configs/nucleo-l432kc/src/stm32_at45db.c: Forgot to add file with commit 578114a74f

2018-10-26 11:50:29 -06:00 · 2018-10-26 11:50:29 -06:00 · f4cb7dafc3
commit f4cb7dafc3
parent 851d683571
1 changed files with 138 additions and 0 deletions
--- a/configs/nucleo-l432kc/src/stm32_at45db.c
+++ b/configs/nucleo-l432kc/src/stm32_at45db.c
@ -0,0 +1,138 @@
+/************************************************************************************
+ * config/nucleo-l432kc/src/stm32_at45.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/spi/spi.h>
+#include <nuttx/mtd/mtd.h>
+#include <nuttx/fs/nxffs.h>
+
+#include "stm32l4_spi.h"
+
+/************************************************************************************
+ * Pre-processor Definitions
+ ************************************************************************************/
+
+#ifndef CONFIG_STM32L4_SPI1
+#  error "AT45DB driver requires CONFIG_STM32_SPI1 to be enabled"
+#endif
+
+/************************************************************************************
+* Private Definitions
+************************************************************************************/
+
+static const int AT45DB_SPI_PORT = 1; /* AT45DB is connected to SPI1 port */
+
+/************************************************************************************
+ * Public Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Name: stm32_at45dbinitialize
+ *
+ * Description:
+ *   Initialize and configure the AT45DB SPI Serial Flash Memory
+ *
+ ************************************************************************************/
+
+int stm32_at45dbinitialize(int minor)
+{
+  FAR struct spi_dev_s *spi;
+  FAR struct mtd_dev_s *mtd;
+  static bool initialized = false;
+  int ret;
+
+  /* Have we already initialized? */
+
+  if (!initialized)
+    {
+      /* No.. Get the SPI bus driver */
+
+      finfo("INFO: Initializing AT45DB\n");
+
+      spi = stm32l4_spibus_initialize(AT45DB_SPI_PORT);
+      if (spi == NULL)
+        {
+          ferr("ERROR: Failed to initialize SPI port %d\n", AT45DB_SPI_PORT);
+          return -ENODEV;
+        }
+      
+      mtd = at45db_initialize(spi);
+      if (mtd == NULL)
+        {
+          ferr("ERROR: Failed to initialize AT45DB\n");
+          return -ENODEV;
+        }
+
+#if defined(CONFIG_FS_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/at45db */
+
+      finfo("Mount the NXFFS file system at /dev/at45db\n");
+      ret = mount(NULL, "/mnt/at45db", "nxffs", 0, NULL);
+      if (ret < 0)
+        {
+          ferr("ERROR: Failed to mount the NXFFS volume: %d\n", errno);
+          return ret;
+        }
+#endif
+
+      /* Now we are initialized */
+
+      initialized = true;    
+    }
+
+  return OK;
+}