1 files changed, 223 insertions, 0 deletions
diff --git a/nuttx/configs/pic32mx7mmb/src/up_spi.c b/nuttx/configs/pic32mx7mmb/src/up_spi.c
new file mode 100644
index 000000000..48e059294
--- /dev/null
+++ b/nuttx/configs/pic32mx7mmb/src/up_spi.c
@@ -0,0 +1,223 @@
+/************************************************************************************
+ * configs/pic32mx7mmb/src/up_ssp.c
+ * arch/arm/src/board/up_ssp.c
+ *
+ *   Copyright (C) 2012 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.h>
+#include <arch/board/board.h>
+
+#include "up_arch.h"
+#include "chip.h"
+#include "pic32mx-internal.h"
+#include "pic32mx7mmb_internal.h"
+
+#if defined(CONFIG_PIC32MX_SPI1) || defined(CONFIG_PIC32MX_SPI2) || \
+    defined(CONFIG_PIC32MX_SPI3) || defined(CONFIG_PIC32MX_SPI4)
+
+/************************************************************************************
+ * Definitions
+ ************************************************************************************/
+
+/* The following enable debug output from this file (needs CONFIG_DEBUG too).
+ * 
+ * CONFIG_SPI_DEBUG - Define to enable basic SPI debug
+ * CONFIG_SPI_VERBOSE - Define to enable verbose SPI debug
+ */
+
+#ifdef CONFIG_SPI_DEBUG
+#  define sspdbg  lldbg
+#  ifdef CONFIG_SPI_VERBOSE
+#    define sspvdbg lldbg
+#  else
+#    define sspvdbg(x...)
+#  endif
+#else
+#  undef CONFIG_SPI_VERBOSE
+#  define sspdbg(x...)
+#  define sspvdbg(x...)
+#endif
+
+/************************************************************************************
+ * Private Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Public Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Name: pic32mx_sspinitialize
+ *
+ * Description:
+ *   Called to configure SPI chip select GPIO pins for the Sure PIC32MX board.
+ *
+ ************************************************************************************/
+
+void weak_function pic32mx_sspinitialize(void)
+{
+  /* Configure the SPI chip select GPIOs */
+
+#warning "Missing logic"
+}
+
+/************************************************************************************
+ * Name:  pic32mx_spiNselect, pic32mx_spiNstatus, and pic32mx_spiNcmddata
+ *
+ * Description:
+ *   These external functions must be provided by board-specific logic.  They are
+ *   implementations of the select, status, and cmddata 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 PIC32MX logic.  To use
+ *   this common SPI logic on your board:
+ *
+ *   1. Provide logic in pic32mx_boardinitialize() to configure SPI/SSP chip select
+ *      pins.
+ *   2. Provide pic32mx_spiNselect() and pic32mx_spiNstatus() functions
+ *      in your board-specific logic.  These functions will perform chip selection
+ *      and status operations using GPIOs in the way your board is configured.
+ *   2. If CONFIG_SPI_CMDDATA is defined in the NuttX configuration, provide
+ *      pic32mx_spiNcmddata() functions in your board-specific logic.  These
+ *      functions will perform cmd/data selection operations using GPIOs in the way
+ *      your board is configured.
+ *   3. Add a call 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).
+ *
+ ************************************************************************************/
+
+struct spi_dev_s;
+enum spi_dev_e;
+
+#ifdef CONFIG_PIC32MX_SPI1
+void  pic32mx_spi1select(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");
+#warning "Missing logic"
+}
+
+uint8_t pic32mx_spi1status(FAR struct spi_dev_s *dev, enum spi_dev_e devid)
+{
+  sspdbg("Returning nothing\n");
+#warning "Missing logic"
+  return 0;
+}
+#ifdef CONFIG_SPI_CMDDATA
+int pic32mx_spi1cmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cmd)
+{
+#warning "Missing logic"
+  return 0;
+}
+#endif
+#endif
+
+#ifdef CONFIG_PIC31MX_SPI1
+void  pic31mx_spi1select(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");
+#warning "Missing logic"
+}
+
+uint8_t pic31mx_spi1status(FAR struct spi_dev_s *dev, enum spi_dev_e devid)
+{
+  sspdbg("Returning nothing\n");
+#warning "Missing logic"
+  return 0;
+}
+#ifdef CONFIG_SPI_CMDDATA
+int pic31mx_spi1cmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cmd)
+{
+#warning "Missing logic"
+  return 0;
+}
+#endif
+#endif
+
+#ifdef CONFIG_PIC31MX_SPI3
+void  pic32mx_spi3select(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");
+#warning "Missing logic"
+}
+
+uint8_t pic32mx_spi3status(FAR struct spi_dev_s *dev, enum spi_dev_e devid)
+{
+  sspdbg("Returning nothing\n");
+#warning "Missing logic"
+  return 0;
+}
+#ifdef CONFIG_SPI_CMDDATA
+int pic32mx_spi3cmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cmd)
+{
+#warning "Missing logic"
+  return 0;
+}
+#endif
+#endif
+
+#ifdef CONFIG_PIC32MX_SPI4
+void  pic32mx_spi4select(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");
+#warning "Missing logic"
+}
+
+uint8_t pic32mx_spi4status(FAR struct spi_dev_s *dev, enum spi_dev_e devid)
+{
+  sspdbg("Returning nothing\n");
+#warning "Missing logic"
+  return 0;
+}
+#ifdef CONFIG_SPI_CMDDATA
+int pic32mx_spi4cmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cmd)
+{
+#warning "Missing logic"
+  return 0;
+}
+#endif
+#endif
+
+#endif /* CONFIG_PIC32MX_SPI1..4 */