configs/stm32f4discovery: Add board support to display ST7032i

configs/stm32f4discovery/src/Makefile

@@ -101,6 +101,10 @@ ifeq ($(CONFIG_LCD_MAX7219),y)
   CSRCS += stm32_max7219.c
 endif
 
+ifeq ($(CONFIG_LCD_ST7032),y)
+  CSRCS += stm32_st7032.c
+endif
+
 ifeq ($(CONFIG_PCA9635PW),y)
 CSRCS += stm32_pca9635.c
 endif

configs/stm32f4discovery/src/stm32_bringup.c

@@ -84,6 +84,59 @@
  * Public Functions
  ****************************************************************************/
 
+/****************************************************************************
+ * Name: stm32_i2c_register
+ *
+ * Description:
+ *   Register one I2C drivers for the I2C tool.
+ *
+ ****************************************************************************/
+
+#if defined(CONFIG_I2C) && defined(CONFIG_SYSTEM_I2CTOOL)
+static void stm32_i2c_register(int bus)
+{
+  FAR struct i2c_master_s *i2c;
+  int ret;
+
+  i2c = stm32_i2cbus_initialize(bus);
+  if (i2c == NULL)
+    {
+      syslog(LOG_ERR, "ERROR: Failed to get I2C%d interface\n", bus);
+    }
+  else
+    {
+      ret = i2c_register(i2c, bus);
+      if (ret < 0)
+        {
+          syslog(LOG_ERR, "ERROR: Failed to register I2C%d driver: %d\n",
+                 bus, ret);
+          stm32_i2cbus_uninitialize(i2c);
+        }
+    }
+}
+#endif
+
+/****************************************************************************
+ * Name: stm32_i2ctool
+ *
+ * Description:
+ *   Register I2C drivers for the I2C tool.
+ *
+ ****************************************************************************/
+
+#if defined(CONFIG_I2C) && defined(CONFIG_SYSTEM_I2CTOOL)
+static void stm32_i2ctool(void)
+{
+  stm32_i2c_register(1);
+#if 0
+  stm32_i2c_register(1);
+  stm32_i2c_register(2);
+#endif
+}
+#else
+#  define stm32_i2ctool()
+#endif
+
 /****************************************************************************
  * Name: stm32_bringup
  *
@@ -105,6 +158,10 @@ int stm32_bringup(void)
 #endif
   int ret = OK;
 
+#if defined(CONFIG_I2C) && defined(CONFIG_SYSTEM_I2CTOOL)
+  stm32_i2ctool();
+#endif
+
 #ifdef CONFIG_SENSORS_BMP180
   stm32_bmp180initialize("/dev/press0");
 #endif
@@ -131,6 +188,14 @@ int stm32_bringup(void)
     }
 #endif
 
+#ifdef CONFIG_LCD_ST7032
+  ret = stm32_st7032init("/dev/disp0");
+  if (ret < 0)
+    {
+      syslog(LOG_ERR, "ERROR: st7032_register failed: %d\n", ret);
+    }
+#endif
+
 #ifdef CONFIG_RGBLED
   /* Configure the RGB LED driver */
 
@@ -169,8 +234,8 @@ int stm32_bringup(void)
 #endif
 
 #ifdef HAVE_USBHOST
-  /* Initialize USB host operation.  stm32_usbhost_initialize() starts a thread
-   * will monitor for USB connection and disconnection events.
+  /* Initialize USB host operation.  stm32_usbhost_initialize() starts a
+   * thread will monitor for USB connection and disconnection events.
    */
 
   ret = stm32_usbhost_initialize();

configs/stm32f4discovery/src/stm32_st7032.c

@@ -0,0 +1,102 @@
+/****************************************************************************
+ * configs/stm32f4discovery/src/stm32_st7032.c
+ *
+ *   Copyright (C) 2018 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/lcd/st7032.h>
+
+#include "stm32.h"
+#include "stm32f4discovery.h"
+
+#if defined(CONFIG_I2C) && defined(CONFIG_STM32_I2C1) && \
+    defined(CONFIG_LCD_ST7032)
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+#define ST7032_I2C_PORTNO 1   /* On I2C1 */
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: stm32_st7032init
+ *
+ * Description:
+ *   Initialize the st7032 display
+ *
+ * Input Parameters:
+ *   devpath - The full path to the driver to register. E.g., "/dev/disp0"
+ *
+ * Returned Value:
+ *   Zero (OK) on success; a negated errno value on failure.
+ *
+ ****************************************************************************/
+
+int stm32_st7032init(FAR const char *devpath)
+{
+  FAR struct i2c_master_s *i2c;
+  int ret;
+
+  i2c = stm32_i2cbus_initialize(ST7032_I2C_PORTNO);
+  if (i2c == NULL)
+    {
+      return -ENODEV;
+    }
+
+  /* Register the ST7032 Driver at the specified location. */
+
+  ret = st7032_register(devpath, i2c);
+  if (ret < 0)
+    {
+      lcderr("ERROR: st7032_register(%s) failed: %d\n",
+             devpath, ret);
+      return ret;
+    }
+
+  return OK;
+}
+
+#endif /* CONFIG_I2C && CONFIG_LEDS_ST7032 */

configs/stm32f4discovery/src/stm32f4discovery.h

@@ -511,6 +511,16 @@ int nunchuck_initialize(FAR char *devname);
 int stm32_max7219init(FAR const char *devpath);
 #endif
 
+/****************************************************************************
+ * Name: stm32_st7032init
+ *
+ * Description:
+ *   Initialize and register the Sitronix ST7032i
+ *
+ ****************************************************************************/
+
+int stm32_st7032init(FAR const char *devpath);
+
 /****************************************************************************
  * Name: stm32_usbinitialize
  *