EmbeddedModules/peripheral/ee/ee.c at master · ElluIFX/EmbeddedModules · GitHub

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#include <string.h>

#include "ee_internal.h"

#define EE_CACHE_ENABLE 1

uint32_t EE_PageSize(void) {
    return EE_SIZE;
}

uint8_t EE_PageCount(void) {
    return EE_PAGE_NUMBER;
}

uint8_t* EE_PageAddress(uint8_t PageOffset) {
    if (PageOffset >= EE_PAGE_NUMBER) {
        return NULL;
    }
    return (uint8_t*)(EE_ADDRESS(PageOffset));
}

bool EE_Erase(uint8_t PageOffset) {
    if (PageOffset >= EE_PAGE_NUMBER) {
        return false;
    }
    bool answer = false;
    uint32_t error;
    FLASH_EraseInitTypeDef flashErase;
    do {
        HAL_FLASH_Unlock();
#if EE_ERASE == EE_ERASE_PAGE_ADDRESS
        flashErase.TypeErase = FLASH_TYPEERASE_PAGES;
        flashErase.PageAddress = EE_ADDRESS(PageOffset);
        flashErase.NbPages = 1;
#elif EE_ERASE == EE_ERASE_PAGE_NUMBER
        flashErase.TypeErase = FLASH_TYPEERASE_PAGES;
        flashErase.Page = EE_LAST_PAGE_SECTOR - PageOffset;
        flashErase.NbPages = 1;
#else
        flashErase.TypeErase = FLASH_TYPEERASE_SECTORS;
        flashErase.Sector = EE_LAST_PAGE_SECTOR - PageOffset;
        flashErase.NbSectors = 1;
#endif
#ifdef EE_BANK_SELECT
        flashErase.Banks = EE_BANK_SELECT;
#endif
#ifdef FLASH_VOLTAGE_RANGE_3
        flashErase.VoltageRange = FLASH_VOLTAGE_RANGE_3;
#endif
#if EE_CACHE_ENABLE
        SCB_InvalidateICache();
#endif
        if (HAL_FLASHEx_Erase(&flashErase, &error) != HAL_OK) {
            break;
        }
        if (error != 0xFFFFFFFF) {
            break;
        }
#if EE_CACHE_ENABLE
        SCB_InvalidateICache();
        SCB_CleanInvalidateDCache();
#endif
        answer = true;

    } while (0);

    HAL_FLASH_Lock();
    return answer;
}

bool EE_Read(uint8_t PageOffset, uint8_t* Data, uint32_t Size) {
    if (PageOffset >= EE_PAGE_NUMBER) {
        return false;
    }
    if (Size > EE_SIZE) {
        return false;
    }
    __IO uint8_t* Src = (__IO uint8_t*)(EE_ADDRESS(PageOffset));
    for (uint32_t i = 0; i < Size; i++) {
        *Data++ = *Src++;
    }
    return true;
}

bool EE_Write(uint8_t PageOffset, uint8_t* Data, uint32_t Size, bool Erase) {
    if (PageOffset >= EE_PAGE_NUMBER) {
        return false;
    }
    if (Size > EE_SIZE) {
        return false;
    }
    bool answer = true;
    if (Erase) {
        if (EE_Erase(PageOffset) == false) {
            return false;
        }
    }
    uint32_t Address = EE_ADDRESS(PageOffset);
    do {
#if EE_CACHE_ENABLE
        SCB_InvalidateICache();
        SCB_CleanInvalidateDCache();
#endif
        HAL_FLASH_Unlock();
#if (defined FLASH_TYPEPROGRAM_HALFWORD)
        for (uint32_t i = 0; i < Size; i += 2) {
            uint64_t halfWord;
            memcpy((uint8_t*)&halfWord, Data, 2);
            if (HAL_FLASH_Program(FLASH_TYPEPROGRAM_HALFWORD, Address + i,
                                  halfWord) != HAL_OK) {
                answer = false;
                break;
            }
            Data += 2;
        }
#elif (defined FLASH_TYPEPROGRAM_WORD)
        for (uint32_t i = 0; i < Size; i += 4) {
            if (HAL_FLASH_Program(FLASH_TYPEPROGRAM_WORD, Address + i,
                                  *(uint32_t*)Data) != HAL_OK) {
                answer = false;
                break;
            }
            Data += 4;
        }
#elif (defined FLASH_TYPEPROGRAM_DOUBLEWORD)
        for (uint32_t i = 0; i < Size; i += 8) {
            uint64_t doubleWord;
            memcpy((uint8_t*)&doubleWord, Data, 8);
            if (HAL_FLASH_Program(FLASH_TYPEPROGRAM_DOUBLEWORD, Address,
                                  doubleWord) != HAL_OK) {
                answer = false;
                break;
            }
            Address += 8;
            Data += 8;
        }
        if (answer && Size & 0x01 == 1) {  // last word
            uint64_t doubleWord = 0xffffffff00000000uL | *(uint32_t*)Data;
            if (HAL_FLASH_Program(FLASH_TYPEPROGRAM_DOUBLEWORD, Address,
                                  doubleWord) != HAL_OK) {
                answer = false;
                break;
            }
        }
#elif (defined FLASH_TYPEPROGRAM_QUADWORD)
        for (uint32_t i = 0; i < Size; i += 16) {
            if (HAL_FLASH_Program(FLASH_TYPEPROGRAM_QUADWORD, Address + i,
                                  (uint64_t)(uint32_t)Data) != HAL_OK) {
                answer = false;
                break;
            }
            Data += 16;
        }
#elif (defined FLASH_TYPEPROGRAM_FLASHWORD)
        for (uint32_t i = 0; i < Size;
             i += FLASH_NB_32BITWORD_IN_FLASHWORD * 4) {
            if (HAL_FLASH_Program(FLASH_TYPEPROGRAM_FLASHWORD, Address + i,
                                  (uint64_t)(uint32_t)Data) != HAL_OK) {
                answer = false;
                break;
            }
            Data += FLASH_NB_32BITWORD_IN_FLASHWORD * 4;
        }
#endif

    } while (0);

    HAL_FLASH_Lock();
#if EE_CACHE_ENABLE
    SCB_InvalidateICache();
    SCB_CleanInvalidateDCache();
#endif
    return answer;
}

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