Hi people,
I am using M24C04 EEPROM CHIP WHICH OPERATES (1.8 V -5.5 ).
I am checking my prototype,I found some issues.the initialization works ,I2C scan works fine but Iam unable to read or write .Can anyone help me to find what is wrong please
uint8_t writeData = 0xAB; // Data to write
uint8_t readData = 0; // Variable to store read data
uint32_t address = 0x50; // Target address
uint8_t write_data=0;
uint8_t read_data=0;
uint16_t i=1;
int chip_ok=0;
uint16_t check_ok=0;
// FUNCTION FOR CHECKING I2C SCAN ///
void I2C_Scan()
{
check_ok=0;
for(i = 0; i < 128; i++)
{ if (HAL_I2C_IsDeviceReady(&hi2c1, i << 1, 10, 100) == HAL_OK)
{
check_ok=1;
}
}
}
// MAIN FUNCTION //
int main(void)
{
/* USER CODE BEGIN 1 */
/* USER CODE END 1 */
/* MCU Configuration--------------------------------------------------------*/
/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
HAL_Init();
/* USER CODE BEGIN Init */
/* USER CODE END Init */
/* Configure the system clock */
SystemClock_Config();
/* USER CODE BEGIN SysInit */
/* USER CODE END SysInit */
/* Initialize all configured peripherals */
MX_GPIO_Init();
MX_ADC1_Init();
MX_TIM3_Init();
MX_RTC_Init();
MX_TIM17_Init();
/* USER CODE BEGIN 2 */
if(EEPRMA2_M24_Init(EEPRMA2_M24C02_0) == BSP_ERROR_NONE)
{
chip_ok=1;
// DOUBLEFLASH();
}
else
{
chip_ok=0;
}
//do_defaults();
HAL_TIM_Base_Start_IT(&htim17);
HAL_Delay(100);
HAL_ADC_Stop(&hadc1);
DelayUS(100);
HAL_ADCEx_Calibration_Start(&hadc1);
DelayUS(1000);
HAL_ADC_Start(&hadc1);
HAL_Delay(100);
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
I2C_Scan();
if (EEPRMA2_M24_WriteByte(EEPRMA2_M24C02_0, &writeData, address) == BSP_ERROR_NONE)
{
write_data=1;
if (EEPRMA2_M24_ReadByte(EEPRMA2_M24C02_0, &readData, address) == BSP_ERROR_NONE)
{
read_data=1;
} else
{
read_data=0;
}
}
else
{
write_data=0;
}
}
/* USER CODE END 3 */
}
// READ AND WRITE FUNCTION//
int ReadByte(int selectd)
{
uint8_t readdata = 0;
EEPRMA2_M24_ReadData(M24_INSTANCE,&readdata,selectd,1);
return readdata;
}
int ProgramByte(uint16_t location,uint8_t writedata)
{
EEPRMA2_M24_WriteData(M24_INSTANCE,&writedata,location,1);
}
// HEADER FILE DEFINITION USED //
#ifndef INC_EEPROM_H_
#define INC_EEPROM_H_
#define M24_INSTANCE EEPRMA2_M24C02_0
int ProgramByte(uint16_t location, uint8_t writedata);
#endif /* INC_EEPROM_H_ */
