596 lines
24 KiB
C
596 lines
24 KiB
C
/*----------------------------------------------------------------------------
|
|
* ATMEL Microcontroller Software Support - ROUSSET -
|
|
*----------------------------------------------------------------------------
|
|
* The software is delivered "AS IS" without warranty or condition of any
|
|
* kind, either express, implied or statutory. This includes without
|
|
* limitation any warranty or condition with respect to merchantability or
|
|
* fitness for any particular purpose, or against the infringements of
|
|
* intellectual property rights of others.
|
|
*----------------------------------------------------------------------------
|
|
* File Name : at45c.h
|
|
* Object :
|
|
*
|
|
* 1.0 10/12/03 HIi : Creation.
|
|
* 1.01 03/05/04 HIi : Bug Fix in AT91F_DataFlashWaitReady() Function.
|
|
*----------------------------------------------------------------------------
|
|
*/
|
|
#include "config.h"
|
|
#include "stdio.h"
|
|
#include "AT91RM9200.h"
|
|
#include "lib_AT91RM9200.h"
|
|
#include "dataflash.h"
|
|
#include "main.h"
|
|
|
|
|
|
/*----------------------------------------------------------------------------*/
|
|
/* \fn AT91F_SpiInit */
|
|
/* \brief SPI Low level Init */
|
|
/*----------------------------------------------------------------------------*/
|
|
void AT91F_SpiInit(void) {
|
|
/* Configure PIOs */
|
|
AT91C_BASE_PIOA->PIO_ASR = AT91C_PA3_NPCS0 | AT91C_PA4_NPCS1 |
|
|
AT91C_PA1_MOSI | AT91C_PA5_NPCS2 |
|
|
AT91C_PA6_NPCS3 | AT91C_PA0_MISO |
|
|
AT91C_PA2_SPCK;
|
|
AT91C_BASE_PIOA->PIO_PDR = AT91C_PA3_NPCS0 | AT91C_PA4_NPCS1 |
|
|
AT91C_PA1_MOSI | AT91C_PA5_NPCS2 |
|
|
AT91C_PA6_NPCS3 | AT91C_PA0_MISO |
|
|
AT91C_PA2_SPCK;
|
|
/* Enable CLock */
|
|
AT91C_BASE_PMC->PMC_PCER = 1 << AT91C_ID_SPI;
|
|
|
|
/* Reset the SPI */
|
|
AT91C_BASE_SPI->SPI_CR = AT91C_SPI_SWRST;
|
|
|
|
/* Configure SPI in Master Mode with No CS selected !!! */
|
|
AT91C_BASE_SPI->SPI_MR = AT91C_SPI_MSTR | AT91C_SPI_MODFDIS | AT91C_SPI_PCS;
|
|
|
|
/* Configure CS0 and CS3 */
|
|
*(AT91C_SPI_CSR + 0) = AT91C_SPI_CPOL | (AT91C_SPI_DLYBS & DATAFLASH_TCSS) |
|
|
(AT91C_SPI_DLYBCT & DATAFLASH_TCHS) |
|
|
((AT91C_MASTER_CLOCK / (2*AT91C_SPI_CLK)) << 8);
|
|
*(AT91C_SPI_CSR + 3) = AT91C_SPI_CPOL | (AT91C_SPI_DLYBS & DATAFLASH_TCSS) |
|
|
(AT91C_SPI_DLYBCT & DATAFLASH_TCHS) |
|
|
((AT91C_MASTER_CLOCK / (2*AT91C_SPI_CLK)) << 8);
|
|
}
|
|
|
|
|
|
/*----------------------------------------------------------------------------*/
|
|
/* \fn AT91F_SpiEnable */
|
|
/* \brief Enable SPI chip select */
|
|
/*----------------------------------------------------------------------------*/
|
|
static void AT91F_SpiEnable(int cs) {
|
|
switch(cs) {
|
|
case 0: /* Configure SPI CS0 for Serial DataFlash AT45DBxx */
|
|
AT91C_BASE_SPI->SPI_MR &= 0xFFF0FFFF;
|
|
AT91C_BASE_SPI->SPI_MR |= ((AT91C_SPI_PCS0_SERIAL_DATAFLASH << 16) & AT91C_SPI_PCS);
|
|
break;
|
|
case 3: /* Configure SPI CS3 for Serial DataFlash Card */
|
|
/* Set up PIO SDC_TYPE to switch on DataFlash Card and not MMC/SDCard */
|
|
AT91C_BASE_PIOB->PIO_PER = AT91C_PIO_PB7; /* Set in PIO mode */
|
|
AT91C_BASE_PIOB->PIO_OER = AT91C_PIO_PB7; /* Configure in output */
|
|
/* Clear Output */
|
|
AT91C_BASE_PIOB->PIO_CODR = AT91C_PIO_PB7;
|
|
/* Configure PCS */
|
|
AT91C_BASE_SPI->SPI_MR &= 0xFFF0FFFF;
|
|
AT91C_BASE_SPI->SPI_MR |= ((AT91C_SPI_PCS3_DATAFLASH_CARD<<16) & AT91C_SPI_PCS);
|
|
break;
|
|
}
|
|
|
|
/* SPI_Enable */
|
|
AT91C_BASE_SPI->SPI_CR = AT91C_SPI_SPIEN;
|
|
}
|
|
|
|
/*----------------------------------------------------------------------------*/
|
|
/* \fn AT91F_SpiWrite */
|
|
/* \brief Set the PDC registers for a transfert */
|
|
/*----------------------------------------------------------------------------*/
|
|
static unsigned int AT91F_SpiWrite(AT91PS_DataflashDesc pDesc)
|
|
{
|
|
unsigned int timeout;
|
|
|
|
AT91C_BASE_SPI->SPI_PTCR = AT91C_PDC_TXTDIS + AT91C_PDC_RXTDIS;
|
|
|
|
/* Initialize the Transmit and Receive Pointer */
|
|
AT91C_BASE_SPI->SPI_RPR = (unsigned int)pDesc->rx_cmd_pt ;
|
|
AT91C_BASE_SPI->SPI_TPR = (unsigned int)pDesc->tx_cmd_pt ;
|
|
|
|
/* Intialize the Transmit and Receive Counters */
|
|
AT91C_BASE_SPI->SPI_RCR = pDesc->rx_cmd_size;
|
|
AT91C_BASE_SPI->SPI_TCR = pDesc->tx_cmd_size;
|
|
|
|
if ( pDesc->tx_data_size != 0 ) {
|
|
/* Initialize the Next Transmit and Next Receive Pointer */
|
|
AT91C_BASE_SPI->SPI_RNPR = (unsigned int)pDesc->rx_data_pt ;
|
|
AT91C_BASE_SPI->SPI_TNPR = (unsigned int)pDesc->tx_data_pt ;
|
|
|
|
/* Intialize the Next Transmit and Next Receive Counters */
|
|
AT91C_BASE_SPI->SPI_RNCR = pDesc->rx_data_size ;
|
|
AT91C_BASE_SPI->SPI_TNCR = pDesc->tx_data_size ;
|
|
}
|
|
|
|
/* ARM simple, non interrupt dependent timer */
|
|
timeout = 0;
|
|
|
|
AT91C_BASE_SPI->SPI_PTCR = AT91C_PDC_TXTEN + AT91C_PDC_RXTEN;
|
|
while(!(AT91C_BASE_SPI->SPI_SR & AT91C_SPI_RXBUFF));
|
|
|
|
AT91C_BASE_SPI->SPI_PTCR = AT91C_PDC_TXTDIS + AT91C_PDC_RXTDIS;
|
|
|
|
if (timeout >= AT91C_DATAFLASH_TIMEOUT){
|
|
return AT91C_DATAFLASH_ERROR;
|
|
}
|
|
|
|
return AT91C_DATAFLASH_OK;
|
|
}
|
|
|
|
|
|
/*----------------------------------------------------------------------*/
|
|
/* \fn AT91F_DataFlashSendCommand */
|
|
/* \brief Generic function to send a command to the dataflash */
|
|
/*----------------------------------------------------------------------*/
|
|
static AT91S_DataFlashStatus AT91F_DataFlashSendCommand(
|
|
AT91PS_DataFlash pDataFlash,
|
|
unsigned char OpCode,
|
|
unsigned int CmdSize,
|
|
unsigned int DataflashAddress)
|
|
{
|
|
unsigned int adr;
|
|
|
|
/* process the address to obtain page address and byte address */
|
|
adr = ((DataflashAddress / (pDataFlash->pDevice->pages_size))
|
|
<< pDataFlash->pDevice->page_offset) +
|
|
(DataflashAddress % (pDataFlash->pDevice->pages_size));
|
|
|
|
/* fill the command buffer */
|
|
pDataFlash->pDataFlashDesc->command[0] = OpCode;
|
|
if (pDataFlash->pDevice->pages_number >= 16384)
|
|
{
|
|
pDataFlash->pDataFlashDesc->command[1] = (unsigned char)((adr & 0x0F000000) >> 24);
|
|
pDataFlash->pDataFlashDesc->command[2] = (unsigned char)((adr & 0x00FF0000) >> 16);
|
|
pDataFlash->pDataFlashDesc->command[3] = (unsigned char)((adr & 0x0000FF00) >> 8);
|
|
pDataFlash->pDataFlashDesc->command[4] = (unsigned char)(adr & 0x000000FF);
|
|
}
|
|
else
|
|
{
|
|
pDataFlash->pDataFlashDesc->command[1] = (unsigned char)((adr & 0x00FF0000) >> 16);
|
|
pDataFlash->pDataFlashDesc->command[2] = (unsigned char)((adr & 0x0000FF00) >> 8);
|
|
pDataFlash->pDataFlashDesc->command[3] = (unsigned char)(adr & 0x000000FF) ;
|
|
pDataFlash->pDataFlashDesc->command[4] = 0;
|
|
}
|
|
pDataFlash->pDataFlashDesc->command[5] = 0;
|
|
pDataFlash->pDataFlashDesc->command[6] = 0;
|
|
pDataFlash->pDataFlashDesc->command[7] = 0;
|
|
|
|
/* Initialize the SpiData structure for the spi write fuction */
|
|
pDataFlash->pDataFlashDesc->tx_cmd_pt = pDataFlash->pDataFlashDesc->command ;
|
|
pDataFlash->pDataFlashDesc->tx_cmd_size = CmdSize ;
|
|
pDataFlash->pDataFlashDesc->rx_cmd_pt = pDataFlash->pDataFlashDesc->command ;
|
|
pDataFlash->pDataFlashDesc->rx_cmd_size = CmdSize ;
|
|
|
|
return AT91F_SpiWrite(pDataFlash->pDataFlashDesc);
|
|
}
|
|
|
|
|
|
/*----------------------------------------------------------------------*/
|
|
/* \fn AT91F_DataFlashGetStatus */
|
|
/* \brief Read the status register of the dataflash */
|
|
/*----------------------------------------------------------------------*/
|
|
static AT91S_DataFlashStatus AT91F_DataFlashGetStatus(AT91PS_DataflashDesc pDesc)
|
|
{
|
|
AT91S_DataFlashStatus status;
|
|
|
|
/* first send the read status command (D7H) */
|
|
pDesc->command[0] = DB_STATUS;
|
|
pDesc->command[1] = 0;
|
|
|
|
pDesc->DataFlash_state = GET_STATUS;
|
|
pDesc->tx_data_size = 0 ; /* Transmit the command and receive response */
|
|
pDesc->tx_cmd_pt = pDesc->command ;
|
|
pDesc->rx_cmd_pt = pDesc->command ;
|
|
pDesc->rx_cmd_size = 2 ;
|
|
pDesc->tx_cmd_size = 2 ;
|
|
status = AT91F_SpiWrite (pDesc);
|
|
|
|
pDesc->DataFlash_state = *( (unsigned char *) (pDesc->rx_cmd_pt) +1);
|
|
return status;
|
|
}
|
|
|
|
/*-----------------------------------------------------------------------------
|
|
* Function Name : AT91F_DataFlashWaitReady
|
|
* Object : wait for dataflash ready (bit7 of the status register == 1)
|
|
* Input Parameters : DataFlash Service and timeout
|
|
* Return value : DataFlash status "ready or not"
|
|
*-----------------------------------------------------------------------------
|
|
*/
|
|
static AT91S_DataFlashStatus AT91F_DataFlashWaitReady(
|
|
AT91PS_DataflashDesc pDataFlashDesc,
|
|
unsigned int timeout)
|
|
{
|
|
pDataFlashDesc->DataFlash_state = IDLE;
|
|
do {
|
|
AT91F_DataFlashGetStatus(pDataFlashDesc);
|
|
timeout--;
|
|
}
|
|
while(((pDataFlashDesc->DataFlash_state & 0x80) != 0x80) && (timeout > 0));
|
|
|
|
if((pDataFlashDesc->DataFlash_state & 0x80) != 0x80)
|
|
return AT91C_DATAFLASH_ERROR;
|
|
|
|
return AT91C_DATAFLASH_OK;
|
|
}
|
|
|
|
|
|
/*------------------------------------------------------------------------------*/
|
|
/* Function Name : AT91F_DataFlashContinuousRead */
|
|
/* Object : Continuous stream Read */
|
|
/* Input Parameters : DataFlash Service */
|
|
/* : <src> = dataflash address */
|
|
/* : <*dataBuffer> = data buffer pointer */
|
|
/* : <sizeToRead> = data buffer size */
|
|
/* Return value : State of the dataflash */
|
|
/*------------------------------------------------------------------------------*/
|
|
static AT91S_DataFlashStatus AT91F_DataFlashContinuousRead(
|
|
AT91PS_DataFlash pDataFlash,
|
|
int src,
|
|
unsigned char *dataBuffer,
|
|
int sizeToRead )
|
|
{
|
|
AT91S_DataFlashStatus status;
|
|
/* Test the size to read in the device */
|
|
if ( (src + sizeToRead) > (pDataFlash->pDevice->pages_size * (pDataFlash->pDevice->pages_number)))
|
|
return AT91C_DATAFLASH_MEMORY_OVERFLOW;
|
|
|
|
pDataFlash->pDataFlashDesc->rx_data_pt = dataBuffer;
|
|
pDataFlash->pDataFlashDesc->rx_data_size = sizeToRead;
|
|
pDataFlash->pDataFlashDesc->tx_data_pt = dataBuffer;
|
|
pDataFlash->pDataFlashDesc->tx_data_size = sizeToRead;
|
|
|
|
status = AT91F_DataFlashSendCommand(pDataFlash, DB_CONTINUOUS_ARRAY_READ, 8, src);
|
|
/* Send the command to the dataflash */
|
|
return(status);
|
|
}
|
|
|
|
|
|
|
|
/*------------------------------------------------------------------------------*/
|
|
/* Function Name : AT91F_MainMemoryToBufferTransfer */
|
|
/* Object : Read a page in the SRAM Buffer 1 or 2 */
|
|
/* Input Parameters : DataFlash Service */
|
|
/* : Page concerned */
|
|
/* : */
|
|
/* Return value : State of the dataflash */
|
|
/*------------------------------------------------------------------------------*/
|
|
static AT91S_DataFlashStatus AT91F_MainMemoryToBufferTransfer(
|
|
AT91PS_DataFlash pDataFlash,
|
|
unsigned char BufferCommand,
|
|
unsigned int page)
|
|
{
|
|
int cmdsize;
|
|
/* Test if the buffer command is legal */
|
|
if ((BufferCommand != DB_PAGE_2_BUF1_TRF) && (BufferCommand != DB_PAGE_2_BUF2_TRF))
|
|
return AT91C_DATAFLASH_BAD_COMMAND;
|
|
|
|
/* no data to transmit or receive */
|
|
pDataFlash->pDataFlashDesc->tx_data_size = 0;
|
|
cmdsize = 4;
|
|
if (pDataFlash->pDevice->pages_number >= 16384)
|
|
cmdsize = 5;
|
|
return(AT91F_DataFlashSendCommand(pDataFlash, BufferCommand, cmdsize,
|
|
page*pDataFlash->pDevice->pages_size));
|
|
}
|
|
|
|
|
|
|
|
/*----------------------------------------------------------------------------- */
|
|
/* Function Name : AT91F_DataFlashWriteBuffer */
|
|
/* Object : Write data to the internal sram buffer 1 or 2 */
|
|
/* Input Parameters : DataFlash Service */
|
|
/* : <BufferCommand> = command to write buffer1 or buffer2 */
|
|
/* : <*dataBuffer> = data buffer to write */
|
|
/* : <bufferAddress> = address in the internal buffer */
|
|
/* : <SizeToWrite> = data buffer size */
|
|
/* Return value : State of the dataflash */
|
|
/*------------------------------------------------------------------------------*/
|
|
static AT91S_DataFlashStatus AT91F_DataFlashWriteBuffer(
|
|
AT91PS_DataFlash pDataFlash,
|
|
unsigned char BufferCommand,
|
|
unsigned char *dataBuffer,
|
|
unsigned int bufferAddress,
|
|
int SizeToWrite )
|
|
{
|
|
int cmdsize;
|
|
/* Test if the buffer command is legal */
|
|
if ((BufferCommand != DB_BUF1_WRITE) && (BufferCommand != DB_BUF2_WRITE))
|
|
return AT91C_DATAFLASH_BAD_COMMAND;
|
|
|
|
/* buffer address must be lower than page size */
|
|
if (bufferAddress > pDataFlash->pDevice->pages_size)
|
|
return AT91C_DATAFLASH_BAD_ADDRESS;
|
|
|
|
/* Send first Write Command */
|
|
pDataFlash->pDataFlashDesc->command[0] = BufferCommand;
|
|
pDataFlash->pDataFlashDesc->command[1] = 0;
|
|
if (pDataFlash->pDevice->pages_number >= 16384)
|
|
{
|
|
pDataFlash->pDataFlashDesc->command[2] = 0;
|
|
pDataFlash->pDataFlashDesc->command[3] = (unsigned char)(((unsigned int)(bufferAddress & pDataFlash->pDevice->byte_mask)) >> 8) ;
|
|
pDataFlash->pDataFlashDesc->command[4] = (unsigned char)((unsigned int)bufferAddress & 0x00FF) ;
|
|
cmdsize = 5;
|
|
}
|
|
else
|
|
{
|
|
pDataFlash->pDataFlashDesc->command[2] = (unsigned char)(((unsigned int)(bufferAddress & pDataFlash->pDevice->byte_mask)) >> 8) ;
|
|
pDataFlash->pDataFlashDesc->command[3] = (unsigned char)((unsigned int)bufferAddress & 0x00FF) ;
|
|
pDataFlash->pDataFlashDesc->command[4] = 0;
|
|
cmdsize = 4;
|
|
}
|
|
|
|
pDataFlash->pDataFlashDesc->tx_cmd_pt = pDataFlash->pDataFlashDesc->command ;
|
|
pDataFlash->pDataFlashDesc->tx_cmd_size = cmdsize ;
|
|
pDataFlash->pDataFlashDesc->rx_cmd_pt = pDataFlash->pDataFlashDesc->command ;
|
|
pDataFlash->pDataFlashDesc->rx_cmd_size = cmdsize ;
|
|
|
|
pDataFlash->pDataFlashDesc->rx_data_pt = dataBuffer ;
|
|
pDataFlash->pDataFlashDesc->tx_data_pt = dataBuffer ;
|
|
pDataFlash->pDataFlashDesc->rx_data_size = SizeToWrite ;
|
|
pDataFlash->pDataFlashDesc->tx_data_size = SizeToWrite ;
|
|
|
|
return AT91F_SpiWrite(pDataFlash->pDataFlashDesc);
|
|
}
|
|
|
|
|
|
/*------------------------------------------------------------------------------*/
|
|
/* Function Name : AT91F_PageErase */
|
|
/* Object : Read a page in the SRAM Buffer 1 or 2 */
|
|
/* Input Parameters : DataFlash Service */
|
|
/* : Page concerned */
|
|
/* : */
|
|
/* Return value : State of the dataflash */
|
|
/*------------------------------------------------------------------------------*/
|
|
static AT91S_DataFlashStatus AT91F_PageErase(
|
|
AT91PS_DataFlash pDataFlash,
|
|
unsigned int page)
|
|
{
|
|
int cmdsize;
|
|
/* Test if the buffer command is legal */
|
|
/* no data to transmit or receive */
|
|
pDataFlash->pDataFlashDesc->tx_data_size = 0;
|
|
|
|
cmdsize = 4;
|
|
if (pDataFlash->pDevice->pages_number >= 16384)
|
|
cmdsize = 5;
|
|
return(AT91F_DataFlashSendCommand(pDataFlash, DB_PAGE_ERASE, cmdsize,
|
|
page*pDataFlash->pDevice->pages_size));
|
|
}
|
|
|
|
|
|
/*------------------------------------------------------------------------------*/
|
|
/* Function Name : AT91F_WriteBufferToMain */
|
|
/* Object : Write buffer to the main memory */
|
|
/* Input Parameters : DataFlash Service */
|
|
/* : <BufferCommand> = command to send to buf1 or buf2 */
|
|
/* : <dest> = main memory address */
|
|
/* Return value : State of the dataflash */
|
|
/*------------------------------------------------------------------------------*/
|
|
static AT91S_DataFlashStatus AT91F_WriteBufferToMain (
|
|
AT91PS_DataFlash pDataFlash,
|
|
unsigned char BufferCommand,
|
|
unsigned int dest )
|
|
{
|
|
int cmdsize;
|
|
/* Test if the buffer command is correct */
|
|
if ((BufferCommand != DB_BUF1_PAGE_PGM) &&
|
|
(BufferCommand != DB_BUF1_PAGE_ERASE_PGM) &&
|
|
(BufferCommand != DB_BUF2_PAGE_PGM) &&
|
|
(BufferCommand != DB_BUF2_PAGE_ERASE_PGM) )
|
|
return AT91C_DATAFLASH_BAD_COMMAND;
|
|
|
|
/* no data to transmit or receive */
|
|
pDataFlash->pDataFlashDesc->tx_data_size = 0;
|
|
|
|
cmdsize = 4;
|
|
if (pDataFlash->pDevice->pages_number >= 16384)
|
|
cmdsize = 5;
|
|
/* Send the command to the dataflash */
|
|
return(AT91F_DataFlashSendCommand (pDataFlash, BufferCommand, cmdsize, dest));
|
|
}
|
|
|
|
|
|
/*------------------------------------------------------------------------------*/
|
|
/* Function Name : AT91F_PartialPageWrite */
|
|
/* Object : Erase partially a page */
|
|
/* Input Parameters : <page> = page number */
|
|
/* : <AdrInpage> = adr to begin the fading */
|
|
/* : <length> = Number of bytes to erase */
|
|
/*------------------------------------------------------------------------------*/
|
|
static AT91S_DataFlashStatus AT91F_PartialPageWrite (
|
|
AT91PS_DataFlash pDataFlash,
|
|
unsigned char *src,
|
|
unsigned int dest,
|
|
unsigned int size)
|
|
{
|
|
unsigned int page;
|
|
unsigned int AdrInPage;
|
|
|
|
page = dest / (pDataFlash->pDevice->pages_size);
|
|
AdrInPage = dest % (pDataFlash->pDevice->pages_size);
|
|
|
|
/* Read the contents of the page in the Sram Buffer */
|
|
AT91F_MainMemoryToBufferTransfer(pDataFlash, DB_PAGE_2_BUF1_TRF, page);
|
|
AT91F_DataFlashWaitReady(pDataFlash->pDataFlashDesc, AT91C_DATAFLASH_TIMEOUT);
|
|
|
|
/*Update the SRAM buffer */
|
|
AT91F_DataFlashWriteBuffer(pDataFlash, DB_BUF1_WRITE, src, AdrInPage, size);
|
|
AT91F_DataFlashWaitReady(pDataFlash->pDataFlashDesc, AT91C_DATAFLASH_TIMEOUT);
|
|
|
|
/* Erase page if a 128 Mbits device */
|
|
if (pDataFlash->pDevice->pages_number >= 16384)
|
|
{
|
|
AT91F_PageErase(pDataFlash, page);
|
|
AT91F_DataFlashWaitReady(pDataFlash->pDataFlashDesc, AT91C_DATAFLASH_TIMEOUT);
|
|
}
|
|
|
|
/* Rewrite the modified Sram Buffer in the main memory */
|
|
return(AT91F_WriteBufferToMain(pDataFlash, DB_BUF1_PAGE_ERASE_PGM,
|
|
(page*pDataFlash->pDevice->pages_size)));
|
|
}
|
|
|
|
|
|
/*------------------------------------------------------------------------------*/
|
|
/* Function Name : AT91F_DataFlashWrite */
|
|
/* Object : */
|
|
/* Input Parameters : <*src> = Source buffer */
|
|
/* : <dest> = dataflash adress */
|
|
/* : <size> = data buffer size */
|
|
/*------------------------------------------------------------------------------*/
|
|
AT91S_DataFlashStatus AT91F_DataFlashWrite(
|
|
AT91PS_DataFlash pDataFlash,
|
|
unsigned char *src,
|
|
int dest,
|
|
int size )
|
|
{
|
|
unsigned int length;
|
|
unsigned int page;
|
|
unsigned int status;
|
|
|
|
AT91F_SpiEnable(pDataFlash->pDevice->cs);
|
|
|
|
if ( (dest + size) > (pDataFlash->pDevice->pages_size * (pDataFlash->pDevice->pages_number)))
|
|
return AT91C_DATAFLASH_MEMORY_OVERFLOW;
|
|
|
|
/* If destination does not fit a page start address */
|
|
if ((dest % ((unsigned int)(pDataFlash->pDevice->pages_size))) != 0 ) {
|
|
length = pDataFlash->pDevice->pages_size - (dest % ((unsigned int)(pDataFlash->pDevice->pages_size)));
|
|
|
|
if (size < length)
|
|
length = size;
|
|
|
|
if(!AT91F_PartialPageWrite(pDataFlash,src, dest, length))
|
|
return AT91C_DATAFLASH_ERROR;
|
|
|
|
AT91F_DataFlashWaitReady(pDataFlash->pDataFlashDesc, AT91C_DATAFLASH_TIMEOUT);
|
|
|
|
/* Update size, source and destination pointers */
|
|
size -= length;
|
|
dest += length;
|
|
src += length;
|
|
}
|
|
|
|
while (( size - pDataFlash->pDevice->pages_size ) >= 0 )
|
|
{
|
|
/* program dataflash page */
|
|
page = (unsigned int)dest / (pDataFlash->pDevice->pages_size);
|
|
|
|
status = AT91F_DataFlashWriteBuffer(pDataFlash, DB_BUF1_WRITE, src,
|
|
0, pDataFlash->pDevice->pages_size);
|
|
AT91F_DataFlashWaitReady(pDataFlash->pDataFlashDesc, AT91C_DATAFLASH_TIMEOUT);
|
|
|
|
status = AT91F_PageErase(pDataFlash, page);
|
|
AT91F_DataFlashWaitReady(pDataFlash->pDataFlashDesc, AT91C_DATAFLASH_TIMEOUT);
|
|
if (!status)
|
|
return AT91C_DATAFLASH_ERROR;
|
|
|
|
status = AT91F_WriteBufferToMain (pDataFlash, DB_BUF1_PAGE_PGM, dest);
|
|
if(!status)
|
|
return AT91C_DATAFLASH_ERROR;
|
|
|
|
AT91F_DataFlashWaitReady(pDataFlash->pDataFlashDesc, AT91C_DATAFLASH_TIMEOUT);
|
|
|
|
/* Update size, source and destination pointers */
|
|
size -= pDataFlash->pDevice->pages_size ;
|
|
dest += pDataFlash->pDevice->pages_size ;
|
|
src += pDataFlash->pDevice->pages_size ;
|
|
}
|
|
|
|
/* If still some bytes to read */
|
|
if ( size > 0 ) {
|
|
/* program dataflash page */
|
|
if(!AT91F_PartialPageWrite(pDataFlash, src, dest, size) )
|
|
return AT91C_DATAFLASH_ERROR;
|
|
AT91F_DataFlashWaitReady(pDataFlash->pDataFlashDesc, AT91C_DATAFLASH_TIMEOUT);
|
|
}
|
|
return AT91C_DATAFLASH_OK;
|
|
}
|
|
|
|
|
|
/*------------------------------------------------------------------------------*/
|
|
/* Function Name : AT91F_DataFlashRead */
|
|
/* Object : Read a block in dataflash */
|
|
/* Input Parameters : */
|
|
/* Return value : */
|
|
/*------------------------------------------------------------------------------*/
|
|
int AT91F_DataFlashRead(
|
|
AT91PS_DataFlash pDataFlash,
|
|
unsigned long addr,
|
|
unsigned long size,
|
|
char *buffer)
|
|
{
|
|
unsigned long SizeToRead;
|
|
|
|
AT91F_SpiEnable(pDataFlash->pDevice->cs);
|
|
|
|
if(AT91F_DataFlashWaitReady(pDataFlash->pDataFlashDesc, AT91C_DATAFLASH_TIMEOUT) != AT91C_DATAFLASH_OK)
|
|
return -1;
|
|
|
|
while (size)
|
|
{
|
|
SizeToRead = (size < 0x8000)? size:0x8000;
|
|
|
|
if (AT91F_DataFlashWaitReady(pDataFlash->pDataFlashDesc, AT91C_DATAFLASH_TIMEOUT)
|
|
!= AT91C_DATAFLASH_OK)
|
|
return -1;
|
|
|
|
if (AT91F_DataFlashContinuousRead (pDataFlash, addr, (unsigned char *)buffer,
|
|
SizeToRead) != AT91C_DATAFLASH_OK)
|
|
return -1;
|
|
|
|
size -= SizeToRead;
|
|
addr += SizeToRead;
|
|
buffer += SizeToRead;
|
|
}
|
|
|
|
return AT91C_DATAFLASH_OK;
|
|
}
|
|
|
|
|
|
/*------------------------------------------------------------------------------*/
|
|
/* Function Name : AT91F_DataflashProbe */
|
|
/* Object : */
|
|
/* Input Parameters : */
|
|
/* Return value : Dataflash status register */
|
|
/*------------------------------------------------------------------------------*/
|
|
int AT91F_DataflashProbe(int cs, AT91PS_DataflashDesc pDesc)
|
|
{
|
|
AT91F_SpiEnable(cs);
|
|
AT91F_DataFlashGetStatus(pDesc);
|
|
return ((pDesc->command[1] == 0xFF)? 0: (pDesc->command[1] & 0x3C));
|
|
}
|
|
|
|
/*------------------------------------------------------------------------------*/
|
|
/* Function Name : AT91F_DataFlashErase */
|
|
/* Object : */
|
|
/* Input Parameters : <*pDataFlash> = Device info */
|
|
/*------------------------------------------------------------------------------*/
|
|
AT91S_DataFlashStatus AT91F_DataFlashErase(AT91PS_DataFlash pDataFlash)
|
|
{
|
|
unsigned int page;
|
|
unsigned int status;
|
|
|
|
AT91F_SpiEnable(pDataFlash->pDevice->cs);
|
|
|
|
for(page=0; page < pDataFlash->pDevice->pages_number; page++)
|
|
{
|
|
/* Erase dataflash page */
|
|
if ((page & 0x00FF) == 0)
|
|
printf("\rERA %d/%d", page, pDataFlash->pDevice->pages_number);
|
|
status = AT91F_PageErase(pDataFlash, page);
|
|
AT91F_DataFlashWaitReady(pDataFlash->pDataFlashDesc, AT91C_DATAFLASH_TIMEOUT);
|
|
if (!status)
|
|
return AT91C_DATAFLASH_ERROR;
|
|
}
|
|
|
|
return AT91C_DATAFLASH_OK;
|
|
}
|
|
|