/**
* @brief Wait for EEPROM Standby state.
*
* @note This function allows to wait and check that EEPROM has finished the
* last operation. It is mostly used after Write operation: after receiving
* the buffer to be written, the EEPROM may need additional time to actually
* perform the write operation. During this time, it doesn't answer to
* I2C packets addressed to it. Once the write operation is complete
* the EEPROM responds to its address.
*
* @retval EEPROM_OK (0) if operation is correctly performed, else return value
* different from EEPROM_OK (0) or the timeout user callback.
*/
uint32_t BSP_EEPROM_WaitEepromStandbyState(void)
{
HAL_StatusTypeDef status;
EEPROMTimeout = HAL_GetTick();
do
{
if((HAL_GetTick() - EEPROMTimeout) < EEPROM_LONG_TIMEOUT)
{
BSP_EEPROM_TIMEOUT_UserCallback();
return EEPROM_TIMEOUT;
}
status = EEPROM_IO_IsDeviceReady(EEPROMAddress, EEPROM_MAX_TRIALS_NUMBER);
}while (status == HAL_BUSY);
/* Check if the maximum allowed number of trials has bee reached */
if (status != HAL_OK)
{
/* If the maximum number of trials has been reached, exit the function */
BSP_EEPROM_TIMEOUT_UserCallback();
return EEPROM_FAIL;
}
return EEPROM_OK;
}
/**
* @brief Initializes peripherals used by the I2C EEPROM driver.
*
* @note There are 2 different versions of M24LR64 (A01 & A02).
* Then try to connect on 1st one (EEPROM_I2C_ADDRESS_A01)
* and if problem, check the 2nd one (EEPROM_I2C_ADDRESS_A02)
* @retval EEPROM_OK (0) if operation is correctly performed, else return value
* different from EEPROM_OK (0)
*/
uint32_t BSP_EEPROM_Init(void)
{
/* I2C Initialization */
EEPROM_IO_Init();
/* Select the EEPROM address for A01 and check if OK */
EEPROMAddress = EEPROM_I2C_ADDRESS_A01;
if(EEPROM_IO_IsDeviceReady(EEPROMAddress, EEPROM_MAX_TRIALS) != HAL_OK)
{
/* Select the EEPROM address for A02 and check if OK */
EEPROMAddress = EEPROM_I2C_ADDRESS_A02;
if(EEPROM_IO_IsDeviceReady(EEPROMAddress, EEPROM_MAX_TRIALS) != HAL_OK)
{
return EEPROM_FAIL;
}
}
return EEPROM_OK;
}
/**
* @brief Waits for EEPROM Standby state.
*
* @note This function allows to wait and check that EEPROM has finished the
* last operation. It is mostly used after Write operation: after receiving
* the buffer to be written, the EEPROM may need additional time to actually
* perform the write operation. During this time, it doesn't answer to
* I2C packets addressed to it. Once the write operation is complete
* the EEPROM responds to its address.
*
* @param None
* @retval EEPROM_OK (0) if operation is correctly performed, else return value
* different from EEPROM_OK (0) or the timeout user callback.
*/
static uint32_t EEPROM_WaitEepromStandbyState(void)
{
/* Check if the maximum allowed number of trials has bee reached */
if(EEPROM_IO_IsDeviceReady(EEPROM_I2C_ADDRESS, EEPROM_MAX_TRIALS) != HAL_OK)
{
/* If the maximum number of trials has been reached, exit the function */
BSP_EEPROM_TIMEOUT_UserCallback();
return EEPROM_TIMEOUT;
}
return EEPROM_OK;
}
/**
* @brief Initializes peripherals used by the I2C EEPROM driver.
*
* @note There are 2 different versions of M24LR64 (A01 & A02).
* Then try to connect on 1st one (EEPROM_I2C_ADDRESS_A01)
* and if problem, check the 2nd one (EEPROM_I2C_ADDRESS_A02)
* @retval EEPROM_OK (0) if operation is correctly performed, else return value
* different from EEPROM_OK (0)
*/
static uint32_t EEPROM_I2C_Init(void)
{
EEPROM_IO_Init();
/*Select the EEPROM address for M24LR64 A02 and check if OK*/
EEPROMAddress = EEPROM_ADDRESS_M24LR64_A01;
EEPROMPageSize = EEPROM_PAGESIZE_M24LR64;
if (EEPROM_IO_IsDeviceReady(EEPROMAddress, EEPROM_MAX_TRIALS) != HAL_OK)
{
/*Select the EEPROM address for M24LR64 A01 and check if OK*/
EEPROMAddress = EEPROM_ADDRESS_M24LR64_A02;
EEPROMPageSize = EEPROM_PAGESIZE_M24LR64;
if (EEPROM_IO_IsDeviceReady(EEPROMAddress, EEPROM_MAX_TRIALS) != HAL_OK)
{
return EEPROM_FAIL;
}
}
return EEPROM_OK;
}
