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Add SPI-based MMC/SD support for lm3s

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@1820 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo 2009-05-23 23:37:25 +00:00
parent 887d40853e
commit 44ecaa8789
16 changed files with 394 additions and 25 deletions
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1
ChangeLog
View File

@ -729,4 +729,5 @@
Micromint Eagle100 board.
* Documentation/NuttxPortingGuide.html: Added a section on NuttX device drivers.
* arch/arm/src/lm3s: Added an SSI driver for the LM3S6918
* examples/nsh: Added MMC/SD support for the LM3S6918

1
Documentation/NuttX.html
View File

@ -1419,6 +1419,7 @@ nuttx-0.4.7 2009-xx-xx Gregory Nutt <spudmonkey@racsa.co.cr>
Micromint Eagle100 board.
* Documentation/NuttxPortingGuide.html: Added a section on NuttX device drivers.
* arch/arm/src/lm3s: Added an SSI driver for the LM3S6918
* examples/nsh: Added MMC/SD support for the LM3S6918
pascal-0.1.3 2009-xx-xx Gregory Nutt <spudmonkey@racsa.co.cr>

4
TODO
View File

@ -543,9 +543,9 @@ o ARM/LM3S6918 (arch/arm/src/lm3s/)
Status: Open
Priority: Low
Description: Still need to implement I2C, SSI, MMC/SD, and Ethernet
Description: Still need to implement I2C
Status: Open
Priority: High
Priority: Low
o pjrc-8052 / MCS51 (arch/pjrc-8051/)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

102
arch/arm/src/lm3s/lm3s_ssi.c
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@ -542,25 +542,34 @@ static int ssi_performtx(struct lm32_ssidev_s *priv)
/* Update the count of words to to transferred */
priv->ntxwords -= ntxd;
}
/* Make sure that the Tx FIFO half-empty interrupt is enabled */
/* Check again... Now have all of the Tx words been sent? */
#ifndef CONFIG_SSI_POLLWAIT
regval = ssi_getreg(priv, LM3S_SSI_IM_OFFSET);
regval = ssi_getreg(priv, LM3S_SSI_IM_OFFSET);
if (priv->ntxwords > 0)
{
/* No.. Enable the Tx FIFO interrupt. This interrupt occurs
* when the Tx FIFO is 1/2 full or less.
*/
#ifdef CONFIG_DEBUG
regval |= (SSI_IM_TX|SSI_RIS_ROR)
#else
regval |= SSI_IM_TX;
ssi_putreg(priv, LM3S_SSI_IM_OFFSET, regval);
#endif
}
#ifndef CONFIG_SSI_POLLWAIT
else
{
/* Yes.. The transfer is complete, disable Tx FIFO half-empty interrupt */
/* Yes.. Disable the Tx FIFO interrupt. The final stages of
* the transfer will be driven by Rx FIFO interrupts.
*/
regval = ssi_getreg(priv, LM3S_SSI_IM_OFFSET);
regval &= ~SSI_IM_TX;
ssi_putreg(priv, LM3S_SSI_IM_OFFSET, regval);
regval &= ~(SSI_IM_TX|SSI_RIS_ROR);
}
#endif
ssi_putreg(priv, LM3S_SSI_IM_OFFSET, regval);
#endif /* CONFIG_SSI_POLLWAIT */
}
return ntxd;
}
@ -582,6 +591,10 @@ static int ssi_performtx(struct lm32_ssidev_s *priv)
static inline void ssi_performrx(struct lm32_ssidev_s *priv)
{
#ifndef CONFIG_SSI_POLLWAIT
uint32 regval;
#endif
/* Loop while data is available in the Rx FIFO */
while (ssi_rxfifonotempty(priv))
@ -596,6 +609,38 @@ static inline void ssi_performrx(struct lm32_ssidev_s *priv)
priv->nrxwords++;
}
}
/* The Rx FIFO is now empty. While there is Tx data to be sent, the
* transfer will be driven by Tx FIFO interrupts. The final part
* of the transfer is driven by Rx FIFO interrupts only.
*/
#ifndef CONFIG_SSI_POLLWAIT
regval = ssi_getreg(priv, LM3S_SSI_IM_OFFSET);
if (priv->ntxwords == 0 && priv->nrxwords < priv->nwords)
{
/* There are no more outgoing words to send, but there are
* additional incoming words expected (I would think that this
* a real corner case, be we will handle it with an extra
* interrupt, probably an Rx timeout).
*/
#ifdef CONFIG_DEBUG
regval |= (SSI_IM_RX|SSI_IM_RT|SSI_IM_ROR);
#else
regval |= (SSI_IM_RX|SSI_IM_RT);
#endif
}
else
{
/* No.. there are either more Tx words to send or all Rx words
* have received. Disable Rx FIFO interrupts.
*/
regval &= ~(SSI_IM_RX|SSI_IM_RT);
}
ssi_putreg(priv, LM3S_SSI_IM_OFFSET, regval);
#endif /* CONFIG_SSI_POLLWAIT */
}
/****************************************************************************
@ -659,7 +704,11 @@ static int ssi_transfer(struct lm32_ssidev_s *priv, const void *txbuffer,
priv->rxword = ssi_rxnull;
}
/* Prime the Tx FIFO to start the sequence (saves one interrupt) */
/* Prime the Tx FIFO to start the sequence (saves one interrupt).
* At this point, all SSI interrupts should be disabled, but the
* operation of ssi_performtx() will set up the interrupts
* approapriately.
*/
#ifndef CONFIG_SSI_POLLWAIT
flags = irqsave();
@ -671,7 +720,11 @@ static int ssi_transfer(struct lm32_ssidev_s *priv, const void *txbuffer,
*/
irqrestore(flags);
ssi_semtake(&priv->xfrsem);
do
{
ssi_semtake(&priv->xfrsem);
}
while (priv->nrxwords < priv->nwords);
#else
/* Perform the transfer using polling logic. This will totally
@ -770,6 +823,15 @@ static int ssi_interrupt(int irq, void *context)
regval = ssi_getreg(priv, LM3S_SSI_RIS_OFFSET);
ssi_putreg(priv, LM3S_SSI_ICR_OFFSET, regval);
/* Check for Rx FIFO overruns */
#ifdef CONFIG_DEBUG
if ((regval & SSI_RIS_ROR) != 0)
{
lldbg("Rx FIFO Overrun!\n");
}
#endif
/* Handle outgoing Tx FIFO transfers */
ntxd = ssi_performtx(priv);
@ -782,7 +844,11 @@ static int ssi_interrupt(int irq, void *context)
if (priv->nrxwords >= priv->nwords)
{
/* Yes, wake up the waiting thread */
/* Yes.. Disable all SSI interrupt sources */
ssi_putreg(priv, LM3S_SSI_IM_OFFSET, 0);
/* Wake up the waiting thread */
ssi_semgive(&priv->xfrsem);
}
@ -1235,16 +1301,13 @@ FAR struct spi_dev_s *up_spiinitialize(int port)
ssi_setfrequencyinternal(priv, 400000);
/* Enable interrupts on data ready in the RX FIFL (and certain error conditions) */
/* Disable all SSI interrupt sources */
#ifndef CONFIG_SSI_POLLWAIT
ssi_putreg(priv, LM3S_SSI_IM_OFFSET,
SSI_IM_ROR | /* SSI Rx FIFO Overrun */
SSI_IM_RT | /* SSI Rx FIFO Time-Out */
SSI_IM_RX); /* SSI Rx FIFO half full or more */
ssi_putreg(priv, LM3S_SSI_IM_OFFSET, 0);
/* Attach the interrupt */
#ifndef CONFIG_SSI_POLLWAIT
#if NSSI_ENABLED > 1
irq_attach(priv->irq, (xcpt_t)ssi_interrupt);
#else
@ -1256,7 +1319,7 @@ FAR struct spi_dev_s *up_spiinitialize(int port)
ssi_enable(priv, SSI_CR1_SSE);
/* Enable SSI interrupts */
/* Enable SSI interrupts (They are still disabled at the source). */
#ifndef CONFIG_SSI_POLLWAIT
#if NSSI_ENABLED > 1
@ -1265,6 +1328,7 @@ FAR struct spi_dev_s *up_spiinitialize(int port)
up_enable_irq(SSI_IRQ);
#endif
#endif /* CONFIG_SSI_POLLWAIT */
irqrestore(flags);
return (FAR struct spi_dev_s *)priv;
}

4
arch/arm/src/lm3s/lm3s_start.c
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@ -134,10 +134,10 @@ void __start(void)
#endif
showprogress('D');
/* Initialize onboard LEDs */
/* Initialize onboard resources */
#ifdef CONFIG_ARCH_LEDS
up_ledinit();
lm3s_boardinitialize();
#endif
showprogress('E');

7
configs/eagle100/httpd/defconfig
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@ -514,6 +514,13 @@ CONFIG_EXAMPLES_NSH_FATSECTSIZE=512
CONFIG_EXAMPLES_NSH_FATNSECTORS=1024
CONFIG_EXAMPLES_NSH_FATMOUNTPT=/tmp
#
# Architecture-specific NSH options
#
CONFIG_EXAMPLES_NSH_MMCSDSPIPORTNO=0
CONFIG_EXAMPLES_NSH_MMCSDSLOTNO=0
CONFIG_EXAMPLES_NSH_MMCSDMINOR=0
#
# Settings for examples/dhcpd
#

7
configs/eagle100/include/board.h
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@ -44,6 +44,7 @@
#ifndef __ASSEMBLY__
# include <sys/types.h>
#endif
#include "lm3s_internal.h"
/************************************************************************************
* Definitions
@ -109,6 +110,12 @@
#define LED_ASSERTION 6 /* ON OFF */
#define LED_PANIC 7 /* ON OFF */
/* Eagle-100 GPIOs ******************************************************************/
/* GPIO for microSD card chip select */
#define SDC_CS (GPIO_PORTG | 2)
/************************************************************************************
* Public Function Prototypes
************************************************************************************/

7
configs/eagle100/nettest/defconfig
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@ -505,6 +505,13 @@ CONFIG_EXAMPLES_NSH_FATSECTSIZE=512
CONFIG_EXAMPLES_NSH_FATNSECTORS=1024
CONFIG_EXAMPLES_NSH_FATMOUNTPT=/tmp
#
# Architecture-specific NSH options
#
CONFIG_EXAMPLES_NSH_MMCSDSPIPORTNO=0
CONFIG_EXAMPLES_NSH_MMCSDSLOTNO=0
CONFIG_EXAMPLES_NSH_MMCSDMINOR=0
#
# Stack and heap information
#

7
configs/eagle100/nsh/defconfig
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@ -490,6 +490,13 @@ CONFIG_EXAMPLES_NSH_FATSECTSIZE=512
CONFIG_EXAMPLES_NSH_FATNSECTORS=1024
CONFIG_EXAMPLES_NSH_FATMOUNTPT=/tmp
#
# Architecture-specific NSH options
#
CONFIG_EXAMPLES_NSH_MMCSDSPIPORTNO=0
CONFIG_EXAMPLES_NSH_MMCSDSLOTNO=0
CONFIG_EXAMPLES_NSH_MMCSDMINOR=0
#
# Stack and heap information
#

7
configs/eagle100/ostest/defconfig
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@ -490,6 +490,13 @@ CONFIG_EXAMPLES_NSH_FATSECTSIZE=512
CONFIG_EXAMPLES_NSH_FATNSECTORS=1024
CONFIG_EXAMPLES_NSH_FATMOUNTPT=/tmp
#
# Architecture-specific NSH options
#
CONFIG_EXAMPLES_NSH_MMCSDSPIPORTNO=0
CONFIG_EXAMPLES_NSH_MMCSDSLOTNO=0
CONFIG_EXAMPLES_NSH_MMCSDMINOR=0
#
# Stack and heap information
#

2
configs/eagle100/src/Makefile
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@ -39,7 +39,7 @@ CFLAGS += -I$(TOPDIR)/sched
ASRCS =
AOBJS = $(ASRCS:.S=$(OBJEXT))
CSRCS = up_boot.c up_leds.c up_ethernet.c
CSRCS = up_boot.c up_leds.c up_ethernet.c up_ssi.c
COBJS = $(CSRCS:.c=$(OBJEXT))
SRCS = $(ASRCS) $(CSRCS)

9
configs/eagle100/src/up_boot.c
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@ -68,4 +68,13 @@
void lm3s_boardinitialize(void)
{
/* Configure the SPI-based microSD CS GPIO */
lm3s_configgpio(SDC_CS | GPIO_PADTYPE_STDWPU | GPIO_STRENGTH_4MA | GPIO_VALUE_ONE);
/* Configure on-board LEDs */
#ifdef CONFIG_ARCH_LEDS
up_ledinit();
#endif
}

96
configs/eagle100/src/up_ssi.c Normal file
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@ -0,0 +1,96 @@
/************************************************************************************
* configs/eagle100/src/up_ssi.c
* arch/arm/src/board/up_ssi.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 <nuttx/spi.h>
#include <arch/board/board.h>
#include "up_arch.h"
#include "lm3s_internal.h"
/************************************************************************************
* Definitions
************************************************************************************/
/************************************************************************************
* Private Functions
************************************************************************************/
/************************************************************************************
* Public Functions
************************************************************************************/
/****************************************************************************
* The external functions, lm3s_spiselect and lm3s_spistatus must be provided
* by board-specific logic. The are implementations of the select and status
* methods SPI interface defined by struct spi_ops_s (see include/nuttx/spi.h).
* All othermethods (including up_spiinitialize()) are provided by common
* logic. To use this common SPI logic on your board:
*
* 1. Provide lm3s_spiselect() and lm3s_spistatus() functions in your
* board-specific logic. This function will perform chip selection and
* status operations using GPIOs in the way your board is configured.
* 2. Add a call to up_spiinitialize() in your low level initialization
* logic
* 3. The handle returned by up_spiinitialize() may then be used to bind the
* SPI driver to higher level logic (e.g., calling
* mmcsd_spislotinitialize(), for example, will bind the SPI driver to
* the SPI MMC/SD driver).
*
****************************************************************************/
void lm3s_spiselect(FAR struct spi_dev_s *dev, enum spi_dev_e devid, boolean selected)
{
if (devid == SPIDEV_MMCSD)
{
/* Assert the CS pin to the card */
lm3s_gpiowrite(SDC_CS, selected ? 0 : 1);
}
}
ubyte lm3s_spistatus(FAR struct spi_dev_s *dev, enum spi_dev_e devid)
{
#warning "Need to check schematic"
return SPI_STATUS_PRESENT;
}

5
examples/nsh/Makefile
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@ -64,6 +64,11 @@ CSRCS += nsh_lpc214x.c
CFLAGS += -DCONFIG_EXAMPLES_NSH_ARCHINIT=1
endif
ifeq ($(CONFIG_ARCH_CHIP),lm3s)
CSRCS += nsh_lm3s.c
CFLAGS += -DCONFIG_EXAMPLES_NSH_ARCHINIT=1
endif
AOBJS = $(ASRCS:.S=$(OBJEXT))
COBJS = $(CSRCS:.c=$(OBJEXT))

158
examples/nsh/nsh_lm3s.c Normal file
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@ -0,0 +1,158 @@
/****************************************************************************
* examples/nsh/nsh_lm3s.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 <errno.h>
#include <nuttx/spi.h>
#include <nuttx/mmcsd.h>
/****************************************************************************
* Pre-Processor Definitions
****************************************************************************/
/* Configuration ************************************************************/
/* PORT and SLOT number probably depend on the board configuration */
#ifdef CONFIG_ARCH_BOARD_EAGLE100
# undef CONFIG_EXAMPLES_NSH_HAVEUSBDEV
# define CONFIG_EXAMPLES_NSH_HAVEMMCSD 1
# if !defined(CONFIG_EXAMPLES_NSH_MMCSDSPIPORTNO) || CONFIG_EXAMPLES_NSH_MMCSDSPIPORTNO != 0
# error "The Eagle100 MMC/SD is on SSI0"
# undef CONFIG_EXAMPLES_NSH_MMCSDSPIPORTNO
# define CONFIG_EXAMPLES_NSH_MMCSDSPIPORTNO 0
# endif
# if !defined(CONFIG_EXAMPLES_NSH_MMCSDSLOTNO) || CONFIG_EXAMPLES_NSH_MMCSDSLOTNO != 0
# error "The Eagle100 MMC/SD is on SSI0 slot 0"
# undef CONFIG_EXAMPLES_NSH_MMCSDSLOTNO
# define CONFIG_EXAMPLES_NSH_MMCSDSLOTNO 0
# endif
#else
/* Add configuration for new LPC214x boards here */
# error "Unrecognized lm3s board"
# undef CONFIG_EXAMPLES_NSH_HAVEUSBDEV
# undef CONFIG_EXAMPLES_NSH_HAVEMMCSD
#endif
/* Can't support USB features if USB is not enabled */
#ifndef CONFIG_USBDEV
# undef CONFIG_EXAMPLES_NSH_HAVEUSBDEV
#endif
/* Can't support MMC/SD features if mountpoints are disabled */
#if defined(CONFIG_DISABLE_MOUNTPOINT)
# undef CONFIG_EXAMPLES_NSH_HAVEMMCSD
#endif
#ifndef CONFIG_EXAMPLES_NSH_MMCSDMINOR
# define CONFIG_EXAMPLES_NSH_MMCSDMINOR 0
#endif
/* Debug ********************************************************************/
#ifdef CONFIG_CPP_HAVE_VARARGS
# ifdef CONFIG_DEBUG
# define message(...) lib_lowprintf(__VA_ARGS__)
# else
# define message(...) printf(__VA_ARGS__)
# endif
#else
# ifdef CONFIG_DEBUG
# define message lib_lowprintf
# else
# define message printf
# endif
#endif
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: nsh_archinitialize
*
* Description:
* Perform architecture specific initialization
*
****************************************************************************/
int nsh_archinitialize(void)
{
FAR struct spi_dev_s *spi;
int ret;
/* Get the SPI port */
message("nsh_archinitialize: Initializing SPI port %d\n",
CONFIG_EXAMPLES_NSH_MMCSDSPIPORTNO);
spi = up_spiinitialize(CONFIG_EXAMPLES_NSH_MMCSDSPIPORTNO);
if (!spi)
{
message("nsh_archinitialize: Failed to initialize SPI port %d\n",
CONFIG_EXAMPLES_NSH_MMCSDSPIPORTNO);
return -ENODEV;
}
message("nsh_archinitialize: Successfully initialized SPI port %d\n",
CONFIG_EXAMPLES_NSH_MMCSDSPIPORTNO);
/* Bind the SPI port to the slot */
message("nsh_archinitialize: Binding SPI port %d to MMC/SD slot %d\n",
CONFIG_EXAMPLES_NSH_MMCSDSPIPORTNO, CONFIG_EXAMPLES_NSH_MMCSDSLOTNO);
ret = mmcsd_spislotinitialize(CONFIG_EXAMPLES_NSH_MMCSDMINOR, CONFIG_EXAMPLES_NSH_MMCSDSLOTNO, spi);
if (ret < 0)
{
message("nsh_archinitialize: Failed to bind SPI port %d to MMC/SD slot %d: %d\n",
CONFIG_EXAMPLES_NSH_MMCSDSPIPORTNO, CONFIG_EXAMPLES_NSH_MMCSDSLOTNO, ret);
return ret;
}
message("nsh_archinitialize: Successfuly bound SPI port %d to MMC/SD slot %d\n",
CONFIG_EXAMPLES_NSH_MMCSDSPIPORTNO, CONFIG_EXAMPLES_NSH_MMCSDSLOTNO);
return OK;
}

2
examples/nsh/nsh_lpc214x.c
View File

@ -128,7 +128,7 @@ int nsh_archinitialize(void)
message("nsh_archinitialize: Initializing SPI port %d\n",
CONFIG_EXAMPLES_NSH_MMCSDSPIPORTNO);
spi = up_spiinitialize(1);
spi = up_spiinitialize(CONFIG_EXAMPLES_NSH_MMCSDSPIPORTNO);
if (!spi)
{
message("nsh_archinitialize: Failed to initialize SPI port %d\n",