STM8S001J EEPROM PROBLEMS

[AAraf.1]

Hello

I'm using STM8S001j in my project

the Project is simply an output on PB4 and output on PD6

I needed to store in the EEPROM data every time the input is getting low 

I noticed that some times the data is recorded and some times not 

I monitored the EEPROM using the programmer to read the data and had seen that some times data written some times erased

I wrote the write code several times to make sure that it works but not

Here's the code

unsigned short tim2_count;

bool t_flag ;

unsigned int DF_count = 1;

unsigned int EE_add_RW = EE_add_start;

void GPIO_conf(void);

void clk_conf(void);

void Tim2_conf(unsigned short T_counts);

void EEPROM_conf(void);

void EE_R_V(void);

main()

{

unsigned char delay_count = 0;

unsigned short temp_count = 0;

GPIO_conf();

clk_conf();

EEPROM_conf();

Tim2_conf(124); // 1msec

GPIO_WriteLow(GPIOB, GPIO_PIN_4);

{

unsigned char EE_temp = 0;

unsigned char temp1 = 0;

unsigned char temp2 = 0;

// unsigned int add = 0x4003;

EE_temp = FLASH_ReadByte(0x4000);

EE_temp = FLASH_ReadByte(0x4000);

EE_temp = FLASH_ReadByte(0x4000);

EE_temp = FLASH_ReadByte(0x4000);

EE_temp = FLASH_ReadByte(0x4000);

if(EE_temp == 0)

{

FLASH_Unlock(FLASH_MEMTYPE_DATA);

FLASH_ProgramByte(0x4000, 0x02);

FLASH_ProgramByte(0x4002, 0xB0);

FLASH_ProgramByte(0x4003, 0x04);

temp1 = FLASH_ReadByte(0x4002);

temp2 = FLASH_ReadByte(0x4003);

if((temp1 == 0xb0) && (temp2 == 0x04))

FLASH_Lock(FLASH_MEMTYPE_DATA);

else

{

FLASH_ProgramByte(0x4000, 0x02);

FLASH_ProgramByte(0x4002, 0xB0);

FLASH_ProgramByte(0x4003, 0x04);

}

if((temp1 == 0xb0) && (temp2 == 0x04))

FLASH_Lock(FLASH_MEMTYPE_DATA);

else

{

FLASH_ProgramByte(0x4000, 0x02);

FLASH_ProgramByte(0x4002, 0xB0);

FLASH_ProgramByte(0x4003, 0x04);

}

}

else

{

EE_add_RW = 0x4000 + EE_temp;

temp1 = FLASH_ReadByte(0x4002);

temp2 = FLASH_ReadByte(0x4003);

temp1 = FLASH_ReadByte(0x4002);

temp2 = FLASH_ReadByte(0x4003);

temp1 = FLASH_ReadByte(0x4002);

temp2 = FLASH_ReadByte(0x4003);

DF_count = (temp2 << 8) | temp1;

}

}

while(1)

{

if(DF_count < 1801)

GPIO_WriteLow(GPIOB, GPIO_PIN_4);

else if(DF_count < 1831)

GPIO_WriteHigh(GPIOB, GPIO_PIN_4);

else

DF_count = 1;

if(tim2_count == 0X03E8)

{

DF_count ++;

t_flag ^= 1;

tim2_count = 0;

}

if(GPIO_ReadInputPin(GPIOD, GPIO_PIN_6) == FALSE)

{

if((temp_count <= 100) )

{

temp_count ++;

}

else

{

unsigned char low = 0;

unsigned char high = 0;

unsigned char temp1 = 0;

unsigned char temp2 = 0;

low = DF_count & 0xff;

high = DF_count >> 8;

FLASH_Unlock(FLASH_MEMTYPE_DATA);

FLASH_ProgramByte(0x4002, low);

FLASH_ProgramByte(0x4003, high);

temp1 = FLASH_ReadByte(0x4002);

temp2 = FLASH_ReadByte(0x4003);

if((temp1 == low) && (temp2 == high))

FLASH_Lock(FLASH_MEMTYPE_DATA);

else

{

FLASH_ProgramByte(0x4002, low);

FLASH_ProgramByte(0x4003, high);

temp1 = FLASH_ReadByte(0x4002);

temp2 = FLASH_ReadByte(0x4003);

if((temp1 == low) && (temp2 == high))

FLASH_Lock(FLASH_MEMTYPE_DATA);

else

{

FLASH_ProgramByte(0x4002, low);

FLASH_ProgramByte(0x4003, high);

temp1 = FLASH_ReadByte(0x4002);

temp2 = FLASH_ReadByte(0x4003);

FLASH_Lock(FLASH_MEMTYPE_DATA);

}

}

}

}

}

}

[AAraf.1]

here is the missing part of the code

void GPIO_conf(void)

{

GPIO_DeInit(GPIOF);

GPIO_DeInit(GPIOE);

GPIO_DeInit(GPIOD);

GPIO_DeInit(GPIOC);

GPIO_DeInit(GPIOB);

GPIO_DeInit(GPIOA);

GPIO_Init(GPIOA, (GPIO_Pin_TypeDef)(GPIO_PIN_2), GPIO_MODE_OUT_PP_LOW_SLOW);

GPIO_Init(GPIOB, (GPIO_Pin_TypeDef)(GPIO_PIN_0)|(GPIO_PIN_1)|(GPIO_PIN_2)|(GPIO_PIN_3)|(GPIO_PIN_6)|(GPIO_PIN_7),GPIO_MODE_OUT_PP_LOW_SLOW);

GPIO_Init(GPIOC, (GPIO_Pin_TypeDef)(GPIO_PIN_1)|(GPIO_PIN_2)|(GPIO_PIN_7),GPIO_MODE_OUT_PP_LOW_SLOW);

GPIO_Init(GPIOD, (GPIO_Pin_TypeDef)(GPIO_PIN_0)|(GPIO_PIN_2)|(GPIO_PIN_4)|(GPIO_PIN_7), GPIO_MODE_OUT_PP_LOW_SLOW);

GPIO_Init(GPIOE, GPIO_PIN_5, GPIO_MODE_OUT_PP_LOW_SLOW);

GPIO_Init(GPIOF, GPIO_PIN_4, GPIO_MODE_OUT_PP_LOW_SLOW);

GPIO_Init(GPIOD, GPIO_PIN_6, GPIO_MODE_IN_FL_NO_IT);

//GPIO_Init(GPIOA, GPIO_PIN_1, GPIO_MODE_IN_FL_NO_IT);

//GPIO_Init(GPIOC, GPIO_PIN_5, GPIO_MODE_OUT_OD_HIZ_SLOW);

//GPIO_Init(GPIOB, GPIO_PIN_5, GPIO_MODE_OUT_OD_HIZ_SLOW);

GPIO_Init(GPIOB, GPIO_PIN_4, GPIO_MODE_OUT_PP_LOW_SLOW);

}

void clk_conf()

{

CLK_DeInit();

CLK_HSECmd(DISABLE);

CLK_LSICmd(DISABLE);

CLK_HSICmd(ENABLE);

while(CLK_GetFlagStatus(CLK_FLAG_HSIRDY) == FALSE);

CLK_ClockSwitchCmd(ENABLE);

CLK_HSIPrescalerConfig(CLK_PRESCALER_HSIDIV4); // 16MHz frequency

CLK_SYSCLKConfig(CLK_PRESCALER_CPUDIV1);

CLK_ClockSwitchConfig(CLK_SWITCHMODE_AUTO,CLK_SOURCE_HSI,DISABLE,

CLK_CURRENTCLOCKSTATE_ENABLE);

CLK_PeripheralClockConfig(CLK_PERIPHERAL_SPI, DISABLE);

CLK_PeripheralClockConfig(CLK_PERIPHERAL_I2C, DISABLE);

CLK_PeripheralClockConfig(CLK_PERIPHERAL_ADC, DISABLE);

CLK_PeripheralClockConfig(CLK_PERIPHERAL_AWU, DISABLE);

CLK_PeripheralClockConfig(CLK_PERIPHERAL_UART1, DISABLE);

CLK_PeripheralClockConfig(CLK_PERIPHERAL_TIMER1, DISABLE);

CLK_PeripheralClockConfig(CLK_PERIPHERAL_TIMER2, ENABLE);

CLK_PeripheralClockConfig(CLK_PERIPHERAL_TIMER4, DISABLE);

}

void Tim2_conf(unsigned short T_counts)

{

TIM2_DeInit();

// @ 16MHZ rescaler 128 and 1250 counts gives 10m sec

TIM2_TimeBaseInit(TIM2_PRESCALER_32, T_counts); 

TIM2_ITConfig(TIM2_IT_UPDATE, ENABLE);

TIM2_Cmd(ENABLE);

enableInterrupts();

}

void EEPROM_conf(void)

{

FLASH_DeInit();

}