Tweak STM32F4/7 eeprom emulation (#14563)
This commit is contained in:
Scott Lahteine
GitHub
parent
056efaba91
commit
f990ebfb09
@ -8,8 +8,8 @@
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******************************************************************************
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* @attention
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*
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* <h2><center>© Copyright © 2016 STMicroelectronics International N.V.
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* All rights reserved.</center></h2>
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* Copyright © 2016 STMicroelectronics International N.V.
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* All rights reserved.
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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 are met:
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@ -47,14 +47,11 @@
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/** @addtogroup EEPROM_Emulation
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* @{
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*/
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#if defined(STM32GENERIC) && (defined(STM32F4))
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#if defined(STM32GENERIC) && defined(STM32F4)
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/* Includes ------------------------------------------------------------------*/
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#include "eeprom_emul.h"
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/* Private typedef -----------------------------------------------------------*/
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/* Private define ------------------------------------------------------------*/
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/* Private macro -------------------------------------------------------------*/
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/* Private variables ---------------------------------------------------------*/
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/* Global variable used to store variable value in read sequence */
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@ -79,76 +76,66 @@ static uint16_t EE_VerifyPageFullyErased(uint32_t Address);
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* - FLASH_COMPLETE: on success
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*/
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uint16_t EE_Initialize(void) {
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uint16_t PageStatus0 = 6, PageStatus1 = 6;
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uint16_t VarIdx = 0;
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uint16_t EepromStatus = 0, ReadStatus = 0;
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int16_t x = -1;
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HAL_StatusTypeDef FlashStatus;
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uint32_t SectorError = 0;
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FLASH_EraseInitTypeDef pEraseInit;
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/* Get Page0 status */
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PageStatus0 = (*(__IO uint16_t*)PAGE0_BASE_ADDRESS);
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/* Get Page1 status */
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/* Get Page0 and Page1 status */
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uint16_t PageStatus0 = (*(__IO uint16_t*)PAGE0_BASE_ADDRESS),
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PageStatus1 = (*(__IO uint16_t*)PAGE1_BASE_ADDRESS);
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FLASH_EraseInitTypeDef pEraseInit;
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pEraseInit.TypeErase = TYPEERASE_SECTORS;
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pEraseInit.Sector = PAGE0_ID;
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pEraseInit.NbSectors = 1;
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pEraseInit.VoltageRange = VOLTAGE_RANGE;
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/* Check for invalid header states and repair if necessary */
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uint32_t SectorError;
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switch (PageStatus0) {
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case ERASED:
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if (PageStatus1 == VALID_PAGE) { /* Page0 erased, Page1 valid */
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/* Erase Page0 */
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if (!EE_VerifyPageFullyErased(PAGE0_BASE_ADDRESS)) {
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FlashStatus = HAL_FLASHEx_Erase(&pEraseInit, &SectorError);
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/* If erase operation was failed, a Flash error code is returned */
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if (FlashStatus != HAL_OK) return FlashStatus;
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/* As the last operation, simply return the result */
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return HAL_FLASHEx_Erase(&pEraseInit, &SectorError);
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}
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}
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else if (PageStatus1 == RECEIVE_DATA) { /* Page0 erased, Page1 receive */
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/* Erase Page0 */
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if (!EE_VerifyPageFullyErased(PAGE0_BASE_ADDRESS)) {
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FlashStatus = HAL_FLASHEx_Erase(&pEraseInit, &SectorError);
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HAL_StatusTypeDef fStat = HAL_FLASHEx_Erase(&pEraseInit, &SectorError);
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/* If erase operation was failed, a Flash error code is returned */
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if (FlashStatus != HAL_OK) return FlashStatus;
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if (fStat != HAL_OK) return fStat;
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}
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/* Mark Page1 as valid */
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FlashStatus = HAL_FLASH_Program(TYPEPROGRAM_HALFWORD, PAGE1_BASE_ADDRESS, VALID_PAGE);
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/* If program operation was failed, a Flash error code is returned */
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if (FlashStatus != HAL_OK) return FlashStatus;
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/* As the last operation, simply return the result */
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return HAL_FLASH_Program(TYPEPROGRAM_HALFWORD, PAGE1_BASE_ADDRESS, VALID_PAGE);
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}
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else { /* First EEPROM access (Page0&1 are erased) or invalid state -> format EEPROM */
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/* Erase both Page0 and Page1 and set Page0 as valid page */
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FlashStatus = EE_Format();
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/* If erase/program operation was failed, a Flash error code is returned */
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if (FlashStatus != HAL_OK) return FlashStatus;
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/* As the last operation, simply return the result */
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return EE_Format();
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}
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break;
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case RECEIVE_DATA:
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if (PageStatus1 == VALID_PAGE) { /* Page0 receive, Page1 valid */
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/* Transfer data from Page1 to Page0 */
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for (VarIdx = 0; VarIdx < NB_OF_VAR; VarIdx++) {
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int16_t x = -1;
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for (uint16_t VarIdx = 0; VarIdx < NB_OF_VAR; VarIdx++) {
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if (( *(__IO uint16_t*)(PAGE0_BASE_ADDRESS + 6)) == VirtAddVarTab[VarIdx])
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x = VarIdx;
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if (VarIdx != x) {
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/* Read the last variables' updates */
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ReadStatus = EE_ReadVariable(VirtAddVarTab[VarIdx], &DataVar);
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uint16_t ReadStatus = EE_ReadVariable(VirtAddVarTab[VarIdx], &DataVar);
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/* In case variable corresponding to the virtual address was found */
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if (ReadStatus != 0x1) {
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/* Transfer the variable to the Page0 */
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EepromStatus = EE_VerifyPageFullWriteVariable(VirtAddVarTab[VarIdx], DataVar);
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uint16_t EepromStatus = EE_VerifyPageFullWriteVariable(VirtAddVarTab[VarIdx], DataVar);
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/* If program operation was failed, a Flash error code is returned */
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if (EepromStatus != HAL_OK) return EepromStatus;
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}
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}
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}
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/* Mark Page0 as valid */
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FlashStatus = HAL_FLASH_Program(TYPEPROGRAM_HALFWORD, PAGE0_BASE_ADDRESS, VALID_PAGE);
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HAL_StatusTypeDef FlashStatus = HAL_FLASH_Program(TYPEPROGRAM_HALFWORD, PAGE0_BASE_ADDRESS, VALID_PAGE);
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/* If program operation was failed, a Flash error code is returned */
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if (FlashStatus != HAL_OK) return FlashStatus;
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pEraseInit.Sector = PAGE1_ID;
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@ -156,9 +143,8 @@ uint16_t EE_Initialize(void) {
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pEraseInit.VoltageRange = VOLTAGE_RANGE;
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/* Erase Page1 */
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if (!EE_VerifyPageFullyErased(PAGE1_BASE_ADDRESS)) {
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FlashStatus = HAL_FLASHEx_Erase(&pEraseInit, &SectorError);
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/* If erase operation was failed, a Flash error code is returned */
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if (FlashStatus != HAL_OK) return FlashStatus;
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/* As the last operation, simply return the result */
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return HAL_FLASHEx_Erase(&pEraseInit, &SectorError);
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}
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}
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else if (PageStatus1 == ERASED) { /* Page0 receive, Page1 erased */
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@ -167,20 +153,18 @@ uint16_t EE_Initialize(void) {
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pEraseInit.VoltageRange = VOLTAGE_RANGE;
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/* Erase Page1 */
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if (!EE_VerifyPageFullyErased(PAGE1_BASE_ADDRESS)) {
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FlashStatus = HAL_FLASHEx_Erase(&pEraseInit, &SectorError);
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HAL_StatusTypeDef fStat = HAL_FLASHEx_Erase(&pEraseInit, &SectorError);
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/* If erase operation was failed, a Flash error code is returned */
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if (FlashStatus != HAL_OK) return FlashStatus;
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if (fStat != HAL_OK) return fStat;
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}
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/* Mark Page0 as valid */
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FlashStatus = HAL_FLASH_Program(TYPEPROGRAM_HALFWORD, PAGE0_BASE_ADDRESS, VALID_PAGE);
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/* If program operation was failed, a Flash error code is returned */
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if (FlashStatus != HAL_OK) return FlashStatus;
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/* As the last operation, simply return the result */
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return HAL_FLASH_Program(TYPEPROGRAM_HALFWORD, PAGE0_BASE_ADDRESS, VALID_PAGE);
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}
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else { /* Invalid state -> format eeprom */
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/* Erase both Page0 and Page1 and set Page0 as valid page */
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FlashStatus = EE_Format();
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/* If erase/program operation was failed, a Flash error code is returned */
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if (FlashStatus != HAL_OK) return FlashStatus;
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/* As the last operation, simply return the result */
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return EE_Format();
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}
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break;
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@ -204,17 +188,18 @@ uint16_t EE_Initialize(void) {
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}
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else { /* Page0 valid, Page1 receive */
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/* Transfer data from Page0 to Page1 */
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for (VarIdx = 0; VarIdx < NB_OF_VAR; VarIdx++) {
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int16_t x = -1;
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for (uint16_t VarIdx = 0; VarIdx < NB_OF_VAR; VarIdx++) {
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if ((*(__IO uint16_t*)(PAGE1_BASE_ADDRESS + 6)) == VirtAddVarTab[VarIdx])
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x = VarIdx;
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if (VarIdx != x) {
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/* Read the last variables' updates */
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ReadStatus = EE_ReadVariable(VirtAddVarTab[VarIdx], &DataVar);
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uint16_t ReadStatus = EE_ReadVariable(VirtAddVarTab[VarIdx], &DataVar);
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/* In case variable corresponding to the virtual address was found */
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if (ReadStatus != 0x1) {
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/* Transfer the variable to the Page1 */
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EepromStatus = EE_VerifyPageFullWriteVariable(VirtAddVarTab[VarIdx], DataVar);
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uint16_t EepromStatus = EE_VerifyPageFullWriteVariable(VirtAddVarTab[VarIdx], DataVar);
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/* If program operation was failed, a Flash error code is returned */
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if (EepromStatus != HAL_OK) return EepromStatus;
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}
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@ -229,19 +214,16 @@ uint16_t EE_Initialize(void) {
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pEraseInit.VoltageRange = VOLTAGE_RANGE;
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/* Erase Page0 */
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if (!EE_VerifyPageFullyErased(PAGE0_BASE_ADDRESS)) {
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FlashStatus = HAL_FLASHEx_Erase(&pEraseInit, &SectorError);
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/* If erase operation was failed, a Flash error code is returned */
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if (FlashStatus != HAL_OK) return FlashStatus;
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/* As the last operation, simply return the result */
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return HAL_FLASHEx_Erase(&pEraseInit, &SectorError);
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}
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}
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break;
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default: /* Any other state -> format eeprom */
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/* Erase both Page0 and Page1 and set Page0 as valid page */
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FlashStatus = EE_Format();
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/* If erase/program operation was failed, a Flash error code is returned */
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if (FlashStatus != HAL_OK) return FlashStatus;
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break;
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/* As the last operation, simply return the result */
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return EE_Format();
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}
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return HAL_OK;
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@ -259,11 +241,10 @@ uint16_t EE_Initialize(void) {
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*/
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uint16_t EE_VerifyPageFullyErased(uint32_t Address) {
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uint32_t ReadStatus = 1;
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uint16_t AddressValue = 0x5555;
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/* Check each active page address starting from end */
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while (Address <= PAGE0_END_ADDRESS) {
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/* Get the current location content to be compared with virtual address */
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AddressValue = (*(__IO uint16_t*)Address);
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uint16_t AddressValue = (*(__IO uint16_t*)Address);
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/* Compare the read address with the virtual address */
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if (AddressValue != ERASED) {
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/* In case variable value is read, reset ReadStatus flag */
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@ -288,26 +269,22 @@ uint16_t EE_VerifyPageFullyErased(uint32_t Address) {
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* - NO_VALID_PAGE: if no valid page was found.
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*/
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uint16_t EE_ReadVariable(uint16_t VirtAddress, uint16_t* Data) {
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uint16_t ValidPage = PAGE0;
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uint16_t AddressValue = 0x5555, ReadStatus = 1;
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uint32_t Address = EEPROM_START_ADDRESS, PageStartAddress = EEPROM_START_ADDRESS;
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uint16_t ReadStatus = 1;
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/* Get active Page for read operation */
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ValidPage = EE_FindValidPage(READ_FROM_VALID_PAGE);
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uint16_t ValidPage = EE_FindValidPage(READ_FROM_VALID_PAGE);
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/* Check if there is no valid page */
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if (ValidPage == NO_VALID_PAGE) return NO_VALID_PAGE;
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/* Get the valid Page start Address */
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PageStartAddress = (uint32_t)(EEPROM_START_ADDRESS + (uint32_t)(ValidPage * PAGE_SIZE));
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/* Get the valid Page end Address */
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Address = (uint32_t)((EEPROM_START_ADDRESS - 2) + (uint32_t)((1 + ValidPage) * PAGE_SIZE));
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/* Get the valid Page start and end Addresses */
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uint32_t PageStartAddress = uint32_t(EEPROM_START_ADDRESS) + uint32_t(ValidPage * (PAGE_SIZE)),
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Address = PageStartAddress + PAGE_SIZE - 2;
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/* Check each active page address starting from end */
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while (Address > (PageStartAddress + 2)) {
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while (Address > PageStartAddress + 2) {
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/* Get the current location content to be compared with virtual address */
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AddressValue = (*(__IO uint16_t*)Address);
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uint16_t AddressValue = (*(__IO uint16_t*)Address);
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/* Compare the read address with the virtual address */
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if (AddressValue == VirtAddress) {
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@ -353,16 +330,17 @@ uint16_t EE_WriteVariable(uint16_t VirtAddress, uint16_t Data) {
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* EEPROM formating
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*/
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static HAL_StatusTypeDef EE_Format(void) {
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HAL_StatusTypeDef FlashStatus = HAL_OK;
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uint32_t SectorError = 0;
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FLASH_EraseInitTypeDef pEraseInit;
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pEraseInit.TypeErase = FLASH_TYPEERASE_SECTORS;
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pEraseInit.Sector = PAGE0_ID;
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pEraseInit.NbSectors = 1;
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pEraseInit.VoltageRange = VOLTAGE_RANGE;
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HAL_StatusTypeDef FlashStatus; // = HAL_OK
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/* Erase Page0 */
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if (!EE_VerifyPageFullyErased(PAGE0_BASE_ADDRESS)) {
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uint32_t SectorError;
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FlashStatus = HAL_FLASHEx_Erase(&pEraseInit, &SectorError);
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/* If erase operation was failed, a Flash error code is returned */
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if (FlashStatus != HAL_OK) return FlashStatus;
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@ -375,9 +353,9 @@ static HAL_StatusTypeDef EE_Format(void) {
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pEraseInit.Sector = PAGE1_ID;
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/* Erase Page1 */
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if (!EE_VerifyPageFullyErased(PAGE1_BASE_ADDRESS)) {
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FlashStatus = HAL_FLASHEx_Erase(&pEraseInit, &SectorError);
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/* If erase operation was failed, a Flash error code is returned */
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if (FlashStatus != HAL_OK) return FlashStatus;
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/* As the last operation, just return the result code */
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uint32_t SectorError;
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return HAL_FLASHEx_Erase(&pEraseInit, &SectorError);
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}
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return HAL_OK;
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@ -393,12 +371,8 @@ static HAL_StatusTypeDef EE_Format(void) {
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* of no valid page was found
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*/
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static uint16_t EE_FindValidPage(uint8_t Operation) {
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uint16_t PageStatus0 = 6, PageStatus1 = 6;
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/* Get Page0 actual status */
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PageStatus0 = (*(__IO uint16_t*)PAGE0_BASE_ADDRESS);
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/* Get Page1 actual status */
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/* Get Page0 and Page1 actual status */
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uint16_t PageStatus0 = (*(__IO uint16_t*)PAGE0_BASE_ADDRESS),
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PageStatus1 = (*(__IO uint16_t*)PAGE1_BASE_ADDRESS);
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/* Write or read operation */
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@ -406,13 +380,11 @@ static uint16_t EE_FindValidPage(uint8_t Operation) {
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case WRITE_IN_VALID_PAGE: /* ---- Write operation ---- */
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if (PageStatus1 == VALID_PAGE) {
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/* Page0 receiving data */
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if (PageStatus0 == RECEIVE_DATA) return PAGE0; /* Page0 valid */
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else return PAGE1; /* Page1 valid */
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return (PageStatus0 == RECEIVE_DATA) ? PAGE0 : PAGE1;
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}
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else if (PageStatus0 == VALID_PAGE) {
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/* Page1 receiving data */
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if (PageStatus1 == RECEIVE_DATA) return PAGE1; /* Page1 valid */
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else return PAGE0; /* Page0 valid */
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return (PageStatus1 == RECEIVE_DATA) ? PAGE1 : PAGE0;
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}
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else
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return NO_VALID_PAGE; /* No valid Page */
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@ -441,34 +413,26 @@ static uint16_t EE_FindValidPage(uint8_t Operation) {
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* - Flash error code: on write Flash error
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*/
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static uint16_t EE_VerifyPageFullWriteVariable(uint16_t VirtAddress, uint16_t Data) {
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HAL_StatusTypeDef FlashStatus = HAL_OK;
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uint16_t ValidPage = PAGE0;
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uint32_t Address = EEPROM_START_ADDRESS, PageEndAddress = EEPROM_START_ADDRESS+PAGE_SIZE;
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/* Get valid Page for write operation */
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ValidPage = EE_FindValidPage(WRITE_IN_VALID_PAGE);
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uint16_t ValidPage = EE_FindValidPage(WRITE_IN_VALID_PAGE);
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/* Check if there is no valid page */
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if (ValidPage == NO_VALID_PAGE) return NO_VALID_PAGE;
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/* Get the valid Page start Address */
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Address = (uint32_t)(EEPROM_START_ADDRESS + (uint32_t)(ValidPage * PAGE_SIZE));
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/* Get the valid Page end Address */
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PageEndAddress = (uint32_t)((EEPROM_START_ADDRESS - 1) + (uint32_t)((ValidPage + 1) * PAGE_SIZE));
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/* Get the valid Page start and end Addresses */
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uint32_t Address = uint32_t(EEPROM_START_ADDRESS) + uint32_t(ValidPage * (PAGE_SIZE)),
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PageEndAddress = Address + PAGE_SIZE - 1;
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/* Check each active page address starting from begining */
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while (Address < PageEndAddress) {
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/* Verify if Address and Address+2 contents are 0xFFFFFFFF */
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if ((*(__IO uint32_t*)Address) == 0xFFFFFFFF) {
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/* Set variable data */
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FlashStatus = HAL_FLASH_Program(TYPEPROGRAM_HALFWORD, Address, Data);
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HAL_StatusTypeDef FlashStatus = HAL_FLASH_Program(TYPEPROGRAM_HALFWORD, Address, Data);
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/* If program operation was failed, a Flash error code is returned */
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if (FlashStatus != HAL_OK) return FlashStatus;
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/* Set variable virtual address */
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FlashStatus = HAL_FLASH_Program(TYPEPROGRAM_HALFWORD, Address + 2, VirtAddress);
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/* Return program operation status */
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return FlashStatus;
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/* Set variable virtual address, return status */
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return HAL_FLASH_Program(TYPEPROGRAM_HALFWORD, Address + 2, VirtAddress);
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}
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else /* Next address location */
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Address += 4;
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@ -490,16 +454,10 @@ static uint16_t EE_VerifyPageFullWriteVariable(uint16_t VirtAddress, uint16_t Da
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* - Flash error code: on write Flash error
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*/
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static uint16_t EE_PageTransfer(uint16_t VirtAddress, uint16_t Data) {
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HAL_StatusTypeDef FlashStatus = HAL_OK;
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uint32_t NewPageAddress = EEPROM_START_ADDRESS;
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uint16_t OldPageId=0;
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uint16_t ValidPage = PAGE0, VarIdx = 0;
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uint16_t EepromStatus = 0, ReadStatus = 0;
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uint32_t SectorError = 0;
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FLASH_EraseInitTypeDef pEraseInit;
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/* Get active Page for read operation */
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ValidPage = EE_FindValidPage(READ_FROM_VALID_PAGE);
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uint16_t ValidPage = EE_FindValidPage(READ_FROM_VALID_PAGE);
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uint32_t NewPageAddress = EEPROM_START_ADDRESS;
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uint16_t OldPageId = 0;
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if (ValidPage == PAGE1) { /* Page1 valid */
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/* New page address where variable will be moved to */
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@ -517,20 +475,20 @@ static uint16_t EE_PageTransfer(uint16_t VirtAddress, uint16_t Data) {
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return NO_VALID_PAGE; /* No valid Page */
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/* Set the new Page status to RECEIVE_DATA status */
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FlashStatus = HAL_FLASH_Program(TYPEPROGRAM_HALFWORD, NewPageAddress, RECEIVE_DATA);
|
||||
HAL_StatusTypeDef FlashStatus = HAL_FLASH_Program(TYPEPROGRAM_HALFWORD, NewPageAddress, RECEIVE_DATA);
|
||||
/* If program operation was failed, a Flash error code is returned */
|
||||
if (FlashStatus != HAL_OK) return FlashStatus;
|
||||
|
||||
/* Write the variable passed as parameter in the new active page */
|
||||
EepromStatus = EE_VerifyPageFullWriteVariable(VirtAddress, Data);
|
||||
uint16_t EepromStatus = EE_VerifyPageFullWriteVariable(VirtAddress, Data);
|
||||
/* If program operation was failed, a Flash error code is returned */
|
||||
if (EepromStatus != HAL_OK) return EepromStatus;
|
||||
|
||||
/* Transfer process: transfer variables from old to the new active page */
|
||||
for (VarIdx = 0; VarIdx < NB_OF_VAR; VarIdx++) {
|
||||
for (uint16_t VarIdx = 0; VarIdx < NB_OF_VAR; VarIdx++) {
|
||||
if (VirtAddVarTab[VarIdx] != VirtAddress) { /* Check each variable except the one passed as parameter */
|
||||
/* Read the other last variable updates */
|
||||
ReadStatus = EE_ReadVariable(VirtAddVarTab[VarIdx], &DataVar);
|
||||
uint16_t ReadStatus = EE_ReadVariable(VirtAddVarTab[VarIdx], &DataVar);
|
||||
/* In case variable corresponding to the virtual address was found */
|
||||
if (ReadStatus != 0x1) {
|
||||
/* Transfer the variable to the new active page */
|
||||
@ -541,26 +499,24 @@ static uint16_t EE_PageTransfer(uint16_t VirtAddress, uint16_t Data) {
|
||||
}
|
||||
}
|
||||
|
||||
FLASH_EraseInitTypeDef pEraseInit;
|
||||
pEraseInit.TypeErase = TYPEERASE_SECTORS;
|
||||
pEraseInit.Sector = OldPageId;
|
||||
pEraseInit.NbSectors = 1;
|
||||
pEraseInit.VoltageRange = VOLTAGE_RANGE;
|
||||
|
||||
/* Erase the old Page: Set old Page status to ERASED status */
|
||||
uint32_t SectorError;
|
||||
FlashStatus = HAL_FLASHEx_Erase(&pEraseInit, &SectorError);
|
||||
/* If erase operation was failed, a Flash error code is returned */
|
||||
if (FlashStatus != HAL_OK) return FlashStatus;
|
||||
|
||||
/* Set new Page status to VALID_PAGE status */
|
||||
FlashStatus = HAL_FLASH_Program(TYPEPROGRAM_HALFWORD, NewPageAddress, VALID_PAGE);
|
||||
/* If program operation was failed, a Flash error code is returned */
|
||||
if (FlashStatus != HAL_OK) return FlashStatus;
|
||||
|
||||
/* Return last operation flash status */
|
||||
return FlashStatus;
|
||||
/* As the last operation, just return the result code */
|
||||
return HAL_FLASH_Program(TYPEPROGRAM_HALFWORD, NewPageAddress, VALID_PAGE);
|
||||
}
|
||||
|
||||
#endif // STM32F4 || STM32F4xx
|
||||
#endif // STM32GENERIC && STM32F4
|
||||
|
||||
/**
|
||||
* @}
|
||||
|
||||
@ -53,55 +53,53 @@
|
||||
|
||||
/* Exported constants --------------------------------------------------------*/
|
||||
/* EEPROM emulation firmware error codes */
|
||||
#define EE_OK (uint32_t)HAL_OK
|
||||
#define EE_ERROR (uint32_t)HAL_ERROR
|
||||
#define EE_BUSY (uint32_t)HAL_BUSY
|
||||
#define EE_TIMEOUT (uint32_t)HAL_TIMEOUT
|
||||
#define EE_OK uint32_t(HAL_OK)
|
||||
#define EE_ERROR uint32_t(HAL_ERROR)
|
||||
#define EE_BUSY uint32_t(HAL_BUSY)
|
||||
#define EE_TIMEOUT uint32_t(HAL_TIMEOUT)
|
||||
|
||||
/* Define the size of the sectors to be used */
|
||||
#define PAGE_SIZE (uint32_t)0x4000 /* Page size = 16KByte */
|
||||
#define PAGE_SIZE uint32_t(0x4000) /* Page size = 16KByte */
|
||||
|
||||
/* Device voltage range supposed to be [2.7V to 3.6V], the operation will
|
||||
be done by word */
|
||||
#define VOLTAGE_RANGE (uint8_t)VOLTAGE_RANGE_3
|
||||
#define VOLTAGE_RANGE uint8_t(VOLTAGE_RANGE_3)
|
||||
|
||||
/* EEPROM start address in Flash */
|
||||
#define EEPROM_START_ADDRESS ((uint32_t)0x08078000) /* EEPROM emulation start address:
|
||||
#define EEPROM_START_ADDRESS uint32_t(0x08078000) /* EEPROM emulation start address:
|
||||
after 480KByte of used Flash memory */
|
||||
|
||||
/* Pages 0 and 1 base and end addresses */
|
||||
#define PAGE0_BASE_ADDRESS ((uint32_t)(EEPROM_START_ADDRESS + 0x0000))
|
||||
#define PAGE0_END_ADDRESS ((uint32_t)(EEPROM_START_ADDRESS + PAGE_SIZE - 1))
|
||||
#define PAGE0_BASE_ADDRESS uint32_t(EEPROM_START_ADDRESS + 0x0000)
|
||||
#define PAGE0_END_ADDRESS uint32_t(EEPROM_START_ADDRESS + PAGE_SIZE - 1)
|
||||
#define PAGE0_ID FLASH_SECTOR_1
|
||||
|
||||
#define PAGE1_BASE_ADDRESS ((uint32_t)(EEPROM_START_ADDRESS + 0x4000))
|
||||
#define PAGE1_END_ADDRESS ((uint32_t)(EEPROM_START_ADDRESS + 2 * (PAGE_SIZE) - 1))
|
||||
#define PAGE1_BASE_ADDRESS uint32_t(EEPROM_START_ADDRESS + 0x4000)
|
||||
#define PAGE1_END_ADDRESS uint32_t(EEPROM_START_ADDRESS + 2 * (PAGE_SIZE) - 1)
|
||||
#define PAGE1_ID FLASH_SECTOR_2
|
||||
|
||||
/* Used Flash pages for EEPROM emulation */
|
||||
#define PAGE0 ((uint16_t)0x0000)
|
||||
#define PAGE1 ((uint16_t)0x0001) /* Page nb between PAGE0_BASE_ADDRESS & PAGE1_BASE_ADDRESS*/
|
||||
#define PAGE0 uint16_t(0x0000)
|
||||
#define PAGE1 uint16_t(0x0001) /* Page nb between PAGE0_BASE_ADDRESS & PAGE1_BASE_ADDRESS*/
|
||||
|
||||
/* No valid page define */
|
||||
#define NO_VALID_PAGE ((uint16_t)0x00AB)
|
||||
#define NO_VALID_PAGE uint16_t(0x00AB)
|
||||
|
||||
/* Page status definitions */
|
||||
#define ERASED ((uint16_t)0xFFFF) /* Page is empty */
|
||||
#define RECEIVE_DATA ((uint16_t)0xEEEE) /* Page is marked to receive data */
|
||||
#define VALID_PAGE ((uint16_t)0x0000) /* Page containing valid data */
|
||||
#define ERASED uint16_t(0xFFFF) /* Page is empty */
|
||||
#define RECEIVE_DATA uint16_t(0xEEEE) /* Page is marked to receive data */
|
||||
#define VALID_PAGE uint16_t(0x0000) /* Page containing valid data */
|
||||
|
||||
/* Valid pages in read and write defines */
|
||||
#define READ_FROM_VALID_PAGE ((uint8_t)0x00)
|
||||
#define WRITE_IN_VALID_PAGE ((uint8_t)0x01)
|
||||
#define READ_FROM_VALID_PAGE uint8_t(0x00)
|
||||
#define WRITE_IN_VALID_PAGE uint8_t(0x01)
|
||||
|
||||
/* Page full define */
|
||||
#define PAGE_FULL ((uint8_t)0x80)
|
||||
#define PAGE_FULL uint8_t(0x80)
|
||||
|
||||
/* Variables' number */
|
||||
#define NB_OF_VAR ((uint16_t)4096)
|
||||
#define NB_OF_VAR uint16_t(4096)
|
||||
|
||||
/* Exported types ------------------------------------------------------------*/
|
||||
/* Exported macro ------------------------------------------------------------*/
|
||||
/* Exported functions ------------------------------------------------------- */
|
||||
uint16_t EE_Initialize(void);
|
||||
uint16_t EE_ReadVariable(uint16_t VirtAddress, uint16_t* Data);
|
||||
|
||||
@ -17,13 +17,13 @@
|
||||
*
|
||||
*/
|
||||
|
||||
#if defined(STM32GENERIC) && (defined(STM32F4))
|
||||
|
||||
/**
|
||||
* Description: functions for I2C connected external EEPROM.
|
||||
* Description: Functions for a Flash emulated EEPROM
|
||||
* Not platform dependent.
|
||||
*/
|
||||
|
||||
#if defined(STM32GENERIC) && defined(STM32F4)
|
||||
|
||||
#include "../../inc/MarlinConfig.h"
|
||||
|
||||
#if ENABLED(EEPROM_SETTINGS) && NONE(I2C_EEPROM, SPI_EEPROM)
|
||||
@ -69,37 +69,34 @@ void eeprom_init() {
|
||||
}
|
||||
|
||||
void eeprom_write_byte(uint8_t *pos, unsigned char value) {
|
||||
uint16_t eeprom_address = (unsigned) pos;
|
||||
uint16_t eeprom_address = unsigned(pos);
|
||||
|
||||
eeprom_init();
|
||||
|
||||
HAL_FLASH_Unlock();
|
||||
__HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_EOP | FLASH_FLAG_OPERR | FLASH_FLAG_WRPERR |FLASH_FLAG_PGAERR | FLASH_FLAG_PGPERR | FLASH_FLAG_PGSERR);
|
||||
|
||||
if (EE_WriteVariable(eeprom_address, (uint16_t) value) != EE_OK)
|
||||
if (EE_WriteVariable(eeprom_address, uint16_t(value)) != EE_OK)
|
||||
for (;;) HAL_Delay(1); // Spin forever until watchdog reset
|
||||
|
||||
HAL_FLASH_Lock();
|
||||
}
|
||||
|
||||
uint8_t eeprom_read_byte(uint8_t *pos) {
|
||||
uint16_t data = 0xFF;
|
||||
uint16_t eeprom_address = (unsigned)pos;
|
||||
|
||||
eeprom_init();
|
||||
|
||||
if (EE_ReadVariable(eeprom_address, &data) != EE_OK) {
|
||||
return (unsigned char)data;
|
||||
}
|
||||
return (unsigned char)data;
|
||||
uint16_t data = 0xFF;
|
||||
uint16_t eeprom_address = unsigned(pos);
|
||||
(void)EE_ReadVariable(eeprom_address, &data); // Data unchanged on error
|
||||
|
||||
return uint8_t(data);
|
||||
}
|
||||
|
||||
void eeprom_read_block(void *__dst, const void *__src, size_t __n) {
|
||||
uint16_t data = 0xFF;
|
||||
uint16_t eeprom_address = (unsigned) __src;
|
||||
|
||||
eeprom_init();
|
||||
|
||||
uint16_t data = 0xFF;
|
||||
uint16_t eeprom_address = (unsigned)__src;
|
||||
for (uint8_t c = 0; c < __n; c++) {
|
||||
EE_ReadVariable(eeprom_address+c, &data);
|
||||
*((uint8_t*)__dst + c) = data;
|
||||
|
||||
@ -8,8 +8,8 @@
|
||||
******************************************************************************
|
||||
* @attention
|
||||
*
|
||||
* <h2><center>© Copyright © 2016 STMicroelectronics International N.V.
|
||||
* All rights reserved.</center></h2>
|
||||
* Copyright © 2016 STMicroelectronics International N.V.
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted, provided that the following conditions are met:
|
||||
@ -52,9 +52,6 @@
|
||||
/* Includes ------------------------------------------------------------------*/
|
||||
#include "eeprom_emul.h"
|
||||
|
||||
/* Private typedef -----------------------------------------------------------*/
|
||||
/* Private define ------------------------------------------------------------*/
|
||||
/* Private macro -------------------------------------------------------------*/
|
||||
/* Private variables ---------------------------------------------------------*/
|
||||
|
||||
/* Global variable used to store variable value in read sequence */
|
||||
@ -79,76 +76,66 @@ static uint16_t EE_VerifyPageFullyErased(uint32_t Address);
|
||||
* - FLASH_COMPLETE: on success
|
||||
*/
|
||||
uint16_t EE_Initialize(void) {
|
||||
uint16_t PageStatus0 = 6, PageStatus1 = 6;
|
||||
uint16_t VarIdx = 0;
|
||||
uint16_t EepromStatus = 0, ReadStatus = 0;
|
||||
int16_t x = -1;
|
||||
HAL_StatusTypeDef FlashStatus;
|
||||
uint32_t SectorError = 0;
|
||||
FLASH_EraseInitTypeDef pEraseInit;
|
||||
|
||||
|
||||
/* Get Page0 status */
|
||||
PageStatus0 = (*(__IO uint16_t*)PAGE0_BASE_ADDRESS);
|
||||
/* Get Page1 status */
|
||||
/* Get Page0 and Page1 status */
|
||||
uint16_t PageStatus0 = (*(__IO uint16_t*)PAGE0_BASE_ADDRESS),
|
||||
PageStatus1 = (*(__IO uint16_t*)PAGE1_BASE_ADDRESS);
|
||||
|
||||
FLASH_EraseInitTypeDef pEraseInit;
|
||||
pEraseInit.TypeErase = TYPEERASE_SECTORS;
|
||||
pEraseInit.Sector = PAGE0_ID;
|
||||
pEraseInit.NbSectors = 1;
|
||||
pEraseInit.VoltageRange = VOLTAGE_RANGE;
|
||||
|
||||
/* Check for invalid header states and repair if necessary */
|
||||
uint32_t SectorError;
|
||||
switch (PageStatus0) {
|
||||
case ERASED:
|
||||
if (PageStatus1 == VALID_PAGE) { /* Page0 erased, Page1 valid */
|
||||
/* Erase Page0 */
|
||||
if (!EE_VerifyPageFullyErased(PAGE0_BASE_ADDRESS)) {
|
||||
FlashStatus = HAL_FLASHEx_Erase(&pEraseInit, &SectorError);
|
||||
/* If erase operation was failed, a Flash error code is returned */
|
||||
if (FlashStatus != HAL_OK) return FlashStatus;
|
||||
/* As the last operation, simply return the result */
|
||||
return HAL_FLASHEx_Erase(&pEraseInit, &SectorError);
|
||||
}
|
||||
}
|
||||
else if (PageStatus1 == RECEIVE_DATA) { /* Page0 erased, Page1 receive */
|
||||
/* Erase Page0 */
|
||||
if (!EE_VerifyPageFullyErased(PAGE0_BASE_ADDRESS)) {
|
||||
FlashStatus = HAL_FLASHEx_Erase(&pEraseInit, &SectorError);
|
||||
HAL_StatusTypeDef fStat = HAL_FLASHEx_Erase(&pEraseInit, &SectorError);
|
||||
/* If erase operation was failed, a Flash error code is returned */
|
||||
if (FlashStatus != HAL_OK) return FlashStatus;
|
||||
if (fStat != HAL_OK) return fStat;
|
||||
}
|
||||
/* Mark Page1 as valid */
|
||||
FlashStatus = HAL_FLASH_Program(TYPEPROGRAM_HALFWORD, PAGE1_BASE_ADDRESS, VALID_PAGE);
|
||||
/* If program operation was failed, a Flash error code is returned */
|
||||
if (FlashStatus != HAL_OK) return FlashStatus;
|
||||
/* As the last operation, simply return the result */
|
||||
return HAL_FLASH_Program(TYPEPROGRAM_HALFWORD, PAGE1_BASE_ADDRESS, VALID_PAGE);
|
||||
}
|
||||
else { /* First EEPROM access (Page0&1 are erased) or invalid state -> format EEPROM */
|
||||
/* Erase both Page0 and Page1 and set Page0 as valid page */
|
||||
FlashStatus = EE_Format();
|
||||
/* If erase/program operation was failed, a Flash error code is returned */
|
||||
if (FlashStatus != HAL_OK) return FlashStatus;
|
||||
/* As the last operation, simply return the result */
|
||||
return EE_Format();
|
||||
}
|
||||
break;
|
||||
|
||||
case RECEIVE_DATA:
|
||||
if (PageStatus1 == VALID_PAGE) { /* Page0 receive, Page1 valid */
|
||||
/* Transfer data from Page1 to Page0 */
|
||||
for (VarIdx = 0; VarIdx < NB_OF_VAR; VarIdx++) {
|
||||
int16_t x = -1;
|
||||
for (uint16_t VarIdx = 0; VarIdx < NB_OF_VAR; VarIdx++) {
|
||||
if (( *(__IO uint16_t*)(PAGE0_BASE_ADDRESS + 6)) == VirtAddVarTab[VarIdx])
|
||||
x = VarIdx;
|
||||
if (VarIdx != x) {
|
||||
/* Read the last variables' updates */
|
||||
ReadStatus = EE_ReadVariable(VirtAddVarTab[VarIdx], &DataVar);
|
||||
uint16_t ReadStatus = EE_ReadVariable(VirtAddVarTab[VarIdx], &DataVar);
|
||||
/* In case variable corresponding to the virtual address was found */
|
||||
if (ReadStatus != 0x1) {
|
||||
/* Transfer the variable to the Page0 */
|
||||
EepromStatus = EE_VerifyPageFullWriteVariable(VirtAddVarTab[VarIdx], DataVar);
|
||||
uint16_t EepromStatus = EE_VerifyPageFullWriteVariable(VirtAddVarTab[VarIdx], DataVar);
|
||||
/* If program operation was failed, a Flash error code is returned */
|
||||
if (EepromStatus != HAL_OK) return EepromStatus;
|
||||
}
|
||||
}
|
||||
}
|
||||
/* Mark Page0 as valid */
|
||||
FlashStatus = HAL_FLASH_Program(TYPEPROGRAM_HALFWORD, PAGE0_BASE_ADDRESS, VALID_PAGE);
|
||||
HAL_StatusTypeDef FlashStatus = HAL_FLASH_Program(TYPEPROGRAM_HALFWORD, PAGE0_BASE_ADDRESS, VALID_PAGE);
|
||||
/* If program operation was failed, a Flash error code is returned */
|
||||
if (FlashStatus != HAL_OK) return FlashStatus;
|
||||
pEraseInit.Sector = PAGE1_ID;
|
||||
@ -156,9 +143,8 @@ uint16_t EE_Initialize(void) {
|
||||
pEraseInit.VoltageRange = VOLTAGE_RANGE;
|
||||
/* Erase Page1 */
|
||||
if (!EE_VerifyPageFullyErased(PAGE1_BASE_ADDRESS)) {
|
||||
FlashStatus = HAL_FLASHEx_Erase(&pEraseInit, &SectorError);
|
||||
/* If erase operation was failed, a Flash error code is returned */
|
||||
if (FlashStatus != HAL_OK) return FlashStatus;
|
||||
/* As the last operation, simply return the result */
|
||||
return HAL_FLASHEx_Erase(&pEraseInit, &SectorError);
|
||||
}
|
||||
}
|
||||
else if (PageStatus1 == ERASED) { /* Page0 receive, Page1 erased */
|
||||
@ -167,20 +153,18 @@ uint16_t EE_Initialize(void) {
|
||||
pEraseInit.VoltageRange = VOLTAGE_RANGE;
|
||||
/* Erase Page1 */
|
||||
if (!EE_VerifyPageFullyErased(PAGE1_BASE_ADDRESS)) {
|
||||
FlashStatus = HAL_FLASHEx_Erase(&pEraseInit, &SectorError);
|
||||
HAL_StatusTypeDef fStat = HAL_FLASHEx_Erase(&pEraseInit, &SectorError);
|
||||
/* If erase operation was failed, a Flash error code is returned */
|
||||
if (FlashStatus != HAL_OK) return FlashStatus;
|
||||
if (fStat != HAL_OK) return fStat;
|
||||
}
|
||||
/* Mark Page0 as valid */
|
||||
FlashStatus = HAL_FLASH_Program(TYPEPROGRAM_HALFWORD, PAGE0_BASE_ADDRESS, VALID_PAGE);
|
||||
/* If program operation was failed, a Flash error code is returned */
|
||||
if (FlashStatus != HAL_OK) return FlashStatus;
|
||||
/* As the last operation, simply return the result */
|
||||
return HAL_FLASH_Program(TYPEPROGRAM_HALFWORD, PAGE0_BASE_ADDRESS, VALID_PAGE);
|
||||
}
|
||||
else { /* Invalid state -> format eeprom */
|
||||
/* Erase both Page0 and Page1 and set Page0 as valid page */
|
||||
FlashStatus = EE_Format();
|
||||
/* If erase/program operation was failed, a Flash error code is returned */
|
||||
if (FlashStatus != HAL_OK) return FlashStatus;
|
||||
/* As the last operation, simply return the result */
|
||||
return EE_Format();
|
||||
}
|
||||
break;
|
||||
|
||||
@ -204,17 +188,18 @@ uint16_t EE_Initialize(void) {
|
||||
}
|
||||
else { /* Page0 valid, Page1 receive */
|
||||
/* Transfer data from Page0 to Page1 */
|
||||
for (VarIdx = 0; VarIdx < NB_OF_VAR; VarIdx++) {
|
||||
int16_t x = -1;
|
||||
for (uint16_t VarIdx = 0; VarIdx < NB_OF_VAR; VarIdx++) {
|
||||
if ((*(__IO uint16_t*)(PAGE1_BASE_ADDRESS + 6)) == VirtAddVarTab[VarIdx])
|
||||
x = VarIdx;
|
||||
|
||||
if (VarIdx != x) {
|
||||
/* Read the last variables' updates */
|
||||
ReadStatus = EE_ReadVariable(VirtAddVarTab[VarIdx], &DataVar);
|
||||
uint16_t ReadStatus = EE_ReadVariable(VirtAddVarTab[VarIdx], &DataVar);
|
||||
/* In case variable corresponding to the virtual address was found */
|
||||
if (ReadStatus != 0x1) {
|
||||
/* Transfer the variable to the Page1 */
|
||||
EepromStatus = EE_VerifyPageFullWriteVariable(VirtAddVarTab[VarIdx], DataVar);
|
||||
uint16_t EepromStatus = EE_VerifyPageFullWriteVariable(VirtAddVarTab[VarIdx], DataVar);
|
||||
/* If program operation was failed, a Flash error code is returned */
|
||||
if (EepromStatus != HAL_OK) return EepromStatus;
|
||||
}
|
||||
@ -229,19 +214,16 @@ uint16_t EE_Initialize(void) {
|
||||
pEraseInit.VoltageRange = VOLTAGE_RANGE;
|
||||
/* Erase Page0 */
|
||||
if (!EE_VerifyPageFullyErased(PAGE0_BASE_ADDRESS)) {
|
||||
FlashStatus = HAL_FLASHEx_Erase(&pEraseInit, &SectorError);
|
||||
/* If erase operation was failed, a Flash error code is returned */
|
||||
if (FlashStatus != HAL_OK) return FlashStatus;
|
||||
/* As the last operation, simply return the result */
|
||||
return HAL_FLASHEx_Erase(&pEraseInit, &SectorError);
|
||||
}
|
||||
}
|
||||
break;
|
||||
|
||||
default: /* Any other state -> format eeprom */
|
||||
/* Erase both Page0 and Page1 and set Page0 as valid page */
|
||||
FlashStatus = EE_Format();
|
||||
/* If erase/program operation was failed, a Flash error code is returned */
|
||||
if (FlashStatus != HAL_OK) return FlashStatus;
|
||||
break;
|
||||
/* As the last operation, simply return the result */
|
||||
return EE_Format();
|
||||
}
|
||||
|
||||
return HAL_OK;
|
||||
@ -259,11 +241,10 @@ uint16_t EE_Initialize(void) {
|
||||
*/
|
||||
uint16_t EE_VerifyPageFullyErased(uint32_t Address) {
|
||||
uint32_t ReadStatus = 1;
|
||||
uint16_t AddressValue = 0x5555;
|
||||
/* Check each active page address starting from end */
|
||||
while (Address <= PAGE0_END_ADDRESS) {
|
||||
/* Get the current location content to be compared with virtual address */
|
||||
AddressValue = (*(__IO uint16_t*)Address);
|
||||
uint16_t AddressValue = (*(__IO uint16_t*)Address);
|
||||
/* Compare the read address with the virtual address */
|
||||
if (AddressValue != ERASED) {
|
||||
/* In case variable value is read, reset ReadStatus flag */
|
||||
@ -288,26 +269,22 @@ uint16_t EE_VerifyPageFullyErased(uint32_t Address) {
|
||||
* - NO_VALID_PAGE: if no valid page was found.
|
||||
*/
|
||||
uint16_t EE_ReadVariable(uint16_t VirtAddress, uint16_t* Data) {
|
||||
uint16_t ValidPage = PAGE0;
|
||||
uint16_t AddressValue = 0x5555, ReadStatus = 1;
|
||||
uint32_t Address = EEPROM_START_ADDRESS, PageStartAddress = EEPROM_START_ADDRESS;
|
||||
uint16_t ReadStatus = 1;
|
||||
|
||||
/* Get active Page for read operation */
|
||||
ValidPage = EE_FindValidPage(READ_FROM_VALID_PAGE);
|
||||
uint16_t ValidPage = EE_FindValidPage(READ_FROM_VALID_PAGE);
|
||||
|
||||
/* Check if there is no valid page */
|
||||
if (ValidPage == NO_VALID_PAGE) return NO_VALID_PAGE;
|
||||
|
||||
/* Get the valid Page start Address */
|
||||
PageStartAddress = (uint32_t)(EEPROM_START_ADDRESS + (uint32_t)(ValidPage * PAGE_SIZE));
|
||||
|
||||
/* Get the valid Page end Address */
|
||||
Address = (uint32_t)((EEPROM_START_ADDRESS - 2) + (uint32_t)((1 + ValidPage) * PAGE_SIZE));
|
||||
/* Get the valid Page start and end Addresses */
|
||||
uint32_t PageStartAddress = uint32_t(EEPROM_START_ADDRESS) + uint32_t(ValidPage * (PAGE_SIZE)),
|
||||
Address = PageStartAddress + PAGE_SIZE - 2;
|
||||
|
||||
/* Check each active page address starting from end */
|
||||
while (Address > (PageStartAddress + 2)) {
|
||||
while (Address > PageStartAddress + 2) {
|
||||
/* Get the current location content to be compared with virtual address */
|
||||
AddressValue = (*(__IO uint16_t*)Address);
|
||||
uint16_t AddressValue = (*(__IO uint16_t*)Address);
|
||||
|
||||
/* Compare the read address with the virtual address */
|
||||
if (AddressValue == VirtAddress) {
|
||||
@ -353,16 +330,17 @@ uint16_t EE_WriteVariable(uint16_t VirtAddress, uint16_t Data) {
|
||||
* EEPROM formating
|
||||
*/
|
||||
static HAL_StatusTypeDef EE_Format(void) {
|
||||
HAL_StatusTypeDef FlashStatus = HAL_OK;
|
||||
uint32_t SectorError = 0;
|
||||
FLASH_EraseInitTypeDef pEraseInit;
|
||||
|
||||
pEraseInit.TypeErase = FLASH_TYPEERASE_SECTORS;
|
||||
pEraseInit.Sector = PAGE0_ID;
|
||||
pEraseInit.NbSectors = 1;
|
||||
pEraseInit.VoltageRange = VOLTAGE_RANGE;
|
||||
|
||||
HAL_StatusTypeDef FlashStatus; // = HAL_OK
|
||||
|
||||
/* Erase Page0 */
|
||||
if (!EE_VerifyPageFullyErased(PAGE0_BASE_ADDRESS)) {
|
||||
uint32_t SectorError;
|
||||
FlashStatus = HAL_FLASHEx_Erase(&pEraseInit, &SectorError);
|
||||
/* If erase operation was failed, a Flash error code is returned */
|
||||
if (FlashStatus != HAL_OK) return FlashStatus;
|
||||
@ -375,9 +353,9 @@ static HAL_StatusTypeDef EE_Format(void) {
|
||||
pEraseInit.Sector = PAGE1_ID;
|
||||
/* Erase Page1 */
|
||||
if (!EE_VerifyPageFullyErased(PAGE1_BASE_ADDRESS)) {
|
||||
FlashStatus = HAL_FLASHEx_Erase(&pEraseInit, &SectorError);
|
||||
/* If erase operation was failed, a Flash error code is returned */
|
||||
if (FlashStatus != HAL_OK) return FlashStatus;
|
||||
/* As the last operation, just return the result code */
|
||||
uint32_t SectorError;
|
||||
return HAL_FLASHEx_Erase(&pEraseInit, &SectorError);
|
||||
}
|
||||
|
||||
return HAL_OK;
|
||||
@ -393,12 +371,8 @@ static HAL_StatusTypeDef EE_Format(void) {
|
||||
* of no valid page was found
|
||||
*/
|
||||
static uint16_t EE_FindValidPage(uint8_t Operation) {
|
||||
uint16_t PageStatus0 = 6, PageStatus1 = 6;
|
||||
|
||||
/* Get Page0 actual status */
|
||||
PageStatus0 = (*(__IO uint16_t*)PAGE0_BASE_ADDRESS);
|
||||
|
||||
/* Get Page1 actual status */
|
||||
/* Get Page0 and Page1 actual status */
|
||||
uint16_t PageStatus0 = (*(__IO uint16_t*)PAGE0_BASE_ADDRESS),
|
||||
PageStatus1 = (*(__IO uint16_t*)PAGE1_BASE_ADDRESS);
|
||||
|
||||
/* Write or read operation */
|
||||
@ -406,13 +380,11 @@ static uint16_t EE_FindValidPage(uint8_t Operation) {
|
||||
case WRITE_IN_VALID_PAGE: /* ---- Write operation ---- */
|
||||
if (PageStatus1 == VALID_PAGE) {
|
||||
/* Page0 receiving data */
|
||||
if (PageStatus0 == RECEIVE_DATA) return PAGE0; /* Page0 valid */
|
||||
else return PAGE1; /* Page1 valid */
|
||||
return (PageStatus0 == RECEIVE_DATA) ? PAGE0 : PAGE1;
|
||||
}
|
||||
else if (PageStatus0 == VALID_PAGE) {
|
||||
/* Page1 receiving data */
|
||||
if (PageStatus1 == RECEIVE_DATA) return PAGE1; /* Page1 valid */
|
||||
else return PAGE0; /* Page0 valid */
|
||||
return (PageStatus1 == RECEIVE_DATA) ? PAGE1 : PAGE0;
|
||||
}
|
||||
else
|
||||
return NO_VALID_PAGE; /* No valid Page */
|
||||
@ -441,34 +413,26 @@ static uint16_t EE_FindValidPage(uint8_t Operation) {
|
||||
* - Flash error code: on write Flash error
|
||||
*/
|
||||
static uint16_t EE_VerifyPageFullWriteVariable(uint16_t VirtAddress, uint16_t Data) {
|
||||
HAL_StatusTypeDef FlashStatus = HAL_OK;
|
||||
uint16_t ValidPage = PAGE0;
|
||||
uint32_t Address = EEPROM_START_ADDRESS, PageEndAddress = EEPROM_START_ADDRESS+PAGE_SIZE;
|
||||
|
||||
/* Get valid Page for write operation */
|
||||
ValidPage = EE_FindValidPage(WRITE_IN_VALID_PAGE);
|
||||
uint16_t ValidPage = EE_FindValidPage(WRITE_IN_VALID_PAGE);
|
||||
|
||||
/* Check if there is no valid page */
|
||||
if (ValidPage == NO_VALID_PAGE) return NO_VALID_PAGE;
|
||||
|
||||
/* Get the valid Page start Address */
|
||||
Address = (uint32_t)(EEPROM_START_ADDRESS + (uint32_t)(ValidPage * PAGE_SIZE));
|
||||
|
||||
/* Get the valid Page end Address */
|
||||
PageEndAddress = (uint32_t)((EEPROM_START_ADDRESS - 1) + (uint32_t)((ValidPage + 1) * PAGE_SIZE));
|
||||
/* Get the valid Page start and end Addresses */
|
||||
uint32_t Address = uint32_t(EEPROM_START_ADDRESS) + uint32_t(ValidPage * (PAGE_SIZE)),
|
||||
PageEndAddress = Address + PAGE_SIZE - 1;
|
||||
|
||||
/* Check each active page address starting from begining */
|
||||
while (Address < PageEndAddress) {
|
||||
/* Verify if Address and Address+2 contents are 0xFFFFFFFF */
|
||||
if ((*(__IO uint32_t*)Address) == 0xFFFFFFFF) {
|
||||
/* Set variable data */
|
||||
FlashStatus = HAL_FLASH_Program(TYPEPROGRAM_HALFWORD, Address, Data);
|
||||
HAL_StatusTypeDef FlashStatus = HAL_FLASH_Program(TYPEPROGRAM_HALFWORD, Address, Data);
|
||||
/* If program operation was failed, a Flash error code is returned */
|
||||
if (FlashStatus != HAL_OK) return FlashStatus;
|
||||
/* Set variable virtual address */
|
||||
FlashStatus = HAL_FLASH_Program(TYPEPROGRAM_HALFWORD, Address + 2, VirtAddress);
|
||||
/* Return program operation status */
|
||||
return FlashStatus;
|
||||
/* Set variable virtual address, return status */
|
||||
return HAL_FLASH_Program(TYPEPROGRAM_HALFWORD, Address + 2, VirtAddress);
|
||||
}
|
||||
else /* Next address location */
|
||||
Address += 4;
|
||||
@ -490,16 +454,10 @@ static uint16_t EE_VerifyPageFullWriteVariable(uint16_t VirtAddress, uint16_t Da
|
||||
* - Flash error code: on write Flash error
|
||||
*/
|
||||
static uint16_t EE_PageTransfer(uint16_t VirtAddress, uint16_t Data) {
|
||||
HAL_StatusTypeDef FlashStatus = HAL_OK;
|
||||
uint32_t NewPageAddress = EEPROM_START_ADDRESS;
|
||||
uint16_t OldPageId=0;
|
||||
uint16_t ValidPage = PAGE0, VarIdx = 0;
|
||||
uint16_t EepromStatus = 0, ReadStatus = 0;
|
||||
uint32_t SectorError = 0;
|
||||
FLASH_EraseInitTypeDef pEraseInit;
|
||||
|
||||
/* Get active Page for read operation */
|
||||
ValidPage = EE_FindValidPage(READ_FROM_VALID_PAGE);
|
||||
uint16_t ValidPage = EE_FindValidPage(READ_FROM_VALID_PAGE);
|
||||
uint32_t NewPageAddress = EEPROM_START_ADDRESS;
|
||||
uint16_t OldPageId = 0;
|
||||
|
||||
if (ValidPage == PAGE1) { /* Page1 valid */
|
||||
/* New page address where variable will be moved to */
|
||||
@ -517,20 +475,20 @@ static uint16_t EE_PageTransfer(uint16_t VirtAddress, uint16_t Data) {
|
||||
return NO_VALID_PAGE; /* No valid Page */
|
||||
|
||||
/* Set the new Page status to RECEIVE_DATA status */
|
||||
FlashStatus = HAL_FLASH_Program(TYPEPROGRAM_HALFWORD, NewPageAddress, RECEIVE_DATA);
|
||||
HAL_StatusTypeDef FlashStatus = HAL_FLASH_Program(TYPEPROGRAM_HALFWORD, NewPageAddress, RECEIVE_DATA);
|
||||
/* If program operation was failed, a Flash error code is returned */
|
||||
if (FlashStatus != HAL_OK) return FlashStatus;
|
||||
|
||||
/* Write the variable passed as parameter in the new active page */
|
||||
EepromStatus = EE_VerifyPageFullWriteVariable(VirtAddress, Data);
|
||||
uint16_t EepromStatus = EE_VerifyPageFullWriteVariable(VirtAddress, Data);
|
||||
/* If program operation was failed, a Flash error code is returned */
|
||||
if (EepromStatus != HAL_OK) return EepromStatus;
|
||||
|
||||
/* Transfer process: transfer variables from old to the new active page */
|
||||
for (VarIdx = 0; VarIdx < NB_OF_VAR; VarIdx++) {
|
||||
for (uint16_t VarIdx = 0; VarIdx < NB_OF_VAR; VarIdx++) {
|
||||
if (VirtAddVarTab[VarIdx] != VirtAddress) { /* Check each variable except the one passed as parameter */
|
||||
/* Read the other last variable updates */
|
||||
ReadStatus = EE_ReadVariable(VirtAddVarTab[VarIdx], &DataVar);
|
||||
uint16_t ReadStatus = EE_ReadVariable(VirtAddVarTab[VarIdx], &DataVar);
|
||||
/* In case variable corresponding to the virtual address was found */
|
||||
if (ReadStatus != 0x1) {
|
||||
/* Transfer the variable to the new active page */
|
||||
@ -541,23 +499,21 @@ static uint16_t EE_PageTransfer(uint16_t VirtAddress, uint16_t Data) {
|
||||
}
|
||||
}
|
||||
|
||||
FLASH_EraseInitTypeDef pEraseInit;
|
||||
pEraseInit.TypeErase = TYPEERASE_SECTORS;
|
||||
pEraseInit.Sector = OldPageId;
|
||||
pEraseInit.NbSectors = 1;
|
||||
pEraseInit.VoltageRange = VOLTAGE_RANGE;
|
||||
|
||||
/* Erase the old Page: Set old Page status to ERASED status */
|
||||
uint32_t SectorError;
|
||||
FlashStatus = HAL_FLASHEx_Erase(&pEraseInit, &SectorError);
|
||||
/* If erase operation was failed, a Flash error code is returned */
|
||||
if (FlashStatus != HAL_OK) return FlashStatus;
|
||||
|
||||
/* Set new Page status to VALID_PAGE status */
|
||||
FlashStatus = HAL_FLASH_Program(TYPEPROGRAM_HALFWORD, NewPageAddress, VALID_PAGE);
|
||||
/* If program operation was failed, a Flash error code is returned */
|
||||
if (FlashStatus != HAL_OK) return FlashStatus;
|
||||
|
||||
/* Return last operation flash status */
|
||||
return FlashStatus;
|
||||
/* As the last operation, just return the result code */
|
||||
return HAL_FLASH_Program(TYPEPROGRAM_HALFWORD, NewPageAddress, VALID_PAGE);
|
||||
}
|
||||
|
||||
#endif // STM32F7
|
||||
|
||||
@ -53,56 +53,54 @@
|
||||
|
||||
/* Exported constants --------------------------------------------------------*/
|
||||
/* EEPROM emulation firmware error codes */
|
||||
#define EE_OK (uint32_t)HAL_OK
|
||||
#define EE_ERROR (uint32_t)HAL_ERROR
|
||||
#define EE_BUSY (uint32_t)HAL_BUSY
|
||||
#define EE_TIMEOUT (uint32_t)HAL_TIMEOUT
|
||||
#define EE_OK uint32_t(HAL_OK)
|
||||
#define EE_ERROR uint32_t(HAL_ERROR)
|
||||
#define EE_BUSY uint32_t(HAL_BUSY)
|
||||
#define EE_TIMEOUT uint32_t(HAL_TIMEOUT)
|
||||
|
||||
/* Define the size of the sectors to be used */
|
||||
#define PAGE_SIZE (uint32_t)0x4000 /* Page size = 16KByte */
|
||||
#define PAGE_SIZE uint32_t(0x4000) /* Page size = 16KByte */
|
||||
|
||||
/* Device voltage range supposed to be [2.7V to 3.6V], the operation will
|
||||
be done by word */
|
||||
#define VOLTAGE_RANGE (uint8_t)VOLTAGE_RANGE_3
|
||||
#define VOLTAGE_RANGE uint8_t(VOLTAGE_RANGE_3)
|
||||
|
||||
/* EEPROM start address in Flash */
|
||||
#define EEPROM_START_ADDRESS ((uint32_t)0x08100000) /* EEPROM emulation start address:
|
||||
#define EEPROM_START_ADDRESS uint32_t(0x08100000) /* EEPROM emulation start address:
|
||||
from sector2 : after 16KByte of used
|
||||
Flash memory */
|
||||
|
||||
/* Pages 0 and 1 base and end addresses */
|
||||
#define PAGE0_BASE_ADDRESS ((uint32_t)(EEPROM_START_ADDRESS + 0x0000))
|
||||
#define PAGE0_END_ADDRESS ((uint32_t)(EEPROM_START_ADDRESS + (PAGE_SIZE - 1)))
|
||||
#define PAGE0_BASE_ADDRESS uint32_t(EEPROM_START_ADDRESS + 0x0000)
|
||||
#define PAGE0_END_ADDRESS uint32_t(EEPROM_START_ADDRESS + PAGE_SIZE - 1)
|
||||
#define PAGE0_ID FLASH_SECTOR_1
|
||||
|
||||
#define PAGE1_BASE_ADDRESS ((uint32_t)(EEPROM_START_ADDRESS + 0x4000))
|
||||
#define PAGE1_END_ADDRESS ((uint32_t)(EEPROM_START_ADDRESS + (2 * PAGE_SIZE - 1)))
|
||||
#define PAGE1_BASE_ADDRESS uint32_t(EEPROM_START_ADDRESS + 0x4000)
|
||||
#define PAGE1_END_ADDRESS uint32_t(EEPROM_START_ADDRESS + 2 * (PAGE_SIZE) - 1)
|
||||
#define PAGE1_ID FLASH_SECTOR_2
|
||||
|
||||
/* Used Flash pages for EEPROM emulation */
|
||||
#define PAGE0 ((uint16_t)0x0000)
|
||||
#define PAGE1 ((uint16_t)0x0001) /* Page nb between PAGE0_BASE_ADDRESS & PAGE1_BASE_ADDRESS*/
|
||||
#define PAGE0 uint16_t(0x0000)
|
||||
#define PAGE1 uint16_t(0x0001) /* Page nb between PAGE0_BASE_ADDRESS & PAGE1_BASE_ADDRESS*/
|
||||
|
||||
/* No valid page define */
|
||||
#define NO_VALID_PAGE ((uint16_t)0x00AB)
|
||||
#define NO_VALID_PAGE uint16_t(0x00AB)
|
||||
|
||||
/* Page status definitions */
|
||||
#define ERASED ((uint16_t)0xFFFF) /* Page is empty */
|
||||
#define RECEIVE_DATA ((uint16_t)0xEEEE) /* Page is marked to receive data */
|
||||
#define VALID_PAGE ((uint16_t)0x0000) /* Page containing valid data */
|
||||
#define ERASED uint16_t(0xFFFF) /* Page is empty */
|
||||
#define RECEIVE_DATA uint16_t(0xEEEE) /* Page is marked to receive data */
|
||||
#define VALID_PAGE uint16_t(0x0000) /* Page containing valid data */
|
||||
|
||||
/* Valid pages in read and write defines */
|
||||
#define READ_FROM_VALID_PAGE ((uint8_t)0x00)
|
||||
#define WRITE_IN_VALID_PAGE ((uint8_t)0x01)
|
||||
#define READ_FROM_VALID_PAGE uint8_t(0x00)
|
||||
#define WRITE_IN_VALID_PAGE uint8_t(0x01)
|
||||
|
||||
/* Page full define */
|
||||
#define PAGE_FULL ((uint8_t)0x80)
|
||||
#define PAGE_FULL uint8_t(0x80)
|
||||
|
||||
/* Variables' number */
|
||||
#define NB_OF_VAR ((uint16_t)4096)
|
||||
#define NB_OF_VAR uint16_t(4096)
|
||||
|
||||
/* Exported types ------------------------------------------------------------*/
|
||||
/* Exported macro ------------------------------------------------------------*/
|
||||
/* Exported functions ------------------------------------------------------- */
|
||||
uint16_t EE_Initialize(void);
|
||||
uint16_t EE_ReadVariable(uint16_t VirtAddress, uint16_t* Data);
|
||||
|
||||
@ -20,7 +20,7 @@
|
||||
#ifdef STM32F7
|
||||
|
||||
/**
|
||||
* Description: functions for I2C connected external EEPROM.
|
||||
* Description: Functions for a Flash emulated EEPROM
|
||||
* Not platform dependent.
|
||||
*/
|
||||
|
||||
@ -67,34 +67,32 @@ void eeprom_init() {
|
||||
}
|
||||
|
||||
void eeprom_write_byte(uint8_t *pos, unsigned char value) {
|
||||
uint16_t eeprom_address = (unsigned) pos;
|
||||
uint16_t eeprom_address = unsigned(pos);
|
||||
|
||||
eeprom_init();
|
||||
|
||||
HAL_FLASH_Unlock();
|
||||
__HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_EOP | FLASH_FLAG_OPERR | FLASH_FLAG_WRPERR |FLASH_FLAG_PGAERR | FLASH_FLAG_PGPERR | FLASH_FLAG_PGSERR);
|
||||
|
||||
if (EE_WriteVariable(eeprom_address, (uint16_t) value) != EE_OK)
|
||||
if (EE_WriteVariable(eeprom_address, uint16_t(value)) != EE_OK)
|
||||
for (;;) HAL_Delay(1); // Spin forever until watchdog reset
|
||||
|
||||
HAL_FLASH_Lock();
|
||||
}
|
||||
|
||||
uint8_t eeprom_read_byte(uint8_t *pos) {
|
||||
uint16_t data = 0xFF;
|
||||
uint16_t eeprom_address = (unsigned)pos;
|
||||
|
||||
eeprom_init();
|
||||
|
||||
if (EE_ReadVariable(eeprom_address, &data) != EE_OK) {
|
||||
return (unsigned char)data;
|
||||
}
|
||||
return (unsigned char)data;
|
||||
uint16_t data = 0xFF;
|
||||
uint16_t eeprom_address = unsigned(pos);
|
||||
(void)EE_ReadVariable(eeprom_address, &data); // Data unchanged on error
|
||||
|
||||
return uint8_t(data);
|
||||
}
|
||||
|
||||
void eeprom_read_block(void *__dst, const void *__src, size_t __n) {
|
||||
uint16_t data = 0xFF;
|
||||
uint16_t eeprom_address = (unsigned) __src;
|
||||
uint16_t eeprom_address = unsigned(__src);
|
||||
|
||||
eeprom_init();
|
||||
|
||||
|
||||
@ -95,7 +95,6 @@ void eeprom_update_block(const void *pos, void* eeprom_address, size_t n) {
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
uint8_t eeprom_read_byte(uint8_t *pos) {
|
||||
unsigned eeprom_address = (unsigned)pos;
|
||||
|
||||
@ -109,7 +108,7 @@ uint8_t eeprom_read_byte(uint8_t *pos) {
|
||||
return Wire.available() ? Wire.read() : 0xFF;
|
||||
}
|
||||
|
||||
// maybe let's not read more than 30 or 32 bytes at a time!
|
||||
// Don't read more than 30..32 bytes at a time!
|
||||
void eeprom_read_block(void* pos, const void* eeprom_address, size_t n) {
|
||||
eeprom_init();
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user