1 files changed, 232 insertions, 0 deletions
diff --git a/src/drivers/boards/px4cannode-v1/px4cannode_spi.c b/src/drivers/boards/px4cannode-v1/px4cannode_spi.c
new file mode 100644
index 000000000..0277098b9
--- /dev/null
+++ b/src/drivers/boards/px4cannode-v1/px4cannode_spi.c
@@ -0,0 +1,232 @@
+/****************************************************************************
+ *
+ *   Copyright (c) 2015 PX4 Development Team. All rights reserved.
+ *
+ * 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 PX4 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.
+ *
+ ****************************************************************************/
+
+/**
+ * @file px4cannode_led.c
+ *
+ * PX4FMU SPI backend.
+ */
+
+/************************************************************************************
+ * Included Files
+ ************************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <stdint.h>
+#include <stdbool.h>
+#include <errno.h>
+#include <debug.h>
+
+#include <nuttx/spi/spi.h>
+#include <arch/board/board.h>
+
+#include <nuttx/board.h>
+#include "chip.h"
+#include "stm32.h"
+#include "board_config.h"
+
+#if defined(CONFIG_STM32_SPI1) || defined(CONFIG_STM32_SPI2) || defined(CONFIG_STM32_SPI3)
+
+/************************************************************************************
+ * Definitions
+ ************************************************************************************/
+
+/* Enables debug output from this file (needs CONFIG_DEBUG too) */
+
+#undef SPI_DEBUG   /* Define to enable debug */
+#undef SPI_VERBOSE /* Define to enable verbose debug */
+
+#ifdef SPI_DEBUG
+#  define spidbg  lldbg
+#  ifdef SPI_VERBOSE
+#    define spivdbg lldbg
+#  else
+#    define spivdbg(x...)
+#  endif
+#else
+#  undef SPI_VERBOSE
+#  define spidbg(x...)
+#  define spivdbg(x...)
+#endif
+
+/************************************************************************************
+ * Private Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Public Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Name: stm32_spiinitialize
+ *
+ * Description:
+ *   Called to configure SPI chip select GPIO pins for the board.
+ *
+ ************************************************************************************/
+
+void weak_function board_spiinitialize(void)
+{
+  /* Setup CS */
+
+#ifdef CONFIG_STM32_SPI1
+  stm32_configgpio(USER_CSn);
+#endif
+
+#ifdef CONFIG_STM32_SPI2
+  stm32_configgpio(MMCSD_CSn);
+#endif
+}
+
+/****************************************************************************
+ * Name:  stm32_spi1/2/3select and stm32_spi1/2/3status
+ *
+ * Description:
+ *   The external functions, stm32_spi1/2/3select and stm32_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 STM32 logic.  To use this
+ *   common SPI logic on your board:
+ *
+ *   1. Provide logic in stm32_boardinitialize() to configure SPI chip
+ *      select pins.
+ *   2. Provide stm32_spi1/2/3select() and stm32_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_STM32_SPI1
+void stm32_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");
+  if (devid == SPIDEV_USER)
+    {
+      stm32_gpiowrite(USER_CSn, !selected);
+    }
+}
+
+uint8_t stm32_spi1status(FAR struct spi_dev_s *dev, enum spi_dev_e devid)
+{
+  return 0;
+}
+#endif
+
+#ifdef CONFIG_STM32_SPI2
+void stm32_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");
+#if defined(CONFIG_MMCSD)
+  if (devid == SPIDEV_MMCSD)
+    {
+      stm32_gpiowrite(MMCSD_CSn, !selected);
+    }
+#endif
+}
+
+uint8_t stm32_spi2status(FAR struct spi_dev_s *dev, enum spi_dev_e devid)
+{
+  /* No switch on SD card socket so assume it is here */
+
+  return SPI_STATUS_PRESENT;
+}
+#endif
+
+#ifdef CONFIG_STM32_SPI3
+void stm32_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");
+}
+
+uint8_t stm32_spi3status(FAR struct spi_dev_s *dev, enum spi_dev_e devid)
+{
+  return 0;
+}
+#endif
+
+/****************************************************************************
+ * Name: stm32_spi1cmddata
+ *
+ * Description:
+ *   Set or clear the SH1101A A0 or SD1306 D/C n bit to select data (true)
+ *   or command (false). This function must be provided by platform-specific
+ *   logic. This is an implementation of the cmddata method of the SPI
+ *   interface defined by struct spi_ops_s (see include/nuttx/spi/spi.h).
+ *
+ * Input Parameters:
+ *
+ *   spi - SPI device that controls the bus the device that requires the CMD/
+ *         DATA selection.
+ *   devid - If there are multiple devices on the bus, this selects which one
+ *         to select cmd or data.  NOTE:  This design restricts, for example,
+ *         one one SPI display per SPI bus.
+ *   cmd - true: select command; false: select data
+ *
+ * Returned Value:
+ *   None
+ *
+ ****************************************************************************/
+
+#ifdef CONFIG_SPI_CMDDATA
+#ifdef CONFIG_STM32_SPI1
+int stm32_spi1cmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cmd)
+{
+  return OK;
+}
+#endif
+
+#ifdef CONFIG_STM32_SPI2
+int stm32_spi2cmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cmd)
+{
+  return OK;
+}
+#endif
+
+#ifdef CONFIG_STM32_SPI3
+int stm32_spi3cmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cmd)
+{
+  return -ENODEV;
+}
+#endif
+#endif /* CONFIG_SPI_CMDDATA */
+
+#endif /* CONFIG_STM32_SPI1 || CONFIG_STM32_SPI2 */