platform/mikroe-stm32f4/mikroe_configdata.c - nuttx-apps - Git at Google

 /****************************************************************************
  * 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 */
	/****************************************************************************
	* 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 */