/**
* @brief Wait for EEPROM SPI Standby state.
*
* @note This function allows to wait and check that EEPROM has finished the
* last operation. It is mostly used after Write operation.
*
* @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_SPI_WaitEepromStandbyState(void)
{
if(EEPROM_SPI_IO_WaitEepromStandbyState() != HAL_OK)
{
BSP_EEPROM_TIMEOUT_UserCallback();
return EEPROM_TIMEOUT;
}
return EEPROM_OK;
}
/**
* @brief Write data to SPI EEPROM driver
* @param MemAddress: Internal memory address
* @param pBuffer: Pointer to data buffer
* @param BufferSize: Amount of data to be read
* @retval HAL_StatusTypeDef HAL Status
*/
HAL_StatusTypeDef EEPROM_SPI_IO_WriteData(uint16_t MemAddress, uint8_t* pBuffer, uint32_t BufferSize)
{
/*!< Enable the write access to the EEPROM */
/*!< Select the EEPROM: Chip Select low */
EEPROM_CS_LOW();
/*!< Send "Write Enable" instruction */
SPIx_Write(EEPROM_CMD_WREN);
/*!< Deselect the EEPROM: Chip Select high */
EEPROM_CS_HIGH();
/*!< Select the EEPROM: Chip Select low */
EEPROM_CS_LOW();
/*!< Send "Write to Memory " instruction */
/* Send the byte */
SPIx_Write(EEPROM_CMD_WRITE);
/*!< Send MemAddress high nibble address byte to write to */
SPIx_Write((MemAddress & 0xFF0000) >> 16);
/*!< Send MemAddress medium nibble address byte to write to */
SPIx_Write((MemAddress & 0xFF00) >> 8);
/*!< Send MemAddress low nibble address byte to write to */
SPIx_Write(MemAddress & 0xFF);
/*!< while there is data to be written on the EEPROM */
while ((BufferSize)--)
{
/*!< Send the current byte */
SPIx_Write(*pBuffer);
/*!< Point on the next byte to be written */
pBuffer++;
}
/*!< Deselect the EEPROM: Chip Select high */
EEPROM_CS_HIGH();
/*!< Wait the end of EEPROM writing */
EEPROM_SPI_IO_WaitEepromStandbyState();
/*!< Disable the write access to the EEROM */
EEPROM_CS_LOW();
/*!< Send "Write Disable" instruction */
SPIx_Write(EEPROM_CMD_WRDI);
/*!< Deselect the EEPROM: Chip Select high */
EEPROM_CS_HIGH();
return HAL_OK;
}
