfaceInfo->State));
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if (!(Endpoint_ConfigureEndpoint(CDCInterfaceInfo->Config.DataINEndpointNumber, EP_TYPE_BULK,
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ENDPOINT_DIR_IN, CDCInterfaceInfo->Config.DataINEndpointSize,
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CDCInterfaceInfo->Config.DataINEndpointDoubleBank ? ENDPOINT_BANK_DOUBLE : ENDPOINT_BANK_SINGLE)))
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{
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return false;
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}
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if (!(Endpoint_ConfigureEndpoint(CDCInterfaceInfo->Config.DataOUTEndpointNumber, EP_TYPE_BULK,
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ENDPOINT_DIR_OUT, CDCInterfaceInfo->Config.DataOUTEndpointSize,
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CDCInterfaceInfo->Config.DataOUTEndpointDoubleBank ? ENDPOINT_BANK_DOUBLE : ENDPOINT_BANK_SINGLE)))
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{
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return false;
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}
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if (!(Endpoint_ConfigureEndpoint(CDCInterfaceInfo->Config.NotificationEndpointNumber, EP_TYPE_INTERRUPT,
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ENDPOINT_DIR_IN, CDCInterfaceInfo->Config.NotificationEndpointSize,
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CDCInterfaceInfo->Config.NotificationEndpointDoubleBank ? ENDPOINT_BANK_DOUBLE : ENDPOINT_BANK_SINGLE)))
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{
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return false;
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}
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return true;
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}
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void CDC_Device_USBTask(USB_ClassInfo_CDC_Device_t* 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.DataOUTEndpointNumber);
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if (Endpoint_IsOUTReceived() && !(Endpoint_BytesInEndpoint()))
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Endpoint_ClearOUT();
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CDC_Device_Flush(CDCInterfaceInfo);
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}
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uint8_t CDC_Device_SendString(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo, char* const Data, 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.DataINEndpointNumber);
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return Endpoint_Write_Stream_LE(Data, Length, NO_STREAM_CALLBACK);
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}
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uint8_t CDC_Device_SendByte(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo, 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.DataINEndpointNumber);
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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_Byte(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.DataINEndpointNumber);
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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.DataOUTEndpointNumber);
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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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uint8_t CDC_Device_ReceiveByte(USB_ClassInfo_CDC_Device_t* 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.DataOUTEndpointNumber);
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uint8_t DataByte = Endpoint_Read_Byte();
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if (!(Endpoint_BytesInEndpoint()))
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Endpoint_ClearOUT();
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return DataByte;
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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.NotificationEndpointNumber);
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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 = NOTIF_SerialState,
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.wValue = 0,
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.wIndex = 0,
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.wLength = sizeof(CDCInterfaceInfo->State.ControlLineStates.DeviceToHost),
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};
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Endpoint_Write_Stream_LE(&Notification, sizeof(USB_Request_Header_t), NO_STREAM_CALLBACK);
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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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NO_STREAM_CALLBACK);
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Endpoint_ClearIN();
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}
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void CDC_Device_CreateStream(USB_ClassInfo_CDC_Device_t* CDCInterfaceInfo, FILE* 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* CDCInterfaceInfo, FILE* 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, 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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if (!(CDC_Device_BytesReceived((USB_ClassInfo_CDC_Device_t*)fdev_get_udata(Stream))))
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return _FDEV_EOF;
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return CDC_Device_ReceiveByte((USB_ClassInfo_CDC_Device_t*)fdev_get_udata(Stream));
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}
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static int CDC_Device_getchar_Blocking(FILE* Stream)
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{
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while (!(CDC_Device_BytesReceived((USB_ClassInfo_CDC_Device_t*)fdev_get_udata(Stream))))
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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 CDC_Device_ReceiveByte((USB_ClassInfo_CDC_Device_t*)fdev_get_udata(Stream));
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}
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#endif
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