Work in progress - checked in for backup only.
Richard Barry
15 years ago
parent
02db572328
commit
e03f239692
@ -0,0 +1,214 @@
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/*
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FreeRTOS V6.0.5 - Copyright (C) 2010 Real Time Engineers Ltd.
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***************************************************************************
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* *
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* If you are: *
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* *
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* + New to FreeRTOS, *
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* + Wanting to learn FreeRTOS or multitasking in general quickly *
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* + Looking for basic training, *
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||||||
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* + Wanting to improve your FreeRTOS skills and productivity *
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* *
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||||||
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* then take a look at the FreeRTOS eBook *
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||||||
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* *
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* "Using the FreeRTOS Real Time Kernel - a Practical Guide" *
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* http://www.FreeRTOS.org/Documentation *
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* *
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* A pdf reference manual is also available. Both are usually delivered *
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* to your inbox within 20 minutes to two hours when purchased between 8am *
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* and 8pm GMT (although please allow up to 24 hours in case of *
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* exceptional circumstances). Thank you for your support! *
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* *
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***************************************************************************
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This file is part of the FreeRTOS distribution.
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FreeRTOS is free software; you can redistribute it and/or modify it under
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||||||
|
the terms of the GNU General Public License (version 2) as published by the
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||||||
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Free Software Foundation AND MODIFIED BY the FreeRTOS exception.
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***NOTE*** The exception to the GPL is included to allow you to distribute
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||||||
|
a combined work that includes FreeRTOS without being obliged to provide the
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||||||
|
source code for proprietary components outside of the FreeRTOS kernel.
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||||||
|
FreeRTOS is distributed in the hope that it will be useful, but WITHOUT
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||||||
|
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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||||||
|
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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||||||
|
more details. You should have received a copy of the GNU General Public
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||||||
|
License and the FreeRTOS license exception along with FreeRTOS; if not it
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||||||
|
can be viewed here: http://www.freertos.org/a00114.html and also obtained
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||||||
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by writing to Richard Barry, contact details for whom are available on the
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FreeRTOS WEB site.
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||||||
|
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1 tab == 4 spaces!
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||||||
|
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http://www.FreeRTOS.org - Documentation, latest information, license and
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||||||
|
contact details.
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||||||
|
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||||||
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http://www.SafeRTOS.com - A version that is certified for use in safety
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||||||
|
critical systems.
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||||||
|
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||||||
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http://www.OpenRTOS.com - Commercial support, development, porting,
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|
licensing and training services.
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*/
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#include <string.h>
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#include "FreeRTOS.h"
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#include "CircularBuffer.h"
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/*-----------------------------------------------------------*/
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/* See the header file for function information. */
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void vInitialiseCircularBuffer( xCircularBuffer *pxBuffer,
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unsigned char *pucDataBuffer,
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unsigned long ulBufferSizeInBytes,
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unsigned long ulDataSizeInBytes,
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void *pvTag
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)
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{
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pxBuffer->pucDataBuffer = pucDataBuffer;
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pxBuffer->ulBufferSizeInBytes = ulBufferSizeInBytes;
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pxBuffer->pucNextByteToRead = pucDataBuffer;
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pxBuffer->pucNextByteToWrite = pucDataBuffer;
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pxBuffer->ulDataSizeInBytes = ulDataSizeInBytes;
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pxBuffer->pvTag = pvTag;
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}
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/*-----------------------------------------------------------*/
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/* See the header file for function information. */
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unsigned long ulBytesInCircularBuffer( const xCircularBuffer * const pxBuffer )
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{
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unsigned char *pucNextByteToWrite;
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unsigned long ulReturn;
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if( pxBuffer->pvTag != NULL )
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{
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/* Locate the position that the DMA will next write to. */
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pucNextByteToWrite = ( unsigned char * ) *( ( unsigned long * ) pxBuffer->pvTag );
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}
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else
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{
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/* Locate the position the application will next write to. */
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pucNextByteToWrite = pxBuffer->pucNextByteToWrite;
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}
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/* Has the write pointer wrapped back to the start of the buffer
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compared to our read pointer? */
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if( ( unsigned long ) pucNextByteToWrite >= ( unsigned long ) pxBuffer->pucNextByteToRead )
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{
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/* The write pointer is still ahead of us in the buffer. The amount of
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data available is simple the gap between the two pointers. */
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ulReturn = ( unsigned long ) pucNextByteToWrite - ( unsigned long ) pxBuffer->pucNextByteToRead;
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}
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else
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{
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/* The write pointer has wrapped back to the start. The amount of data
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available is equal to the data between the read pointer and the end of
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the buffer...*/
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ulReturn = ( unsigned long ) &( pxBuffer->pucDataBuffer[ pxBuffer->ulBufferSizeInBytes ] ) - ( unsigned long ) pxBuffer->pucNextByteToRead;
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/*... plus the data between the start of the buffer and the write
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pointer. */
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ulReturn += ( unsigned long ) pucNextByteToWrite - ( unsigned long ) pxBuffer->pucDataBuffer;
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}
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return ulReturn;
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}
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/*-----------------------------------------------------------*/
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unsigned long ulCopyReceivedBytes( xCircularBuffer *pxBuffer, unsigned char * pucBuffer, unsigned long ulWantedBytes )
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{
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unsigned char *pucNextByteToWrite;
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unsigned long ulNumberOfBytesRead = 0, ulNumberOfBytesAvailable;
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if( pxBuffer->pvTag != NULL )
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{
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/* Locate the position that the DMA will next write to. */
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pucNextByteToWrite = ( unsigned char * ) *( ( unsigned long * ) pxBuffer->pvTag );
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}
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else
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{
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/* Locate the position that the application will next write to. */
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pucNextByteToWrite = pxBuffer->pucNextByteToWrite;
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}
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if( ( unsigned long ) pucNextByteToWrite >= ( unsigned long ) pxBuffer->pucNextByteToRead )
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{
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/* The write pointer has not wrapped around from our read pointer.
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Clip the number of bytes to read to the number available if the number
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available is less than that wanted. */
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ulNumberOfBytesAvailable = ( unsigned long ) pucNextByteToWrite - ( unsigned long ) ( pxBuffer->pucNextByteToRead );
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if( ulNumberOfBytesAvailable < ulWantedBytes )
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{
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ulWantedBytes = ulNumberOfBytesAvailable;
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}
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/* Copy the data from ulRxBuffer into the application buffer. */
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memcpy( pucBuffer, pxBuffer->pucNextByteToRead, ulWantedBytes );
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/* Move up our read buffer. */
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pxBuffer->pucNextByteToRead += ulWantedBytes;
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ulNumberOfBytesRead = ulWantedBytes;
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}
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else
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{
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/* The write pointer has wrapped around from our read pointer. Is there
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enough space from our read pointer to the end of the buffer without the
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read pointer also wrapping around? */
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ulNumberOfBytesAvailable = ( unsigned long ) &( pxBuffer->pucDataBuffer[ pxBuffer->ulBufferSizeInBytes ] ) - ( unsigned long ) pxBuffer->pucNextByteToRead;
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if( ulNumberOfBytesAvailable >= ulWantedBytes )
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{
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/* There is enough space from our current read pointer up to the end
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of the buffer to obtain the number of bytes requested. */
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memcpy( pucBuffer, pxBuffer->pucNextByteToRead, ulWantedBytes );
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/* Move up our read buffer. */
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pxBuffer->pucNextByteToRead += ulWantedBytes;
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ulNumberOfBytesRead = ulWantedBytes;
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}
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else
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{
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/* There is not enough space up to the end of the buffer to obtain
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the number of bytes requested. Copy up to the end of the buffer. */
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memcpy( pucBuffer, pxBuffer->pucNextByteToRead, ulNumberOfBytesAvailable );
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ulNumberOfBytesRead = ulNumberOfBytesAvailable;
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/* Then wrap back to the beginning of the buffer to attempt to
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read the remaining bytes. */
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pxBuffer->pucNextByteToRead = pxBuffer->pucDataBuffer;
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pucBuffer += ulNumberOfBytesAvailable;
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/* How many more bytes do we want to read? */
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ulWantedBytes -= ulNumberOfBytesAvailable;
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/* Clip the number of bytes we are going to read to the number
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available if this is less than the number we want. */
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ulNumberOfBytesAvailable = ( unsigned long ) pucNextByteToWrite - ( unsigned long ) pxBuffer->pucNextByteToRead;
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if( ulNumberOfBytesAvailable < ulWantedBytes )
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{
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ulWantedBytes = ulNumberOfBytesAvailable;
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}
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/* Copy these into the buffer. */
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memcpy( pucBuffer, pxBuffer->pucNextByteToRead, ulWantedBytes );
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/* Move up our read buffer. */
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pxBuffer->pucNextByteToRead += ulWantedBytes;
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ulNumberOfBytesRead += ulWantedBytes;
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}
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}
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/* Check we have not moved our read pointer off the end of the buffer. */
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if( ( unsigned long ) pxBuffer->pucNextByteToRead >= ( unsigned long ) &( pxBuffer->pucDataBuffer[ pxBuffer->ulBufferSizeInBytes ] ) )
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{
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pxBuffer->pucNextByteToRead = pxBuffer->pucDataBuffer;
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}
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/* Return the number of bytes read. */
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return ulNumberOfBytesRead;
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}
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@ -0,0 +1,115 @@
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/*
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FreeRTOS V6.0.5 - Copyright (C) 2010 Real Time Engineers Ltd.
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***************************************************************************
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* *
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* If you are: *
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* *
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* + New to FreeRTOS, *
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|
* + Wanting to learn FreeRTOS or multitasking in general quickly *
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|
* + Looking for basic training, *
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||||||
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* + Wanting to improve your FreeRTOS skills and productivity *
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* *
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||||||
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* then take a look at the FreeRTOS eBook *
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* *
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* "Using the FreeRTOS Real Time Kernel - a Practical Guide" *
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* http://www.FreeRTOS.org/Documentation *
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* *
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* A pdf reference manual is also available. Both are usually delivered *
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* to your inbox within 20 minutes to two hours when purchased between 8am *
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||||||
|
* and 8pm GMT (although please allow up to 24 hours in case of *
|
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* exceptional circumstances). Thank you for your support! *
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* *
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***************************************************************************
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This file is part of the FreeRTOS distribution.
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|
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FreeRTOS is free software; you can redistribute it and/or modify it under
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|
the terms of the GNU General Public License (version 2) as published by the
|
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|
Free Software Foundation AND MODIFIED BY the FreeRTOS exception.
|
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|
***NOTE*** The exception to the GPL is included to allow you to distribute
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|
a combined work that includes FreeRTOS without being obliged to provide the
|
||||||
|
source code for proprietary components outside of the FreeRTOS kernel.
|
||||||
|
FreeRTOS is distributed in the hope that it will be useful, but WITHOUT
|
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|
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
||||||
|
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
||||||
|
more details. You should have received a copy of the GNU General Public
|
||||||
|
License and the FreeRTOS license exception along with FreeRTOS; if not it
|
||||||
|
can be viewed here: http://www.freertos.org/a00114.html and also obtained
|
||||||
|
by writing to Richard Barry, contact details for whom are available on the
|
||||||
|
FreeRTOS WEB site.
|
||||||
|
|
||||||
|
1 tab == 4 spaces!
|
||||||
|
|
||||||
|
http://www.FreeRTOS.org - Documentation, latest information, license and
|
||||||
|
contact details.
|
||||||
|
|
||||||
|
http://www.SafeRTOS.com - A version that is certified for use in safety
|
||||||
|
critical systems.
|
||||||
|
|
||||||
|
http://www.OpenRTOS.com - Commercial support, development, porting,
|
||||||
|
licensing and training services.
|
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|
*/
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#ifndef CIRCULAR_BUFFER_H
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#define CIRCULAR_BUFFER_H
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/* Structure that holds the state of the circular buffer. */
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typedef struct
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{
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unsigned char *pucDataBuffer;
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unsigned long ulBufferSizeInBytes;
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unsigned char *pucNextByteToRead;
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unsigned char *pucNextByteToWrite;
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unsigned long ulDataSizeInBytes;
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void *pvTag;
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} xCircularBuffer;
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/*
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* Setup a circular buffer ready for use.
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*
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* pxBuffer : The xCicularBuffer structure being initialised.
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*
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* pucDataBuffer : The buffer to be used by the xCicularBuffer object.
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*
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* ulBufferSizeInBytes : The dimention of pucDataBuffer in bytes.
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*
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* ulDataSizeInBytes : The size of the data that is to be stored in the
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* circular buffer. For example, 4 if the buffer is used to hold
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* unsigned longs, 1 if the buffer is used to hold chars.
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*
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* pvTag : Can be used for anything, although normally used in conjunction with
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* a DMA register.
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*/
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void vInitialiseCircularBuffer( xCircularBuffer *pxBuffer,
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unsigned char *pucDataBuffer,
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unsigned long ulBufferSizeInBytes,
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unsigned long ulDataSizeInBytes,
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void *pvTag
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);
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/*
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* Returns the number of bytes that are currently available within the
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* buffer.
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*/
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unsigned long ulBytesInCircularBuffer( const xCircularBuffer * const pxBuffer );
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/*
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* Obtain bytes from the circular buffer. Data may have been placed in
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* the circular buffer by a DMA transfer or simply written to the buffer by
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* the application code.
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*
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* pxBuffer : The circular buffer from which data is to be read.
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*
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* pucBuffer : The buffer into which the received bytes should be copied.
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*
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* ulWantedBytes : The number of bytes we are going to attempt to receive
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* from the circular buffer.
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*
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* return : The actual number of bytes received from the circular buffer.
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* This might be less than the number of bytes we attempted to receive.
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*/
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unsigned long ulCopyReceivedBytes( xCircularBuffer *pxBuffer, unsigned char * pucBuffer, unsigned long ulWantedBytes );
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#endif
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@ -0,0 +1,482 @@
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/******************** (C) COPYRIGHT 2009 STMicroelectronics ********************
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* File Name : spi_flash.c
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* Author : MCD Application Team
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* Version : V2.0.0
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* Date : 04/27/2009
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* Description : This file provides a set of functions needed to manage the
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* communication between SPI peripheral and SPI M25P64 FLASH.
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********************************************************************************
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* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
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* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME.
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* AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT,
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* INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE
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* CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING
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* INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
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*******************************************************************************/
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/* Includes ------------------------------------------------------------------*/
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#include "spi_flash.h"
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/* Private typedef -----------------------------------------------------------*/
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#define SPI_FLASH_PageSize 0x100
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/* Private define ------------------------------------------------------------*/
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#define WRITE 0x02 /* Write to Memory instruction */
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#define WRSR 0x01 /* Write Status Register instruction */
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#define WREN 0x06 /* Write enable instruction */
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#define READ 0x03 /* Read from Memory instruction */
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#define RDSR 0x05 /* Read Status Register instruction */
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#define RDID 0x9F /* Read identification */
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#define SE 0xD8 /* Sector Erase instruction */
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#define BE 0xC7 /* Bulk Erase instruction */
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#define WIP_Flag 0x01 /* Write In Progress (WIP) flag */
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#define Dummy_Byte 0xA5
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/* Private macro -------------------------------------------------------------*/
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/* Private variables ---------------------------------------------------------*/
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/* Private function prototypes -----------------------------------------------*/
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/* Private functions ---------------------------------------------------------*/
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/*******************************************************************************
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* Function Name : SPI_FLASH_Init
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* Description : Initializes the peripherals used by the SPI FLASH driver.
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|
* Input : None
|
||||||
|
* Output : None
|
||||||
|
* Return : None
|
||||||
|
*******************************************************************************/
|
||||||
|
void SPI_FLASH_Init(void)
|
||||||
|
{
|
||||||
|
SPI_InitTypeDef SPI_InitStructure;
|
||||||
|
GPIO_InitTypeDef GPIO_InitStructure;
|
||||||
|
|
||||||
|
/* Enable SPI1 and GPIO clocks */
|
||||||
|
RCC_APB2PeriphClockCmd(RCC_APB2Periph_SPI1 | RCC_APB2Periph_GPIOA |
|
||||||
|
RCC_APB2Periph_GPIO_CS, ENABLE);
|
||||||
|
|
||||||
|
/* Configure SPI1 pins: SCK, MISO and MOSI */
|
||||||
|
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5 | GPIO_Pin_6 | GPIO_Pin_7;
|
||||||
|
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
|
||||||
|
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
|
||||||
|
GPIO_Init(GPIOA, &GPIO_InitStructure);
|
||||||
|
|
||||||
|
/* Configure I/O for Flash Chip select */
|
||||||
|
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_CS;
|
||||||
|
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
|
||||||
|
GPIO_Init(GPIO_CS, &GPIO_InitStructure);
|
||||||
|
|
||||||
|
/* Deselect the FLASH: Chip Select high */
|
||||||
|
SPI_FLASH_CS_HIGH();
|
||||||
|
|
||||||
|
/* SPI1 configuration */
|
||||||
|
SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
|
||||||
|
SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
|
||||||
|
SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;
|
||||||
|
SPI_InitStructure.SPI_CPOL = SPI_CPOL_High;
|
||||||
|
SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge;
|
||||||
|
SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
|
||||||
|
SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_4;
|
||||||
|
SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
|
||||||
|
SPI_InitStructure.SPI_CRCPolynomial = 7;
|
||||||
|
SPI_Init(SPI1, &SPI_InitStructure);
|
||||||
|
|
||||||
|
/* Enable SPI1 */
|
||||||
|
SPI_Cmd(SPI1, ENABLE);
|
||||||
|
}
|
||||||
|
|
||||||
|
/*******************************************************************************
|
||||||
|
* Function Name : SPI_FLASH_SectorErase
|
||||||
|
* Description : Erases the specified FLASH sector.
|
||||||
|
* Input : SectorAddr: address of the sector to erase.
|
||||||
|
* Output : None
|
||||||
|
* Return : None
|
||||||
|
*******************************************************************************/
|
||||||
|
void SPI_FLASH_SectorErase(uint32_t SectorAddr)
|
||||||
|
{
|
||||||
|
/* Send write enable instruction */
|
||||||
|
SPI_FLASH_WriteEnable();
|
||||||
|
|
||||||
|
/* Sector Erase */
|
||||||
|
/* Select the FLASH: Chip Select low */
|
||||||
|
SPI_FLASH_CS_LOW();
|
||||||
|
/* Send Sector Erase instruction */
|
||||||
|
SPI_FLASH_SendByte(SE);
|
||||||
|
/* Send SectorAddr high nibble address byte */
|
||||||
|
SPI_FLASH_SendByte((SectorAddr & 0xFF0000) >> 16);
|
||||||
|
/* Send SectorAddr medium nibble address byte */
|
||||||
|
SPI_FLASH_SendByte((SectorAddr & 0xFF00) >> 8);
|
||||||
|
/* Send SectorAddr low nibble address byte */
|
||||||
|
SPI_FLASH_SendByte(SectorAddr & 0xFF);
|
||||||
|
/* Deselect the FLASH: Chip Select high */
|
||||||
|
SPI_FLASH_CS_HIGH();
|
||||||
|
|
||||||
|
/* Wait the end of Flash writing */
|
||||||
|
SPI_FLASH_WaitForWriteEnd();
|
||||||
|
}
|
||||||
|
|
||||||
|
/*******************************************************************************
|
||||||
|
* Function Name : SPI_FLASH_BulkErase
|
||||||
|
* Description : Erases the entire FLASH.
|
||||||
|
* Input : None
|
||||||
|
* Output : None
|
||||||
|
* Return : None
|
||||||
|
*******************************************************************************/
|
||||||
|
void SPI_FLASH_BulkErase(void)
|
||||||
|
{
|
||||||
|
/* Send write enable instruction */
|
||||||
|
SPI_FLASH_WriteEnable();
|
||||||
|
|
||||||
|
/* Bulk Erase */
|
||||||
|
/* Select the FLASH: Chip Select low */
|
||||||
|
SPI_FLASH_CS_LOW();
|
||||||
|
/* Send Bulk Erase instruction */
|
||||||
|
SPI_FLASH_SendByte(BE);
|
||||||
|
/* Deselect the FLASH: Chip Select high */
|
||||||
|
SPI_FLASH_CS_HIGH();
|
||||||
|
|
||||||
|
/* Wait the end of Flash writing */
|
||||||
|
SPI_FLASH_WaitForWriteEnd();
|
||||||
|
}
|
||||||
|
|
||||||
|
/*******************************************************************************
|
||||||
|
* Function Name : SPI_FLASH_PageWrite
|
||||||
|
* Description : Writes more than one byte to the FLASH with a single WRITE
|
||||||
|
* cycle(Page WRITE sequence). The number of byte can't exceed
|
||||||
|
* the FLASH page size.
|
||||||
|
* Input : - pBuffer : pointer to the buffer containing the data to be
|
||||||
|
* written to the FLASH.
|
||||||
|
* - WriteAddr : FLASH's internal address to write to.
|
||||||
|
* - NumByteToWrite : number of bytes to write to the FLASH,
|
||||||
|
* must be equal or less than "SPI_FLASH_PageSize" value.
|
||||||
|
* Output : None
|
||||||
|
* Return : None
|
||||||
|
*******************************************************************************/
|
||||||
|
void SPI_FLASH_PageWrite(uint8_t* pBuffer, uint32_t WriteAddr, uint16_t NumByteToWrite)
|
||||||
|
{
|
||||||
|
/* Enable the write access to the FLASH */
|
||||||
|
SPI_FLASH_WriteEnable();
|
||||||
|
|
||||||
|
/* Select the FLASH: Chip Select low */
|
||||||
|
SPI_FLASH_CS_LOW();
|
||||||
|
/* Send "Write to Memory " instruction */
|
||||||
|
SPI_FLASH_SendByte(WRITE);
|
||||||
|
/* Send WriteAddr high nibble address byte to write to */
|
||||||
|
SPI_FLASH_SendByte((WriteAddr & 0xFF0000) >> 16);
|
||||||
|
/* Send WriteAddr medium nibble address byte to write to */
|
||||||
|
SPI_FLASH_SendByte((WriteAddr & 0xFF00) >> 8);
|
||||||
|
/* Send WriteAddr low nibble address byte to write to */
|
||||||
|
SPI_FLASH_SendByte(WriteAddr & 0xFF);
|
||||||
|
|
||||||
|
/* while there is data to be written on the FLASH */
|
||||||
|
while (NumByteToWrite--)
|
||||||
|
{
|
||||||
|
/* Send the current byte */
|
||||||
|
SPI_FLASH_SendByte(*pBuffer);
|
||||||
|
/* Point on the next byte to be written */
|
||||||
|
pBuffer++;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Deselect the FLASH: Chip Select high */
|
||||||
|
SPI_FLASH_CS_HIGH();
|
||||||
|
|
||||||
|
/* Wait the end of Flash writing */
|
||||||
|
SPI_FLASH_WaitForWriteEnd();
|
||||||
|
}
|
||||||
|
|
||||||
|
/*******************************************************************************
|
||||||
|
* Function Name : SPI_FLASH_BufferWrite
|
||||||
|
* Description : Writes block of data to the FLASH. In this function, the
|
||||||
|
* number of WRITE cycles are reduced, using Page WRITE sequence.
|
||||||
|
* Input : - pBuffer : pointer to the buffer containing the data to be
|
||||||
|
* written to the FLASH.
|
||||||
|
* - WriteAddr : FLASH's internal address to write to.
|
||||||
|
* - NumByteToWrite : number of bytes to write to the FLASH.
|
||||||
|
* Output : None
|
||||||
|
* Return : None
|
||||||
|
*******************************************************************************/
|
||||||
|
void SPI_FLASH_BufferWrite(uint8_t* pBuffer, uint32_t WriteAddr, uint16_t NumByteToWrite)
|
||||||
|
{
|
||||||
|
uint8_t NumOfPage = 0, NumOfSingle = 0, Addr = 0, count = 0, temp = 0;
|
||||||
|
|
||||||
|
Addr = WriteAddr % SPI_FLASH_PageSize;
|
||||||
|
count = SPI_FLASH_PageSize - Addr;
|
||||||
|
NumOfPage = NumByteToWrite / SPI_FLASH_PageSize;
|
||||||
|
NumOfSingle = NumByteToWrite % SPI_FLASH_PageSize;
|
||||||
|
|
||||||
|
if (Addr == 0) /* WriteAddr is SPI_FLASH_PageSize aligned */
|
||||||
|
{
|
||||||
|
if (NumOfPage == 0) /* NumByteToWrite < SPI_FLASH_PageSize */
|
||||||
|
{
|
||||||
|
SPI_FLASH_PageWrite(pBuffer, WriteAddr, NumByteToWrite);
|
||||||
|
}
|
||||||
|
else /* NumByteToWrite > SPI_FLASH_PageSize */
|
||||||
|
{
|
||||||
|
while (NumOfPage--)
|
||||||
|
{
|
||||||
|
SPI_FLASH_PageWrite(pBuffer, WriteAddr, SPI_FLASH_PageSize);
|
||||||
|
WriteAddr += SPI_FLASH_PageSize;
|
||||||
|
pBuffer += SPI_FLASH_PageSize;
|
||||||
|
}
|
||||||
|
|
||||||
|
SPI_FLASH_PageWrite(pBuffer, WriteAddr, NumOfSingle);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
else /* WriteAddr is not SPI_FLASH_PageSize aligned */
|
||||||
|
{
|
||||||
|
if (NumOfPage == 0) /* NumByteToWrite < SPI_FLASH_PageSize */
|
||||||
|
{
|
||||||
|
if (NumOfSingle > count) /* (NumByteToWrite + WriteAddr) > SPI_FLASH_PageSize */
|
||||||
|
{
|
||||||
|
temp = NumOfSingle - count;
|
||||||
|
|
||||||
|
SPI_FLASH_PageWrite(pBuffer, WriteAddr, count);
|
||||||
|
WriteAddr += count;
|
||||||
|
pBuffer += count;
|
||||||
|
|
||||||
|
SPI_FLASH_PageWrite(pBuffer, WriteAddr, temp);
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
SPI_FLASH_PageWrite(pBuffer, WriteAddr, NumByteToWrite);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
else /* NumByteToWrite > SPI_FLASH_PageSize */
|
||||||
|
{
|
||||||
|
NumByteToWrite -= count;
|
||||||
|
NumOfPage = NumByteToWrite / SPI_FLASH_PageSize;
|
||||||
|
NumOfSingle = NumByteToWrite % SPI_FLASH_PageSize;
|
||||||
|
|
||||||
|
SPI_FLASH_PageWrite(pBuffer, WriteAddr, count);
|
||||||
|
WriteAddr += count;
|
||||||
|
pBuffer += count;
|
||||||
|
|
||||||
|
while (NumOfPage--)
|
||||||
|
{
|
||||||
|
SPI_FLASH_PageWrite(pBuffer, WriteAddr, SPI_FLASH_PageSize);
|
||||||
|
WriteAddr += SPI_FLASH_PageSize;
|
||||||
|
pBuffer += SPI_FLASH_PageSize;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (NumOfSingle != 0)
|
||||||
|
{
|
||||||
|
SPI_FLASH_PageWrite(pBuffer, WriteAddr, NumOfSingle);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
/*******************************************************************************
|
||||||
|
* Function Name : SPI_FLASH_BufferRead
|
||||||
|
* Description : Reads a block of data from the FLASH.
|
||||||
|
* Input : - pBuffer : pointer to the buffer that receives the data read
|
||||||
|
* from the FLASH.
|
||||||
|
* - ReadAddr : FLASH's internal address to read from.
|
||||||
|
* - NumByteToRead : number of bytes to read from the FLASH.
|
||||||
|
* Output : None
|
||||||
|
* Return : None
|
||||||
|
*******************************************************************************/
|
||||||
|
void SPI_FLASH_BufferRead(uint8_t* pBuffer, uint32_t ReadAddr, uint16_t NumByteToRead)
|
||||||
|
{
|
||||||
|
/* Select the FLASH: Chip Select low */
|
||||||
|
SPI_FLASH_CS_LOW();
|
||||||
|
|
||||||
|
/* Send "Read from Memory " instruction */
|
||||||
|
SPI_FLASH_SendByte(READ);
|
||||||
|
|
||||||
|
/* Send ReadAddr high nibble address byte to read from */
|
||||||
|
SPI_FLASH_SendByte((ReadAddr & 0xFF0000) >> 16);
|
||||||
|
/* Send ReadAddr medium nibble address byte to read from */
|
||||||
|
SPI_FLASH_SendByte((ReadAddr& 0xFF00) >> 8);
|
||||||
|
/* Send ReadAddr low nibble address byte to read from */
|
||||||
|
SPI_FLASH_SendByte(ReadAddr & 0xFF);
|
||||||
|
|
||||||
|
while (NumByteToRead--) /* while there is data to be read */
|
||||||
|
{
|
||||||
|
/* Read a byte from the FLASH */
|
||||||
|
*pBuffer = SPI_FLASH_SendByte(Dummy_Byte);
|
||||||
|
/* Point to the next location where the byte read will be saved */
|
||||||
|
pBuffer++;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Deselect the FLASH: Chip Select high */
|
||||||
|
SPI_FLASH_CS_HIGH();
|
||||||
|
}
|
||||||
|
|
||||||
|
/*******************************************************************************
|
||||||
|
* Function Name : SPI_FLASH_ReadID
|
||||||
|
* Description : Reads FLASH identification.
|
||||||
|
* Input : None
|
||||||
|
* Output : None
|
||||||
|
* Return : FLASH identification
|
||||||
|
*******************************************************************************/
|
||||||
|
uint32_t SPI_FLASH_ReadID(void)
|
||||||
|
{
|
||||||
|
uint32_t Temp = 0, Temp0 = 0, Temp1 = 0, Temp2 = 0;
|
||||||
|
|
||||||
|
/* Select the FLASH: Chip Select low */
|
||||||
|
SPI_FLASH_CS_LOW();
|
||||||
|
|
||||||
|
/* Send "RDID " instruction */
|
||||||
|
SPI_FLASH_SendByte(0x9F);
|
||||||
|
|
||||||
|
/* Read a byte from the FLASH */
|
||||||
|
Temp0 = SPI_FLASH_SendByte(Dummy_Byte);
|
||||||
|
|
||||||
|
/* Read a byte from the FLASH */
|
||||||
|
Temp1 = SPI_FLASH_SendByte(Dummy_Byte);
|
||||||
|
|
||||||
|
/* Read a byte from the FLASH */
|
||||||
|
Temp2 = SPI_FLASH_SendByte(Dummy_Byte);
|
||||||
|
|
||||||
|
/* Deselect the FLASH: Chip Select high */
|
||||||
|
SPI_FLASH_CS_HIGH();
|
||||||
|
|
||||||
|
Temp = (Temp0 << 16) | (Temp1 << 8) | Temp2;
|
||||||
|
|
||||||
|
return Temp;
|
||||||
|
}
|
||||||
|
|
||||||
|
/*******************************************************************************
|
||||||
|
* Function Name : SPI_FLASH_StartReadSequence
|
||||||
|
* Description : Initiates a read data byte (READ) sequence from the Flash.
|
||||||
|
* This is done by driving the /CS line low to select the device,
|
||||||
|
* then the READ instruction is transmitted followed by 3 bytes
|
||||||
|
* address. This function exit and keep the /CS line low, so the
|
||||||
|
* Flash still being selected. With this technique the whole
|
||||||
|
* content of the Flash is read with a single READ instruction.
|
||||||
|
* Input : - ReadAddr : FLASH's internal address to read from.
|
||||||
|
* Output : None
|
||||||
|
* Return : None
|
||||||
|
*******************************************************************************/
|
||||||
|
void SPI_FLASH_StartReadSequence(uint32_t ReadAddr)
|
||||||
|
{
|
||||||
|
/* Select the FLASH: Chip Select low */
|
||||||
|
SPI_FLASH_CS_LOW();
|
||||||
|
|
||||||
|
/* Send "Read from Memory " instruction */
|
||||||
|
SPI_FLASH_SendByte(READ);
|
||||||
|
|
||||||
|
/* Send the 24-bit address of the address to read from -----------------------*/
|
||||||
|
/* Send ReadAddr high nibble address byte */
|
||||||
|
SPI_FLASH_SendByte((ReadAddr & 0xFF0000) >> 16);
|
||||||
|
/* Send ReadAddr medium nibble address byte */
|
||||||
|
SPI_FLASH_SendByte((ReadAddr& 0xFF00) >> 8);
|
||||||
|
/* Send ReadAddr low nibble address byte */
|
||||||
|
SPI_FLASH_SendByte(ReadAddr & 0xFF);
|
||||||
|
}
|
||||||
|
|
||||||
|
/*******************************************************************************
|
||||||
|
* Function Name : SPI_FLASH_ReadByte
|
||||||
|
* Description : Reads a byte from the SPI Flash.
|
||||||
|
* This function must be used only if the Start_Read_Sequence
|
||||||
|
* function has been previously called.
|
||||||
|
* Input : None
|
||||||
|
* Output : None
|
||||||
|
* Return : Byte Read from the SPI Flash.
|
||||||
|
*******************************************************************************/
|
||||||
|
uint8_t SPI_FLASH_ReadByte(void)
|
||||||
|
{
|
||||||
|
return (SPI_FLASH_SendByte(Dummy_Byte));
|
||||||
|
}
|
||||||
|
|
||||||
|
/*******************************************************************************
|
||||||
|
* Function Name : SPI_FLASH_SendByte
|
||||||
|
* Description : Sends a byte through the SPI interface and return the byte
|
||||||
|
* received from the SPI bus.
|
||||||
|
* Input : byte : byte to send.
|
||||||
|
* Output : None
|
||||||
|
* Return : The value of the received byte.
|
||||||
|
*******************************************************************************/
|
||||||
|
uint8_t SPI_FLASH_SendByte(uint8_t byte)
|
||||||
|
{
|
||||||
|
/* Loop while DR register in not emplty */
|
||||||
|
while (SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_TXE) == RESET);
|
||||||
|
|
||||||
|
/* Send byte through the SPI1 peripheral */
|
||||||
|
SPI_I2S_SendData(SPI1, byte);
|
||||||
|
|
||||||
|
/* Wait to receive a byte */
|
||||||
|
while (SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_RXNE) == RESET);
|
||||||
|
|
||||||
|
/* Return the byte read from the SPI bus */
|
||||||
|
return SPI_I2S_ReceiveData(SPI1);
|
||||||
|
}
|
||||||
|
|
||||||
|
/*******************************************************************************
|
||||||
|
* Function Name : SPI_FLASH_SendHalfWord
|
||||||
|
* Description : Sends a Half Word through the SPI interface and return the
|
||||||
|
* Half Word received from the SPI bus.
|
||||||
|
* Input : Half Word : Half Word to send.
|
||||||
|
* Output : None
|
||||||
|
* Return : The value of the received Half Word.
|
||||||
|
*******************************************************************************/
|
||||||
|
uint16_t SPI_FLASH_SendHalfWord(uint16_t HalfWord)
|
||||||
|
{
|
||||||
|
/* Loop while DR register in not emplty */
|
||||||
|
while (SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_TXE) == RESET);
|
||||||
|
|
||||||
|
/* Send Half Word through the SPI1 peripheral */
|
||||||
|
SPI_I2S_SendData(SPI1, HalfWord);
|
||||||
|
|
||||||
|
/* Wait to receive a Half Word */
|
||||||
|
while (SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_RXNE) == RESET);
|
||||||
|
|
||||||
|
/* Return the Half Word read from the SPI bus */
|
||||||
|
return SPI_I2S_ReceiveData(SPI1);
|
||||||
|
}
|
||||||
|
|
||||||
|
/*******************************************************************************
|
||||||
|
* Function Name : SPI_FLASH_WriteEnable
|
||||||
|
* Description : Enables the write access to the FLASH.
|
||||||
|
* Input : None
|
||||||
|
* Output : None
|
||||||
|
* Return : None
|
||||||
|
*******************************************************************************/
|
||||||
|
void SPI_FLASH_WriteEnable(void)
|
||||||
|
{
|
||||||
|
/* Select the FLASH: Chip Select low */
|
||||||
|
SPI_FLASH_CS_LOW();
|
||||||
|
|
||||||
|
/* Send "Write Enable" instruction */
|
||||||
|
SPI_FLASH_SendByte(WREN);
|
||||||
|
|
||||||
|
/* Deselect the FLASH: Chip Select high */
|
||||||
|
SPI_FLASH_CS_HIGH();
|
||||||
|
}
|
||||||
|
|
||||||
|
/*******************************************************************************
|
||||||
|
* Function Name : SPI_FLASH_WaitForWriteEnd
|
||||||
|
* Description : Polls the status of the Write In Progress (WIP) flag in the
|
||||||
|
* FLASH's status register and loop until write opertaion
|
||||||
|
* has completed.
|
||||||
|
* Input : None
|
||||||
|
* Output : None
|
||||||
|
* Return : None
|
||||||
|
*******************************************************************************/
|
||||||
|
void SPI_FLASH_WaitForWriteEnd(void)
|
||||||
|
{
|
||||||
|
uint8_t FLASH_Status = 0;
|
||||||
|
|
||||||
|
/* Select the FLASH: Chip Select low */
|
||||||
|
SPI_FLASH_CS_LOW();
|
||||||
|
|
||||||
|
/* Send "Read Status Register" instruction */
|
||||||
|
SPI_FLASH_SendByte(RDSR);
|
||||||
|
|
||||||
|
/* Loop as long as the memory is busy with a write cycle */
|
||||||
|
do
|
||||||
|
{
|
||||||
|
/* Send a dummy byte to generate the clock needed by the FLASH
|
||||||
|
and put the value of the status register in FLASH_Status variable */
|
||||||
|
FLASH_Status = SPI_FLASH_SendByte(Dummy_Byte);
|
||||||
|
|
||||||
|
}
|
||||||
|
while ((FLASH_Status & WIP_Flag) == SET); /* Write in progress */
|
||||||
|
|
||||||
|
/* Deselect the FLASH: Chip Select high */
|
||||||
|
SPI_FLASH_CS_HIGH();
|
||||||
|
}
|
||||||
|
|
||||||
|
/******************* (C) COPYRIGHT 2009 STMicroelectronics *****END OF FILE****/
|
||||||
@ -0,0 +1,289 @@
|
|||||||
|
/*
|
||||||
|
FreeRTOS V6.0.5 - Copyright (C) 2010 Real Time Engineers Ltd.
|
||||||
|
|
||||||
|
***************************************************************************
|
||||||
|
* *
|
||||||
|
* If you are: *
|
||||||
|
* *
|
||||||
|
* + New to FreeRTOS, *
|
||||||
|
* + Wanting to learn FreeRTOS or multitasking in general quickly *
|
||||||
|
* + Looking for basic training, *
|
||||||
|
* + Wanting to improve your FreeRTOS skills and productivity *
|
||||||
|
* *
|
||||||
|
* then take a look at the FreeRTOS eBook *
|
||||||
|
* *
|
||||||
|
* "Using the FreeRTOS Real Time Kernel - a Practical Guide" *
|
||||||
|
* http://www.FreeRTOS.org/Documentation *
|
||||||
|
* *
|
||||||
|
* A pdf reference manual is also available. Both are usually delivered *
|
||||||
|
* to your inbox within 20 minutes to two hours when purchased between 8am *
|
||||||
|
* and 8pm GMT (although please allow up to 24 hours in case of *
|
||||||
|
* exceptional circumstances). Thank you for your support! *
|
||||||
|
* *
|
||||||
|
***************************************************************************
|
||||||
|
|
||||||
|
This file is part of the FreeRTOS distribution.
|
||||||
|
|
||||||
|
FreeRTOS is free software; you can redistribute it and/or modify it under
|
||||||
|
the terms of the GNU General Public License (version 2) as published by the
|
||||||
|
Free Software Foundation AND MODIFIED BY the FreeRTOS exception.
|
||||||
|
***NOTE*** The exception to the GPL is included to allow you to distribute
|
||||||
|
a combined work that includes FreeRTOS without being obliged to provide the
|
||||||
|
source code for proprietary components outside of the FreeRTOS kernel.
|
||||||
|
FreeRTOS is distributed in the hope that it will be useful, but WITHOUT
|
||||||
|
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
||||||
|
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
||||||
|
more details. You should have received a copy of the GNU General Public
|
||||||
|
License and the FreeRTOS license exception along with FreeRTOS; if not it
|
||||||
|
can be viewed here: http://www.freertos.org/a00114.html and also obtained
|
||||||
|
by writing to Richard Barry, contact details for whom are available on the
|
||||||
|
FreeRTOS WEB site.
|
||||||
|
|
||||||
|
1 tab == 4 spaces!
|
||||||
|
|
||||||
|
http://www.FreeRTOS.org - Documentation, latest information, license and
|
||||||
|
contact details.
|
||||||
|
|
||||||
|
http://www.SafeRTOS.com - A version that is certified for use in safety
|
||||||
|
critical systems.
|
||||||
|
|
||||||
|
http://www.OpenRTOS.com - Commercial support, development, porting,
|
||||||
|
licensing and training services.
|
||||||
|
*/
|
||||||
|
|
||||||
|
/*
|
||||||
|
INTERRUPT DRIVEN SERIAL PORT DRIVER.
|
||||||
|
*/
|
||||||
|
|
||||||
|
|
||||||
|
/******************************************************************************
|
||||||
|
*** NOTE: COM0 == USART1, COM1 == USART2
|
||||||
|
******************************************************************************/
|
||||||
|
|
||||||
|
|
||||||
|
/* Scheduler includes. */
|
||||||
|
#include "FreeRTOS.h"
|
||||||
|
#include "queue.h"
|
||||||
|
#include "semphr.h"
|
||||||
|
|
||||||
|
/* Driver includes. */
|
||||||
|
#include "CircularBuffer.h"
|
||||||
|
|
||||||
|
/* Library includes. */
|
||||||
|
#include "stm32f10x_lib.h"
|
||||||
|
#include "stm32f10x_rcc.h"
|
||||||
|
|
||||||
|
/* Driver includes. */
|
||||||
|
#include "STM32_USART.h"
|
||||||
|
/*-----------------------------------------------------------*/
|
||||||
|
|
||||||
|
/* The number of COM ports that can be controlled at the same time. */
|
||||||
|
#define serNUM_COM_PORTS ( 2 )
|
||||||
|
|
||||||
|
/* Indexes into the xCOMBufferDefinitions array for the Rx and Tx buffers. */
|
||||||
|
#define serRX_BUFFER_INDEX ( 0 )
|
||||||
|
#define serTX_BUFFER_INDEX ( 1 )
|
||||||
|
|
||||||
|
/* A counting semaphore is used to allows tasks to block to wait for characters
|
||||||
|
to be received. This constant defines the max count. Making this value higher
|
||||||
|
does not change the amount of RAM used by the semaphore, so its worth making it
|
||||||
|
quite high. */
|
||||||
|
#define serSEMAPHORE_MAX_COUNT ( 100 )
|
||||||
|
|
||||||
|
/*-----------------------------------------------------------*/
|
||||||
|
|
||||||
|
/* An Rx and a Tx buffer structure for each COM port. */
|
||||||
|
static xCircularBuffer xCOMBufferDefinitions[ serNUM_COM_PORTS ][ 2 ];
|
||||||
|
|
||||||
|
/* The buffers themselves. */
|
||||||
|
static unsigned char ucCOM0_Rx_Buffer[ configCOM0_RX_BUFFER_LENGTH ];
|
||||||
|
static unsigned char ucCOM0_Tx_Buffer[ configCOM0_TX_BUFFER_LENGTH ];
|
||||||
|
static unsigned char ucCOM1_Rx_Buffer[ configCOM1_RX_BUFFER_LENGTH ];
|
||||||
|
static unsigned char ucCOM1_Tx_Buffer[ configCOM1_TX_BUFFER_LENGTH ];
|
||||||
|
|
||||||
|
/* Semaphores used to block tasks that are waiting for characters to be
|
||||||
|
received. */
|
||||||
|
static xSemaphoreHandle xCOM0RxSemaphore, xCOM1RxSemaphore;
|
||||||
|
|
||||||
|
/*-----------------------------------------------------------*/
|
||||||
|
|
||||||
|
/* UART interrupt handler. */
|
||||||
|
void vUARTInterruptHandler( void );
|
||||||
|
|
||||||
|
/*-----------------------------------------------------------*/
|
||||||
|
|
||||||
|
/*
|
||||||
|
* See serial.h in this project for parameter descriptions.
|
||||||
|
*/
|
||||||
|
long lCOMPortInit( unsigned long ulPort, unsigned long ulWantedBaud )
|
||||||
|
{
|
||||||
|
long lReturn = pdFAIL;
|
||||||
|
USART_InitTypeDef USART_InitStructure;
|
||||||
|
NVIC_InitTypeDef NVIC_InitStructure;
|
||||||
|
GPIO_InitTypeDef GPIO_InitStructure;
|
||||||
|
|
||||||
|
if( ulPort < serNUM_COM_PORTS )
|
||||||
|
{
|
||||||
|
/* The common (not port dependent) part of the initialisation. */
|
||||||
|
USART_InitStructure.USART_BaudRate = ulWantedBaud;
|
||||||
|
USART_InitStructure.USART_WordLength = USART_WordLength_8b;
|
||||||
|
USART_InitStructure.USART_StopBits = USART_StopBits_1;
|
||||||
|
USART_InitStructure.USART_Parity = USART_Parity_No;
|
||||||
|
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
|
||||||
|
USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
|
||||||
|
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = configLIBRARY_KERNEL_INTERRUPT_PRIORITY;
|
||||||
|
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
|
||||||
|
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
|
||||||
|
|
||||||
|
|
||||||
|
/* Init the buffer structures with the buffer for the COM port being
|
||||||
|
initialised, and perform any non-common initialisation necessary. This
|
||||||
|
does not check to see if the COM port has already been initialised. */
|
||||||
|
if( ulPort == 0 )
|
||||||
|
{
|
||||||
|
/* Create the semaphore used to enable tasks to block to wait for
|
||||||
|
characters to be received. */
|
||||||
|
xCOM0RxSemaphore = xSemaphoreCreateCounting( serSEMAPHORE_MAX_COUNT, 0 );
|
||||||
|
|
||||||
|
vInitialiseCircularBuffer( &( xCOMBufferDefinitions[ ulPort ][ serRX_BUFFER_INDEX ] ),
|
||||||
|
ucCOM0_Rx_Buffer,
|
||||||
|
configCOM0_RX_BUFFER_LENGTH,
|
||||||
|
sizeof( unsigned char ),
|
||||||
|
NULL
|
||||||
|
);
|
||||||
|
|
||||||
|
vInitialiseCircularBuffer( &( xCOMBufferDefinitions[ ulPort ][ serTX_BUFFER_INDEX ] ),
|
||||||
|
ucCOM0_Tx_Buffer,
|
||||||
|
configCOM0_TX_BUFFER_LENGTH,
|
||||||
|
sizeof( unsigned char ),
|
||||||
|
NULL
|
||||||
|
);
|
||||||
|
|
||||||
|
/* Enable COM1 clock - the ST libraries start numbering from UART1,
|
||||||
|
making this UART 2. */
|
||||||
|
RCC_APB2PeriphClockCmd( RCC_APB2Periph_USART1 | RCC_APB2Periph_GPIOA, ENABLE );
|
||||||
|
|
||||||
|
/* Configure USART1 Rx (PA10) as input floating */
|
||||||
|
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
|
||||||
|
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
|
||||||
|
GPIO_Init( GPIOA, &GPIO_InitStructure );
|
||||||
|
|
||||||
|
/* Configure USART1 Tx (PA9) as alternate function push-pull */
|
||||||
|
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
|
||||||
|
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
|
||||||
|
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
|
||||||
|
GPIO_Init( GPIOA, &GPIO_InitStructure );
|
||||||
|
|
||||||
|
USART_Init( USART1, &USART_InitStructure );
|
||||||
|
USART_ITConfig( USART1, USART_IT_RXNE, ENABLE );
|
||||||
|
|
||||||
|
NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQChannel;
|
||||||
|
NVIC_Init( &NVIC_InitStructure );
|
||||||
|
|
||||||
|
USART_DMACmd( USART1, ( USART_DMAReq_Tx | USART_DMAReq_Rx ), ENABLE );
|
||||||
|
USART_Cmd( USART1, ENABLE );
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
/* Create the semaphore used to enable tasks to block to wait for
|
||||||
|
characters to be received. */
|
||||||
|
xCOM1RxSemaphore = xSemaphoreCreateCounting( serSEMAPHORE_MAX_COUNT, 0 );
|
||||||
|
|
||||||
|
vInitialiseCircularBuffer( &( xCOMBufferDefinitions[ ulPort ][ serRX_BUFFER_INDEX ] ),
|
||||||
|
ucCOM1_Rx_Buffer,
|
||||||
|
configCOM1_RX_BUFFER_LENGTH,
|
||||||
|
sizeof( unsigned char ),
|
||||||
|
NULL
|
||||||
|
);
|
||||||
|
|
||||||
|
vInitialiseCircularBuffer( &( xCOMBufferDefinitions[ ulPort ][ serTX_BUFFER_INDEX ] ),
|
||||||
|
ucCOM1_Tx_Buffer,
|
||||||
|
configCOM1_TX_BUFFER_LENGTH,
|
||||||
|
sizeof( unsigned char ),
|
||||||
|
NULL
|
||||||
|
);
|
||||||
|
|
||||||
|
/* Enable COM0 clock - the ST libraries start numbering from 1. */
|
||||||
|
RCC_APB2PeriphClockCmd( RCC_APB1Periph_USART2 | RCC_APB2Periph_GPIOA, ENABLE );
|
||||||
|
|
||||||
|
/* Configure USART2 Rx (PA3) as input floating */
|
||||||
|
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3;
|
||||||
|
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
|
||||||
|
GPIO_Init( GPIOA, &GPIO_InitStructure );
|
||||||
|
|
||||||
|
/* Configure USART2 Tx (PA2) as alternate function push-pull */
|
||||||
|
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
|
||||||
|
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
|
||||||
|
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
|
||||||
|
GPIO_Init( GPIOA, &GPIO_InitStructure );
|
||||||
|
|
||||||
|
USART_Init( USART2, &USART_InitStructure );
|
||||||
|
USART_ITConfig( USART2, USART_IT_RXNE, ENABLE );
|
||||||
|
|
||||||
|
NVIC_InitStructure.NVIC_IRQChannel = USART2_IRQChannel;
|
||||||
|
NVIC_Init( &NVIC_InitStructure );
|
||||||
|
|
||||||
|
USART_DMACmd( USART2, ( USART_DMAReq_Tx | USART_DMAReq_Rx ), ENABLE );
|
||||||
|
USART_Cmd( USART2, ENABLE );
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Everything is ok. */
|
||||||
|
lReturn = pdPASS;
|
||||||
|
}
|
||||||
|
|
||||||
|
return lReturn;
|
||||||
|
}
|
||||||
|
/*-----------------------------------------------------------*/
|
||||||
|
|
||||||
|
signed long xUSARTGetChar( long lPort, signed char *pcRxedChar, portTickType xBlockTime )
|
||||||
|
{
|
||||||
|
return pdFALSE;
|
||||||
|
}
|
||||||
|
/*-----------------------------------------------------------*/
|
||||||
|
|
||||||
|
void vSerialPutString( long lPort, const signed char * const pcString, unsigned portSHORT usStringLength )
|
||||||
|
{
|
||||||
|
}
|
||||||
|
/*-----------------------------------------------------------*/
|
||||||
|
|
||||||
|
signed long xSerialPutChar( long lPort, signed char cOutChar, portTickType xBlockTime )
|
||||||
|
{
|
||||||
|
return pdFALSE;
|
||||||
|
}
|
||||||
|
/*-----------------------------------------------------------*/
|
||||||
|
|
||||||
|
void vUARTInterruptHandler( void )
|
||||||
|
{
|
||||||
|
long xHigherPriorityTaskWoken = pdFALSE;
|
||||||
|
char cChar;
|
||||||
|
|
||||||
|
if( USART_GetITStatus( USART1, USART_IT_TXE ) == SET )
|
||||||
|
{
|
||||||
|
/* The interrupt was caused by the THR becoming empty. Are there any
|
||||||
|
more characters to transmit? */
|
||||||
|
if( 0 )// if( xQueueReceiveFromISR( xCharsForTx, &cChar, &xHigherPriorityTaskWoken ) == pdTRUE )
|
||||||
|
{
|
||||||
|
/* A character was retrieved from the queue so can be sent to the
|
||||||
|
THR now. */
|
||||||
|
USART_SendData( USART1, cChar );
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
USART_ITConfig( USART1, USART_IT_TXE, DISABLE );
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
if( USART_GetITStatus( USART1, USART_IT_RXNE ) == SET )
|
||||||
|
{
|
||||||
|
cChar = USART_ReceiveData( USART1 );
|
||||||
|
// xQueueSendFromISR( xRxedChars, &cChar, &xHigherPriorityTaskWoken );
|
||||||
|
}
|
||||||
|
|
||||||
|
portEND_SWITCHING_ISR( xHigherPriorityTaskWoken );
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
@ -0,0 +1,60 @@
|
|||||||
|
/*
|
||||||
|
FreeRTOS V6.0.5 - Copyright (C) 2010 Real Time Engineers Ltd.
|
||||||
|
|
||||||
|
***************************************************************************
|
||||||
|
* *
|
||||||
|
* If you are: *
|
||||||
|
* *
|
||||||
|
* + New to FreeRTOS, *
|
||||||
|
* + Wanting to learn FreeRTOS or multitasking in general quickly *
|
||||||
|
* + Looking for basic training, *
|
||||||
|
* + Wanting to improve your FreeRTOS skills and productivity *
|
||||||
|
* *
|
||||||
|
* then take a look at the FreeRTOS eBook *
|
||||||
|
* *
|
||||||
|
* "Using the FreeRTOS Real Time Kernel - a Practical Guide" *
|
||||||
|
* http://www.FreeRTOS.org/Documentation *
|
||||||
|
* *
|
||||||
|
* A pdf reference manual is also available. Both are usually delivered *
|
||||||
|
* to your inbox within 20 minutes to two hours when purchased between 8am *
|
||||||
|
* and 8pm GMT (although please allow up to 24 hours in case of *
|
||||||
|
* exceptional circumstances). Thank you for your support! *
|
||||||
|
* *
|
||||||
|
***************************************************************************
|
||||||
|
|
||||||
|
This file is part of the FreeRTOS distribution.
|
||||||
|
|
||||||
|
FreeRTOS is free software; you can redistribute it and/or modify it under
|
||||||
|
the terms of the GNU General Public License (version 2) as published by the
|
||||||
|
Free Software Foundation AND MODIFIED BY the FreeRTOS exception.
|
||||||
|
***NOTE*** The exception to the GPL is included to allow you to distribute
|
||||||
|
a combined work that includes FreeRTOS without being obliged to provide the
|
||||||
|
source code for proprietary components outside of the FreeRTOS kernel.
|
||||||
|
FreeRTOS is distributed in the hope that it will be useful, but WITHOUT
|
||||||
|
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
||||||
|
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
||||||
|
more details. You should have received a copy of the GNU General Public
|
||||||
|
License and the FreeRTOS license exception along with FreeRTOS; if not it
|
||||||
|
can be viewed here: http://www.freertos.org/a00114.html and also obtained
|
||||||
|
by writing to Richard Barry, contact details for whom are available on the
|
||||||
|
FreeRTOS WEB site.
|
||||||
|
|
||||||
|
1 tab == 4 spaces!
|
||||||
|
|
||||||
|
http://www.FreeRTOS.org - Documentation, latest information, license and
|
||||||
|
contact details.
|
||||||
|
|
||||||
|
http://www.SafeRTOS.com - A version that is certified for use in safety
|
||||||
|
critical systems.
|
||||||
|
|
||||||
|
http://www.OpenRTOS.com - Commercial support, development, porting,
|
||||||
|
licensing and training services.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#ifndef STM_32_SERIAL_COMMS_H
|
||||||
|
#define STM_32_SERIAL_COMMS_H
|
||||||
|
|
||||||
|
long lCOMPortInit( unsigned long ulPort, unsigned long ulWantedBaud );
|
||||||
|
|
||||||
|
#endif
|
||||||
|
|
||||||
@ -0,0 +1 @@
|
|||||||
|
Only include one of the two ParTest source files in your build at any one time.
|
||||||
@ -1,247 +0,0 @@
|
|||||||
/*
|
|
||||||
FreeRTOS V6.0.5 - Copyright (C) 2010 Real Time Engineers Ltd.
|
|
||||||
|
|
||||||
***************************************************************************
|
|
||||||
* *
|
|
||||||
* If you are: *
|
|
||||||
* *
|
|
||||||
* + New to FreeRTOS, *
|
|
||||||
* + Wanting to learn FreeRTOS or multitasking in general quickly *
|
|
||||||
* + Looking for basic training, *
|
|
||||||
* + Wanting to improve your FreeRTOS skills and productivity *
|
|
||||||
* *
|
|
||||||
* then take a look at the FreeRTOS eBook *
|
|
||||||
* *
|
|
||||||
* "Using the FreeRTOS Real Time Kernel - a Practical Guide" *
|
|
||||||
* http://www.FreeRTOS.org/Documentation *
|
|
||||||
* *
|
|
||||||
* A pdf reference manual is also available. Both are usually delivered *
|
|
||||||
* to your inbox within 20 minutes to two hours when purchased between 8am *
|
|
||||||
* and 8pm GMT (although please allow up to 24 hours in case of *
|
|
||||||
* exceptional circumstances). Thank you for your support! *
|
|
||||||
* *
|
|
||||||
***************************************************************************
|
|
||||||
|
|
||||||
This file is part of the FreeRTOS distribution.
|
|
||||||
|
|
||||||
FreeRTOS is free software; you can redistribute it and/or modify it under
|
|
||||||
the terms of the GNU General Public License (version 2) as published by the
|
|
||||||
Free Software Foundation AND MODIFIED BY the FreeRTOS exception.
|
|
||||||
***NOTE*** The exception to the GPL is included to allow you to distribute
|
|
||||||
a combined work that includes FreeRTOS without being obliged to provide the
|
|
||||||
source code for proprietary components outside of the FreeRTOS kernel.
|
|
||||||
FreeRTOS is distributed in the hope that it will be useful, but WITHOUT
|
|
||||||
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
||||||
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
|
||||||
more details. You should have received a copy of the GNU General Public
|
|
||||||
License and the FreeRTOS license exception along with FreeRTOS; if not it
|
|
||||||
can be viewed here: http://www.freertos.org/a00114.html and also obtained
|
|
||||||
by writing to Richard Barry, contact details for whom are available on the
|
|
||||||
FreeRTOS WEB site.
|
|
||||||
|
|
||||||
1 tab == 4 spaces!
|
|
||||||
|
|
||||||
http://www.FreeRTOS.org - Documentation, latest information, license and
|
|
||||||
contact details.
|
|
||||||
|
|
||||||
http://www.SafeRTOS.com - A version that is certified for use in safety
|
|
||||||
critical systems.
|
|
||||||
|
|
||||||
http://www.OpenRTOS.com - Commercial support, development, porting,
|
|
||||||
licensing and training services.
|
|
||||||
*/
|
|
||||||
|
|
||||||
/*
|
|
||||||
BASIC INTERRUPT DRIVEN SERIAL PORT DRIVER FOR UART0.
|
|
||||||
*/
|
|
||||||
|
|
||||||
/* Scheduler includes. */
|
|
||||||
#include "FreeRTOS.h"
|
|
||||||
#include "queue.h"
|
|
||||||
#include "semphr.h"
|
|
||||||
|
|
||||||
/* Library includes. */
|
|
||||||
#include "stm32f10x_lib.h"
|
|
||||||
|
|
||||||
/* Demo application includes. */
|
|
||||||
#include "serial.h"
|
|
||||||
/*-----------------------------------------------------------*/
|
|
||||||
|
|
||||||
/* Misc defines. */
|
|
||||||
#define serINVALID_QUEUE ( ( xQueueHandle ) 0 )
|
|
||||||
#define serNO_BLOCK ( ( portTickType ) 0 )
|
|
||||||
#define serTX_BLOCK_TIME ( 40 / portTICK_RATE_MS )
|
|
||||||
|
|
||||||
/*-----------------------------------------------------------*/
|
|
||||||
|
|
||||||
/* The queue used to hold received characters. */
|
|
||||||
static xQueueHandle xRxedChars;
|
|
||||||
static xQueueHandle xCharsForTx;
|
|
||||||
|
|
||||||
/*-----------------------------------------------------------*/
|
|
||||||
|
|
||||||
/* UART interrupt handler. */
|
|
||||||
void vUARTInterruptHandler( void );
|
|
||||||
|
|
||||||
/*-----------------------------------------------------------*/
|
|
||||||
|
|
||||||
/*
|
|
||||||
* See the serial2.h header file.
|
|
||||||
*/
|
|
||||||
xComPortHandle xSerialPortInitMinimal( unsigned portLONG ulWantedBaud, unsigned portBASE_TYPE uxQueueLength )
|
|
||||||
{
|
|
||||||
xComPortHandle xReturn;
|
|
||||||
USART_InitTypeDef USART_InitStructure;
|
|
||||||
NVIC_InitTypeDef NVIC_InitStructure;
|
|
||||||
GPIO_InitTypeDef GPIO_InitStructure;
|
|
||||||
|
|
||||||
/* Create the queues used to hold Rx/Tx characters. */
|
|
||||||
xRxedChars = xQueueCreate( uxQueueLength, ( unsigned portBASE_TYPE ) sizeof( signed portCHAR ) );
|
|
||||||
xCharsForTx = xQueueCreate( uxQueueLength + 1, ( unsigned portBASE_TYPE ) sizeof( signed portCHAR ) );
|
|
||||||
|
|
||||||
/* If the queue/semaphore was created correctly then setup the serial port
|
|
||||||
hardware. */
|
|
||||||
if( ( xRxedChars != serINVALID_QUEUE ) && ( xCharsForTx != serINVALID_QUEUE ) )
|
|
||||||
{
|
|
||||||
/* Enable USART1 clock */
|
|
||||||
RCC_APB2PeriphClockCmd( RCC_APB2Periph_USART1 | RCC_APB2Periph_GPIOA, ENABLE );
|
|
||||||
|
|
||||||
/* Configure USART1 Rx (PA10) as input floating */
|
|
||||||
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
|
|
||||||
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
|
|
||||||
GPIO_Init( GPIOA, &GPIO_InitStructure );
|
|
||||||
|
|
||||||
/* Configure USART1 Tx (PA9) as alternate function push-pull */
|
|
||||||
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
|
|
||||||
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
|
|
||||||
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
|
|
||||||
GPIO_Init( GPIOA, &GPIO_InitStructure );
|
|
||||||
|
|
||||||
USART_InitStructure.USART_BaudRate = ulWantedBaud;
|
|
||||||
USART_InitStructure.USART_WordLength = USART_WordLength_8b;
|
|
||||||
USART_InitStructure.USART_StopBits = USART_StopBits_1;
|
|
||||||
USART_InitStructure.USART_Parity = USART_Parity_No;
|
|
||||||
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
|
|
||||||
USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
|
|
||||||
|
|
||||||
USART_Init( USART1, &USART_InitStructure );
|
|
||||||
|
|
||||||
USART_ITConfig( USART1, USART_IT_RXNE, ENABLE );
|
|
||||||
|
|
||||||
NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQChannel;
|
|
||||||
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = configLIBRARY_KERNEL_INTERRUPT_PRIORITY;
|
|
||||||
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
|
|
||||||
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
|
|
||||||
NVIC_Init( &NVIC_InitStructure );
|
|
||||||
|
|
||||||
USART_Cmd( USART1, ENABLE );
|
|
||||||
}
|
|
||||||
else
|
|
||||||
{
|
|
||||||
xReturn = ( xComPortHandle ) 0;
|
|
||||||
}
|
|
||||||
|
|
||||||
/* This demo file only supports a single port but we have to return
|
|
||||||
something to comply with the standard demo header file. */
|
|
||||||
return xReturn;
|
|
||||||
}
|
|
||||||
/*-----------------------------------------------------------*/
|
|
||||||
|
|
||||||
signed portBASE_TYPE xSerialGetChar( xComPortHandle pxPort, signed portCHAR *pcRxedChar, portTickType xBlockTime )
|
|
||||||
{
|
|
||||||
/* The port handle is not required as this driver only supports one port. */
|
|
||||||
( void ) pxPort;
|
|
||||||
|
|
||||||
/* Get the next character from the buffer. Return false if no characters
|
|
||||||
are available, or arrive before xBlockTime expires. */
|
|
||||||
if( xQueueReceive( xRxedChars, pcRxedChar, xBlockTime ) )
|
|
||||||
{
|
|
||||||
return pdTRUE;
|
|
||||||
}
|
|
||||||
else
|
|
||||||
{
|
|
||||||
return pdFALSE;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
/*-----------------------------------------------------------*/
|
|
||||||
|
|
||||||
void vSerialPutString( xComPortHandle pxPort, const signed portCHAR * const pcString, unsigned portSHORT usStringLength )
|
|
||||||
{
|
|
||||||
signed portCHAR *pxNext;
|
|
||||||
|
|
||||||
/* A couple of parameters that this port does not use. */
|
|
||||||
( void ) usStringLength;
|
|
||||||
( void ) pxPort;
|
|
||||||
|
|
||||||
/* NOTE: This implementation does not handle the queue being full as no
|
|
||||||
block time is used! */
|
|
||||||
|
|
||||||
/* The port handle is not required as this driver only supports UART1. */
|
|
||||||
( void ) pxPort;
|
|
||||||
|
|
||||||
/* Send each character in the string, one at a time. */
|
|
||||||
pxNext = ( signed portCHAR * ) pcString;
|
|
||||||
while( *pxNext )
|
|
||||||
{
|
|
||||||
xSerialPutChar( pxPort, *pxNext, serNO_BLOCK );
|
|
||||||
pxNext++;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
/*-----------------------------------------------------------*/
|
|
||||||
|
|
||||||
signed portBASE_TYPE xSerialPutChar( xComPortHandle pxPort, signed portCHAR cOutChar, portTickType xBlockTime )
|
|
||||||
{
|
|
||||||
signed portBASE_TYPE xReturn;
|
|
||||||
|
|
||||||
/* Just to remove the compiler warning. */
|
|
||||||
( void ) pxPort;
|
|
||||||
|
|
||||||
if( xQueueSend( xCharsForTx, &cOutChar, xBlockTime ) == pdPASS )
|
|
||||||
{
|
|
||||||
xReturn = pdPASS;
|
|
||||||
USART_ITConfig( USART1, USART_IT_TXE, ENABLE );
|
|
||||||
}
|
|
||||||
else
|
|
||||||
{
|
|
||||||
xReturn = pdFAIL;
|
|
||||||
}
|
|
||||||
|
|
||||||
return xReturn;
|
|
||||||
}
|
|
||||||
/*-----------------------------------------------------------*/
|
|
||||||
|
|
||||||
void vUARTInterruptHandler( void )
|
|
||||||
{
|
|
||||||
portBASE_TYPE xHigherPriorityTaskWoken = pdFALSE;
|
|
||||||
portCHAR cChar;
|
|
||||||
|
|
||||||
if( USART_GetITStatus( USART1, USART_IT_TXE ) == SET )
|
|
||||||
{
|
|
||||||
/* The interrupt was caused by the THR becoming empty. Are there any
|
|
||||||
more characters to transmit? */
|
|
||||||
if( xQueueReceiveFromISR( xCharsForTx, &cChar, &xHigherPriorityTaskWoken ) == pdTRUE )
|
|
||||||
{
|
|
||||||
/* A character was retrieved from the queue so can be sent to the
|
|
||||||
THR now. */
|
|
||||||
USART_SendData( USART1, cChar );
|
|
||||||
}
|
|
||||||
else
|
|
||||||
{
|
|
||||||
USART_ITConfig( USART1, USART_IT_TXE, DISABLE );
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
if( USART_GetITStatus( USART1, USART_IT_RXNE ) == SET )
|
|
||||||
{
|
|
||||||
cChar = USART_ReceiveData( USART1 );
|
|
||||||
xQueueSendFromISR( xRxedChars, &cChar, &xHigherPriorityTaskWoken );
|
|
||||||
}
|
|
||||||
|
|
||||||
portEND_SWITCHING_ISR( xHigherPriorityTaskWoken );
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
Loading…
Reference in New Issue