Viewtool STM32F107: Add support for an optional, add-on Freescale MPL115A baramoter. From Alan Carvalho de Assis

configs/viewtool-stm32f107/README.txt

@@ -28,6 +28,7 @@ Contents
   o USB Interface
   o microSD Card Interface
   o ViewTool DP83848 Ethernet Module
+  o Freescale MPL115A barometer sensor
   o LCD/Touchscreen Interface
   o Toolchains
     - NOTE about Windows native toolchains
@@ -398,6 +399,28 @@ ViewTool DP83848 Ethernet Module
       (also FTP, TFTP, WGET, NFS, etc. if you also have a mass storage
       device).
 
+Freescale MPL115A barometer sensor
+==================================
+
+  This board support package includes hooks that can be used to enable
+  testing of a Freescale MPL115A barometer sensor connected via SPI3 with
+  chip select on PB6,
+
+  Here are the configuration settings that would have to be included to
+  enabled support for the barometer:
+
+    System Type -> Peripherals
+      CONFIG_STM32_SPI3=y
+
+    Drivers -> SPI
+      CONFIG_SPI=y
+      CONFIG_SPI_EXCHANGE=y
+
+    Drivers -> Sensors
+      CONFIG_SENSORS=y
+      CONFIG_MPL115A=y
+      CONFIG_NSH_ARCHINIT=y
+
 LCD/Touchscreen Interface
 =========================
 

configs/viewtool-stm32f107/src/Makefile

@@ -62,6 +62,10 @@ CSRCS += stm32_usbdev.c
 endif
 endif
 
+ifeq ($(CONFIG_MPL115A),y)
+CSRCS += stm32_mpl115a.c
+endif
+
 ifeq ($(CONFIG_INPUT_ADS7843E),y) # F103
 CSRCS += stm32_touchscreen.c
 endif

configs/viewtool-stm32f107/src/stm32_mpl115a.c

@@ -0,0 +1,101 @@
+/************************************************************************************
+ * configs/greenbone/src/stm32_mpl115a.c
+ *
+ *   Copyright (C) 2015 Alan Carvalho de Assis. All rights reserved.
+ *   Author: Alan Carvalho de Assis <acassis@gmail.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 <errno.h>
+#include <debug.h>
+
+#include <nuttx/spi/spi.h>
+#include <nuttx/sensors/mpl115a.h>
+
+#include "stm32.h"
+#include "stm32_spi.h"
+#include "viewtool_stm32f107.h"
+
+#if defined(CONFIG_SPI) && defined(CONFIG_MPL115A) && defined(CONFIG_STM32_SPI3)
+
+/************************************************************************************
+ * Pre-processor Definitions
+ ************************************************************************************/
+
+#define MPL115A_SPI_PORTNO 3   /* On SPI3 */
+
+/************************************************************************************
+ * Public Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Name: stm32_mpl115ainitialize
+ *
+ * Description:
+ *   Initialize and register the MPL115A Pressure Sensor driver.
+ *
+ * Input parameters:
+ *   devpath - The full path to the driver to register. E.g., "/dev/press0"
+ *
+ * Returned Value:
+ *   Zero (OK) on success; a negated errno value on failure.
+ *
+ ************************************************************************************/
+
+int stm32_mpl115ainitialize(FAR const char *devpath)
+{
+  FAR struct spi_dev_s *spi;
+  int ret;
+
+  spi = up_spiinitialize(MPL115A_SPI_PORTNO);
+
+  if (!spi)
+    {
+      return -ENODEV;
+    }
+
+  /* Then register the barometer sensor */
+  
+  ret = mpl115a_register(devpath, spi);
+  if (ret < 0)
+    {
+      sndbg("Error registering MPL115A\n");
+    }
+
+  return ret;
+}
+
+#endif /* CONFIG_SPI && CONFIG_MPL115A && CONFIG_STM32_SPI3 */

configs/viewtool-stm32f107/src/stm32_nsh.c

@@ -62,7 +62,6 @@
 #    define CONFIG_NSH_MMCSDSLOTNO VIEWTOOL_MMCSD_SLOTNO
 #  endif
 #endif
-#endif
 
 /****************************************************************************
  * Public Functions
@@ -78,6 +77,10 @@
 
 int nsh_archinitialize(void)
 {
+#ifdef CONFIG_MPL115A
+  stm32_mpl115ainitialize("/dev/press");
+#endif
+
 #ifdef HAVE_MMCSD
   return stm32_sdinitialize(CONFIG_NSH_MMCSDSLOTNO);
 #else

configs/viewtool-stm32f107/src/stm32_spi.c

@@ -105,6 +105,12 @@ void weak_function stm32_spiinitialize(void)
 
   (void)stm32_configgpio(GPIO_LCDTP_CS);
 #endif
+
+#if defined(CONFIG_STM32_SPI3) && defined(CONFIG_MPL115A)
+  /* Configure the MPL115A SPI3 CS pin as an output */
+
+  (void)stm32_configgpio(GPIO_MPL115A_CS);
+#endif
 }
 
 /****************************************************************************

configs/viewtool-stm32f107/src/viewtool_stm32f107.h

@@ -276,6 +276,15 @@
 #define GPIO_LCDTP_CS     (GPIO_OUTPUT | GPIO_CNF_OUTPP | GPIO_MODE_50MHz | \
                            GPIO_OUTPUT_SET | GPIO_PORTC | GPIO_PIN4)
 
+/* Freescale MPL115A barometer (optional add-on)
+ *
+ * This board support logic includes support for a Freescale MPL115A barometer
+ * using SPI3 with chip select on PB6.
+ */
+
+#define GPIO_MPL115A_CS   (GPIO_OUTPUT | GPIO_CNF_OUTPP | GPIO_MODE_50MHz | \
+                           GPIO_OUTPUT_SET | GPIO_PORTB | GPIO_PIN6)
+
 /************************************************************************************
  * Public Functions
  ************************************************************************************/
@@ -326,5 +335,23 @@ int stm32_sdinitialize(int minor);
 
 void stm32_ledinit(void);
 
+/************************************************************************************
+ * Name: stm32_mpl115ainitialize
+ *
+ * Description:
+ *   Initialize and register the MPL115A Pressure Sensor driver.
+ *
+ * Input parameters:
+ *   devpath - The full path to the driver to register. E.g., "/dev/press0"
+ *
+ * Returned Value:
+ *   Zero (OK) on success; a negated errno value on failure.
+ *
+ ************************************************************************************/
+
+#if defined(CONFIG_SPI) && defined(CONFIG_MPL115A) && defined(CONFIG_STM32_SPI3)
+int stm32_mpl115ainitialize(FAR const char *devpath);
+#endif
+
 #endif  /* __ASSEMBLY__ */
 #endif /* __CONFIGS_VIEWTOOL_STM32F107_SRC_INTERNAL_H */