+++ /dev/null
-/*----------------------------------------------------------------------------
- * 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;
-}
-
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