321 lines
10 KiB
C
321 lines
10 KiB
C
/************************************************************************************
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* apps/platform/mikroe-stm32f4/mikroe_configdata.c
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*
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* Copyright (C) 2013 Ken Pettit. All rights reserved.
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* Author: Ken Pettit <pettitkd@gmail.com>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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************************************************************************************/
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/************************************************************************************
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* Included Files
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************************************************************************************/
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#include <nuttx/config.h>
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#include <stdio.h>
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#include <fcntl.h>
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#include <assert.h>
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#include <errno.h>
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#include <debug.h>
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#include <sys/ioctl.h>
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#include <apps/platform/configdata.h>
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#include <nuttx/fs/ioctl.h>
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#include <nuttx/configdata.h>
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#ifdef CONFIG_PLATFORM_CONFIGDATA
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/************************************************************************************
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* Definitions
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************************************************************************************/
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/************************************************************************************
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* Private Types
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************************************************************************************/
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/************************************************************************************
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* Private Function Prototypes
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************************************************************************************/
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/****************************************************************************
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* Private Data
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****************************************************************************/
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/************************************************************************************
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* Private Functions
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************************************************************************************/
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/************************************************************************************
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* Public Functions
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************************************************************************************/
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/****************************************************************************
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* Name: platform_setconfig
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*
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* Description:
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* Save platform-specific configuration data
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*
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* Input Parameter:
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* id - Defines the class of configuration data
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* instance - Defines which instance of configuration data. For example,
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* if a board has two networks, then there would be two MAC
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* addresses: instance 0 and instance 1
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* configdata - The new configuration data to be saved
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* datalen - The size of the configuration data in bytes.
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*
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* Returned Value:
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* This is an end-user function, so it follows the normal convention:
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* Returns the OK (zero) on success. On failure, it.returns -1 (ERROR) and
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* sets errno appropriately.
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*
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* Values for the errno would include:
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*
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* EINVAL - The configdata point is invalid
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* ENOSYS - The request ID/instance is not supported on this platform
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*
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* Other errors may be returned from lower level drivers on failure to
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* write to the underlying media (if applicable)
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*
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****************************************************************************/
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int platform_setconfig(enum config_data_e id, int instance,
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FAR const uint8_t *configdata, size_t datalen)
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{
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#ifdef CONFIG_MIKROE_STM32F4_CONFIGDATA_FS
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FILE* fd;
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#endif
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#if CONFIG_MIKROE_STM32F4_CONFIGDATA_PART
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struct config_data_s config;
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int ret;
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int fd;
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/* Try to open the /dev/config device file */
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if ((fd = open("/dev/config", O_RDOK)) == -1)
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{
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/* Error opening the config device */
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return -1;
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}
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/* Setup structure for the SETCONFIG ioctl */
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config.id = (enum config_data_e)id;
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config.instance = instance;
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config.configdata = (FAR uint8_t *) configdata;
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config.len = datalen;
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ret = ioctl(fd, CFGDIOC_SETCONFIG, (unsigned long) &config);
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close(fd);
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return ret;
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#else /* CONFIG_MIKROE_STM32F4_CONFIGDATA_PART */
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switch (id)
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{
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case CONFIGDATA_TSCALIBRATION:
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#ifdef CONFIG_MIKROE_STM32F4_CONFIGDATA_FS
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/* Save config data in a file on the filesystem. Try to open
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* the file. */
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if ((fd = fopen(CONFIG_MIKROE_STM32F4_CONFIGDATA_FILENAME, "w+")) == NULL)
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{
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/* Error opening the file */
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set_errno(ENOENT);
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return -1;
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}
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/* Write data to the file. For now, we only support one entry, but
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* may / will expand it later.
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*/
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fwrite(&id, sizeof(id), 1, fd);
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fwrite(&instance, sizeof(instance), 1, fd);
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fwrite(configdata, 1, datalen, fd);
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/* CLose the file and exit */
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fclose(fd);
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return OK;
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#elif CONFIG_MIKROE_STM32F4_CONFIGDATA_ROM
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/* We are reading from a read-only system, so nothing to do. */
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return OK;
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#else
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break;
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#endif /* CONFIG_MIKROE_STM32F4_CONFIGDATA_ROM */
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default:
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break;
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}
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set_errno(ENOSYS);
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return -1;
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#endif /* CONFIG_MIKROE_STM32F4_CONFIGDATA_PART */
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}
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/****************************************************************************
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* Name: platform_getconfig
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*
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* Description:
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* Get platform-specific configuration data
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*
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* Input Parameter:
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* id - Defines the class of configuration data
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* instance - Defines which instance of configuration data. For example,
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* if a board has two networks, then there would be two MAC
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* addresses: instance 0 and instance 1
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* configdata - The new configuration data to be saved
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* datalen - The size of the configuration data in bytes.
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*
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* Returned Value:
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* This is an end-user function, so it follows the normal convention:
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* Returns the OK (zero) on success. On failure, it.returns -1 (ERROR) and
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* sets errno appropriately.
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*
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* Values for the errno would include:
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*
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* EINVAL - The configdata point is invalid
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* ENOSYS - The request ID/instance is not supported on this platform
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*
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* Other errors may be returned from lower level drivers on failure to
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* write to the underlying media (if applicable)
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*
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****************************************************************************/
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int platform_getconfig(enum config_data_e id, int instance,
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FAR uint8_t *configdata, size_t datalen)
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{
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#ifdef CONFIG_MIKROE_STM32F4_CONFIGDATA_FS
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FILE* fd;
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size_t bytes;
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enum config_data_e saved_id;
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int saved_instance;
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#elif CONFIG_MIKROE_STM32F4_CONFIGDATA_ROM
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static const uint8_t touch_cal_data[] = {
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0x9a, 0x2f, 0x00, 0x00,
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0x40, 0xbc, 0x69, 0xfe, 0x70, 0x2e, 0x00,
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0x00, 0xb8, 0x2d, 0xdb, 0xff };
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#endif
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#if CONFIG_MIKROE_STM32F4_CONFIGDATA_PART
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struct config_data_s config;
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int ret;
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int fd;
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/* Try to open the /dev/config device file */
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if ((fd = open("/dev/config", O_RDOK)) == -1)
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{
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/* Error opening the config device */
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return -1;
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}
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/* Setup structure for the SETCONFIG ioctl */
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config.id = (enum config_data_e)id;
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config.instance = instance;
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config.configdata = configdata;
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config.len = datalen;
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ret = ioctl(fd, CFGDIOC_GETCONFIG, (unsigned long) &config);
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close(fd);
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return ret;
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#else /* CONFIG_MIKROE_STM32F4_CONFIGDATA_PART */
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switch (id)
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{
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case CONFIGDATA_TSCALIBRATION:
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#ifdef CONFIG_MIKROE_STM32F4_CONFIGDATA_FS
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/* Load config data fram a file on the filesystem. Try to open
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* the file. */
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if ((fd = fopen(CONFIG_MIKROE_STM32F4_CONFIGDATA_FILENAME, "r")) == NULL)
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{
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/* Error opening the file */
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set_errno(ENOENT);
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return -1;
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}
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/* Write data to the file. For now, we only support one entry, but
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* may / will expand it later.
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*/
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bytes = fread(&saved_id, sizeof(saved_id), 1, fd);
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bytes += fread(&saved_instance, sizeof(saved_instance), 1, fd);
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bytes += fread(configdata, 1, datalen, fd);
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if (bytes != sizeof(saved_id) + sizeof(saved_instance) + datalen)
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{
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/* Error! Not enough data in the file */
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set_errno(EINVAL);
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fclose(fd);
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return -1;
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}
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/* Close the file and exit */
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fclose(fd);
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return OK;
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/* Save config data in a file on the filesystem */
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return OK;
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#elif CONFIG_MIKROE_STM32F4_CONFIGDATA_ROM
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memcpy(configdata, touch_cal_data, datalen);
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return OK;
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#else
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break;
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#endif
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default:
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break;
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}
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set_errno(ENOSYS);
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return -1;
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#endif /* CONFIG_MIKROE_STM32F4_CONFIGDATA_PART */
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}
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#endif /* CONFIG_PLATFORM_CONFIGDATA */
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