Add SPI-based MMC/SD support

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@2761 42af7a65-404d-4744-a932-0658087f49c3

configs/nucleus2g/nsh/defconfig

@@ -113,7 +113,7 @@ CONFIG_LPC17_UART3=n
 CONFIG_LPC17_CAN1=n
 CONFIG_LPC17_CAN2=n
 CONFIG_LPC17_SPI=n
-CONFIG_LPC17_SSP0=n
+CONFIG_LPC17_SSP0=y
 CONFIG_LPC17_SSP1=n
 CONFIG_LPC17_I2C0=n
 CONFIG_LPC17_I2C1=n
@@ -721,7 +721,7 @@ CONFIG_EXAMPLES_NSH_DISABLEBG=n
 CONFIG_EXAMPLES_NSH_ROMFSETC=n
 CONFIG_EXAMPLES_NSH_CONSOLE=y
 CONFIG_EXAMPLES_NSH_TELNET=n
-CONFIG_EXAMPLES_NSH_ARCHINIT=n
+CONFIG_EXAMPLES_NSH_ARCHINIT=y
 CONFIG_EXAMPLES_NSH_IOBUFFER_SIZE=512
 CONFIG_EXAMPLES_NSH_DHCPC=n
 CONFIG_EXAMPLES_NSH_NOMAC=n

configs/nucleus2g/src/Makefile

@@ -38,9 +38,12 @@
 CFLAGS		+= -I$(TOPDIR)/sched
 
 ASRCS		= 
-AOBJS		= $(ASRCS:.S=$(OBJEXT))
+CSRCS		= up_boot.c up_leds.c up_ssp.c
+ifeq ($(CONFIG_EXAMPLES_NSH_ARCHINIT),y)
+CSRCS		+= up_nsh.c
+endif
 
-CSRCS		= up_boot.c up_leds.c
+AOBJS		= $(ASRCS:.S=$(OBJEXT))
 COBJS		= $(CSRCS:.c=$(OBJEXT))
 
 SRCS		= $(ASRCS) $(CSRCS)

configs/nucleus2g/src/nucleus2g_internal.h

@@ -118,6 +118,8 @@
 #define NUCLEUS2G_5V_ENABLE          (GPIO_OUTPUT | GPIO_VALUE_ONE |  GPIO_PORT2 | GPIO_PIN13)
 #define NUCLEUS2G_5V_DISABLE         (GPIO_OUTPUT | GPIO_VALUE_ZERO | GPIO_PORT2 | GPIO_PIN13)
 
+#define NUCLEUS2G_MMCSD_CS           (GPIO_OUTPUT | GPIO_VALUE_ONE |  GPIO_PORT0 | GPIO_PIN16)
+
 /************************************************************************************
  * Public Types
  ************************************************************************************/
@@ -133,14 +135,14 @@
  ************************************************************************************/
 
 /************************************************************************************
- * Name: lpc17_spiinitialize
+ * Name: lpc17_sspinitialize
  *
  * Description:
  *   Called to configure SPI chip select GPIO pins for the NUCLEUS-2G board.
  *
  ************************************************************************************/
 
-extern void weak_function lpc17_spiinitialize(void);
+extern void weak_function lpc17_sspinitialize(void);
 
 /************************************************************************************
  * Name: lpc17_usbinitialize

configs/nucleus2g/src/up_boot.c

@@ -90,14 +90,14 @@ void lpc17_boardinitialize(void)
   lpc17_configgpio(NUCLEUS2G_232_POWERSAVE);
 #endif
 
-  /* Configure SPI chip selects if 1) SPI is not disabled, and 2) the weak function
+  /* Configure SSP chip selects if 1) at least one SSP is enabled, and 2) the weak
-   * lpc17_spiinitialize() has been brought into the link.
+   * function lpc17_sspinitialize() has been brought into the link.
    */
 
-#if defined(CONFIG_LPC17_SPI)
+#if defined(CONFIG_LPC17_SSP0) || defined(CONFIG_LPC17_SSP0)
-  if (lpc17_spiinitialize)
+  if (lpc17_sspinitialize)
     {
-      lpc17_spiinitialize();
+      lpc17_sspinitialize();
     }
 #endif
 

configs/nucleus2g/src/up_leds.c

@@ -151,8 +151,6 @@ static bool g_prevled2a;
 static bool g_currled2a;
 static bool g_prevled2b;
 static bool g_currled2b;
-static bool g_prevledhb;
-static bool g_currledhb;
 
 /****************************************************************************
  * Private Functions
@@ -267,7 +265,7 @@ void up_led2(uint8_t newstate)
 }
 
 /****************************************************************************
- * Name: up_led2
+ * Name: up_ledhb
  ****************************************************************************/
 
 void up_ledhb(uint8_t newstate)
@@ -283,10 +281,12 @@ void up_ledhb(uint8_t newstate)
       case LED_ON:
         ledhb = true;
         break;
+
+      case LED_NC:
+        return;
     }
+
   lpc17_gpiowrite(NUCLEUS2G_HEARTBEAT, ledhb);
-  g_prevledhb = g_currledhb;
-  g_currledhb = newstate;
 }
 
 /****************************************************************************

configs/nucleus2g/src/up_nsh.c

@@ -0,0 +1,155 @@
+/****************************************************************************
+ * config/nucleus2g/src/up_nsh.c
+ * arch/arm/src/board/up_nsh.c
+ *
+ *   Copyright (C) 2010 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 <stdio.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_NUCLEUS2G
+#  define CONFIG_EXAMPLES_NSH_HAVEUSBDEV 1
+#  define CONFIG_EXAMPLES_NSH_HAVEMMCSD  1
+#  if !defined(CONFIG_EXAMPLES_NSH_MMCSDSPIPORTNO) || CONFIG_EXAMPLES_NSH_MMCSDSPIPORTNO != 0
+#    error "The Nucleus-2G MMC/SD is on SSP0"
+#    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 Nucleus-2G MMC/SD is only one slot (0)"
+#    undef CONFIG_EXAMPLES_NSH_MMCSDSLOTNO
+#    define CONFIG_EXAMPLES_NSH_MMCSDSLOTNO 0
+#  endif
+#  ifndef CONFIG_LPC17_SSP0
+#    warning "CONFIG_LPC17_SSP0 is not enabled"
+#  endif
+#else
+#  error "Unrecognized 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 *ssp;
+  int ret;
+
+  /* Get the SSP port */
+
+  ssp = up_spiinitialize(CONFIG_EXAMPLES_NSH_MMCSDSPIPORTNO);
+  if (!ssp)
+    {
+      message("nsh_archinitialize: Failed to initialize SSP port %d\n",
+              CONFIG_EXAMPLES_NSH_MMCSDSPIPORTNO);
+      return -ENODEV;
+    }
+
+  message("Successfully initialized SSP port %d\n",
+          CONFIG_EXAMPLES_NSH_MMCSDSPIPORTNO);
+
+  /* Bind the SSP port to the slot */
+
+  ret = mmcsd_spislotinitialize(CONFIG_EXAMPLES_NSH_MMCSDMINOR, CONFIG_EXAMPLES_NSH_MMCSDSLOTNO, ssp);
+  if (ret < 0)
+    {
+      message("nsh_archinitialize: Failed to bind SSP port %d to MMC/SD slot %d: %d\n",
+              CONFIG_EXAMPLES_NSH_MMCSDSPIPORTNO, CONFIG_EXAMPLES_NSH_MMCSDSLOTNO, ret);
+      return ret;
+    }
+
+  message("Successfuly bound SSP port %d to MMC/SD slot %d\n",
+          CONFIG_EXAMPLES_NSH_MMCSDSPIPORTNO, CONFIG_EXAMPLES_NSH_MMCSDSLOTNO);
+  return OK;
+}

configs/nucleus2g/src/up_ssp.c

@@ -0,0 +1,185 @@
+/************************************************************************************
+ * configs/nucleus2g/src/up_ssp.c
+ * arch/arm/src/board/up_ssp.c
+ *
+ *   Copyright (C) 2010 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 <stdint.h>
+#include <stdbool.h>
+#include <debug.h>
+
+#include <nuttx/spi.h>
+#include <arch/board/board.h>
+
+#include "up_arch.h"
+#include "chip.h"
+#include "lpc17_internal.h"
+#include "nucleus2g_internal.h"
+
+/* The LM3S6965 Eval Kit microSD CS is on SSI0 */
+
+#if defined(CONFIG_LPC17_SSP0) || defined(CONFIG_LPC17_SSP1)
+
+/************************************************************************************
+ * Definitions
+ ************************************************************************************/
+
+/* Enables debug output from this file (needs CONFIG_DEBUG too) */
+
+#undef SSP_DEBUG   /* Define to enable debug */
+#undef SSP_VERBOSE /* Define to enable verbose debug */
+
+#ifdef SSP_DEBUG
+#  define sspdbg  lldbg
+#  ifdef SSP_VERBOSE
+#    define sspvdbg lldbg
+#  else
+#    define sspvdbg(x...)
+#  endif
+#else
+#  undef SSP_VERBOSE
+#  define sspdbg(x...)
+#  define sspvdbg(x...)
+#endif
+
+/* Dump GPIO registers */
+
+#ifdef SSP_VERBOSE
+#  define ssp_dumpgpio(m) lpc17_dumpgpio(SDCCS_GPIO, m)
+#else
+#  define ssp_dumpgpio(m)
+#endif
+
+/************************************************************************************
+ * Private Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Public Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Name: lpc17_sspinitialize
+ *
+ * Description:
+ *   Called to configure SPI chip select GPIO pins for the LM3S6965 Eval Kit.
+ *
+ ************************************************************************************/
+
+void weak_function lpc17_sspinitialize(void)
+{
+  /* Configure the SPI-based microSD CS GPIO */
+
+  ssp_dumpgpio("lpc17_sspinitialize() Entry)");
+
+  /* SSP0 connects only to the MMC/SD slot on the Nucleus 1G board.
+   * P0[15]/TXD1/SCK0/SCK              MMC_CLK
+   * P0[16]/RXD1/SSEL0/SSEL            MMC_CD
+   * P0[17]/CTS1/MISO0/MISO            MMC_DATA0
+   * P0[18]/DCD1/MOSI0/MOSI            MMC_MISO
+   *
+   * In SPI mode the MMC/SD DATA3/CD functions as the SPI chip select.
+   */
+
+#ifdef CONFIG_LPC17_SSP0
+  lpc17_configgpio(NUCLEUS2G_MMCSD_CS);
+#endif
+  
+  /* SSP1 goes off the Nucleus 2G board to the Babel CAN board along with 3 chip
+   * select pins.  However, it is currently not used on that board.
+   */
+
+#ifdef CONFIG_LPC17_SSP1
+# warning "SSP1 chip selects not known"
+#endif
+  ssp_dumpgpio("lpc17_sspinitialize() Exit");
+}
+
+/************************************************************************************
+ * Name:  lpc17_ssp0/ssp1select and lpc17_ssp0/ssp1status
+ *
+ * Description:
+ *   The external functions, lpc17_ssp0/ssp1select and lpc17_ssp0/ssp1status 
+ *   must be provided by board-specific logic.  They are implementations of the select
+ *   and status methods of the SPI interface defined by struct spi_ops_s (see
+ *   include/nuttx/spi.h). All other methods (including up_spiinitialize())
+ *   are provided by common LPC17xx logic.  To use this common SPI logic on your
+ *   board:
+ *
+ *   1. Provide logic in lpc17_boardinitialize() to configure SPI/SSP chip select
+ *      pins.
+ *   2. Provide lpc17_ssp0/ssp1select() and lpc17_ssp0/ssp1status() functions
+ *      in your board-specific logic.  These functions will perform chip selection
+ *      and status operations using GPIOs in the way your board is configured.
+ *   3. Add a calls to up_spiinitialize() in your low level application
+ *      initialization logic
+ *   4. 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).
+ *
+ ************************************************************************************/
+
+#ifdef CONFIG_LPC17_SSP0
+void  lpc17_ssp0select(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool selected)
+{
+  sspdbg("devid: %d CS: %s\n", (int)devid, selected ? "assert" : "de-assert");
+  ssp_dumpgpio("lpc17_spiselect() Entry");
+
+  if (devid == SPIDEV_MMCSD)
+    {
+      /* Assert the CS pin to the card */
+
+      lpc17_gpiowrite(NUCLEUS2G_MMCSD_CS, !selected);
+    }
+  ssp_dumpgpio("lpc17_spiselect() Exit");
+}
+
+uint8_t lpc17_ssp0status(FAR struct spi_dev_s *dev, enum spi_dev_e devid)
+{
+  sspdbg("Returning SPI_STATUS_PRESENT\n");
+  return SPI_STATUS_PRESENT;
+}
+#endif
+
+#ifdef CONFIG_LPC17_SSP1
+# warning "SSP1 chip selects not known"
+#endif
+
+#endif /* CONFIG_LPC17_SSP0 || CONFIG_LPC17_SSP1 */