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Diffstat (limited to 'cpu/at91rm9200/at45.c')
-rw-r--r--cpu/at91rm9200/at45.c114
1 files changed, 55 insertions, 59 deletions
diff --git a/cpu/at91rm9200/at45.c b/cpu/at91rm9200/at45.c
index e0057e7..cf456fb 100644
--- a/cpu/at91rm9200/at45.c
+++ b/cpu/at91rm9200/at45.c
@@ -45,7 +45,7 @@ void AT91F_SpiInit(void) {
/* Reset the SPI */
AT91C_BASE_SPI->SPI_CR = AT91C_SPI_SWRST;
- /* Configure SPI in Master Mode with No CS selected !!! */
+ /* 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 */
@@ -83,38 +83,38 @@ void AT91F_SpiEnable(int cs) {
/*----------------------------------------------------------------------------*/
unsigned int AT91F_SpiWrite ( AT91PS_DataflashDesc pDesc )
{
- unsigned int timeout;
+ unsigned int timeout;
pDesc->state = BUSY;
- AT91C_BASE_SPI->SPI_PTCR = AT91C_PDC_TXTDIS + AT91C_PDC_RXTDIS;
+ 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 ;
+ /* 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;
+ /* 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 ;
+ /* 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 ;
- }
+ AT91C_BASE_SPI->SPI_TNCR = pDesc->tx_data_size ;
+ }
- /* arm simple, non interrupt dependent timer */
+ /* arm simple, non interrupt dependent timer */
reset_timer_masked();
timeout = 0;
AT91C_BASE_SPI->SPI_PTCR = AT91C_PDC_TXTEN + AT91C_PDC_RXTEN;
while(!(AT91C_BASE_SPI->SPI_SR & AT91C_SPI_RXBUFF) && ((timeout = get_timer_masked() ) < CFG_SPI_WRITE_TOUT));
- AT91C_BASE_SPI->SPI_PTCR = AT91C_PDC_TXTDIS + AT91C_PDC_RXTDIS;
- pDesc->state = IDLE;
+ AT91C_BASE_SPI->SPI_PTCR = AT91C_PDC_TXTDIS + AT91C_PDC_RXTDIS;
+ pDesc->state = IDLE;
if (timeout >= CFG_SPI_WRITE_TOUT){
printf("Error Timeout\n\r");
@@ -181,12 +181,12 @@ AT91S_DataFlashStatus AT91F_DataFlashGetStatus(AT91PS_DataflashDesc pDesc)
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->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);
@@ -215,7 +215,6 @@ AT91S_DataFlashStatus AT91F_DataFlashWaitReady(AT91PS_DataflashDesc pDataFlashDe
}
-
/*------------------------------------------------------------------------------*/
/* Function Name : AT91F_DataFlashContinuousRead */
/* Object : Continuous stream Read */
@@ -226,7 +225,7 @@ AT91S_DataFlashStatus AT91F_DataFlashWaitReady(AT91PS_DataflashDesc pDataFlashDe
/* Return value : State of the dataflash */
/*------------------------------------------------------------------------------*/
AT91S_DataFlashStatus AT91F_DataFlashContinuousRead (
- AT91PS_DataFlash pDataFlash,
+ AT91PS_DataFlash pDataFlash,
int src,
unsigned char *dataBuffer,
int sizeToRead )
@@ -245,7 +244,6 @@ AT91S_DataFlashStatus AT91F_DataFlashContinuousRead (
}
-
/*------------------------------------------------------------------------------*/
/* Function Name : AT91F_DataFlashPagePgmBuf */
/* Object : Main memory page program through buffer 1 or buffer 2 */
@@ -289,13 +287,12 @@ AT91S_DataFlashStatus AT91F_MainMemoryToBufferTransfert(
return DATAFLASH_BAD_COMMAND;
/* no data to transmit or receive */
- pDataFlash->pDataFlashDesc->tx_data_size = 0;
+ pDataFlash->pDataFlashDesc->tx_data_size = 0;
return(AT91F_DataFlashSendCommand (pDataFlash, BufferCommand, 4, page*pDataFlash->pDevice->pages_size));
}
-
/*----------------------------------------------------------------------------- */
/* Function Name : AT91F_DataFlashWriteBuffer */
/* Object : Write data to the internal sram buffer 1 or 2 */
@@ -324,24 +321,24 @@ AT91S_DataFlashStatus AT91F_DataFlashWriteBuffer (
if ( (pDataFlash->pDataFlashDesc->state) != IDLE)
return DATAFLASH_BUSY;
- /* Send first Write Command */
- pDataFlash->pDataFlashDesc->command[0] = BufferCommand;
+ /* Send first Write Command */
+ pDataFlash->pDataFlashDesc->command[0] = BufferCommand;
pDataFlash->pDataFlashDesc->command[1] = 0;
- 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[2] = (unsigned char)(((unsigned int)(bufferAddress & pDataFlash->pDevice->byte_mask)) >> 8) ;
+ pDataFlash->pDataFlashDesc->command[3] = (unsigned char)((unsigned int)bufferAddress & 0x00FF) ;
- pDataFlash->pDataFlashDesc->tx_cmd_pt = pDataFlash->pDataFlashDesc->command ;
- pDataFlash->pDataFlashDesc->tx_cmd_size = 4 ;
- pDataFlash->pDataFlashDesc->rx_cmd_pt = pDataFlash->pDataFlashDesc->command ;
- pDataFlash->pDataFlashDesc->rx_cmd_size = 4 ;
+ pDataFlash->pDataFlashDesc->tx_cmd_pt = pDataFlash->pDataFlashDesc->command ;
+ pDataFlash->pDataFlashDesc->tx_cmd_size = 4 ;
+ pDataFlash->pDataFlashDesc->rx_cmd_pt = pDataFlash->pDataFlashDesc->command ;
+ pDataFlash->pDataFlashDesc->rx_cmd_size = 4 ;
- pDataFlash->pDataFlashDesc->rx_data_pt = dataBuffer ;
- pDataFlash->pDataFlashDesc->tx_data_pt = dataBuffer ;
- pDataFlash->pDataFlashDesc->rx_data_size = SizeToWrite ;
- pDataFlash->pDataFlashDesc->tx_data_size = SizeToWrite ;
+ 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);
+ return AT91F_SpiWrite(pDataFlash->pDataFlashDesc);
}
@@ -404,7 +401,6 @@ AT91S_DataFlashStatus AT91F_PartialPageWrite (
}
-
/*------------------------------------------------------------------------------*/
/* Function Name : AT91F_DataFlashWrite_Overloaded */
/* Object : */
@@ -422,11 +418,11 @@ AT91S_DataFlashStatus AT91F_DataFlashWrite(
AT91F_SpiEnable(pDataFlash->pDevice->cs);
- if ( (dest + size) > (pDataFlash->pDevice->pages_size * (pDataFlash->pDevice->pages_number)))
+ 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 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)
@@ -438,12 +434,12 @@ AT91S_DataFlashStatus AT91F_DataFlashWrite(
AT91F_DataFlashWaitReady(pDataFlash->pDataFlashDesc, 1000);
/* Update size, source and destination pointers */
- size -= length;
- dest += length;
- src += length;
- }
+ size -= length;
+ dest += length;
+ src += length;
+ }
- while (( size - pDataFlash->pDevice->pages_size ) >= 0 ) {
+ while (( size - pDataFlash->pDevice->pages_size ) >= 0 ) {
/* program dataflash page */
if(!AT91F_DataFlashPagePgmBuf(pDataFlash, src, dest, pDataFlash->pDevice->pages_size ))
return DATAFLASH_ERROR;
@@ -451,20 +447,20 @@ AT91S_DataFlashStatus AT91F_DataFlashWrite(
AT91F_DataFlashWaitReady(pDataFlash->pDataFlashDesc, 1000);
/* Update size, source and destination pointers */
- size -= pDataFlash->pDevice->pages_size ;
- dest += pDataFlash->pDevice->pages_size ;
- src += pDataFlash->pDevice->pages_size ;
- }
+ size -= pDataFlash->pDevice->pages_size ;
+ dest += pDataFlash->pDevice->pages_size ;
+ src += pDataFlash->pDevice->pages_size ;
+ }
- /* If still some bytes to read */
- if ( size > 0 ) {
+ /* If still some bytes to read */
+ if ( size > 0 ) {
/* program dataflash page */
if(!AT91F_PartialPageWrite(pDataFlash, src, dest, size) )
return DATAFLASH_ERROR;
AT91F_DataFlashWaitReady(pDataFlash->pDataFlashDesc, 1000);
}
- return DATAFLASH_OK;
+ return DATAFLASH_OK;
}
@@ -501,7 +497,7 @@ int AT91F_DataFlashRead(
buffer += SizeToRead;
}
- return DATAFLASH_OK;
+ return DATAFLASH_OK;
}
@@ -514,8 +510,8 @@ int AT91F_DataFlashRead(
int AT91F_DataflashProbe(int cs, AT91PS_DataflashDesc pDesc)
{
AT91F_SpiEnable(cs);
- AT91F_DataFlashGetStatus(pDesc);
- return((pDesc->command[1] == 0xFF)? 0: pDesc->command[1] & 0x3C);
+ AT91F_DataFlashGetStatus(pDesc);
+ return((pDesc->command[1] == 0xFF)? 0: pDesc->command[1] & 0x3C);
}
#endif
generated by cgit v1.1 at 2024-11-15 23:13:39 +0000