view Small_CPU/Src/RTE_FlashAccess.c @ 331:b4c578caaafb I2C_Improvment

Added plausibility check for pressure values In case of I2C communication problems at startup the dc jumped into dive mode with depth up to 300m. As no CRC is applied a bit flip may also occure during normal operation without detection => added a plausibility check if last measured value fits to the last measurements
author ideenmodellierer
date Wed, 17 Jul 2019 22:43:51 +0200
parents 5f11787b4f42
children 91a8f9893e68
line wrap: on
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/**
  ******************************************************************************
  * @file    RTE_FLashAccess.c based on BonexFlashAccess.c based on firmwareEraseProgram.v
  * @author  heinrichs weikamp gmbh
  * @version V0.0.1
  * @date    20-July-2016
  * @version V0.0.1
  * @since   20-July-2016
  * @brief   erase and program the STM32F4xx internal FLASH memory for compasss calib etc.
	*					 based on firmwareEraseProgram.c from OSTC4
  *
  @verbatim
  ==============================================================================
                        ##### How to use #####
  ==============================================================================
	
	4 x 32 Byte with first block can not be 0xFFFFFFFF



	@endverbatim
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; COPYRIGHT(c) 2015 heinrichs weikamp</center></h2>
  *
  ******************************************************************************
  */

/* Includes ------------------------------------------------------------------*/
#include "RTE_FlashAccess.h"
#include "stdio.h"

/** @addtogroup BONEXINFOSYSTEM
  * @{
  */

/* Exported variables --------------------------------------------------------*/

/* Private types -------------------------------------------------------------*/
/* taken from
 * C:\Users\hw\STM32Cube\Repository\STM32Cube_FW_F3_V1.2.0\Projects\STM32F3-Discovery\Examples\FLASH\FLASH_EraseProgram
 */
 
#define FLASH_SECTOR_SIZE_128KB	  (0x00020000)
#define FLASH_USER_START_ADDR			(ADDR_FLASH_SECTOR_7)   			/* Start @ of user Flash area */
#define FLASH_USER_END_ADDR   	 	(ADDR_FLASH_SECTOR_7 + FLASH_SECTOR_SIZE_128KB)   /* End @ of user Flash area */

/* Base address of the Flash pages */

#define ADDR_FLASH_SECTOR_0     ((uint32_t)0x08000000) /* Base @ of Sector 0, 16 Kbytes */
#define ADDR_FLASH_SECTOR_1     ((uint32_t)0x08004000) /* Base @ of Sector 1, 16 Kbytes */
#define ADDR_FLASH_SECTOR_2     ((uint32_t)0x08008000) /* Base @ of Sector 2, 16 Kbytes */
#define ADDR_FLASH_SECTOR_3     ((uint32_t)0x0800C000) /* Base @ of Sector 3, 16 Kbytes */
#define ADDR_FLASH_SECTOR_4     ((uint32_t)0x08010000) /* Base @ of Sector 4, 64 Kbytes */
#define ADDR_FLASH_SECTOR_5     ((uint32_t)0x08020000) /* Base @ of Sector 5, 128 Kbytes */
#define ADDR_FLASH_SECTOR_6     ((uint32_t)0x08040000) /* Base @ of Sector 6, 128 Kbytes */
#define ADDR_FLASH_SECTOR_7     ((uint32_t)0x08060000) /* Base @ of Sector 7, 128 Kbytes */




/* Private variables ---------------------------------------------------------*/

//static FLASH_EraseInitTypeDef EraseInitStruct; //Variable used for Erase procedure

uint32_t Address = 0;
uint32_t PageError = 0;
__IO uint32_t data32 = 0 , MemoryProgramStatus = 0;

/* Private function prototypes -----------------------------------------------*/
//uint8_t BFA_eraseSectors(uint32_t SectorAddress, uint32_t NbSectors);
//uint8_t BFA_eraseSectorsAll(void);
uint8_t BFA_FindLastDataBlockAndSetAddress(void);

/* Exported functions --------------------------------------------------------*/

uint8_t BFA_readLastDataBlock(uint32_t *dataArray4)
{
	uint8_t answer;
	
	answer = BFA_FindLastDataBlockAndSetAddress();
	if(answer != BFA_OK)
		return answer;

	dataArray4[0] = *(__IO uint32_t*)(Address +  0);
	dataArray4[1] = *(__IO uint32_t*)(Address +  4);
	dataArray4[2] = *(__IO uint32_t*)(Address +  8);
	dataArray4[3] = *(__IO uint32_t*)(Address + 12);
	return BFA_OK;
}


uint8_t BFA_writeDataBlock(const uint32_t *dataArray4)
{
	uint8_t answer;
	uint32_t dataTest[4];
	uint32_t StartAddress;

	answer = BFA_FindLastDataBlockAndSetAddress();
	Address = Address + 16;

	if((answer == BFA_EMPTY) || (Address >= FLASH_USER_END_ADDR) || (Address < FLASH_USER_START_ADDR))
		Address = FLASH_USER_START_ADDR;
			
	dataTest[0] = *(__IO uint32_t*)(Address +  0);
	dataTest[1] = *(__IO uint32_t*)(Address +  4);
	dataTest[2] = *(__IO uint32_t*)(Address +  8);
	dataTest[3] = *(__IO uint32_t*)(Address + 12);
	
	for(int i=0;i<4;i++)
	{
		if(dataTest[i] != 0xFFFFFFFF)
		{
			return 0;
//			answer = BFA_eraseSectorsAll();
//			break;
		}
		else 
			answer = BFA_OK;
	}

	// can I write?
	if(answer != BFA_OK)
		return answer;

	StartAddress = Address;
	HAL_FLASH_Unlock();
	for(int i=0;i<4;i++)
	{
		answer = HAL_FLASH_Program(TYPEPROGRAM_WORD, Address, dataArray4[i]);
		Address = Address + 4;
	}
	HAL_FLASH_Lock();
	Address = StartAddress; // back to start of this data set (for reading etc.)
	return answer;
}


/* Private functions ---------------------------------------------------------*/
/*
uint8_t BFA_eraseSectorsAll(void)
{
	return BFA_eraseSectors(FLASH_USER_START_ADDR, (FLASH_USER_END_ADDR - FLASH_USER_START_ADDR)/FLASH_SECTOR_SIZE_128KB);
}


uint8_t BFA_eraseSectors(uint32_t SectorAddress, uint32_t NbSectors)
{
	if((NbSectors > 1) || (SectorAddress != FLASH_USER_START_ADDR))
		return 0;
	
	uint8_t answer;
	uint32_t PageError = 0;

  HAL_FLASH_Unlock();

  EraseInitStruct.TypeErase = FLASH_TYPEERASE_SECTORS;//ERASE_SECTORS;
  EraseInitStruct.Sector = SectorAddress;
  EraseInitStruct.NbSectors = NbSectors;
  
	answer = HAL_FLASHEx_Erase(&EraseInitStruct, &PageError);
	
	HAL_FLASH_Lock();
	return answer;
}
*/

uint8_t BFA_FindLastDataBlockAndSetAddress(void)
{
	uint32_t StartAddress;

	// first part	from here to the end
	// there it should be, most likely at Address itself
	if(Address == 0)
		Address = FLASH_USER_END_ADDR - 16;			
	else
		Address &= 0xFFFFFFF0; // align with 16Byte
	
	StartAddress = Address;
  while (Address >= FLASH_USER_START_ADDR)
	{
		data32 = *(__IO uint32_t*)Address;
		if(data32 != 0xFFFFFFFF)
		{
			return BFA_OK;
		}
		Address = Address - 16;
	}

	// second part from the end to here
	if(StartAddress == FLASH_USER_END_ADDR - 16)
		return BFA_EMPTY;
	
	Address = FLASH_USER_END_ADDR - 16;			
  while (Address > StartAddress)
	{
		data32 = *(__IO uint32_t*)Address;
		if(data32 != 0xFFFFFFFF)
		{
			return BFA_OK;
		}
		Address = Address - 16;
	}

	// empty flash
	return BFA_EMPTY;
}
/**
  * @}
  */ 

/************************ (C) COPYRIGHT heinrichs weikamp *****END OF FILE****/