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path: root/drivers/at45.c
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Diffstat (limited to 'drivers/at45.c')
-rwxr-xr-xdrivers/at45.c133
1 files changed, 65 insertions, 68 deletions
diff --git a/drivers/at45.c b/drivers/at45.c
index 7d35695..507ff36 100755
--- a/drivers/at45.c
+++ b/drivers/at45.c
@@ -36,7 +36,7 @@ extern void AT91F_SpiEnable(int cs);
/*----------------------------------------------------------------------*/
/* \fn AT91F_DataFlashSendCommand */
/* \brief Generic function to send a command to the dataflash */
-/*----------------------------------------------------------------------*/
+/*----------------------------------------------------------------------*/
AT91S_DataFlashStatus AT91F_DataFlashSendCommand(
AT91PS_DataFlash pDataFlash,
unsigned char OpCode,
@@ -49,27 +49,27 @@ AT91S_DataFlashStatus AT91F_DataFlashSendCommand(
return DATAFLASH_BUSY;
/* process the address to obtain page address and byte address */
- adr = ((DataflashAddress / (pDataFlash->pDevice->pages_size)) <<
- pDataFlash->pDevice->page_offset) + (DataflashAddress %
+ 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] =
+ pDataFlash->pDataFlashDesc->command[1] =
(unsigned char)((adr & 0x0F000000) >> 24);
- pDataFlash->pDataFlashDesc->command[2] =
+ pDataFlash->pDataFlashDesc->command[2] =
(unsigned char)((adr & 0x00FF0000) >> 16);
- pDataFlash->pDataFlashDesc->command[3] =
+ pDataFlash->pDataFlashDesc->command[3] =
(unsigned char)((adr & 0x0000FF00) >> 8);
- pDataFlash->pDataFlashDesc->command[4] =
+ pDataFlash->pDataFlashDesc->command[4] =
(unsigned char)(adr & 0x000000FF);
} else {
- pDataFlash->pDataFlashDesc->command[1] =
+ pDataFlash->pDataFlashDesc->command[1] =
(unsigned char)((adr & 0x00FF0000) >> 16);
- pDataFlash->pDataFlashDesc->command[2] =
+ pDataFlash->pDataFlashDesc->command[2] =
(unsigned char)((adr & 0x0000FF00) >> 8);
- pDataFlash->pDataFlashDesc->command[3] =
+ pDataFlash->pDataFlashDesc->command[3] =
(unsigned char)(adr & 0x000000FF);
pDataFlash->pDataFlashDesc->command[4] = 0;
}
@@ -78,10 +78,10 @@ AT91S_DataFlashStatus AT91F_DataFlashSendCommand(
pDataFlash->pDataFlashDesc->command[7] = 0;
/* Initialize the SpiData structure for the spi write fuction */
- pDataFlash->pDataFlashDesc->tx_cmd_pt =
+ pDataFlash->pDataFlashDesc->tx_cmd_pt =
pDataFlash->pDataFlashDesc->command;
pDataFlash->pDataFlashDesc->tx_cmd_size = CmdSize;
- pDataFlash->pDataFlashDesc->rx_cmd_pt =
+ pDataFlash->pDataFlashDesc->rx_cmd_pt =
pDataFlash->pDataFlashDesc->command;
pDataFlash->pDataFlashDesc->rx_cmd_size = CmdSize;
@@ -92,8 +92,8 @@ AT91S_DataFlashStatus AT91F_DataFlashSendCommand(
/*----------------------------------------------------------------------*/
/* \fn AT91F_DataFlashGetStatus */
/* \brief Read the status register of the dataflash */
-/*----------------------------------------------------------------------*/
-AT91S_DataFlashStatus AT91F_DataFlashGetStatus(AT91PS_DataflashDesc pDesc)
+/*----------------------------------------------------------------------*/
+AT91S_DataFlashStatus AT91F_DataFlashGetStatus(AT91PS_DataflashDesc pDesc)
{
AT91S_DataFlashStatus status;
@@ -123,16 +123,16 @@ AT91S_DataFlashStatus AT91F_DataFlashGetStatus(AT91PS_DataflashDesc pDesc)
/*----------------------------------------------------------------------*/
/* \fn AT91F_DataFlashWaitReady */
/* \brief wait for dataflash ready (bit7 of the status register == 1) */
-/*----------------------------------------------------------------------*/
-AT91S_DataFlashStatus AT91F_DataFlashWaitReady(AT91PS_DataflashDesc
-pDataFlashDesc, unsigned int timeout)
+/*----------------------------------------------------------------------*/
+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) &&
+ } while( ((pDataFlashDesc->DataFlash_state & 0x80) != 0x80) &&
(timeout > 0) );
if((pDataFlashDesc->DataFlash_state & 0x80) != 0x80)
@@ -150,7 +150,7 @@ pDataFlashDesc, unsigned int timeout)
/* : <*dataBuffer> = data buffer pointer */
/* : <sizeToRead> = data buffer size */
/* Return value : State of the dataflash */
-/*--------------------------------------------------------------------------*/
+/*--------------------------------------------------------------------------*/
AT91S_DataFlashStatus AT91F_DataFlashContinuousRead (
AT91PS_DataFlash pDataFlash,
int src,
@@ -159,8 +159,8 @@ AT91S_DataFlashStatus AT91F_DataFlashContinuousRead (
{
AT91S_DataFlashStatus status;
/* Test the size to read in the device */
- if ( (src + sizeToRead) >
- (pDataFlash->pDevice->pages_size *
+ if ( (src + sizeToRead) >
+ (pDataFlash->pDevice->pages_size *
(pDataFlash->pDevice->pages_number)))
return DATAFLASH_MEMORY_OVERFLOW;
@@ -169,7 +169,7 @@ AT91S_DataFlashStatus AT91F_DataFlashContinuousRead (
pDataFlash->pDataFlashDesc->tx_data_pt = dataBuffer;
pDataFlash->pDataFlashDesc->tx_data_size = sizeToRead;
- status = AT91F_DataFlashSendCommand
+ status = AT91F_DataFlashSendCommand
(pDataFlash, DB_CONTINUOUS_ARRAY_READ, 8, src);
/* Send the command to the dataflash */
return(status);
@@ -184,7 +184,7 @@ AT91S_DataFlashStatus AT91F_DataFlashContinuousRead (
/* : <dest> = dataflash destination address */
/* : <SizeToWrite> = data buffer size */
/* Return value : State of the dataflash */
-/*---------------------------------------------------------------------------*/
+/*---------------------------------------------------------------------------*/
AT91S_DataFlashStatus AT91F_DataFlashPagePgmBuf(
AT91PS_DataFlash pDataFlash,
unsigned char *src,
@@ -201,7 +201,7 @@ AT91S_DataFlashStatus AT91F_DataFlashPagePgmBuf(
/* Send the command to the dataflash */
if (pDataFlash->pDevice->pages_number >= 16384)
cmdsize = 5;
- return(AT91F_DataFlashSendCommand (pDataFlash, DB_PAGE_PGM_BUF1,
+ return(AT91F_DataFlashSendCommand (pDataFlash, DB_PAGE_PGM_BUF1,
cmdsize, dest)); }
@@ -212,7 +212,7 @@ cmdsize, dest)); }
/* : Page concerned */
/* : */
/* Return value : State of the dataflash */
-/*---------------------------------------------------------------------------*/
+/*---------------------------------------------------------------------------*/
AT91S_DataFlashStatus AT91F_MainMemoryToBufferTransfert(
AT91PS_DataFlash pDataFlash,
unsigned char BufferCommand,
@@ -220,7 +220,7 @@ AT91S_DataFlashStatus AT91F_MainMemoryToBufferTransfert(
{
int cmdsize;
/* Test if the buffer command is legal */
- if ((BufferCommand != DB_PAGE_2_BUF1_TRF)
+ if ((BufferCommand != DB_PAGE_2_BUF1_TRF)
&& (BufferCommand != DB_PAGE_2_BUF2_TRF))
return DATAFLASH_BAD_COMMAND;
@@ -229,7 +229,7 @@ AT91S_DataFlashStatus AT91F_MainMemoryToBufferTransfert(
cmdsize = 4;
if (pDataFlash->pDevice->pages_number >= 16384)
cmdsize = 5;
- return(AT91F_DataFlashSendCommand (pDataFlash, BufferCommand, cmdsize,
+ return(AT91F_DataFlashSendCommand (pDataFlash, BufferCommand, cmdsize,
page*pDataFlash->pDevice->pages_size));
}
@@ -253,7 +253,7 @@ AT91S_DataFlashStatus AT91F_DataFlashWriteBuffer (
{
int cmdsize;
/* Test if the buffer command is legal */
- if ((BufferCommand != DB_BUF1_WRITE)
+ if ((BufferCommand != DB_BUF1_WRITE)
&& (BufferCommand != DB_BUF2_WRITE))
return DATAFLASH_BAD_COMMAND;
@@ -269,26 +269,26 @@ AT91S_DataFlashStatus AT91F_DataFlashWriteBuffer (
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->pDataFlashDesc->command[3] =
+ (unsigned char)(((unsigned int)(bufferAddress &
pDataFlash->pDevice->byte_mask)) >> 8);
- pDataFlash->pDataFlashDesc->command[4] =
+ pDataFlash->pDataFlashDesc->command[4] =
(unsigned char)((unsigned int)bufferAddress & 0x00FF);
cmdsize = 5;
} else {
- pDataFlash->pDataFlashDesc->command[2] =
- (unsigned char)(((unsigned int)(bufferAddress &
+ pDataFlash->pDataFlashDesc->command[2] =
+ (unsigned char)(((unsigned int)(bufferAddress &
pDataFlash->pDevice->byte_mask)) >> 8);
- pDataFlash->pDataFlashDesc->command[3] =
+ pDataFlash->pDataFlashDesc->command[3] =
(unsigned char)((unsigned int)bufferAddress & 0x00FF);
pDataFlash->pDataFlashDesc->command[4] = 0;
cmdsize = 4;
}
- pDataFlash->pDataFlashDesc->tx_cmd_pt =
+ pDataFlash->pDataFlashDesc->tx_cmd_pt =
pDataFlash->pDataFlashDesc->command;
pDataFlash->pDataFlashDesc->tx_cmd_size = cmdsize;
- pDataFlash->pDataFlashDesc->rx_cmd_pt =
+ pDataFlash->pDataFlashDesc->rx_cmd_pt =
pDataFlash->pDataFlashDesc->command;
pDataFlash->pDataFlashDesc->rx_cmd_size = cmdsize;
@@ -320,7 +320,7 @@ AT91S_DataFlashStatus AT91F_PageErase(
cmdsize = 4;
if (pDataFlash->pDevice->pages_number >= 16384)
cmdsize = 5;
- return(AT91F_DataFlashSendCommand (pDataFlash, DB_PAGE_ERASE, cmdsize,
+ return(AT91F_DataFlashSendCommand (pDataFlash, DB_PAGE_ERASE, cmdsize,
page*pDataFlash->pDevice->pages_size));
}
@@ -332,7 +332,7 @@ page*pDataFlash->pDevice->pages_size));
/* : Page concerned */
/* : */
/* Return value : State of the dataflash */
-/*---------------------------------------------------------------------------*/
+/*---------------------------------------------------------------------------*/
AT91S_DataFlashStatus AT91F_BlockErase(
AT91PS_DataFlash pDataFlash,
unsigned int block)
@@ -344,7 +344,7 @@ AT91S_DataFlashStatus AT91F_BlockErase(
cmdsize = 4;
if (pDataFlash->pDevice->pages_number >= 16384)
cmdsize = 5;
- return(AT91F_DataFlashSendCommand (pDataFlash, DB_BLOCK_ERASE,cmdsize,
+ return(AT91F_DataFlashSendCommand (pDataFlash, DB_BLOCK_ERASE,cmdsize,
block*8*pDataFlash->pDevice->pages_size));
}
@@ -355,7 +355,7 @@ block*8*pDataFlash->pDevice->pages_size));
/* : <BufferCommand> = command to send to buffer1 or buffer2 */
/* : <dest> = main memory address */
/* Return value : State of the dataflash */
-/*---------------------------------------------------------------------------*/
+/*---------------------------------------------------------------------------*/
AT91S_DataFlashStatus AT91F_WriteBufferToMain (
AT91PS_DataFlash pDataFlash,
unsigned char BufferCommand,
@@ -386,7 +386,7 @@ AT91S_DataFlashStatus AT91F_WriteBufferToMain (
/* Input Parameters : <page> = page number */
/* : <AdrInpage> = adr to begin the fading */
/* : <length> = Number of bytes to erase */
-/*---------------------------------------------------------------------------*/
+/*---------------------------------------------------------------------------*/
AT91S_DataFlashStatus AT91F_PartialPageWrite (
AT91PS_DataFlash pDataFlash,
unsigned char *src,
@@ -400,27 +400,27 @@ AT91S_DataFlashStatus AT91F_PartialPageWrite (
AdrInPage = dest % (pDataFlash->pDevice->pages_size);
/* Read the contents of the page in the Sram Buffer */
- AT91F_MainMemoryToBufferTransfert(pDataFlash,
+ AT91F_MainMemoryToBufferTransfert(pDataFlash,
DB_PAGE_2_BUF1_TRF, page);
- AT91F_DataFlashWaitReady(pDataFlash->pDataFlashDesc,
+ AT91F_DataFlashWaitReady(pDataFlash->pDataFlashDesc,
AT91C_TIMEOUT_WRDY);
/*Update the SRAM buffer */
- AT91F_DataFlashWriteBuffer(pDataFlash, DB_BUF1_WRITE, src,
+ AT91F_DataFlashWriteBuffer(pDataFlash, DB_BUF1_WRITE, src,
AdrInPage, size);
- AT91F_DataFlashWaitReady(pDataFlash->pDataFlashDesc,
+ AT91F_DataFlashWaitReady(pDataFlash->pDataFlashDesc,
AT91C_TIMEOUT_WRDY);
/* Erase page if a 128 Mbits device */
if (pDataFlash->pDevice->pages_number >= 16384) {
AT91F_PageErase(pDataFlash, page);
/* Rewrite the modified Sram Buffer in the main memory */
- AT91F_DataFlashWaitReady(pDataFlash->pDataFlashDesc,
+ AT91F_DataFlashWaitReady(pDataFlash->pDataFlashDesc,
AT91C_TIMEOUT_WRDY);
}
/* Rewrite the modified Sram Buffer in the main memory */
- return(AT91F_WriteBufferToMain(pDataFlash, DB_BUF1_PAGE_ERASE_PGM,
+ return(AT91F_WriteBufferToMain(pDataFlash, DB_BUF1_PAGE_ERASE_PGM,
(page*pDataFlash->pDevice->pages_size)));
}
@@ -430,7 +430,7 @@ AT91S_DataFlashStatus AT91F_PartialPageWrite (
/* Input Parameters : <*src> = Source buffer */
/* : <dest> = dataflash adress */
/* : <size> = data buffer size */
-/*---------------------------------------------------------------------------*/
+/*---------------------------------------------------------------------------*/
AT91S_DataFlashStatus AT91F_DataFlashWrite(
AT91PS_DataFlash pDataFlash,
unsigned char *src,
@@ -443,15 +443,15 @@ AT91S_DataFlashStatus AT91F_DataFlashWrite(
AT91F_SpiEnable(pDataFlash->pDevice->cs);
- if ( (dest + size) > (pDataFlash->pDevice->pages_size *
+ if ( (dest + size) > (pDataFlash->pDevice->pages_size *
(pDataFlash->pDevice->pages_number)))
return DATAFLASH_MEMORY_OVERFLOW;
/* If destination does not fit a page start address */
- if ((dest % ((unsigned int)(pDataFlash->pDevice->pages_size))) != 0 )
+ if ((dest % ((unsigned int)(pDataFlash->pDevice->pages_size))) != 0 )
{
- length = pDataFlash->pDevice->pages_size -
- (dest %
+ length = pDataFlash->pDevice->pages_size -
+ (dest %
((unsigned int)
(pDataFlash->pDevice->pages_size)));
@@ -461,7 +461,7 @@ AT91S_DataFlashStatus AT91F_DataFlashWrite(
if(!AT91F_PartialPageWrite(pDataFlash,src, dest, length))
return DATAFLASH_ERROR;
- AT91F_DataFlashWaitReady(pDataFlash->pDataFlashDesc,
+ AT91F_DataFlashWaitReady(pDataFlash->pDataFlashDesc,
AT91C_TIMEOUT_WRDY);
/* Update size, source and destination pointers */
@@ -474,24 +474,24 @@ AT91S_DataFlashStatus AT91F_DataFlashWrite(
/* program dataflash page */
page = (unsigned int)dest / (pDataFlash->pDevice->pages_size);
- status = AT91F_DataFlashWriteBuffer(pDataFlash,
- DB_BUF1_WRITE, src, 0,
+ status = AT91F_DataFlashWriteBuffer(pDataFlash,
+ DB_BUF1_WRITE, src, 0,
pDataFlash->pDevice->pages_size);
- AT91F_DataFlashWaitReady(pDataFlash->pDataFlashDesc,
+ AT91F_DataFlashWaitReady(pDataFlash->pDataFlashDesc,
AT91C_TIMEOUT_WRDY);
status = AT91F_PageErase(pDataFlash, page);
- AT91F_DataFlashWaitReady(pDataFlash->pDataFlashDesc,
+ AT91F_DataFlashWaitReady(pDataFlash->pDataFlashDesc,
AT91C_TIMEOUT_WRDY);
if (!status)
return DATAFLASH_ERROR;
- status = AT91F_WriteBufferToMain (pDataFlash,
+ status = AT91F_WriteBufferToMain (pDataFlash,
DB_BUF1_PAGE_PGM, dest);
if(!status)
return DATAFLASH_ERROR;
- AT91F_DataFlashWaitReady(pDataFlash->pDataFlashDesc,
+ AT91F_DataFlashWaitReady(pDataFlash->pDataFlashDesc,
AT91C_TIMEOUT_WRDY);
/* Update size, source and destination pointers */
@@ -506,7 +506,7 @@ AT91S_DataFlashStatus AT91F_DataFlashWrite(
if(!AT91F_PartialPageWrite(pDataFlash, src, dest, size) )
return DATAFLASH_ERROR;
- AT91F_DataFlashWaitReady(pDataFlash->pDataFlashDesc,
+ AT91F_DataFlashWaitReady(pDataFlash->pDataFlashDesc,
AT91C_TIMEOUT_WRDY);
}
return DATAFLASH_OK;
@@ -529,18 +529,18 @@ int AT91F_DataFlashRead(
AT91F_SpiEnable(pDataFlash->pDevice->cs);
- if(AT91F_DataFlashWaitReady(pDataFlash->pDataFlashDesc,
+ if(AT91F_DataFlashWaitReady(pDataFlash->pDataFlashDesc,
AT91C_TIMEOUT_WRDY) != DATAFLASH_OK)
return -1;
while (size) {
SizeToRead = (size < 0x8000)? size:0x8000;
- if (AT91F_DataFlashWaitReady(pDataFlash->pDataFlashDesc,
+ if (AT91F_DataFlashWaitReady(pDataFlash->pDataFlashDesc,
AT91C_TIMEOUT_WRDY) != DATAFLASH_OK)
return -1;
- if (AT91F_DataFlashContinuousRead (pDataFlash, addr,
+ if (AT91F_DataFlashContinuousRead (pDataFlash, addr,
(uchar *) buffer, SizeToRead) != DATAFLASH_OK)
return -1;
@@ -557,13 +557,10 @@ int AT91F_DataFlashRead(
/* 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);
+ return((pDesc->command[1] == 0xFF)? 0: pDesc->command[1] & 0x3C);
}
-
#endif
-
-
generated by cgit v1.1 at 2024-12-18 04:08:09 +0000