1 files changed, 147 insertions, 0 deletions
diff --git a/os/hal/include/hal_eeprom.h b/os/hal/include/hal_eeprom.h
new file mode 100644
index 0000000..b0fd360
--- /dev/null
+++ b/os/hal/include/hal_eeprom.h
@@ -0,0 +1,147 @@
+/*
+  Copyright (c) 2013 Timon Wong
+
+  Permission is hereby granted, free of charge, to any person obtaining a copy
+  of this software and associated documentation files (the "Software"), to deal
+  in the Software without restriction, including without limitation the rights
+  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+  copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in all
+  copies or substantial portions of the Software.
+
+  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+  THE SOFTWARE.
+*/
+
+/*
+  Copyright 2012 Uladzimir Pylinski aka barthess.
+  You may use this work without restrictions, as long as this notice is included.
+  The work is provided "as is" without warranty of any kind, neither express nor implied.
+*/
+
+#ifndef __EEPROM_H__
+#define __EEPROM_H__
+
+#include "ch.h"
+#include "hal.h"
+
+#ifndef HAL_USE_EEPROM
+#define HAL_USE_EEPROM FALSE
+#endif
+
+#ifndef EEPROM_USE_EE25XX
+#define EEPROM_USE_EE25XX FALSE
+#endif
+
+#ifndef EEPROM_USE_EE24XX
+#define EEPROM_USE_EE24XX FALSE
+#endif
+
+#if HAL_USE_EEPROM
+
+#if EEPROM_USE_EE25XX && EEPROM_USE_EE24XX
+#define EEPROM_TABLE_SIZE 2
+#elif EEPROM_USE_EE25XX || EEPROM_USE_EE24XX
+#define EEPROM_TABLE_SIZE 1
+#else
+#error "No EEPROM device selected!"
+#endif
+
+#if EEPROM_USE_EE25XX && !HAL_USE_SPI
+#error "25xx enabled but SPI driver is disabled!"
+#endif
+
+#if EEPROM_USE_EE24XX && !HAL_USE_I2C
+#error "24xx enabled but I2C driver is disabled!"
+#endif
+
+#define _eeprom_file_config_data                                            \
+  /* Lower barrier of file in EEPROM memory array. */                       \
+  uint32_t        barrier_low;                                              \
+  /* Higher barrier of file in EEPROM memory array. */                      \
+  uint32_t        barrier_hi;                                               \
+  /* Size of memory array in bytes. */                                      \
+  uint32_t        size;                                                     \
+  /* Size of single page in bytes. */                                       \
+  uint16_t        pagesize;                                                 \
+  /* Time needed by IC for single byte/page writing. */                     \
+  systime_t       write_time;
+  
+typedef uint32_t fileoffset_t;
+
+typedef struct {
+  _eeprom_file_config_data
+} EepromFileConfig;
+
+/**
+ * @brief   @p EepromFileStream specific data.
+ */
+#define _eeprom_file_stream_data                                            \
+  _base_sequential_stream_data                                                    \
+  uint32_t                    errors;                                       \
+  uint32_t                    position;                                     \
+
+/**
+ * @extends BaseFileStreamVMT
+ *
+ * @brief   @p EepromFileStream virtual methods table.
+ */
+struct EepromFileStreamVMT {
+  _file_stream_methods
+};
+
+/**
+ * @extends BaseFileStream
+ *
+ * @brief   EEPROM file stream driver class.
+ * @details This class extends @p BaseFileStream by adding some fields.
+ */
+typedef struct {
+  /** @brief Virtual Methods Table.*/
+  const struct EepromFileStreamVMT *vmt;
+  _eeprom_file_stream_data
+  /** pointer to config object, must be overwritten by all derived classes.*/
+  const EepromFileConfig *cfg;
+} EepromFileStream;
+
+/**
+ * @brief   Low level device descriptor.
+ */
+typedef struct {
+  const uint8_t                       id;
+  const struct EepromFileStreamVMT   *efsvmt;
+} EepromDevice;
+
+const EepromDevice *EepromFindDevice(uint8_t id);
+
+EepromFileStream *EepromFileOpen(EepromFileStream *efs,
+                                 const EepromFileConfig *eepcfg,
+                                 const EepromDevice *eepdev);
+
+uint8_t  EepromReadByte(EepromFileStream *efs);
+uint16_t EepromReadHalfword(EepromFileStream *efs);
+uint32_t EepromReadWord(EepromFileStream *efs);
+size_t EepromWriteByte(EepromFileStream *efs, uint8_t data);
+size_t EepromWriteHalfword(EepromFileStream *efs, uint16_t data);
+size_t EepromWriteWord(EepromFileStream *efs, uint32_t data);
+
+msg_t eepfs_getsize(void *ip);
+msg_t eepfs_getposition(void *ip);
+msg_t eepfs_lseek(void *ip, fileoffset_t offset);
+msg_t eepfs_close(void *ip);
+msg_t eepfs_geterror(void *ip);
+msg_t eepfs_put(void *ip, uint8_t b);
+msg_t eepfs_get(void *ip);
+
+#include "ee24xx.h"
+#include "ee25xx.h"
+
+#endif /* #if defined(HAL_USE_EEPROM) && HAL_USE_EEPROM */
+#endif /* __EEPROM_H__ */