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Add MTD interface; add M25P64/128 driver

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@2157 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo
2009-10-18 17:45:31 +00:00
parent 9b04ee217e
commit 23683fe846
12 changed files with 1023 additions and 30 deletions
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ChangeLog
+5
View File
@@ -915,3 +915,8 @@
0.4.13 2009-xx-xx Gregory Nutt <spudmonkey@racsa.co.cr>
* include/nuttx/mtd.h. Added a simple interface definition to support some
FLASH, EEPROM, NVRAM, etc. devices.
* driver/mtd/m25px.c. Added a driver for SPI based FLASH parts M25P64 and M25P128.
Documentation/NuttX.html
+5 -1
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@@ -8,7 +8,7 @@
<tr align="center" bgcolor="#e4e4e4">
<td>
<h1><big><font color="#3c34ec"><i>NuttX RTOS</i></font></big></h1>
<p>Last Updated: October 17, 2009</p>
<p>Last Updated: October 18, 2009</p>
</td>
</tr>
</table>
@@ -1567,6 +1567,10 @@ buildroot-0.1.7 2009-06-26 &lt;spudmonkey@racsa.co.cr&gt;
<ul><pre>
nuttx-0.4.13 2009-xx-xx Gregory Nutt &lt;spudmonkey@racsa.co.cr&gt;
* include/nuttx/mtd.h. Added a simple interface definition to support some
FLASH, EEPROM, NVRAM, etc. devices.
* driver/mtd/m25px.c. Added a driver for SPI based FLASH parts M25P64 and M25P128.
pascal-0.1.3 2009-xx-xx Gregory Nutt &lt;spudmonkey@racsa.co.cr&gt;
buildroot-0.1.8 2009-xx-xx &lt;spudmonkey@racsa.co.cr&gt;
arch/arm/src/stm32/stm32_internal.h
+17 -17
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@@ -124,23 +124,23 @@
* .... .... .... .... .... .... .... BBBB
*/
#define GPIO_PIN_SHIFT 0 /* Bits 0-3: GPIO number: 0-15 */
#define GPIO_PIN_MASK (15 << GPIO_PIN_SHIFT)
#define GPIO_PIN1 (1 << GPIO_PIN_SHIFT)
#define GPIO_PIN2 (2 << GPIO_PIN_SHIFT)
#define GPIO_PIN3 (3 << GPIO_PIN_SHIFT)
#define GPIO_PIN4 (4 << GPIO_PIN_SHIFT)
#define GPIO_PIN5 (5 << GPIO_PIN_SHIFT)
#define GPIO_PIN6 (6 << GPIO_PIN_SHIFT)
#define GPIO_PIN7 (7 << GPIO_PIN_SHIFT)
#define GPIO_PIN8 (8 << GPIO_PIN_SHIFT)
#define GPIO_PIN9 (9 << GPIO_PIN_SHIFT)
#define GPIO_PIN10 (10 << GPIO_PIN_SHIFT)
#define GPIO_PIN11 (11 << GPIO_PIN_SHIFT)
#define GPIO_PIN12 (12 << GPIO_PIN_SHIFT)
#define GPIO_PIN13 (13 << GPIO_PIN_SHIFT)
#define GPIO_PIN14 (14 << GPIO_PIN_SHIFT)
#define GPIO_PIN15 (15 << GPIO_PIN_SHIFT)
#define GPIO_PIN_SHIFT 0 /* Bits 0-3: GPIO number: 0-15 */
#define GPIO_PIN_MASK (15 << GPIO_PIN_SHIFT)
#define GPIO_PIN1 (1 << GPIO_PIN_SHIFT)
#define GPIO_PIN2 (2 << GPIO_PIN_SHIFT)
#define GPIO_PIN3 (3 << GPIO_PIN_SHIFT)
#define GPIO_PIN4 (4 << GPIO_PIN_SHIFT)
#define GPIO_PIN5 (5 << GPIO_PIN_SHIFT)
#define GPIO_PIN6 (6 << GPIO_PIN_SHIFT)
#define GPIO_PIN7 (7 << GPIO_PIN_SHIFT)
#define GPIO_PIN8 (8 << GPIO_PIN_SHIFT)
#define GPIO_PIN9 (9 << GPIO_PIN_SHIFT)
#define GPIO_PIN10 (10 << GPIO_PIN_SHIFT)
#define GPIO_PIN11 (11 << GPIO_PIN_SHIFT)
#define GPIO_PIN12 (12 << GPIO_PIN_SHIFT)
#define GPIO_PIN13 (13 << GPIO_PIN_SHIFT)
#define GPIO_PIN14 (14 << GPIO_PIN_SHIFT)
#define GPIO_PIN15 (15 << GPIO_PIN_SHIFT)
/* Alternate Pin Functions: */
configs/stm3210e-eval/src/stm3210e-internal.h
+2 -2
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@@ -72,11 +72,11 @@
/* MMC/SD SPI1 chip select: PC.12 */
#define GPIO_MMCSD_CS (GPIO_OUTPUT|GPIO_CNF_OUTPP|GPIO_MODE_50MHz|GPIO_OUTPUT_CLEAR|GPIO_PORTC|GPIO_PIN12)
#define GPIO_MMCSD_CS (GPIO_OUTPUT|GPIO_CNF_OUTPP|GPIO_MODE_50MHz|GPIO_OUTPUT_SET|GPIO_PORTC|GPIO_PIN12)
/* SPI FLASH chip select: PA.4 */
#define GPIO_FLASH_CS (GPIO_OUTPUT|GPIO_CNF_OUTPP|GPIO_MODE_50MHz|GPIO_OUTPUT_CLEAR|GPIO_PORTA|GPIO_PIN4)
#define GPIO_FLASH_CS (GPIO_OUTPUT|GPIO_CNF_OUTPP|GPIO_MODE_50MHz|GPIO_OUTPUT_SET|GPIO_PORTA|GPIO_PIN4)
/************************************************************************************
* Public Functions
drivers/Makefile
+12 -5
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@@ -78,17 +78,23 @@ CFLAGS += ${shell $(TOPDIR)/tools/incdir.sh $(INCDIROPT) "$(CC)" $(TOPDIR)/driv
endif
endif
ASRCS = $(SERIAL_ASRCS) $(NET_ASRCS) $(PIPE_ASRCS) $(USBDEV_ASRCS) $(MMCSD_ASRCS) $(BCH_ASRCS)
include mtd/Make.defs
ROOTDEPPATH = --dep-path .
MTDDEPPATH = --dep-path mtd
ASRCS = $(SERIAL_ASRCS) $(NET_ASRCS) $(PIPE_ASRCS) $(USBDEV_ASRCS) \
$(MMCSD_ASRCS) $(BCH_ASRCS) $(MTD_ASRCS)
AOBJS = $(ASRCS:.S=$(OBJEXT))
CSRCS =
ifneq ($(CONFIG_NFILE_DESCRIPTORS),0)
CSRCS += dev_null.c dev_zero.c loop.c can.c
ifneq ($(CONFIG_DISABLE_MOUNTPOINT),y)
CSRCS += ramdisk.c
CSRCS += ramdisk.c
endif
endif
CSRCS += $(SERIAL_CSRCS) $(NET_CSRCS) $(PIPE_CSRCS) $(USBDEV_CSRCS) $(MMCSD_CSRCS) $(BCH_CSRCS)
CSRCS += $(SERIAL_CSRCS) $(NET_CSRCS) $(PIPE_CSRCS) $(USBDEV_CSRCS) \
$(MMCSD_CSRCS) $(BCH_CSRCS) $(MTD_CSRCS)
COBJS = $(CSRCS:.c=$(OBJEXT))
SRCS = $(ASRCS) $(CSRCS)
@@ -96,7 +102,7 @@ OBJS = $(AOBJS) $(COBJS)
BIN = libdrivers$(LIBEXT)
VPATH = serial:net:pipes:usbdev:mmcsd:bch
VPATH = serial:net:pipes:usbdev:mmcsd:bch:mtd
all: $(BIN)
@@ -112,7 +118,8 @@ $(BIN): $(OBJS)
done ; )
.depend: Makefile $(SRCS)
@$(MKDEP) $(ROOTDEPPATH) $(SERIALDEPPATH) $(NETDEPPATH) $(PIPEDEPPATH)$(USBDEVDEPPATH) $(MMCSDDEPPATH) $(BCHDEPPATH) \
@$(MKDEP) $(ROOTDEPPATH) $(SERIALDEPPATH) $(NETDEPPATH) $(PIPEDEPPATH) \
$(USBDEVDEPPATH) $(MMCSDDEPPATH) $(BCHDEPPATH) $(MTDDEPPATH) \
$(CC) -- $(CFLAGS) -- $(SRCS) >Make.dep
@touch $@
drivers/README.txt
+10
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@@ -39,6 +39,16 @@ mmcsd/
Support for MMC/SD block drivers. At present, only SPI-based
MMC/SD is supported. See include/nuttx/mmcsd.h.
mtd/
Memory Technology Device (MTD) drivers. Some simple drivers for
memory technologies like FLASH, EEPROM, NVRAM, etc. See
include/nuttx/mtd.h
(Note: This is a simple memory interface and should not be
confused with the "real" MTD developed at infradead.org. This
logic is unrelated; I just used the name MTD because I am not
aware of any other common way to refer to this class of devices).
net/
Network interface drivers. See also include/nuttx/net.h
drivers/mtd/Make.defs
+38
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@@ -0,0 +1,38 @@
############################################################################
# drivers/mtd/Make.defs
#
# 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.
#
############################################################################
MTD_ASRCS =
MTD_CSRCS = m25px.c
drivers/mtd/m25px.c
+562
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File diff suppressed because it is too large Load Diff
drivers/mtd/skeleton.c
+234
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@@ -0,0 +1,234 @@
/****************************************************************************
* drivers/mtd/skeleton.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 <errno.h>
#include <nuttx/ioctl.h>
#include <nuttx/mtd.h>
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/****************************************************************************
* Private Types
****************************************************************************/
/* This type represents the state of the MTD device. The struct mtd_dev_s
* must appear at the beginning of the definition so that you can freely
* cast between pointers to struct mtd_dev_s and struct skel_dev_s.
*/
struct skel_dev_s
{
struct mtd_dev_s mtd;
/* Other implementation specific data may follow here */
};
/****************************************************************************
* Private Function Prototypes
****************************************************************************/
/* MTD driver methods */
static int skel_erase(FAR struct mtd_dev_s *dev, off_t startblock, size_t nblocks);
static int skel_read(FAR struct mtd_dev_s *dev, off_t startblock, size_t nblocks,
FAR ubyte *buf);
static int skel_write(FAR struct mtd_dev_s *dev, off_t startblock, size_t nblocks,
FAR const ubyte *buf);
static int skel_ioctl(FAR struct mtd_dev_s *dev, int cmd, unsigned long arg);
/****************************************************************************
* Private Data
****************************************************************************/
static struct skel_dev_s g_skeldev =
{
{ skel_erase, skel_read, skel_write, skel_ioctl },
/* Initialization of any other implemenation specific data goes here */
};
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: skel_erase
****************************************************************************/
static int skel_erase(FAR struct mtd_dev_s *dev, off_t startblock, size_t nblocks)
{
FAR struct skel_dev_s *priv = (FAR struct skel_dev_s *)dev;
/* The interface definition assumes that all erase blocks ar the same size.
* If that is not true for this particular device, then transform the
* start block and nblocks as necessary.
*/
/* Erase the specified blocks and return status (OK or a negated errno) */
return OK;
}
/****************************************************************************
* Name: skel_read
****************************************************************************/
static int skel_read(FAR struct mtd_dev_s *dev, off_t startblock, size_t nblocks,
FAR ubyte *buf)
{
FAR struct skel_dev_s *priv = (FAR struct skel_dev_s *)dev;
/* The interface definition assumes that all read/write blocks ar the same size.
* If that is not true for this particular device, then transform the
* start block and nblocks as necessary.
*/
/* Read the specified blocks into the provided user buffer and return status
* (The positive, number of blocks actually read or a negated errno)
*/
return 0;
}
/****************************************************************************
* Name: skel_write
****************************************************************************/
static int skel_write(FAR struct mtd_dev_s *dev, off_t startblock, size_t nblocks,
FAR const ubyte *buf)
{
FAR struct skel_dev_s *priv = (FAR struct skel_dev_s *)dev;
/* The interface definition assumes that all read/write blocks ar the same size.
* If that is not true for this particular device, then transform the
* start block and nblocks as necessary.
*/
/* Write the specified blocks from the provided user buffer and return status
* (The positive, number of blocks actually written or a negated errno)
*/
return 0;
}
/****************************************************************************
* Name: skel_ioctl
****************************************************************************/
static int skel_ioctl(FAR struct mtd_dev_s *dev, int cmd, unsigned long arg)
{
FAR struct skel_dev_s *priv = (FAR struct skel_dev_s *)dev;
int ret = -EINVAL; /* Assume good command with bad parameters */
switch (cmd)
{
case MTDIOC_GEOMETRY:
{
FAR struct mtd_geometry_s *geo = (FARstruct mtd_geometry_s *)arg;
if (ppv)
{
/* Populate the geometry structure with information need to know
* the capacity and how to access the device.
*
* NOTE: that the device is treated as though it where just an array
* of fixed size blocks. That is most likely not true, but the client
* will expect the device logic to do whatever is necessary to make it
* appear so.
*/
geo->blocksize = 512; /* Size of one read/write block */
geo->erasesize = 4096; /* Size of one erase block */
geo->neraseblocks = 1024; /* Number of erase blocks */
ret = OK;
}
}
break;
case MTDIOC_XIPBASE:
{
FAR void **ppv = (FAR void**)arg;
if (ppv)
{
/* If media is directly acccesible, return (void*) base address
* of device memory. NULL otherwise. It is acceptable to omit
* this case altogether and simply return -ENOTTY.
*/
*ppv = NULL;
ret = OK;
}
}
break;
default:
ret = -ENOTTY; /* Bad command */
break;
}
return ret;
}
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: skel_initialize
*
* Description:
* Create an initialize MTD device instance. MTD devices are not registered
* in the file system, but are created as instances that can be bound to
* other functions (such as a block or character driver front end).
*
****************************************************************************/
void skel_initialize(void)
{
/* Perform initialization as necessary */
/* Return the implementation-specific state structure as the MTD device */
return ((FAR struct mtd_dev_s *)&g_skeldev;
}
include/nuttx/ioctl.h
+6 -3
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@@ -97,7 +97,8 @@
#define _BIOCVALID(c) (_IOC_TYPE(c)==_BIOCBASE)
#define _BIOC(nr) _IOC(_BIOCBASE,nr)
#define BIOC_XIPBASE _BIOC(0x0001) /* IN: None
#define BIOC_XIPBASE _BIOC(0x0001) /* IN: Pointer to pointer to void in
* which to received the XIP base.
* OUT: If media is directly acccesible,
* return (void*) base address
* of device memory */
@@ -108,10 +109,12 @@
#define _MTDIOC(nr) _IOC(_MTDIOCBASE,nr)
#define MTDIOC_GEOMETRY _MTDIOC(0x0001) /* IN: Pointer to write-able struct
* mtd_geometry_s (see mtd.h)
* mtd_geometry_s in which to receive
* receive geometry data (see mtd.h)
* OUT: Geometry structure is populated
* with data for the MTD */
#define MTDIOC_XIPBASE _MTDIOC(0x0002) /* IN: None
#define MTDIOC_XIPBASE _MTDIOC(0x0002) /* IN: Pointer to pointer to void in
* which to received the XIP base.
* OUT: If media is directly acccesible,
* return (void*) base address
* of device memory */
include/nuttx/mtd.h
+128
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@@ -0,0 +1,128 @@
/****************************************************************************
* include/nuttx/mtd.h
* Memory Technology Device (MTD) interface
*
* Copyright (C) 2007-2009 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.
*
****************************************************************************/
#ifndef __INCLUDE_NUTTX_MTD_H
#define __INCLUDE_NUTTX_MTD_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
/****************************************************************************
* Pre-Processor Definitions
****************************************************************************/
/* Macros to hide implementation */
#define MTD_ERASE(d,s,n) ((d)->erase ? (d)->erase(d,s,n) : (-ENOSYS))
#define MTD_READ(d,s,n,b) ((d)->read ? (d)->read(d,s,n,b) : (-ENOSYS))
#define MTD_WRITE(d,s,n,b) ((d)->write ? (d)->write(d,s,n,b) : (-ENOSYS))
#define MTD_IOCTL(d,c,a) ((d)->ioctl ? (d)->ioctl(d,c,a) : (-ENOSYS))
/****************************************************************************
* Public Types
****************************************************************************/
/* The following defines the geometry for the device. It treats the device
* as though it where just an array of fixed size blocks. That is most likely
* not true, but the client will expect the device logic to do whatever is
* necessary to make it appear so.
*/
struct mtd_geometry_s
{
uint16 blocksize; /* Size of one read/write block */
uint16 erasesize; /* Size of one erase blocks -- must be a multiple
* of blocksize. */
size_t neraseblocks; /* Number of erase blocks */
};
/* This structure defines the interface to a simple memory technology device.
* It will likely need to be extended in the future to support more complex
* devices.
*/
struct mtd_dev_s
{
/* The following methods operate on the MTD: */
/* Erase the specified erase blocks */
int (*erase)(FAR struct mtd_dev_s *dev, off_t startblock, size_t nblocks);
/* Read/write from the specified read/write blocks */
int (*read)(FAR struct mtd_dev_s *dev, off_t startblock, size_t nblocks,
FAR ubyte *buffer);
int (*write)(FAR struct mtd_dev_s *dev, off_t startblock, size_t nblocks,
FAR const ubyte *buffer);
/* Support other, less frequently used commands:
* - MTDIOC_GEOMETRY: Get MTD geometry
* - MTDIOC_XIPBASE: Convert block to physical address for eXecute-In-Place
* (see include/nuttx/ioctl.h)
*/
int (*ioctl)(FAR struct mtd_dev_s *dev, int cmd, unsigned long arg);
};
/****************************************************************************
* Public Data
****************************************************************************/
#ifndef __ASSEMBLY__
#ifdef __cplusplus
#define EXTERN extern "C"
extern "C" {
#else
#define EXTERN extern
#endif
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
#undef EXTERN
#ifdef __cplusplus
}
#endif
#endif /* __ASSEMBLY__ */
#endif /* __INCLUDE_NUTTX_MTD_H */
include/nuttx/spi.h
+4 -2
View File
@@ -102,7 +102,8 @@
*
****************************************************************************/
#define SPI_SETMODE(d,m) ((d)->ops->setmode ? (d)->ops->setmode(d,m) : (void))
#define SPI_SETMODE(d,m) \
do { if ((d)->ops->setmode) (d)->ops->setmode(d,m); } while (0)
/****************************************************************************
* Name: SPI_SETBITS
@@ -119,7 +120,8 @@
*
****************************************************************************/
#define SPI_SETBITS(d,b) ((d)->ops->setbits ? (d)->ops->setbits(d,b) : (void))
#define SPI_SETBITS(d,b) \
do { if ((d)->ops->setbits) (d)->ops->setmode(d,b); } while (0)
/****************************************************************************
* Name: SPI_STATUS