+++ /dev/null
-/*\r
- LUFA Library\r
- Copyright (C) Dean Camera, 2009.\r
- \r
- dean [at] fourwalledcubicle [dot] com\r
- www.fourwalledcubicle.com\r
-*/\r
-\r
-/*\r
- Copyright 2009 Dean Camera (dean [at] fourwalledcubicle [dot] com)\r
-\r
- Permission to use, copy, modify, and distribute this software\r
- and its documentation for any purpose and without fee is hereby\r
- granted, provided that the above copyright notice appear in all\r
- copies and that both that the copyright notice and this\r
- permission notice and warranty disclaimer appear in supporting\r
- documentation, and that the name of the author not be used in\r
- advertising or publicity pertaining to distribution of the\r
- software without specific, written prior permission.\r
-\r
- The author disclaim all warranties with regard to this\r
- software, including all implied warranties of merchantability\r
- and fitness. In no event shall the author be liable for any\r
- special, indirect or consequential damages or any damages\r
- whatsoever resulting from loss of use, data or profits, whether\r
- in an action of contract, negligence or other tortious action,\r
- arising out of or in connection with the use or performance of\r
- this software.\r
-*/\r
-\r
-/** \file\r
- *\r
- * Still Image Device commands, to issue PIMA commands to the device for\r
- * reading device status, capacity, and other characteristics as well as\r
- * reading and writing of stored image data.\r
- */\r
-\r
-#include "StillImageCommands.h"\r
-\r
-/* Globals: */\r
-/** PIMA block container for the block to send to the device */\r
-PIMA_Container_t PIMA_SendBlock;\r
-\r
-/** PIMA block container for the last received block from the device */\r
-PIMA_Container_t PIMA_ReceivedBlock;\r
-\r
-/** PIMA block container for the last event block received from the device */\r
-PIMA_Container_t PIMA_EventBlock;\r
-\r
-\r
-/** Function to send the PIMA command container to the attached still image device. */\r
-void SImage_SendBlockHeader(void)\r
-{\r
- /* Unfreeze the data OUT pipe ready for data transmission */\r
- Pipe_SelectPipe(SIMAGE_DATA_OUT_PIPE);\r
- Pipe_Unfreeze();\r
-\r
- /* Write the PIMA block to the data OUT pipe */\r
- Pipe_Write_Stream_LE(&PIMA_SendBlock, PIMA_COMMAND_SIZE(0));\r
- \r
- /* If the block type is a command, send its parameters (if any) */\r
- if (PIMA_SendBlock.Type == CType_CommandBlock)\r
- {\r
- /* Determine the size of the parameters in the block via the data length attribute */\r
- uint8_t ParamBytes = (PIMA_SendBlock.DataLength - PIMA_COMMAND_SIZE(0));\r
-\r
- /* Check if any parameters in the command block */\r
- if (ParamBytes)\r
- {\r
- /* Write the PIMA parameters to the data OUT pipe */\r
- Pipe_Write_Stream_LE(&PIMA_SendBlock.Params, ParamBytes);\r
- }\r
- \r
- /* Send the PIMA command block to the attached device */\r
- Pipe_ClearOUT();\r
- }\r
- \r
- /* Freeze pipe after use */\r
- Pipe_Freeze();\r
-}\r
-\r
-/** Function to receive a PIMA event container from the attached still image device. */\r
-void SImage_RecieveEventHeader(void)\r
-{\r
- /* Unfreeze the events pipe */\r
- Pipe_SelectPipe(SIMAGE_EVENTS_PIPE);\r
- Pipe_Unfreeze();\r
- \r
- /* Read in the event data into the global structure */\r
- Pipe_Read_Stream_LE(&PIMA_EventBlock, sizeof(PIMA_EventBlock));\r
- \r
- /* Clear the pipe after read complete to prepare for next event */\r
- Pipe_ClearIN();\r
- \r
- /* Freeze the event pipe again after use */\r
- Pipe_Freeze();\r
-}\r
-\r
-/** Function to receive a PIMA response container from the attached still image device. */\r
-uint8_t SImage_RecieveBlockHeader(void)\r
-{\r
- uint16_t TimeoutMSRem = COMMAND_DATA_TIMEOUT_MS;\r
-\r
- /* Unfreeze the data IN pipe */\r
- Pipe_SelectPipe(SIMAGE_DATA_IN_PIPE);\r
- Pipe_Unfreeze();\r
- \r
- /* Wait until data received on the IN pipe */\r
- while (!(Pipe_IsReadWriteAllowed()))\r
- {\r
- /* Check to see if a new frame has been issued (1ms elapsed) */\r
- if (FrameElapsed)\r
- {\r
- /* Clear the flag and decrement the timeout period counter */\r
- FrameElapsed = false;\r
- TimeoutMSRem--;\r
-\r
- /* Check to see if the timeout period for the command has elapsed */\r
- if (!(TimeoutMSRem))\r
- {\r
- /* Return error code */\r
- return PIPE_RWSTREAM_Timeout;\r
- }\r
- }\r
- \r
- Pipe_SelectPipe(SIMAGE_DATA_OUT_PIPE);\r
-\r
- /* Check if pipe stalled (command failed by device) */\r
- if (Pipe_IsStalled())\r
- {\r
- /* Clear the stall condition on the OUT pipe */\r
- SImage_ClearPipeStall(SIMAGE_DATA_OUT_PIPE);\r
-\r
- /* Return error code and break out of the loop */\r
- return PIPE_RWSTREAM_PipeStalled;\r
- }\r
-\r
- Pipe_SelectPipe(SIMAGE_DATA_IN_PIPE);\r
-\r
- /* Check if pipe stalled (command failed by device) */\r
- if (Pipe_IsStalled())\r
- {\r
- /* Clear the stall condition on the IN pipe */\r
- SImage_ClearPipeStall(SIMAGE_DATA_IN_PIPE);\r
-\r
- /* Return error code */\r
- return PIPE_RWSTREAM_PipeStalled;\r
- }\r
- \r
- /* Check to see if the device was disconnected, if so exit function */\r
- if (!(USB_IsConnected))\r
- {\r
- /* Return error code */\r
- return PIPE_RWSTREAM_DeviceDisconnected;\r
- }\r
- };\r
- \r
- /* Freeze OUT pipe after use */\r
- Pipe_SelectPipe(SIMAGE_DATA_OUT_PIPE);\r
- Pipe_Freeze();\r
-\r
- /* Select the IN data pipe for data reception */\r
- Pipe_SelectPipe(SIMAGE_DATA_IN_PIPE);\r
- \r
- /* Load in the response from the attached device */\r
- Pipe_Read_Stream_LE(&PIMA_ReceivedBlock, PIMA_COMMAND_SIZE(0));\r
- \r
- /* Check if the returned block type is a response block */\r
- if (PIMA_ReceivedBlock.Type == CType_ResponseBlock)\r
- {\r
- /* Determine the size of the parameters in the block via the data length attribute */\r
- uint8_t ParamBytes = (PIMA_ReceivedBlock.DataLength - PIMA_COMMAND_SIZE(0));\r
-\r
- /* Check if the device has returned any parameters */\r
- if (ParamBytes)\r
- {\r
- /* Read the PIMA parameters from the data IN pipe */\r
- Pipe_Read_Stream_LE(&PIMA_ReceivedBlock.Params, ParamBytes);\r
- }\r
- \r
- /* Clear pipe bank after use */\r
- Pipe_ClearIN();\r
- }\r
- \r
- /* Freeze the IN pipe after use */\r
- Pipe_Freeze();\r
- \r
- return PIPE_RWSTREAM_NoError;\r
-}\r
-\r
-/** Function to send the given data to the device, after a command block has been issued.\r
- *\r
- * \param Buffer Source data buffer to send to the device\r
- * \param Bytes Number of bytes to send\r
- */\r
-void SImage_SendData(void* Buffer, uint16_t Bytes)\r
-{\r
- /* Unfreeze the data OUT pipe */\r
- Pipe_SelectPipe(SIMAGE_DATA_OUT_PIPE);\r
- Pipe_Unfreeze();\r
- \r
- /* Write the data contents to the pipe */\r
- Pipe_Write_Stream_LE(Buffer, Bytes);\r
-\r
- /* Send the last packet to the attached device */\r
- Pipe_ClearOUT();\r
-\r
- /* Freeze the pipe again after use */\r
- Pipe_Freeze();\r
-}\r
-\r
-/** Function to receive the given data to the device, after a response block has been received.\r
- *\r
- * \param Buffer Destination data buffer to put read bytes from the device\r
- * \param Bytes Number of bytes to receive\r
- *\r
- * \return A value from the Pipe_Stream_RW_ErrorCodes_t enum\r
- */\r
-uint8_t SImage_ReadData(void* Buffer, uint16_t Bytes)\r
-{\r
- uint8_t ErrorCode;\r
-\r
- /* Unfreeze the data IN pipe */\r
- Pipe_SelectPipe(SIMAGE_DATA_IN_PIPE);\r
- Pipe_Unfreeze();\r
-\r
- /* Read in the data into the buffer */\r
- ErrorCode = Pipe_Read_Stream_LE(Buffer, Bytes);\r
-\r
- /* Freeze the pipe again after use */\r
- Pipe_Freeze();\r
- \r
- return ErrorCode;\r
-}\r
-\r
-/** Function to test if a PIMA event block is waiting to be read in from the attached device.\r
- *\r
- * \return True if an event is waiting to be read in from the device, false otherwise\r
- */\r
-bool SImage_IsEventReceived(void)\r
-{\r
- bool IsEventReceived = false;\r
-\r
- /* Unfreeze the Event pipe */\r
- Pipe_SelectPipe(SIMAGE_EVENTS_PIPE);\r
- Pipe_Unfreeze();\r
- \r
- /* If the pipe contains data, an event has been received */\r
- if (Pipe_BytesInPipe())\r
- IsEventReceived = true;\r
- \r
- /* Freeze the pipe after use */\r
- Pipe_Freeze();\r
- \r
- return IsEventReceived;\r
-}\r
-\r
-/** Clears the stall condition in the attached device on the nominated endpoint number.\r
- *\r
- * \param EndpointNum Endpoint number in the attached device whose stall condition is to be cleared\r
- *\r
- * \return A value from the USB_Host_SendControlErrorCodes_t enum\r
- */\r
-uint8_t SImage_ClearPipeStall(const uint8_t EndpointNum)\r
-{\r
- USB_ControlRequest = (USB_Request_Header_t)\r
- {\r
- .bmRequestType = (REQDIR_HOSTTODEVICE | REQTYPE_STANDARD | REQREC_ENDPOINT),\r
- .bRequest = REQ_ClearFeature,\r
- .wValue = FEATURE_ENDPOINT_HALT,\r
- .wIndex = EndpointNum,\r
- .wLength = 0,\r
- };\r
- \r
- /* Select the control pipe for the request transfer */\r
- Pipe_SelectPipe(PIPE_CONTROLPIPE);\r
-\r
- return USB_Host_SendControlRequest(NULL);\r
-}\r
projects / pub / lufa.git / blobdiff