#include "stddef.h"
#include "stdint.h"
#include "Emulated_EEPROM_Access.h"
typedef union
{
uint32_t u32Word[1U];
struct
{
uint16_t u16Index;
uint16_t u16IndexInv;
}stField;
}EEPROM_Ctrl_Data_un_t;
typedef struct
{
uint8_t u8State;
uint16_t u16BlockNum;
uint16_t u16ProgLen;
uint32_t u32ProgAddr;
uint32_t* pu32ProgData;
}EEPROM_Access_Ctrl_st_t;
#define EEPROM_BLANK_CHECK_RECORD_NUM (3U)
#define EEPROM_OVER_SEARCH_RECORD_NUM (3U)
#define EEPROM_WR_STATE_IDLE (0U)
#define EEPROM_WR_STATE_ERASE (1U)
#define EEPROM_WR_STATE_PROG (2U)
// --------------------------------------------------------------
// CRC16计算方法1:使用2个256长度的校验表
// --------------------------------------------------------------
static const uint8_t g_u8EEPROMCRCTableH[] =
{
0x00U, 0xC1U, 0x81U, 0x40U, 0x01U, 0xC0U, 0x80U, 0x41U,
0x01U, 0xC0U, 0x80U, 0x41U, 0x00U, 0xC1U, 0x81U, 0x40U,
0x01U, 0xC0U, 0x80U, 0x41U, 0x00U, 0xC1U, 0x81U, 0x40U,
0x00U, 0xC1U, 0x81U, 0x40U, 0x01U, 0xC0U, 0x80U, 0x41U,
0x01U, 0xC0U, 0x80U, 0x41U, 0x00U, 0xC1U, 0x81U, 0x40U,
0x00U, 0xC1U, 0x81U, 0x40U, 0x01U, 0xC0U, 0x80U, 0x41U,
0x00U, 0xC1U, 0x81U, 0x40U, 0x01U, 0xC0U, 0x80U, 0x41U,
0x01U, 0xC0U, 0x80U, 0x41U, 0x00U, 0xC1U, 0x81U, 0x40U,
0x01U, 0xC0U, 0x80U, 0x41U, 0x00U, 0xC1U, 0x81U, 0x40U,
0x00U, 0xC1U, 0x81U, 0x40U, 0x01U, 0xC0U, 0x80U, 0x41U,
0x00U, 0xC1U, 0x81U, 0x40U, 0x01U, 0xC0U, 0x80U, 0x41U,
0x01U, 0xC0U, 0x80U, 0x41U, 0x00U, 0xC1U, 0x81U, 0x40U,
0x00U, 0xC1U, 0x81U, 0x40U, 0x01U, 0xC0U, 0x80U, 0x41U,
0x01U, 0xC0U, 0x80U, 0x41U, 0x00U, 0xC1U, 0x81U, 0x40U,
0x01U, 0xC0U, 0x80U, 0x41U, 0x00U, 0xC1U, 0x81U, 0x40U,
0x00U, 0xC1U, 0x81U, 0x40U, 0x01U, 0xC0U, 0x80U, 0x41U,
0x01U, 0xC0U, 0x80U, 0x41U, 0x00U, 0xC1U, 0x81U, 0x40U,
0x00U, 0xC1U, 0x81U, 0x40U, 0x01U, 0xC0U, 0x80U, 0x41U,
0x00U, 0xC1U, 0x81U, 0x40U, 0x01U, 0xC0U, 0x80U, 0x41U,
0x01U, 0xC0U, 0x80U, 0x41U, 0x00U, 0xC1U, 0x81U, 0x40U,
0x00U, 0xC1U, 0x81U, 0x40U, 0x01U, 0xC0U, 0x80U, 0x41U,
0x01U, 0xC0U, 0x80U, 0x41U, 0x00U, 0xC1U, 0x81U, 0x40U,
0x01U, 0xC0U, 0x80U, 0x41U, 0x00U, 0xC1U, 0x81U, 0x40U,
0x00U, 0xC1U, 0x81U, 0x40U, 0x01U, 0xC0U, 0x80U, 0x41U,
0x00U, 0xC1U, 0x81U, 0x40U, 0x01U, 0xC0U, 0x80U, 0x41U,
0x01U, 0xC0U, 0x80U, 0x41U, 0x00U, 0xC1U, 0x81U, 0x40U,
0x01U, 0xC0U, 0x80U, 0x41U, 0x00U, 0xC1U, 0x81U, 0x40U,
0x00U, 0xC1U, 0x81U, 0x40U, 0x01U, 0xC0U, 0x80U, 0x41U,
0x01U, 0xC0U, 0x80U, 0x41U, 0x00U, 0xC1U, 0x81U, 0x40U,
0x00U, 0xC1U, 0x81U, 0x40U, 0x01U, 0xC0U, 0x80U, 0x41U,
0x00U, 0xC1U, 0x81U, 0x40U, 0x01U, 0xC0U, 0x80U, 0x41U,
0x01U, 0xC0U, 0x80U, 0x41U, 0x00U, 0xC1U, 0x81U, 0x40U,
};
static const uint8_t g_u8EEPROMCRCTableL[] =
{
0x00U, 0xC0U, 0xC1U, 0x01U, 0xC3U, 0x03U, 0x02U, 0xC2U,
0xC6U, 0x06U, 0x07U, 0xC7U, 0x05U, 0xC5U, 0xC4U, 0x04U,
0xCCU, 0x0CU, 0x0DU, 0xCDU, 0x0FU, 0xCFU, 0xCEU, 0x0EU,
0x0AU, 0xCAU, 0xCBU, 0x0BU, 0xC9U, 0x09U, 0x08U, 0xC8U,
0xD8U, 0x18U, 0x19U, 0xD9U, 0x1BU, 0xDBU, 0xDAU, 0x1AU,
0x1EU, 0xDEU, 0xDFU, 0x1FU, 0xDDU, 0x1DU, 0x1CU, 0xDCU,
0x14U, 0xD4U, 0xD5U, 0x15U, 0xD7U, 0x17U, 0x16U, 0xD6U,
0xD2U, 0x12U, 0x13U, 0xD3U, 0x11U, 0xD1U, 0xD0U, 0x10U,
0xF0U, 0x30U, 0x31U, 0xF1U, 0x33U, 0xF3U, 0xF2U, 0x32U,
0x36U, 0xF6U, 0xF7U, 0x37U, 0xF5U, 0x35U, 0x34U, 0xF4U,
0x3CU, 0xFCU, 0xFDU, 0x3DU, 0xFFU, 0x3FU, 0x3EU, 0xFEU,
0xFAU, 0x3AU, 0x3BU, 0xFBU, 0x39U, 0xF9U, 0xF8U, 0x38U,
0x28U, 0xE8U, 0xE9U, 0x29U, 0xEBU, 0x2BU, 0x2AU, 0xEAU,
0xEEU, 0x2EU, 0x2FU, 0xEFU, 0x2DU, 0xEDU, 0xECU, 0x2CU,
0xE4U, 0x24U, 0x25U, 0xE5U, 0x27U, 0xE7U, 0xE6U, 0x26U,
0x22U, 0xE2U, 0xE3U, 0x23U, 0xE1U, 0x21U, 0x20U, 0xE0U,
0xA0U, 0x60U, 0x61U, 0xA1U, 0x63U, 0xA3U, 0xA2U, 0x62U,
0x66U, 0xA6U, 0xA7U, 0x67U, 0xA5U, 0x65U, 0x64U, 0xA4U,
0x6CU, 0xACU, 0xADU, 0x6DU, 0xAFU, 0x6FU, 0x6EU, 0xAEU,
0xAAU, 0x6AU, 0x6BU, 0xABU, 0x69U, 0xA9U, 0xA8U, 0x68U,
0x78U, 0xB8U, 0xB9U, 0x79U, 0xBBU, 0x7BU, 0x7AU, 0xBAU,
0xBEU, 0x7EU, 0x7FU, 0xBFU, 0x7DU, 0xBDU, 0xBCU, 0x7CU,
0xB4U, 0x74U, 0x75U, 0xB5U, 0x77U, 0xB7U, 0xB6U, 0x76U,
0x72U, 0xB2U, 0xB3U, 0x73U, 0xB1U, 0x71U, 0x70U, 0xB0U,
0x50U, 0x90U, 0x91U, 0x51U, 0x93U, 0x53U, 0x52U, 0x92U,
0x96U, 0x56U, 0x57U, 0x97U, 0x55U, 0x95U, 0x94U, 0x54U,
0x9CU, 0x5CU, 0x5DU, 0x9DU, 0x5FU, 0x9FU, 0x9EU, 0x5EU,
0x5AU, 0x9AU, 0x9BU, 0x5BU, 0x99U, 0x59U, 0x58U, 0x98U,
0x88U, 0x48U, 0x49U, 0x89U, 0x4BU, 0x8BU, 0x8AU, 0x4AU,
0x4EU, 0x8EU, 0x8FU, 0x4FU, 0x8DU, 0x4DU, 0x4CU, 0x8CU,
0x44U, 0x84U, 0x85U, 0x45U, 0x87U, 0x47U, 0x46U, 0x86U,
0x82U, 0x42U, 0x43U, 0x83U, 0x41U, 0x81U, 0x80U, 0x40U,
};
/*static const uint8_t g_u8EEPROMCRCTableH[] =
{
0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U,
0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U,
0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U,
0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U,
0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U,
0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U,
0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U,
0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U,
0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U,
0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U,
0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U,
0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U,
0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U,
0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U,
0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U,
0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U,
0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U,
0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U,
0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U,
0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U,
0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U,
0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U,
0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U,
0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U,
0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U,
0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U,
0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U,
0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U,
0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U,
0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U,
0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U,
0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U,
};
static const uint8_t g_u8EEPROMCRCTableL[] =
{
0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U,
0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U,
0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U,
0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U,
0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U,
0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U,
0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U,
0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U,
0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U,
0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U,
0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U,
0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U,
0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U,
0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U,
0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U,
0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U,
0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U,
0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U,
0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U,
0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U,
0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U,
0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U,
0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U,
0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U,
0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U,
0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U,
0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U,
0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U,
0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U,
0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U,
0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U,
0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U, 0x55U,
};*/
static uint16_t EEPROM_CRC_Calc(uint32_t * pu32Data, uint16_t u16Len);
EEPROM_Access_Ctrl_st_t g_stEEPROMAccess;
EEPROM_Block_Access_st_t * g_pstEEPROMBlock;
EEPROM_Mem_Erase_Func_ptr_t g_pfnEEPROMMemErase;
EEPROM_Mem_Blank_Chk_Func_ptr_t g_pfnEEPROMMemBlankCheck;
EEPROM_Mem_Read_Func_ptr_t g_pfnEEPROMMemRead;
EEPROM_Mem_Write_Func_ptr_t g_pfnEEPROMMemWrite;
void EEPROM_Access_Init(const EEPROM_Block_st_t * pstBlockTable,
EEPROM_Block_Access_st_t * pstBlockAccess,
EEPROM_Media_Access_st_t * pstMediaAccess,
uint16_t u16BlockNum)
{
uint16_t i;
uint8_t u8Loop;
uint8_t u8Ready;
uint16_t u16Index;
uint16_t u16IndexBkup;
uint16_t u16RecordNum;
uint16_t u16MaxRecordNum[2U];
uint16_t u16WordNum;
uint16_t u16Result;
uint32_t u32DataAddr;
uint32_t u32DataAddrBase;
uint32_t u32DataAddrEnd;
EEPROM_Ctrl_Data_un_t unCtrlData;
if ((pstBlockTable != NULL) && (pstBlockAccess != NULL) &&\
(pstMediaAccess != NULL) && (u16BlockNum != 0U))
{
/*** Step 1 : Setup media(data flash) access functions ***/
g_pfnEEPROMMemErase = pstMediaAccess->pfnMemErase;
g_pfnEEPROMMemBlankCheck = pstMediaAccess->pfnMemBlankChk;
g_pfnEEPROMMemRead = pstMediaAccess->pfnMemRead;
g_pfnEEPROMMemWrite = pstMediaAccess->pfnMemWrite;
/*** Step 2 : Generate flash read / write control data ***/
g_stEEPROMAccess.u8State = EEPROM_WR_STATE_IDLE;
g_stEEPROMAccess.u16BlockNum = u16BlockNum;
g_pstEEPROMBlock = pstBlockAccess;
for (i = 0U; i < g_stEEPROMAccess.u16BlockNum; i++)
{
u32DataAddr = pstBlockTable[i].u32EndAddr - pstBlockTable[i].u32StartAddr + 1UL;
g_pstEEPROMBlock[i].u8Status = EEPROM_BLOCK_BLANK;
g_pstEEPROMBlock[i].u32BaseAddr = pstBlockTable[i].u32StartAddr;
g_pstEEPROMBlock[i].u16SectorSize = (uint16_t)(u32DataAddr / 2UL);
g_pstEEPROMBlock[i].u8SectorOffset = 0U;
g_pstEEPROMBlock[i].u16Index = 0U;
g_pstEEPROMBlock[i].u16BlockSize = (uint16_t)(pstBlockTable[i].u32DataSize);
g_pstEEPROMBlock[i].u16MaxRecordNum = g_pstEEPROMBlock[i].u16SectorSize / g_pstEEPROMBlock[i].u16BlockSize;
g_pstEEPROMBlock[i].u16RecordNum = 0U;
g_pstEEPROMBlock[i].pu32Data = pstBlockTable[i].pu32DataBuffer;
}
/*** Step 3 : Blank check and find start record ***/
for (i = 0U; i < g_stEEPROMAccess.u16BlockNum; i++)
{
/***
Step 3.1 Blank check and find start record
- Check if the logic data block related memory is blank.
- Then find out which logic sector contains the most recent record.
- The found sector will define the starting search point of step 3.2.
***/
/* Search sector +0 */
u32DataAddrBase = g_pstEEPROMBlock[i].u32BaseAddr;
u32DataAddrEnd = u32DataAddrBase + (uint32_t)(g_pstEEPROMBlock[i].u16SectorSize) - 1UL;
u32DataAddr = g_pfnEEPROMMemBlankCheck(u32DataAddrBase, u32DataAddrEnd);
if (u32DataAddr == 0x00000000UL)
{
u8Loop = 0U;
u16MaxRecordNum[0U] = 0U;
}
else if (u32DataAddr == 0xFFFFFFFFUL)
{
u8Loop = 1U;
u16MaxRecordNum[0U] = g_pstEEPROMBlock[i].u16MaxRecordNum;
}
else
{
u8Loop = 1U;
u16MaxRecordNum[0U] = (uint16_t)u32DataAddr / g_pstEEPROMBlock[i].u16BlockSize;
}
u16RecordNum = 0U;
u8Ready = 0U;
while (u8Loop)
{
/* Fetch block control data */
u32DataAddr = u32DataAddrBase + (uint32_t)u16RecordNum * (uint32_t)g_pstEEPROMBlock[i].u16BlockSize;
g_pfnEEPROMMemRead(u32DataAddr, unCtrlData.u32Word, 1UL);
if (unCtrlData.stField.u16Index + unCtrlData.stField.u16IndexInv == 0xFFFFU)
{
u8Loop = 0U;
u8Ready = 1U;
g_pstEEPROMBlock[i].u8Status = EEPROM_BLOCK_ACTIVE;
g_pstEEPROMBlock[i].u8SectorOffset = 0U;
g_pstEEPROMBlock[i].u16RecordNum = u16RecordNum;
g_pstEEPROMBlock[i].u16Index = unCtrlData.stField.u16Index;
u16IndexBkup = unCtrlData.stField.u16Index;
}
else
{
u16RecordNum++;
if ((u16RecordNum >= u16MaxRecordNum[0U]) || \
(u16RecordNum >= EEPROM_BLANK_CHECK_RECORD_NUM))
{
u8Loop = 0U;
}
}
}
/* Search sector +1 */
u32DataAddrBase += (uint32_t)(g_pstEEPROMBlock[i].u16SectorSize);
u32DataAddrEnd += (uint32_t)(g_pstEEPROMBlock[i].u16SectorSize);
u32DataAddr = g_pfnEEPROMMemBlankCheck(u32DataAddrBase, u32DataAddrEnd);
if (u32DataAddr == 0x00000000UL)
{
u8Loop = 0U;
u16MaxRecordNum[1U] = 0U;
}
else if (u32DataAddr == 0xFFFFFFFFUL)
{
u8Loop = 1U;
u16MaxRecordNum[1U] = g_pstEEPROMBlock[i].u16MaxRecordNum;
}
else
{
u8Loop = 1U;
u16MaxRecordNum[1U] = (uint16_t)u32DataAddr / g_pstEEPROMBlock[i].u16BlockSize;
}
u16RecordNum = 0U;
while (u8Loop)
{
/* Fetch block control data */
u32DataAddr = u32DataAddrBase + (uint32_t)u16RecordNum * (uint32_t)g_pstEEPROMBlock[i].u16BlockSize;
g_pfnEEPROMMemRead(u32DataAddr, unCtrlData.u32Word, 1UL);
if (unCtrlData.stField.u16Index + unCtrlData.stField.u16IndexInv == 0xFFFFU)
{
u8Loop = 0U;
if (u8Ready == 0U)
{
u8Ready = 1U;
g_pstEEPROMBlock[i].u8Status = EEPROM_BLOCK_ACTIVE;
g_pstEEPROMBlock[i].u8SectorOffset = 1U;
g_pstEEPROMBlock[i].u16RecordNum = u16RecordNum;
g_pstEEPROMBlock[i].u16Index = unCtrlData.stField.u16Index;
u16IndexBkup = unCtrlData.stField.u16Index;
}
else
{
if (unCtrlData.stField.u16Index >= u16IndexBkup)
{
u16Index = unCtrlData.stField.u16Index - u16IndexBkup;
}
else
{
u16Index = unCtrlData.stField.u16Index + (0xFFFFU - u16IndexBkup) + 1U;
}
if (u16Index < g_pstEEPROMBlock[i].u16MaxRecordNum + EEPROM_BLANK_CHECK_RECORD_NUM)
{
g_pstEEPROMBlock[i].u8SectorOffset = 1U;
g_pstEEPROMBlock[i].u16RecordNum = u16RecordNum;
g_pstEEPROMBlock[i].u16Index = unCtrlData.stField.u16Index;
}
}
}
else
{
u16RecordNum++;
if ((u16RecordNum >= u16MaxRecordNum[1U]) || \
(u16RecordNum >= EEPROM_BLANK_CHECK_RECORD_NUM))
{
u8Loop = 0U;
}
}
}
/***
Step 3.2 Search for the most recent record and load data
- Find the last record's address
- Load data form the address
***/
if (g_pstEEPROMBlock[i].u8Status == EEPROM_BLOCK_ACTIVE)
{
/* Find the last record by index */
u32DataAddrBase = g_pstEEPROMBlock[i].u32BaseAddr;
u32DataAddrBase += (uint32_t)(g_pstEEPROMBlock[i].u16SectorSize * (uint16_t)g_pstEEPROMBlock[i].u8SectorOffset);
u16Index = g_pstEEPROMBlock[i].u16Index;
u16RecordNum = g_pstEEPROMBlock[i].u16RecordNum;
u8Loop = 1U;
while (u8Loop)
{
u16RecordNum++;
u16Index++;
if ((u16RecordNum >= u16MaxRecordNum[g_pstEEPROMBlock[i].u8SectorOffset]) || \
(u16RecordNum - g_pstEEPROMBlock[i].u16RecordNum >= EEPROM_OVER_SEARCH_RECORD_NUM))
{
u8Loop = 0U;
}
else
{
/* Fetch block control data */
u32DataAddr = u32DataAddrBase + (uint32_t)u16RecordNum * (uint32_t)g_pstEEPROMBlock[i].u16BlockSize;
g_pfnEEPROMMemRead(u32DataAddr, unCtrlData.u32Word, 1UL);
if (unCtrlData.stField.u16Index + unCtrlData.stField.u16IndexInv == 0xFFFFU)
{
if (unCtrlData.stField.u16Index == u16Index)
{
g_pstEEPROMBlock[i].u16RecordNum = u16RecordNum;
g_pstEEPROMBlock[i].u16Index = unCtrlData.stField.u16Index;
}
}
}
}
/* Load data */
u16RecordNum = g_pstEEPROMBlock[i].u16RecordNum;
u16Index = g_pstEEPROMBlock[i].u16Index;
u16IndexBkup = u16Index;
u8Loop = 1U;
do
{
u32DataAddr = u32DataAddrBase + (uint32_t)u16RecordNum * (uint32_t)g_pstEEPROMBlock[i].u16BlockSize;
g_pfnEEPROMMemRead(u32DataAddr, unCtrlData.u32Word, 1UL);
if (unCtrlData.stField.u16Index + unCtrlData.stField.u16IndexInv == 0xFFFFU)
{
if (u16Index == unCtrlData.stField.u16Index)
{
u16IndexBkup = u16Index;
u16WordNum = g_pstEEPROMBlock[i].u16BlockSize / 4U;
/* Load data */
g_pfnEEPROMMemRead(u32DataAddr, g_pstEEPROMBlock[i].pu32Data, (uint32_t)u16WordNum);
u16Result = EEPROM_CRC_Calc(g_pstEEPROMBlock[i].pu32Data, u16WordNum - 1U);
if ((uint16_t)(g_pstEEPROMBlock[i].pu32Data[u16WordNum - 1U]) == u16Result)
{
u8Loop = 0U;
}
}
}
if (u8Loop) /* CRC check fail */
{
u16Index--; /* Go to previous record */
if (u16IndexBkup >= u16Index)
{
u16Result = u16IndexBkup - u16Index;
}
else
{
u16Result = u16IndexBkup + (0xFFFFU - u16Index) + 1U;
}
if ((u16Result <= u16MaxRecordNum[0U] + u16MaxRecordNum[1U]) &&\
(u16Result <= EEPROM_OVER_SEARCH_RECORD_NUM))
{
if (u16RecordNum == 0U) /* Cross sector access */
{
if (g_pstEEPROMBlock[i].u8SectorOffset)
{
u32DataAddrBase -= (uint32_t)g_pstEEPROMBlock[i].u16BlockSize;
u16RecordNum = u16MaxRecordNum[0U];
if (u16RecordNum == 0U)
{
u8Loop = 0U;
g_pstEEPROMBlock[i].u8Status = EEPROM_BLOCK_ERROR;
}
else
{
u16RecordNum -= 1U;
}
}
else
{
u32DataAddrBase += g_pstEEPROMBlock[i].u16BlockSize;
u16RecordNum = u16MaxRecordNum[1U];
if (u16RecordNum == 0U)
{
u8Loop = 0U;
g_pstEEPROMBlock[i].u8Status = EEPROM_BLOCK_ERROR;
}
else
{
u16RecordNum -= 1U;
}
}
}
else
{
u16RecordNum--;
}
}
else
{
/* No correct data found, set error flag */
u8Loop = 0U;
g_pstEEPROMBlock[i].u8Status = EEPROM_BLOCK_ERROR;
}
}
}while(u8Loop);
}
}
}
}
uint8_t EEPROM_Access_Busy(void)
{
return g_stEEPROMAccess.u8State;
}
uint8_t EEPROM_Block_Access_Status(uint16_t u16BlockID)
{
uint8_t u8Status;
u8Status = EEPROM_BLOCK_ERROR;
if (u16BlockID < g_stEEPROMAccess.u16BlockNum)
{
u8Status = g_pstEEPROMBlock[u16BlockID].u8Status;
}
return u8Status;
}
/* u16Len : DWord(32-bit) number to be read */
/* Retval 0 - OK 1 - Error */
uint8_t EEPROM_Read_Block_Data(uint16_t u16BlockID, uint32_t u32Data[], uint16_t u16Len)
{
uint16_t i;
uint8_t u8Error;
u8Error = 1U;
if ((u16BlockID < g_stEEPROMAccess.u16BlockNum) && (u32Data != NULL) && (u16Len != 0U))
{
if ((g_pstEEPROMBlock[u16BlockID].u8Status == EEPROM_BLOCK_ACTIVE) && \
(u16Len <= (g_pstEEPROMBlock[u16BlockID].u16BlockSize - EEPROM_BLOCK_CTRL_BYTE_SIZE) / 4U))
{
for (i = 0U; i < u16Len; i++)
{
u32Data[i] = g_pstEEPROMBlock[u16BlockID].pu32Data[i + 1U];
}
u8Error = 0U;
}
}
return u8Error;
}
/* u16Len : DWord(32-bit) number to be written */
/* Retval 0 - OK 1 - Error */
uint8_t EEPROM_Write_Block_Data(uint16_t u16BlockID, uint32_t u32Data[], uint16_t u16Len)
{
uint16_t i;
uint8_t u8Error;
uint16_t u16WordNum;
uint16_t u16Result;
uint32_t u32EndAddr;
EEPROM_Ctrl_Data_un_t unCtrlData;
u8Error = 1U;
if ((g_stEEPROMAccess.u8State == EEPROM_WR_STATE_IDLE) && \
(g_stEEPROMAccess.u16BlockNum > u16BlockID) && (u32Data != NULL) && (u16Len != 0U))
{
if (u16Len <= (g_pstEEPROMBlock[u16BlockID].u16BlockSize - EEPROM_BLOCK_CTRL_BYTE_SIZE) / 4U)
{
g_stEEPROMAccess.u8State = EEPROM_WR_STATE_PROG;
u16WordNum = g_pstEEPROMBlock[u16BlockID].u16BlockSize / 4U - 1U; /* CRC checksum is ignored */
if (g_pstEEPROMBlock[u16BlockID].u8Status == EEPROM_BLOCK_ACTIVE)
{
g_pstEEPROMBlock[u16BlockID].u16RecordNum++;
if (g_pstEEPROMBlock[u16BlockID].u16RecordNum >= g_pstEEPROMBlock[u16BlockID].u16MaxRecordNum)
{
g_stEEPROMAccess.u8State = EEPROM_WR_STATE_ERASE;
g_pstEEPROMBlock[u16BlockID].u16RecordNum = 0U;
if (g_pstEEPROMBlock[u16BlockID].u8SectorOffset == 0U)
{
g_pstEEPROMBlock[u16BlockID].u8SectorOffset = 1U;
}
else
{
g_pstEEPROMBlock[u16BlockID].u8SectorOffset = 0U;
}
}
g_pstEEPROMBlock[u16BlockID].u16Index++;
unCtrlData.stField.u16Index = g_pstEEPROMBlock[u16BlockID].u16Index;
unCtrlData.stField.u16IndexInv = 0xFFFFU - unCtrlData.stField.u16Index;
g_pstEEPROMBlock[u16BlockID].pu32Data[0U] = unCtrlData.u32Word[0U];
}
else
{
g_stEEPROMAccess.u8State = EEPROM_WR_STATE_ERASE;
g_pstEEPROMBlock[u16BlockID].u16RecordNum = 0U;
g_pstEEPROMBlock[u16BlockID].u8SectorOffset = 0U;
g_pstEEPROMBlock[u16BlockID].u16Index = 0U;
g_pstEEPROMBlock[u16BlockID].pu32Data[0U] = 0xFFFF0000UL;
for (i = 1U; i < u16WordNum; i++)
{
g_pstEEPROMBlock[u16BlockID].pu32Data[i] = 0x00000000UL;
}
g_pstEEPROMBlock[u16BlockID].u8Status = EEPROM_BLOCK_ACTIVE;
}
u16Len += 1U;
for (i = 1U; i < u16Len; i++)
{
g_pstEEPROMBlock[u16BlockID].pu32Data[i] = u32Data[i - 1U];
}
u16Result = EEPROM_CRC_Calc(g_pstEEPROMBlock[u16BlockID].pu32Data, u16WordNum);
g_pstEEPROMBlock[u16BlockID].pu32Data[u16WordNum] = (uint32_t)u16Result;
g_stEEPROMAccess.u32ProgAddr = g_pstEEPROMBlock[u16BlockID].u32BaseAddr;
g_stEEPROMAccess.u32ProgAddr += (uint32_t)g_pstEEPROMBlock[u16BlockID].u16SectorSize * (uint32_t)g_pstEEPROMBlock[u16BlockID].u8SectorOffset;
g_stEEPROMAccess.u32ProgAddr += (uint32_t)g_pstEEPROMBlock[u16BlockID].u16BlockSize * (uint32_t)g_pstEEPROMBlock[u16BlockID].u16RecordNum;
g_stEEPROMAccess.u16ProgLen = g_pstEEPROMBlock[u16BlockID].u16BlockSize / 4U;
g_stEEPROMAccess.pu32ProgData = g_pstEEPROMBlock[u16BlockID].pu32Data;
if (g_stEEPROMAccess.u8State == EEPROM_WR_STATE_ERASE)
{
u32EndAddr = g_stEEPROMAccess.u32ProgAddr + (uint32_t)g_pstEEPROMBlock[u16BlockID].u16SectorSize - 1UL;
g_pfnEEPROMMemErase(g_stEEPROMAccess.u32ProgAddr, u32EndAddr);
}
else
{
g_pfnEEPROMMemWrite(g_stEEPROMAccess.u32ProgAddr, g_stEEPROMAccess.pu32ProgData, (uint32_t)g_stEEPROMAccess.u16ProgLen);
}
u8Error = 0U;
}
}
return u8Error;
}
void EEPROM_Mem_Access_Complete_Callback(void)
{
if (g_stEEPROMAccess.u8State == EEPROM_WR_STATE_ERASE)
{
g_stEEPROMAccess.u8State = EEPROM_WR_STATE_PROG;
g_pfnEEPROMMemWrite(g_stEEPROMAccess.u32ProgAddr, g_stEEPROMAccess.pu32ProgData, (uint32_t)g_stEEPROMAccess.u16ProgLen);
}
else
{
g_stEEPROMAccess.u8State = EEPROM_WR_STATE_IDLE;
}
}
static uint16_t EEPROM_CRC_Calc(uint32_t * pu32Data, uint16_t u16Len)
{
uint16_t i;
uint8_t u8CRCHi;
uint8_t u8CRCLo;
uint8_t u8Index;
uint8_t *pu8DataByte;
uint16_t u16CRCResult;
u16CRCResult = 0xFFFFU;
if (pu32Data != NULL)
{
u8CRCHi = 0xFFU;
u8CRCLo = 0xFFU;
u16Len <<= 2U; /* u16Len = u16Len * 4U */
pu8DataByte = (uint8_t *)pu32Data;
for (i = 0; i < u16Len; i++)
{
u8Index = u8CRCLo ^ pu8DataByte[i];
u8CRCLo = u8CRCHi ^ g_u8EEPROMCRCTableH[u8Index];
u8CRCHi = g_u8EEPROMCRCTableL[u8Index];
}
u16CRCResult = (uint16_t)u8CRCHi;
u16CRCResult <<= 8U;
u16CRCResult |= (uint16_t)u8CRCLo;
}
return u16CRCResult;
}