Posted on January 22, 2018 at 07:29Hello, Am using STM32F0 uC for interfacing with a AT24C64. I am not able to write sequentially to the EEPROM after one page, i.e 32 Bytes. Can someone please if the logic is wrong.
This is the code:
data[0]=0x00; //First word address 8bit
data[1]=0x00; //Second word address 8bit
for(i=2;i<34;i++)
{
data[i]=0x11;
}
HAL_I2C_Master_Transmit(&hi2c1, EEPROM_ADDRESS<<1, data, 34, 50); //data is int type,34 is number bytes of data
data[0]=0x00; //First word address 8bit
data[1]=0x20; //Second word address 8bit// Next Page
for(i=2;i<34;i++)
{
data[i]=0x22;
}
HAL_I2C_Master_Transmit(&hi2c1, EEPROM_ADDRESS<<1, data, 34, 50); //data is int type,34 is number bytes of data
while (1)
{
/* USER CODE END WHILE */
data[0]=0x00;
data[1]=0x00;
HAL_I2C_Master_Transmit(&hi2c1, EEPROM_ADDRESS<<1, data, 2, 50); //data is int type pointing to first address here
for(i=0;i<32;i++)
{
HAL_I2C_Master_Receive(&hi2c1, EEPROM_ADDRESS<<1, &dataout[i], 1, 50);//maximum is 32 byte data locations
}
data[0]=0x00;
data[1]=0x20;
HAL_I2C_Master_Transmit(&hi2c1, EEPROM_ADDRESS<<1, data, 2, 50); //data is int type pointing to first address here
for(i=0;i<32;i++)
{
HAL_I2C_Master_Receive(&hi2c1, EEPROM_ADDRESS<<1, &dataout_1[i], 1, 50);//maximum is 32 byte data locations
}
}
