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nuttx-apps/platform/mikroe-stm32f4/mikroe_configdata.c

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/************************************************************************************
* apps/platform/mikroe-stm32f4/mikroe_configdata.c
*
* Copyright (C) 2012-2013 Ken Pettit. All rights reserved.
* Author: Ken Pettit <pettitkd@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 <stdio.h>
#include <fcntl.h>
#include <assert.h>
#include <errno.h>
#include <debug.h>
#include <apps/platform/configdata.h>
#ifdef CONFIG_PLATFORM_CONFIGDATA
/************************************************************************************
* Definitions
************************************************************************************/
/************************************************************************************
* Private Types
************************************************************************************/
/************************************************************************************
* Private Function Prototypes
************************************************************************************/
/****************************************************************************
* Private Data
****************************************************************************/
/************************************************************************************
* Private Functions
************************************************************************************/
/************************************************************************************
* Public Functions
************************************************************************************/
/****************************************************************************
* Name: platform_setconfig
*
* Description:
* Save platform-specific configuration data
*
* Input Parameter:
* id - Defines the class of configuration data
* instance - Defines which instance of configuration data. For example,
* if a board has two networks, then there would be two MAC
* addresses: instance 0 and instance 1
* configdata - The new configuration data to be saved
* datalen - The size of the configuration data in bytes.
*
* Returned Value:
* This is an end-user function, so it follows the normal convention:
* Returns the OK (zero) on success. On failure, it.returns -1 (ERROR) and
* sets errno appropriately.
*
* Values for the errno would include:
*
* EINVAL - The configdata point is invalid
* ENOSYS - The request ID/instance is not supported on this platform
*
* Other errors may be returned from lower level drivers on failure to
* write to the underlying media (if applicable)
*
****************************************************************************/
int platform_setconfig(enum config_data_e id, int instance,
FAR const uint8_t *configdata, size_t datalen)
{
#ifdef CONFIG_MIKROE_STM32F4_CONFIGDATA_FS
FILE* fd;
#endif
switch (id)
{
case CONFIGDATA_TSCALIBRATION:
#ifdef CONFIG_MIKROE_STM32F4_CONFIGDATA_FS
/* Save config data in a file on the filesystem. Try to open
* the file. */
if ((fd = fopen(CONFIG_MIKROE_STM32F4_CONFIGDATA_FILENAME, "w+")) == NULL)
{
/* Error opening the file */
set_errno(ENOENT);
return -1;
}
/* Write data to the file. For now, we only support one entry, but
* may / will expand it later.
*/
fwrite(&id, sizeof(id), 1, fd);
fwrite(&instance, sizeof(instance), 1, fd);
fwrite(configdata, 1, datalen, fd);
/* CLose the file and exit */
fclose(fd);
return OK;
#elif CONFIG_MIKROE_STM32F4_CONFIGDATA_PART
# error This configuration not supported yet!
#elif CONFIG_MIKROE_STM32F4_CONFIGDATA_ROM
/* We are reading from a read-only system, so nothing to do. */
return OK;
#else
break;
#endif
default:
break;
}
set_errno(ENOSYS);
return -1;
}
/****************************************************************************
* Name: platform_getconfig
*
* Description:
* Get platform-specific configuration data
*
* Input Parameter:
* id - Defines the class of configuration data
* instance - Defines which instance of configuration data. For example,
* if a board has two networks, then there would be two MAC
* addresses: instance 0 and instance 1
* configdata - The new configuration data to be saved
* datalen - The size of the configuration data in bytes.
*
* Returned Value:
* This is an end-user function, so it follows the normal convention:
* Returns the OK (zero) on success. On failure, it.returns -1 (ERROR) and
* sets errno appropriately.
*
* Values for the errno would include:
*
* EINVAL - The configdata point is invalid
* ENOSYS - The request ID/instance is not supported on this platform
*
* Other errors may be returned from lower level drivers on failure to
* write to the underlying media (if applicable)
*
****************************************************************************/
int platform_getconfig(enum config_data_e id, int instance,
FAR uint8_t *configdata, size_t datalen)
{
#ifdef CONFIG_MIKROE_STM32F4_CONFIGDATA_FS
FILE* fd;
size_t bytes;
enum config_data_e saved_id;
int saved_instance;
#elif CONFIG_MIKROE_STM32F4_CONFIGDATA_ROM
static const uint8_t touch_cal_data[] = {
0x9a, 0x2f, 0x00, 0x00,
0x40, 0xbc, 0x69, 0xfe, 0x70, 0x2e, 0x00,
0x00, 0xb8, 0x2d, 0xdb, 0xff };
#endif
switch (id)
{
case CONFIGDATA_TSCALIBRATION:
#ifdef CONFIG_MIKROE_STM32F4_CONFIGDATA_FS
/* Load config data fram a file on the filesystem. Try to open
* the file. */
if ((fd = fopen(CONFIG_MIKROE_STM32F4_CONFIGDATA_FILENAME, "r")) == NULL)
{
/* Error opening the file */
set_errno(ENOENT);
return -1;
}
/* Write data to the file. For now, we only support one entry, but
* may / will expand it later.
*/
bytes = fread(&saved_id, sizeof(saved_id), 1, fd);
bytes += fread(&saved_instance, sizeof(saved_instance), 1, fd);
bytes += fread(configdata, 1, datalen, fd);
if (bytes != sizeof(saved_id) + sizeof(saved_instance) + datalen)
{
/* Error! Not enough data in the file */
set_errno(EINVAL);
fclose(fd);
return -1;
}
/* Close the file and exit */
fclose(fd);
return OK;
/* Save config data in a file on the filesystem */
return OK;
#elif CONFIG_MIKROE_STM32F4_CONFIGDATA_ROM
memcpy(configdata, touch_cal_data, datalen);
return OK;
#else
break;
#endif
default:
break;
}
set_errno(ENOSYS);
return -1;
}
#endif /* CONFIG_PLATFORM_CONFIGDATA */
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