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/*
* SPI driver for spi memory devices
*/
/*
* Copyright (c) 2008 embedded brains GmbH. All rights reserved.
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*/
#ifndef _LIBCHIP_SPI_MEMDRV_H
#define _LIBCHIP_SPI_MEMDRV_H
#include <rtems/libi2c.h>
#ifdef __cplusplus
extern "C" {
#endif
/*=========================================================================*\
| Function: |
\*-------------------------------------------------------------------------*/
rtems_status_code spi_memdrv_write
(
/*-------------------------------------------------------------------------*\
| Purpose: |
| write a block of data to memory |
+---------------------------------------------------------------------------+
| Input Parameters: |
\*-------------------------------------------------------------------------*/
rtems_device_major_number major, /* major device number */
rtems_device_major_number minor, /* minor device number */
void *arg /* ptr to write argument struct */
);
/*-------------------------------------------------------------------------*\
| Return Value: |
| o = ok or error code |
\*=========================================================================*/
/*=========================================================================*\
| Function: |
\*-------------------------------------------------------------------------*/
rtems_status_code spi_memdrv_read
(
/*-------------------------------------------------------------------------*\
| Purpose: |
| read a block of data from memory |
+---------------------------------------------------------------------------+
| Input Parameters: |
\*-------------------------------------------------------------------------*/
rtems_device_major_number major, /* major device number */
rtems_device_major_number minor, /* minor device number */
void *arg /* ptr to read argument struct */
);
/*-------------------------------------------------------------------------*\
| Return Value: |
| o = ok or error code |
\*=========================================================================*/
typedef struct {
uint32_t baudrate; /* tfr rate, bits per second */
bool erase_before_program;
uint32_t empty_state; /* value of erased cells */
uint32_t page_size; /* programming page size in byte */
uint32_t sector_size; /* erase sector size in byte */
uint32_t mem_size; /* total capacity in byte */
} spi_memdrv_param_t;
typedef struct {
rtems_libi2c_drv_t libi2c_drv_entry; /* general i2c/spi params */
spi_memdrv_param_t spi_memdrv_param; /* private parameters */
} spi_memdrv_t;
extern rtems_driver_address_table spi_memdrv_rw_ops;
extern rtems_driver_address_table spi_memdrv_ro_ops;
#ifdef __cplusplus
}
#endif
#endif /* _LIBCHIP_SPI_MEMDRV_H */
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