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

 /************************************************************************************
  * apps/platform/mikroe-stm32f4/mikroe_configdata.c
  *
  *   Copyright (C) 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 <sys/ioctl.h>

 #include <apps/platform/configdata.h>
 #include <nuttx/fs/ioctl.h>
 #include <nuttx/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
 #if 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. */

         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_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;
     }


   set_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 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
 #if 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. */

         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_MIKROE_STM32F4_CONFIGDATA_PART */
 }

 #endif /* CONFIG_PLATFORM_CONFIGDATA */
	/************************************************************************************
	* apps/platform/mikroe-stm32f4/mikroe_configdata.c
	*
	* Copyright (C) 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 <sys/ioctl.h>

	#include <apps/platform/configdata.h>
	#include <nuttx/fs/ioctl.h>
	#include <nuttx/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
	#if 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. */

	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_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;
	}


	set_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 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
	#if 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. */

	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_MIKROE_STM32F4_CONFIGDATA_PART */
	}

	#endif /* CONFIG_PLATFORM_CONFIGDATA */