/**
* @brief Reads a block of data from the OneNAND memory using synchronous mode.
* @param pBuffer: pointer to the buffer that receives the data read from the
* OneNAND memory.
* @param ReadAddr: OneNAND memory internal address to read from.
* @param NumHalfwordToRead: number of half-words to read.
* @retval None
*/
void OneNAND_SynchronousRead(uint16_t* pBuffer, OneNAND_ADDRESS Address, uint32_t NumHalfwordToRead)
{
uint16_t index = 0;
uint16_t status = 0;
/* Set the asynchronous read mode */
OneNAND_WRITE(BANK1_ONENAND1_ADDR + OneNAND_REG_SYSTEMCONFIGURATION, 0xB4C0);
/* Load data from the read address to the DATA RAM 1 setor 1 */
*(__IO uint16_t *)(BANK1_ONENAND1_ADDR + OneNAND_REG_STARTADDRESS1) = Address.Block; /* NAND Flash block address*/
*(__IO uint16_t *)(BANK1_ONENAND1_ADDR + OneNAND_REG_STARTADDRESINT8_T) = (uint16_t)(Address.Page << 2);
*(__IO uint16_t *)(BANK1_ONENAND1_ADDR + OneNAND_REG_STARTBUFFER) = OneNAND_DATA_RAM_1_0_REG;
*(__IO uint16_t *)(BANK1_ONENAND1_ADDR + OneNAND_REG_INTERRUPT) = 0x0000;
*(__IO uint16_t *)(BANK1_ONENAND1_ADDR + OneNAND_REG_COMMAND) = OneNAND_CMD_LOAD; /* Command */
/* Wait till the command is completed */
status = *(__IO uint16_t *)(BANK1_ONENAND1_ADDR + OneNAND_REG_INTERRUPT);
while((status & 0x8000) != 0x8000)
{
status = *(__IO uint16_t *)(BANK1_ONENAND1_ADDR + OneNAND_REG_INTERRUPT);
}
/* Read Controller status */
status = *(__IO uint16_t *)(BANK1_ONENAND1_ADDR + OneNAND_REG_CONTROLSTATUS);
/* Read data */
for(; NumHalfwordToRead != 0x00; NumHalfwordToRead--) /* While there is data to read */
{
*pBuffer++ = *(__IO uint16_t *)((BANK1_ONENAND1_ADDR + OneNAND_DATA_RAM_1_0_ADD + 2*index));
index++;
}
}
/**
* @brief Reads OneNAND memory's Manufacturer and Device Code.
* @param OneNAND_ID: pointer to a OneNAND_IDTypeDef structure which will hold
* the Manufacturer and Device Code.
* @retval None
*/
void OneNAND_ReadID(OneNAND_IDTypeDef* OneNAND_ID)
{
/* Read ID command */
OneNAND_WRITE(Bank1_NOR1_ADDR + OneNAND_REG_COMMAND, OneNAND_CMD_READ_ID);
/* Read ID data */
OneNAND_ID->Manufacturer_ID = *(__IO uint16_t *)(Bank1_NOR1_ADDR + OneNAND_REG_MANUFACTERID);
OneNAND_ID->Device_ID = *(__IO uint16_t *)(Bank1_NOR1_ADDR + OneNAND_REG_DEVICEID);
}
/**
* @brief Reads a block of data from the OneNAND memory.
* @param pBuffer : pointer to the buffer that receives the data read from the
* OneNAND memory.
* @param ReadAddr : OneNAND memory internal address to read from.
* @param NumHalfwordToRead : number of half-words to read.
* @retval None
*/
void OneNAND_SynchronousRead(uint16_t* pBuffer, uint32_t ReadAddr, uint32_t NumHalfwordToRead)
{
uint16_t datatmp = 0x0;
datatmp = *(__IO uint16_t *)(Bank1_NOR1_ADDR + OneNAND_REG_SYSTEMCONFIGURATION);
/* Set the asynchronous read mode */
OneNAND_WRITE(Bank1_NOR1_ADDR + OneNAND_REG_SYSTEMCONFIGURATION, (datatmp|0x8000));
/* Read data */
for(; NumHalfwordToRead != 0x00; NumHalfwordToRead--) /* while there is data to read */
{
/* Read a Halfword from the memory */
*pBuffer++ = *(__IO uint16_t *)((Bank1_NOR1_ADDR + ReadAddr));
ReadAddr = ReadAddr + 2;
}
}
/**
* @brief Resets the OneNAND memory.
* @param None
* @retval None
*/
void OneNAND_Reset(void)
{
OneNAND_WRITE(ONENAND_BOOTPARTITION_ADDR, OneNAND_CMD_RESET);
}
