Add configuration for lm3s8962-ek

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@2913 42af7a65-404d-4744-a932-0658087f49c3

1 files changed, 164 insertions, 0 deletions

diff --git a/nuttx/configs/lm3s8962-ek/src/up_ssi.c b/nuttx/configs/lm3s8962-ek/src/up_ssi.c
new file mode 100755
index 000000000..27899b5bf
--- /dev/null
+++ b/nuttx/configs/lm3s8962-ek/src/up_ssi.c
@@ -0,0 +1,164 @@
+/************************************************************************************

+ * configs/lm3s8962-ek/src/up_ssi.c

+ * arch/arm/src/board/up_ssi.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 "lm3s_internal.h"

+#include "lm3s8962ek_internal.h"

+

+/* The LM3S8962 Eval Kit microSD CS is on SSI0 */

+

+#if !defined(CONFIG_SSI0_DISABLE) /* || !defined(CONFIG_SSI1_DISABLE) */

+

+/************************************************************************************

+ * Definitions

+ ************************************************************************************/

+

+/* Enables debug output from this file (needs CONFIG_DEBUG too) */

+

+#undef SSI_DEBUG   /* Define to enable debug */

+#undef SSI_VERBOSE /* Define to enable verbose debug */

+

+#ifdef SSI_DEBUG

+#  define ssidbg  lldbg

+#  ifdef SSI_VERBOSE

+#    define ssivdbg lldbg

+#  else

+#    define ssivdbg(x...)

+#  endif

+#else

+#  undef SSI_VERBOSE

+#  define ssidbg(x...)

+#  define ssivdbg(x...)

+#endif

+

+/* Dump GPIO registers */

+

+#ifdef SSI_VERBOSE

+#  define ssi_dumpgpio(m) lm3s_dumpgpio(SDCCS_GPIO, m)

+#else

+#  define ssi_dumpgpio(m)

+#endif

+

+/************************************************************************************

+ * Private Functions

+ ************************************************************************************/

+

+/************************************************************************************

+ * Public Functions

+ ************************************************************************************/

+

+/************************************************************************************

+ * Name: lm3s_ssiinitialize

+ *

+ * Description:

+ *   Called to configure SPI chip select GPIO pins for the LM3S8962 Eval Kit.

+ *

+ ************************************************************************************/

+

+void weak_function lm3s_ssiinitialize(void)

+{

+  /* Configure the SPI-based microSD CS GPIO */

+

+  ssi_dumpgpio("lm3s_ssiinitialize() Entry)");

+  lm3s_configgpio(SDCCS_GPIO);

+#ifdef CONFIG_NX_LCDDRIVER

+  lm3s_configgpio(OLEDCS_GPIO);

+#endif

+  ssi_dumpgpio("lm3s_ssiinitialize() Exit");

+}

+

+/****************************************************************************

+ * 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, bool selected)

+{

+  ssidbg("devid: %d CS: %s\n", (int)devid, selected ? "assert" : "de-assert");

+  ssi_dumpgpio("lm3s_spiselect() Entry");

+

+  if (devid == SPIDEV_MMCSD)

+    {

+      /* Assert the CS pin to the card */

+

+      lm3s_gpiowrite(SDCCS_GPIO, !selected);

+    }

+#ifdef CONFIG_NX_LCDDRIVER

+  else if (devid == SPIDEV_DISPLAY)

+    {

+      /* Assert the CS pin to the display */

+

+      lm3s_gpiowrite(OLEDCS_GPIO, !selected);

+    }

+#endif

+  ssi_dumpgpio("lm3s_spiselect() Exit");

+}

+

+uint8_t lm3s_spistatus(FAR struct spi_dev_s *dev, enum spi_dev_e devid)

+{

+  ssidbg("Returning SPI_STATUS_PRESENT\n");

+  return SPI_STATUS_PRESENT;

+}

+

+#endif /* !CONFIG_SSI0_DISABLE || !CONFIG_SSI1_DISABLE */