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Add structure for future DMA support

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@2141 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo 2009-10-16 13:05:01 +00:00
parent b3800e7dea
commit ed8c1e6568
3 changed files with 100 additions and 1 deletions
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2
arch/arm/src/stm32/Make.defs
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@ -46,6 +46,6 @@ CMN_CSRCS = up_allocateheap.c up_assert.c up_blocktask.c up_copystate.c \
CHIP_ASRCS =
CHIP_CSRCS = stm32_start.c stm32_rcc.c stm32_gpio.c stm32_irq.c \
stm32_timerisr.c stm32_lowputc.c stm32_serial.c \
stm32_timerisr.c stm32_dma.c stm32_lowputc.c stm32_serial.c \
stm32_spi.c

84
arch/arm/src/stm32/stm32_dma.c Executable file
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@ -0,0 +1,84 @@
/****************************************************************************
* arch/arm/src/stm32/stm32_dma.c
*
* Copyright (C) 2009 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <debug.h>
#include <arch/irq.h>
#include "up_arch.h"
#include "chip.h"
#include "stm32_dma.h"
#include "stm32_internal.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/****************************************************************************
* Private Types
****************************************************************************/
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Global Functions
****************************************************************************/
/****************************************************************************
* Name: stm32_dmachannel
*
* Description:
* Allocate a DMA channel
*
* Returned Value:
* On success, a void* DMA channel handle; NULL on failure
*
****************************************************************************/
DMA_HANDLE stm32_dmachannel(void)
{
return NULL;
}

15
arch/arm/src/stm32/stm32_internal.h
View File

@ -379,6 +379,8 @@
* Public Types
************************************************************************************/
typedef FAR void *DMA_HANDLE;
/************************************************************************************
* Inline Functions
************************************************************************************/
@ -474,6 +476,19 @@ EXTERN int stm32_dumpgpio(uint32 pinset, const char *msg);
# define stm32_dumpgpio(p,m)
#endif
/****************************************************************************
* Name: stm32_dmachannel
*
* Description:
* Allocate a DMA channel
*
* Returned Value:
* On success, a void* DMA channel handle; NULL on failure
*
****************************************************************************/
EXTERN DMA_HANDLE stm32_dmachannel(void);
/************************************************************************************
* Function: stm32_ethinitialize
*