/****************************************************************************
* apps/platform/mikroe-stm32f4/mikroe_configdata.c
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdio.h>
#include <fcntl.h>
#include <assert.h>
#include <errno.h>
#include <debug.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include "platform/configdata.h"
#include <nuttx/fs/ioctl.h>
#include <nuttx/mtd/configdata.h>
#ifdef CONFIG_PLATFORM_CONFIGDATA
/****************************************************************************
* 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
#ifdef CONFIG_MIKROE_STM32F4_CONFIGDATA_PART
struct config_data_s config;
int ret;
int fd;
/* Try to open the /dev/config device file */
if ((fd = open("/dev/config", O_RDOK)) == -1)
{
/* Error opening the config device */
return -1;
}
/* Setup structure for the SETCONFIG ioctl */
config.id = (enum config_data_e)id;
config.instance = instance;
config.configdata = (FAR uint8_t *)configdata;
config.len = datalen;
ret = ioctl(fd, CFGDIOC_SETCONFIG, (unsigned long)&config);
close(fd);
return ret;
#else /* CONFIG_MIKROE_STM32F4_CONFIGDATA_PART */
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.
*/
fd = fopen(CONFIG_MIKROE_STM32F4_CONFIGDATA_FILENAME, "w+");
if (fd == NULL)
{
/* Error opening the file */
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 defined(CONFIG_MIKROE_STM32F4_CONFIGDATA_ROM)
/* We are reading from a read-only system, so nothing to do. */
return OK;
#else
break;
#endif /* CONFIG_MIKROE_STM32F4_CONFIGDATA_ROM */
default:
break;
}
errno = ENOSYS;
return -1;
#endif /* CONFIG_MIKROE_STM32F4_CONFIGDATA_PART */
}
/****************************************************************************
* 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 defined(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
#ifdef CONFIG_MIKROE_STM32F4_CONFIGDATA_PART
struct config_data_s config;
int ret;
int fd;
/* Try to open the /dev/config device file */
if ((fd = open("/dev/config", O_RDOK)) == -1)
{
/* Error opening the config device */
return -1;
}
/* Setup structure for the SETCONFIG ioctl */
config.id = (enum config_data_e)id;
config.instance = instance;
config.configdata = configdata;
config.len = datalen;
ret = ioctl(fd, CFGDIOC_GETCONFIG, (unsigned long)&config);
close(fd);
return ret;
#else /* CONFIG_MIKROE_STM32F4_CONFIGDATA_PART */
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.
*/
fd = fopen(CONFIG_MIKROE_STM32F4_CONFIGDATA_FILENAME, "r");
if (fd == NULL)
{
/* Error opening the file */
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 */
errno = EINVAL;
fclose(fd);
return -1;
}
/* Close the file and exit */
fclose(fd);
return OK;
#elif defined(CONFIG_MIKROE_STM32F4_CONFIGDATA_ROM)
memcpy(configdata, touch_cal_data, datalen);
return OK;
#else
break;
#endif
default:
break;
}
errno = ENOSYS;
return -1;
#endif /* CONFIG_MIKROE_STM32F4_CONFIGDATA_PART */
}
#endif /* CONFIG_PLATFORM_CONFIGDATA */