configs/stm32f4discovery/src/stm32_mlx90614.c: Add MLX90614 support for the STM32F4Discovery board

configs/stm32f4discovery/src/Makefile

@@ -69,6 +69,10 @@ ifeq ($(CONFIG_SENSORS_BMP180),y)
 CSRCS += stm32_bmp180.c
 endif
 
+ifeq ($(CONFIG_SENSORS_MLX90614),y)
+  CSRCS += stm32_mlx90614.c
+endif
+
 ifeq ($(CONFIG_LCD_ST7567),y)
   CSRCS += stm32_st7567.c
 endif

configs/stm32f4discovery/src/stm32_bringup.c

@@ -232,6 +232,15 @@ int stm32_bringup(void)
     }
 #endif
 
+#ifdef CONFIG_SENSORS_MLX90614
+  ret = stm32_mlx90614init("/dev/therm0");
+  if (ret < 0)
+    {
+      syslog(LOG_ERR, "Failed to initialize MLX90614, error %d\n", ret);
+      return ret;
+    }
+#endif
+
 #ifdef CONFIG_SENSORS_QENCODER
   /* Initialize and register the qencoder driver */
 

configs/stm32f4discovery/src/stm32_mlx90614.c

@@ -0,0 +1,107 @@
+/************************************************************************************
+ * configs/stm32f4discovery/src/stm32_mlx90614.c
+ *
+ *   Copyright (C) 2016 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/i2c/i2c_master.h>
+#include <nuttx/sensors/mlx90614.h>
+
+#include "stm32.h"
+#include "stm32_i2c.h"
+#include "stm32f4discovery.h"
+
+#if defined(CONFIG_I2C) && defined(CONFIG_SENSORS_MLX90614)
+
+/************************************************************************************
+ * Pre-processor Definitions
+ ************************************************************************************/
+
+#define MLX90614_I2C_PORTNO 1    /* On I2C1 */
+
+#define MLX90614_ADDRESS    0x5a /* Default I2C Address, can be chanced in EEPROM */
+
+/************************************************************************************
+ * Public Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Name: stm32_mlx90614init
+ *
+ * Description:
+ *   Initialize and register the MLX90614 Infrared Thermometer.
+ *
+ * Input Parameters:
+ *   devpath - The full path to the driver to register. E.g., "/dev/therm0"
+ *
+ * Returned Value:
+ *   Zero (OK) on success; a negated errno value on failure.
+ *
+ ************************************************************************************/
+
+int stm32_mlx90614init(FAR const char *devpath)
+{
+  FAR struct i2c_master_s *i2c;
+  int ret;
+
+  sninfo("Initializing MLX90614!\n");
+
+  /* Initialize I2C */
+
+  i2c = stm32_i2cbus_initialize(MLX90614_I2C_PORTNO);
+
+  if (!i2c)
+    {
+      return -ENODEV;
+    }
+
+  /* Then register the light sensor */
+
+  ret = mlx90614_register(devpath, i2c, MLX90614_ADDRESS);
+  if (ret < 0)
+    {
+      snerr("ERROR: Error registering BM180\n");
+    }
+
+  return ret;
+}
+
+#endif /* CONFIG_I2C && CONFIG_SENSORS_MLX90614 && CONFIG_STM32_I2C1 */

configs/stm32f4discovery/src/stm32f4discovery.h

@@ -718,6 +718,19 @@ int stm32_max31855initialize(FAR const char *devpath, int bus,
                              uint16_t devid);
 #endif
 
+/***********************************************************************************
+ * Name: stm32_mlx90614init
+ *
+ * Description:
+ *   Called to configure an I2C and to register MLX90614 for the stm32f103-minimum
+ *   board.
+ *
+ ***********************************************************************************/
+
+#ifdef CONFIG_SENSORS_MLX90614
+int stm32_mlx90614init(FAR const char *devpath);
+#endif
+
 /****************************************************************************
  * Name: stm32_max6675initialize
  *