/******************************************************************************
* Function Name : FSMC_NOR_ReadHalfWord
* Description : Reads a half-word from the NOR memory.
* Input : - ReadAddr : NOR memory internal address to read from.
* Output : None
* Return : Half-word read from the NOR memory
*******************************************************************************/
u16 FSMC_NOR_ReadHalfWord(u32 ReadAddr)
{
NOR_WRITE(ADDR_SHIFT(0x005555), 0x00AA);
NOR_WRITE(ADDR_SHIFT(0x002AAA), 0x0055);
NOR_WRITE((Bank1_NOR2_ADDR + ReadAddr), 0x00F0 );
return (*(vu16 *)((Bank1_NOR2_ADDR + ReadAddr)));
}
/*******************************************************************************
* Function Name : FSMC_NOR_ReadBuffer
* Description : Reads a block of data from the FSMC NOR memory.
* Input : - pBuffer : pointer to the buffer that receives the data read
* from the NOR memory.
* - ReadAddr : NOR memory internal address to read from.
* - NumHalfwordToRead : number of Half word to read.
* Output : None
* Return : None
*******************************************************************************/
void FSMC_NOR_ReadBuffer(u16* pBuffer, u32 ReadAddr, u32 NumHalfwordToRead)
{
NOR_WRITE(ADDR_SHIFT(0x05555), 0x00AA);
NOR_WRITE(ADDR_SHIFT(0x02AAA), 0x0055);
NOR_WRITE((Bank1_NOR2_ADDR + ReadAddr), 0x00F0);
for(; NumHalfwordToRead != 0x00; NumHalfwordToRead--) /* while there is data to read */
{
/* Read a Halfword from the NOR */
*pBuffer++ = *(vu16 *)((Bank1_NOR2_ADDR + ReadAddr));
ReadAddr = ReadAddr + 2;
}
}
/******************************************************************************
* Function Name : FSMC_NOR_ReturnToReadMode
* Description : Returns the NOR memory to Read mode.
* Input : None
* Output : None
* Return : NOR_SUCCESS
*******************************************************************************/
NOR_Status FSMC_NOR_ReturnToReadMode(void)
{
NOR_WRITE(Bank1_NOR2_ADDR, 0x00F0);
return (NOR_SUCCESS);
}
/******************************************************************************
* Function Name : FSMC_NOR_Reset
* Description : Returns the NOR memory to Read mode and resets the errors in
* the NOR memory Status Register.
* Input : None
* Output : None
* Return : NOR_SUCCESS
*******************************************************************************/
NOR_Status FSMC_NOR_Reset(void)
{
NOR_WRITE(ADDR_SHIFT(0x005555), 0x00AA);
NOR_WRITE(ADDR_SHIFT(0x002AAA), 0x0055);
NOR_WRITE(Bank1_NOR2_ADDR, 0x00F0);
return (NOR_SUCCESS);
}
/******************************************************************************
* Function Name : FSMC_NOR_GetStatus
* Description : Returns the NOR operation status.
* Input : - Timeout: NOR progamming Timeout
* Output : None
* Return : NOR_Status:The returned value can be: NOR_SUCCESS, NOR_ERROR
* or NOR_TIMEOUT
*******************************************************************************/
NOR_Status FSMC_NOR_GetStatus(u32 Timeout)
{
u16 val1 = 0x00, val2 = 0x00;
NOR_Status status = NOR_ONGOING;
u32 timeout = Timeout;
/* Poll on NOR memory Ready/Busy signal ------------------------------------*/
while((GPIO_ReadInputDataBit(GPIOD, GPIO_Pin_6) != RESET) && (timeout > 0))
{
timeout--;
}
timeout = Timeout;
