1 files changed, 164 insertions, 0 deletions
diff --git a/nuttx/configs/teensy31/src/up_spi.c b/nuttx/configs/teensy31/src/up_spi.c
new file mode 100644
index 000000000..acb1ca1c9
--- /dev/null
+++ b/nuttx/configs/teensy31/src/up_spi.c
@@ -0,0 +1,164 @@
+/************************************************************************************
+ * configs/kwikstik-k40/src/up_spi.c
+ * arch/arm/src/board/up_spi.c
+ *
+ *   Copyright (C) 2011 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * 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/spi.h>
+#include <arch/board/board.h>
+
+#include "up_arch.h"
+#include "chip.h"
+#include "kinetis_internal.h"
+#include "kwikstik-internal.h"
+
+#if defined(CONFIG_KINETIS_SPI1) || defined(CONFIG_KINETIS_SPI2)
+
+/************************************************************************************
+ * Definitions
+ ************************************************************************************/
+
+/* Enables debug output from this file (needs CONFIG_DEBUG too) */
+
+#ifdef CONFIG_DEBUG_SPI
+#  define spidbg  lldbg
+#  ifdef CONFIG_DEBUG_SPI_VERBOSE
+#    define spivdbg lldbg
+#  else
+#    define spivdbg(x...)
+#  endif
+#else
+#  undef CONFIG_DEBUG_SPI_VERBOSE
+#  define spidbg(x...)
+#  define spivdbg(x...)
+#endif
+
+/************************************************************************************
+ * Private Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Public Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Name: kinetis_spiinitialize
+ *
+ * Description:
+ *   Called to configure SPI chip select GPIO pins for the KwikStik-K40 board.
+ *
+ ************************************************************************************/
+
+void weak_function kinetis_spiinitialize(void)
+{
+# warning "Missing logic"
+}
+
+/****************************************************************************
+ * Name:  kinetis_spi1/2/3select and kinetis_spi1/2/3status
+ *
+ * Description:
+ *   The external functions, kinetis_spi1/2/3select and kinetis_spi1/2/3status 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/spi.h). All other methods (including up_spiinitialize())
+ *   are provided by common Kinetis logic.  To use this common SPI logic on your
+ *   board:
+ *
+ *   1. Provide logic in kinetis_boardinitialize() to configure SPI chip select
+ *      pins.
+ *   2. Provide kinetis_spi1/2/3select() and kinetis_spi1/2/3status() 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_KINETIS_SPI1
+void kinetis_spi1select(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool selected)
+{
+  spidbg("devid: %d CS: %s\n", (int)devid, selected ? "assert" : "de-assert");
+# warning "Missing logic"
+}
+
+uint8_t kinetis_spi1status(FAR struct spi_dev_s *dev, enum spi_dev_e devid)
+{
+# warning "Missing logic"
+  return SPI_STATUS_PRESENT;
+}
+#endif
+
+#ifdef CONFIG_KINETIS_SPI2
+void kinetis_spi2select(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool selected)
+{
+  spidbg("devid: %d CS: %s\n", (int)devid, selected ? "assert" : "de-assert");
+# warning "Missing logic"
+}
+
+uint8_t kinetis_spi2status(FAR struct spi_dev_s *dev, enum spi_dev_e devid)
+{
+# warning "Missing logic"
+  return SPI_STATUS_PRESENT;
+}
+#endif
+
+#ifdef CONFIG_KINETIS_SPI3
+void kinetis_spi3select(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool selected)
+{
+  spidbg("devid: %d CS: %s\n", (int)devid, selected ? "assert" : "de-assert");
+# warning "Missing logic"
+}
+
+uint8_t kinetis_spi3status(FAR struct spi_dev_s *dev, enum spi_dev_e devid)
+{
+# warning "Missing logic"
+  return SPI_STATUS_PRESENT;
+}
+#endif
+
+#endif /* CONFIG_KINETIS_SPI1 || CONFIG_KINETIS_SPI2 */