Add SPI-based MMC/SD support for lm3s

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@1820 42af7a65-404d-4744-a932-0658087f49c3

configs/eagle100/httpd/defconfig

@@ -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
 #

configs/eagle100/include/board.h

@@ -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
  ************************************************************************************/

configs/eagle100/nettest/defconfig

@@ -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
 #

configs/eagle100/nsh/defconfig

@@ -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
 #

configs/eagle100/ostest/defconfig

@@ -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
 #

configs/eagle100/src/Makefile

@@ -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)

configs/eagle100/src/up_boot.c

@@ -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
 }

configs/eagle100/src/up_ssi.c

@@ -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;
+}
+