diff options
author | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2012-06-30 00:53:54 +0000 |
---|---|---|
committer | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2012-06-30 00:53:54 +0000 |
commit | 41bec181a3c306b2006523305bead57dad8a7992 (patch) | |
tree | ec125eb4b4cd519fe4f49a4c90e41082462e010b /nuttx/configs/ekk-lm3s9b96/src/up_ssi.c | |
parent | 95a79061c82da0e2e6ff50990129a8b1800d8977 (diff) | |
download | px4-nuttx-41bec181a3c306b2006523305bead57dad8a7992.tar.gz px4-nuttx-41bec181a3c306b2006523305bead57dad8a7992.tar.bz2 px4-nuttx-41bec181a3c306b2006523305bead57dad8a7992.zip |
PM Update; add configs//ekk-lm3s9b96
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4888 42af7a65-404d-4744-a932-0658087f49c3
Diffstat (limited to 'nuttx/configs/ekk-lm3s9b96/src/up_ssi.c')
-rw-r--r-- | nuttx/configs/ekk-lm3s9b96/src/up_ssi.c | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/nuttx/configs/ekk-lm3s9b96/src/up_ssi.c b/nuttx/configs/ekk-lm3s9b96/src/up_ssi.c new file mode 100644 index 000000000..6a9e92c95 --- /dev/null +++ b/nuttx/configs/ekk-lm3s9b96/src/up_ssi.c @@ -0,0 +1,162 @@ +/************************************************************************************
+ * configs/ekk-lm3s9b96/src/up_ssi.c
+ * arch/arm/src/board/up_ssi.c
+ *
+ * Copyright (C) 2012 Gregory Nutt. All rights reserved.
+ * Authors: Gregory Nutt <gnutt@nuttx.org>
+ * Jose Pablo Rojas V. <jrojas@nx-engineering.com>
+ *
+ * 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 "ekklm3s9b96_internal.h"
+
+#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
+#if 0
+# define ssi_dumpgpio(m) lm3s_dumpgpio(SDCCS_GPIO, m)
+#endif
+#else
+# define ssi_dumpgpio(m)
+#endif
+
+/************************************************************************************
+ * Private Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Public Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Name: lm3s_ssiinitialize
+ *
+ * Description:
+ * Called to configure SPI chip select GPIO pins for the LM3S6965 Eval Kit.
+ *
+ ************************************************************************************/
+
+void weak_function lm3s_ssiinitialize(void)
+{
+ /* Configure the SPI CS GPIO */
+#if 0
+ ssi_dumpgpio("lm3s_ssiinitialize() Entry)");
+ ssi_dumpgpio("lm3s_ssiinitialize() Exit");
+#endif
+}
+
+#if 0
+/****************************************************************************
+ * 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
+#endif /* !CONFIG_SSI0_DISABLE || !CONFIG_SSI1_DISABLE */
|