configs/stm32f103-minimum: Add file that was included in the last patch.

configs/flipnclick-sam3x/README.txt

@@ -38,8 +38,6 @@ STATUS
 
        And it says that the content of the FLASH is not good.
 
-
-
 Buttons and LEDs
 ================
 
@@ -496,5 +494,5 @@ Configuration sub-directories
        Binary Formats:
          CONFIG_BUILTIN=y                    : Enable support for built-in programs
 
-       Applicaton Configuration:
+       Application Configuration:
          CONFIG_NSH_BUILTIN_APPS=y           : Enable starting apps from NSH command line

configs/stm32f103-minimum/src/stm32_at24.c

@@ -0,0 +1,146 @@
+/****************************************************************************
+ * config/stm32f103-minimum/src/stm32_at24.c
+ *
+ *   Copyright (C) 2018 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 <sys/mount.h>
+
+#include <stdbool.h>
+#include <stdio.h>
+#include <errno.h>
+#include <debug.h>
+
+#include <nuttx/i2c/i2c_master.h>
+#include <nuttx/mtd/mtd.h>
+#include <nuttx/fs/nxffs.h>
+
+#include "stm32_i2c.h"
+#include "stm32f103_minimum.h"
+
+#ifdef HAVE_AT24
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: stm32_at24_automount
+ *
+ * Description:
+ *   Initialize and configure the AT24 serial EEPROM
+ *
+ ****************************************************************************/
+
+int stm32_at24_automount(int minor)
+{
+  FAR struct i2c_master_s *i2c;
+  FAR struct mtd_dev_s *mtd;
+  static bool initialized = false;
+  int ret;
+
+  /* Have we already initialized? */
+
+  if (!initialized)
+    {
+      /* No.. Get the I2C bus driver */
+
+      finfo("Initialize I2C%d\n", AT24_I2C_BUS);
+      i2c = stm32_i2cbus_initialize(AT24_I2C_BUS);
+      if (!i2c)
+        {
+          ferr("ERROR: Failed to initialize I2C%d\n", AT24_I2C_BUS);
+          return -ENODEV;
+        }
+
+      /* Now bind the I2C interface to the AT24 I2C EEPROM driver */
+
+      finfo("Bind the AT24 EEPROM driver to I2C%d\n", AT24_I2C_BUS);
+      mtd = at24c_initialize(i2c);
+      if (!mtd)
+        {
+          ferr("ERROR: Failed to bind TWI%d to the AT24 EEPROM driver\n",
+               AT24_I2C_BUS);
+          return -ENODEV;
+        }
+
+#if defined(CONFIG_STM32F103MINIMUM_AT24_FTL)
+      /* And finally, use the FTL layer to wrap the MTD driver as a block driver */
+
+      finfo("Initialize the FTL layer to create /dev/mtdblock%d\n", AT24_MINOR);
+      ret = ftl_initialize(AT24_MINOR, mtd);
+      if (ret < 0)
+        {
+          ferr("ERROR: Failed to initialize the FTL layer: %d\n", ret);
+          return ret;
+        }
+
+#elif defined(CONFIG_STM32F103MINIMUM_AT24_NXFFS)
+      /* Initialize to provide NXFFS on the MTD interface */
+
+      finfo("Initialize the NXFFS file system\n");
+      ret = nxffs_initialize(mtd);
+      if (ret < 0)
+        {
+          ferr("ERROR: NXFFS initialization failed: %d\n", ret);
+          return ret;
+        }
+
+      /* Mount the file system at /mnt/at24 */
+
+      finfo("Mount the NXFFS file system at /dev/at24\n");
+      ret = mount(NULL, "/mnt/at24", "nxffs", 0, NULL);
+      if (ret < 0)
+        {
+          ferr("ERROR: Failed to mount the NXFFS volume: %d\n", errno);
+          return ret;
+        }
+#endif
+      /* Now we are initializeed */
+
+      initialized = true;
+    }
+
+  return OK;
+}
+
+#endif /* HAVE_AT24 */