/*
** Main Function.
*/
int main(void)
{
unsigned char choice = 0;
/* Enable the clocks for McSPI0 module.*/
McSPI0ModuleClkConfig();
/* Perform Pin-Muxing for SPI0 Instance.*/
McSPIPinMuxSetup(0);
/* Perform Pin-Muxing for CS0 of SPI0 Instance.*/
McSPI0CSPinMuxSetup(MCSPI_CH_NUM);
/* Initialize the UART utility functions.*/
UARTStdioInit();
/* Enable IRQ in CPSR.*/
IntMasterIRQEnable();
UARTPuts("Here the McSPI controller on the SOC communicates with ",-1);
UARTPuts("the McSPI Flash.\r\n\r\n",-1);
/* Initialize the EDMA3 instance.*/
EDMA3Initialize();
/* Request EDMA3CC for Tx and Rx channels for SPI0. */
RequestEDMA3Channels();
/* Set up the McSPI instance.*/
McSPISetUp();
/* Enable the SPI Flash for writing to it. */
WriteEnable();
UARTPuts("Do you want to erase a sector of the flash before writing to it ?.", -1);
UARTPuts("\r\nInput y(Y)/n(N) to proceed.\r\n", -1);
choice = UARTGetc();
UARTPutc(choice);
if(('y' == choice) || ('Y' == choice))
{
/* Erasing the specified sector of SPI Flash. */
FlashSectorErase();
}
/* Enable the SPI Flash for writing to it. */
WriteEnable();
/* Write data of 1 page size into a page of Flash.*/
FlashPageProgram();
/* Read data of 1 page size from a page of flash.*/
ReadFromFlash();
/* Verify the data written to and read from Flash are same or not.*/
VerifyData();
while(1);
}
/**
* Set the time of the alarm in HH:MM:SS.
*
* @param alarm pointer to RTCTime object that contains the alarm time
*/
void ISL12026::EnableAlarm(const RTCTime *alarm)
{
uint8_t data[20];
// Set the time register values.
WriteEnable();
I2C0::GetInstance()->Start(WriteCCR);
data[0] = 0x00;
data[1] = 0x00;
// Seconds.
data[2] = 0x80 | ConvertDecimalToBCD(alarm->seconds);
// Minutes.
data[3] = 0x80 | ConvertDecimalToBCD(alarm->minutes);
// Hours.
data[4] = 0x80 | ConvertDecimalToBCD(alarm->hours);
data[5] = 0x00;
data[6] = 0x00;
data[7] = 0x00;
data[8] = 0x00;
data[9] = 0x00;
data[10] = 0x00;
I2C0::GetInstance()->Write(data, 5);
I2C0::GetInstance()->Stop();
WriteDisable();
// Set the alarm and interrupt enable bits.
WriteEnable();
I2C0::GetInstance()->Start(WriteCCR);
data[0] = 0x00;
data[1] = ControlRegister;
data[2] = ControlRegisterAlarm1 | ControlRegisterInterruptMode;
I2C0::GetInstance()->Write(data, 3);
I2C0::GetInstance()->Stop();
WriteDisable();
}
void FlashDev::WriteStatusReg (StatDataReg &data)
{
WriteEnable ();
u16 *d = (u16 *)((void*)&data);
*d |= 0x0100L;
spi.Read (d, 1,d, 1, Spi::Flash);
}
/******************************************************************************
函数(模块)名称:void SectorErase(unsigned int SectorAddr)
功能: FLASH块擦除函数
输入参数:FLASH块地址，从0开始
输出参数: 无
其它说明:
*******************************************************************************/
void BlockErase_SST25(unsigned int BlockAddr)
{
unsigned char Addr0,Addr1,Addr2;
unsigned long WritedAddr;
WritedAddr = (unsigned long)BlockAddr;
WritedAddr=WritedAddr<<15;
Addr0=(unsigned char)WritedAddr;
WritedAddr=WritedAddr>>8;
Addr1=(unsigned char)WritedAddr;
WritedAddr=WritedAddr>>8;
Addr2=(unsigned char)WritedAddr;
WriteEnable();
SPI_CE_L;
SPI_Send_Byte(BlorkErase_Command);//发送命令
SPI_Send_Byte(Addr2); //发送地址
SPI_Send_Byte(Addr1);
SPI_Send_Byte(Addr0);
SPI_CE_H;
WriteDisable();
while(ReadStatus()&Busy_BIT);
}
uint32_t SPIFlash::EraseChip (void)
{
// Wait until the device is ready or a timeout occurs
if (WaitForReady())
return 0;
// Make sure the chip is write enabled
WriteEnable (1);
// Make sure the write enable latch is actually set
uint8_t status;
status = readstatus();
if (!(status & SPIFLASH_STAT_WRTEN))
{
// Throw a write protection error (write enable latch not set)
return 0;
}
// Send the erase chip command
digitalWrite(_ss, LOW);
spiwrite(W25Q16BV_CMD_CHIPERASE);
digitalWrite(_ss, HIGH);
// Wait until the busy bit is cleared before exiting
// This can take up to 10 seconds according to the datasheet!
while (readstatus() & SPIFLASH_STAT_BUSY);
return 1;
}
/******************************************************************************
*
*
* This function writes to the serial FLASH connected to the SPI interface.
*
* @param InstancePtr is a pointer to the XIsf component to use.
* @param Address contains the address to write data to in the FLASH.
* @param ByteCount contains the number of bytes to write.
* @param Command is the command used to write data to the flash.
*
* @return None.
*
* @note None.
*
******************************************************************************/
int FlashWrite(XIsf *InstancePtr, u32 Address, u32 ByteCount, u8 Command)
{
XIsf_WriteParam WriteParam;
int Status;
WriteEnable(InstancePtr);
WriteParam.Address = Address;
WriteParam.NumBytes = ByteCount;
WriteParam.WritePtr = WriteBuffer;
/*
* Perform the Write operation.
*/
Status = XIsf_Write(&Isf, Command, (void*) &WriteParam);
if(Status != XST_SUCCESS) {
return XST_FAILURE;
}
/*
* Wait till the Flash is not Busy.
*/
Status = IsfWaitForFlashNotBusy();
if(Status != XST_SUCCESS) {
return XST_FAILURE;
}
return XST_SUCCESS;
}
/******************************************************************************
函数(模块)名称:void MultiByteWrite(unsigned long WriteAddr,unsigned char *WriteData,unsigned int WriteLent)
功能: FLASH字节写函数
输入参数:写地址，写数据
输出参数: 无
其它说明:
*******************************************************************************/
void MultiByteWrite_SST25(unsigned long WriteAddr,unsigned char *WriteData,unsigned int WriteLent)
{
unsigned char Addr0,Addr1,Addr2;
Addr0=(unsigned char)WriteAddr;
WriteAddr=WriteAddr>>8;
Addr1=(unsigned char)WriteAddr;
WriteAddr=WriteAddr>>8;
Addr2=(unsigned char)WriteAddr;
WriteEnable();
SPI_CE_L;
SPI_Send_Byte(AAIProgram_Command); //发送命令
SPI_Send_Byte(Addr2); //发送地址
SPI_Send_Byte(Addr1);
SPI_Send_Byte(Addr0);
SPI_Send_Byte(*WriteData++); //发送数据
SPI_CE_H;
//__delay_cycles(50); // Delay;
while(ReadStatus()&Busy_BIT);
for(unsigned int i=0;i<WriteLent-1;i++)
{
SPI_CE_L;
SPI_Send_Byte(AAIProgram_Command); //发送命令
SPI_Send_Byte(*WriteData++); //发送数据
SPI_CE_H;
while(ReadStatus()&Busy_BIT);
}
WriteDisable();
while(ReadStatus()&WEL_BIT);
}
void FlashDev::SectorErase (u32 addr)
{
while (isBusy ()) { };
WriteEnable ();
u32 d = addr | 0xD8000000L;
// while (spi.isBusy());
spi.Write (&d, 4, Spi::Flash);
}
void FlashDev::PageProgram2 (u32 addr, u16* src, u16 len)
{
while (isBusy ()) { };
WriteEnable ();
u64 d = ((u64)addr & 0x00ffffff) | 0x02000000LL;
// while (spi.isBusy());
spi.Write2 (&d, 4,src,len, Spi::Flash);
}
void FlashDev::PageProgram2 (u32 addr, u16 data)
{
while (isBusy ()) { };
WriteEnable ();
u64 d = (((u64)addr & 0x00ffffff) << 8) | 0x0200000000LL | (data & 0xff);
// while (spi.isBusy());
spi.Write (&d, 5, Spi::Flash);
}
void FlashDev::PageProgram (u32 addr, u16 data)
{
while (isBusy ()) { };
WriteEnable ();
u64 d = ((u64)addr<<16) | 0x020000000000LL | data;
// while (spi.isBusy());
spi.Write (&d, 6, Spi::Flash);
}
void FlashDev::BulkErase (void)
{
while (isBusy ()) { };
WriteEnable ();
u16 d = 0xC7;
// while (spi.isBusy());
spi.Write (&d, 1, Spi::Flash);
}
bool FRAM::Write (u16 address, s32 data)
{
_ASSERT(address + 4 < cFRAM_SIZE);
WriteEnable();
s64 buf = 0x020000LL | (u64)address;
spi.Write (&buf, 3, &data, 4, Spi::FRAM); // Write Memory Data
return true;
}
/******************************************************************************
函数(模块)名称:void ChipErase(void)
功能: FLASH芯片全部擦除函数
输入参数:无
输出参数: 无
其它说明:
*******************************************************************************/
void ChipErase_SST25(void)
{
WriteEnable();
SPI_CE_L;
SPI_Send_Byte(ChipErase_Command);//发送命令
SPI_CE_H;
WriteDisable();
while(ReadStatus()&Busy_BIT);
}
bool FRAM::Write2 ( u16 address, s16 *data, u16 len )
{
_ASSERT(address + len < cFRAM_SIZE);
WriteEnable();
u32 buf = 0x020000L | (u32)address;
spi.Write2 (&buf, 3, data, len, Spi::FRAM); // Write Memory Data
return true;
}
// 页写
// pBuf:数据存储区
// WriteAddr:开始写入的地址(24bit)
// NumBytesToWrite:要写入的字节数(最大256),该数不应该超过该页的剩余字节数!!!
// 对于 W25P80/16，每次页写时，必须以偶数地址为起始地址，且至少写入 2 个字节数据。
// 以下实现中：
// 1) 当要写入的字节数大于该页剩余字节数时，将忽略超过的字节；
// 2) 当写入起始地址为奇地址时，则先读出前一地址数据，然后从前一地址开始写入，将此前读出的该地址数据作为第一个数据；
// 3) 当写入结束地址为偶地址时，则继续向下一地址写入无效数据 BLANK_8（等同于未写入）。
bool CSerialFlash::PageProgram(u8* pBuf, u32 WriteAddr, u32 NumBytesToWrite, u32 *NumBytesWritten)
{
if (WriteAddr >= CHIP_SIZE)
return false;
if (NumBytesToWrite == 0)
{
if (NumBytesWritten)
*NumBytesWritten = NumBytesToWrite;
return true;
}
NumBytesToWrite = min(NumBytesToWrite, PAGE_SIZE - WriteAddr%PAGE_SIZE);
if (NumBytesWritten)
*NumBytesWritten = NumBytesToWrite;
u8 tmp;
u32 odd = 0;
if (WriteAddr%2 == 1) // As to W25P80/16, Write once at least 2 bytes.
{
odd = 1;
WriteAddr--;
u32 numBytesRead = 0;
Read(&tmp, WriteAddr, 1, &numBytesRead);
if (numBytesRead != 1)
return false;
}
u32 addr = WriteAddr<<8;
RevertByteOrder32(&addr);
if (!WriteEnable())
return false;
NssLow();
m_spi.Send(FLASH_PageProgram);
m_spi.Send(addr, 3);
if (odd)
m_spi.Send(tmp);
for (int i = 0; i < NumBytesToWrite; i++)
m_spi.Send(pBuf[i]);
if ((odd + NumBytesToWrite)%2 == 1)
m_spi.Send(BLANK_8);
NssHigh();
bool res = WaitForReady_WTO();
if (!WriteDisable())
return false;
else
return res;
}
/******************************************************************************
*
*
* This function erases the sectors in the serial FLASH connected to the SPI
* interface.
*
* @param InstancePtr is a pointer to the XIsf component to use.
* @param Address contains the address of the first sector which needs to
* be erased.
* @param ByteCount contains the total size to be erased.
*
* @return None.
*
* @note None.
*
******************************************************************************/
int FlashErase(XIsf *InstancePtr, u32 Address, u32 ByteCount)
{
int Status;
int Sector;
/*
* If the erase size is less than the total size of the flash, use
* sector erase command
*/
for (Sector = 0; Sector < ((ByteCount / SECTOR_SIZE) + 1); Sector++) {
/*
* Write enable instruction has to be executed prior to
* any Write operation.
*/
WriteEnable(InstancePtr);
/*
* Perform the Sector Erase operation.
*/
TransferInProgress = TRUE;
Status = XIsf_Erase(InstancePtr, XISF_SECTOR_ERASE, Address);
if(Status != XST_SUCCESS) {
return XST_FAILURE;
}
/*
* Wait till the Transfer is complete and check if there are any errors
* in the transaction.
*/
while(TransferInProgress);
if(ErrorCount != 0) {
return XST_FAILURE;
}
/*
* Wait till the Flash is not Busy.
*/
Status = IsfWaitForFlashNotBusy();
if(Status != XST_SUCCESS) {
return XST_FAILURE;
}
Address += SECTOR_SIZE;
}
return XST_SUCCESS;
}
/**
* Disable the alarm.
*/
void ISL12026::DisableAlarm()
{
uint8_t data[4];
// Set the alarm enable bit.
WriteEnable();
I2C0::GetInstance()->Start(WriteCCR);
data[0] = 0x00;
data[1] = ControlRegister;
data[2] = 0x00;
I2C0::GetInstance()->Write(data, 3);
I2C0::GetInstance()->Stop();
WriteDisable();
}
void iWriteSEE( long address, int data)
{ // write a 16-bit value starting at an even address
// wait until any work in progress is completed
while ( ReadSR() & 0x1); // check the WIP flag
// Set the Write Enable Latch
WriteEnable();
// perform a 16-bit write sequence (2 byte page write)
CSEE = 0; // select the Serial EEPROM
WriteSPI2( SEE_WRITE); // write command
WriteSPI2( address>>8); // address MSB first
WriteSPI2( address & 0xfe); // address LSB (word aligned)
WriteSPI2( data >>8); // send msb
WriteSPI2( data & 0xff); // send lsb
CSEE = 1;
}//iWriteSEE
bool CSerialFlash::SectorErase(u32 addr)
{
addr <<= 8;
RevertByteOrder32(&addr);
if (!WriteEnable())
return false;
NssLow();
m_spi.Send(FLASH_BlockErase);
m_spi.Send(addr, 3);
NssHigh();
bool res = WaitForReady_WTO();
if (!WriteDisable())
return false;
else
return res;
}
/**
* Set the RTC time to the RTCTime object value.
*
* @param time pointer to desired time.
*/
void ISL12026::SetTime(const RTCTime *time)
{
uint8_t data[10];
WriteEnable();
// Set the time register values.
I2C0::GetInstance()->Start(WriteCCR);
data[0] = 0x00;
data[1] = 0x30;
// Seconds.
data[2] = ConvertDecimalToBCD(time->seconds);
// Minutes.
data[3] = ConvertDecimalToBCD(time->minutes);
// Hours.
data[4] = 0x80 | ConvertDecimalToBCD(time->hours);
// Days.
data[5] = ConvertDecimalToBCD(time->day);
// Month.
data[6] = ConvertDecimalToBCD(time->month);
// Tens/ones of years.
data[7] = ConvertDecimalToBCD(time->year % 100);
// Day of week.
data[8] = 0x00;
// Thousands/hundreds of years.
data[9] = ConvertDecimalToBCD(time->year / 100);
I2C0::GetInstance()->Write(data, 10);
I2C0::GetInstance()->Stop();
WriteDisable();
}
bool CSerialFlash::ChipErase(void)
{
if (!WriteEnable())
return false;
NssLow();
m_spi.Send(FLASH_ChipErase);
NssHigh();
bool res = false;
for (int i = 0; i < 20; i++)
{
res = WaitForReady_WTO();
if (res)
break;
}
if (!WriteDisable())
return false;
else
return res;
}
bool CSerialFlash::WriteSR(u8 sr)
{
// Note: WriteEnable is a must to W25P80/16, but not to OTP.
// This is because the SR in W25P80/16 there are some non-volatile bits,
// while the SR in OTP are all volatile bits.
// So, the Write operation there is life limit to SerialFlash's SR.
if (!WriteEnable())
return false;
NssLow();
m_spi.Send(FLASH_WriteStatusReg);
m_spi.Send(sr);
NssHigh();
bool res = WaitForReady_WTO();
if (!WriteDisable())
return false;
else
return res;
}
uint32_t SPIFlash::EraseSector (uint32_t sectorNumber)
{
// Make sure the address is valid
if (sectorNumber >= W25Q16BV_SECTORS)
{
return 0;
}
// Wait until the device is ready or a timeout occurs
if (WaitForReady())
return 0;
// Make sure the chip is write enabled
WriteEnable (1);
// Make sure the write enable latch is actually set
uint8_t status;
status = readstatus();
if (!(status & SPIFLASH_STAT_WRTEN))
{
// Throw a write protection error (write enable latch not set)
return 0;
}
// Send the erase sector command
uint32_t address = sectorNumber * W25Q16BV_SECTORSIZE;
digitalWrite(_ss, LOW);
spiwrite(W25Q16BV_CMD_SECTERASE4);
spiwrite((address >> 16) & 0xFF); // address upper 8
spiwrite((address >> 8) & 0xFF); // address mid 8
spiwrite(address & 0xFF); // address lower 8
digitalWrite(_ss, HIGH);
// Wait until the busy bit is cleared before exiting
// This can take up to 400ms according to the datasheet
while (readstatus() & SPIFLASH_STAT_BUSY);
return 1;
}
/******************************************************************************
*
*
* This function writes to the serial FLASH connected to the SPI interface.
*
* @param InstancePtr is a pointer to the XIsf component to use.
* @param Address contains the address to write data to in the FLASH.
* @param ByteCount contains the number of bytes to write.
* @param Command is the command used to write data to the flash. SPI
* device supports Byte Program command to write data to the
* flash.
*
* @return None.
*
* @note None.
*
******************************************************************************/
int FlashWrite(XIsf *InstancePtr, u32 Address, u32 ByteCount, u8 Command)
{
XIsf_WriteParam WriteParam;
int Status;
WriteEnable(InstancePtr);
WriteParam.Address = Address;
WriteParam.NumBytes = ByteCount;
WriteParam.WritePtr = WriteBuffer;
/*
* Perform the Write operation.
*/
TransferInProgress = TRUE;
Status = XIsf_Write(&Isf, Command, (void*) &WriteParam);
if(Status != XST_SUCCESS) {
return XST_FAILURE;
}
/*
* Wait till the Transfer is complete and check if there are any errors
* in the transaction.
*/
while(TransferInProgress);
if(ErrorCount != 0) {
return XST_FAILURE;
}
/*
* Wait till the Flash is not Busy.
*/
Status = IsfWaitForFlashNotBusy();
if(Status != XST_SUCCESS) {
return XST_FAILURE;
}
return XST_SUCCESS;
}
/******************************************************************************
函数(模块)名称:void ByteWrite_SST25(unsigned long WritedAddr,unsigned char WriteData)
功能: FLASH字节写函数
输入参数:写地址，写数据
输出参数: 无
其它说明:
*******************************************************************************/
unsigned char ByteWrite_SST25(unsigned long WritedAddr,unsigned char WriteData)
{
unsigned char Addr0,Addr1,Addr2;
Addr0=(unsigned char)WritedAddr;
WritedAddr=WritedAddr>>8;
Addr1=(unsigned char)WritedAddr;
WritedAddr=WritedAddr>>8;
Addr2=(unsigned char)WritedAddr;
WriteEnable();
SPI_CE_L;
SPI_Send_Byte(ByteProgram_Command);//发送命令
SPI_Send_Byte(Addr2); //发送地址
SPI_Send_Byte(Addr1);
SPI_Send_Byte(Addr0);
SPI_Send_Byte(WriteData); //发送数据
SPI_CE_H;
//WriteDisable();
while(ReadStatus()&Busy_BIT);
return 1;
}
/*
** Main function.
*/
int main(void)
{
volatile char originalData[260] = {0};
volatile char readFlash[260] = {0};
unsigned int retVal = 0;
unsigned char choice;
/* Initializes the UART Instance for serial communication. */
UARTStdioInit();
UARTPuts("Welcome to SPI EDMA application.\r\n", -1);
UARTPuts("Here the SPI controller on the SoC communicates with", -1);
UARTPuts(" the SPI Flash present on the SoM.\r\n\r\n", -1);
/* Initializes the EDMA3 Instance. */
EDMA3Initialize();
/* Initializes the SPI1 Instance. */
SPIInitialize();
/* Request EDMA3CC for Tx and Rx channels for SPI1. */
RequestEDMA3Channels();
/* Enable SPI communication. */
SPIEnable(SOC_SPI_1_REGS);
/* Enable the SPI Flash for writing to it. */
WriteEnable();
UARTPuts("Do you want to erase a sector of the flash before writing to it ?.", -1);
UARTPuts("\r\nInput y(Y)/n(N) to proceed.\r\n", -1);
choice = UARTGetc();
UARTPutc(choice);
if(('y' == choice) || ('Y' == choice))
{
/* Erasing the specified sector of SPI Flash. */
FlashSectorErase();
}
WriteEnable();
/* Program a specified Page of the SPI Flash. */
FlashPageProgram(originalData);
/* Read the contents of the page that was previously written to. */
ReadFromFlash(readFlash);
/* Verify whether the written and the read contents are equal. */
retVal = verifyData(&originalData[4], &readFlash[4], 256);
if(TRUE == retVal)
{
UARTPuts("\r\nThe data in the Flash and the one written ", -1);
UARTPuts("to it are equal.\r\n", -1);
}
else
{
UARTPuts("\r\n\r\nThe data in the Flash and the one written to it", -1);
UARTPuts(" are not equal.\r\n", -1);
}
while(1);
}
uint32_t SPIFlash::WritePage (uint32_t address, uint8_t *buffer, uint32_t len)
{
uint8_t status;
uint32_t i;
// Make sure the address is valid
if (address >= W25Q16BV_MAXADDRESS)
{
return 0;
}
// Make sure that the supplied data is no larger than the page size
if (len > W25Q16BV_PAGESIZE)
{
return 0;
}
// Make sure that the data won't wrap around to the beginning of the sector
if ((address % W25Q16BV_PAGESIZE) + len > W25Q16BV_PAGESIZE)
{
// If you try to write to a page beyond the last byte, it will
// wrap around to the start of the page, almost certainly
// messing up your data
return 0;
}
// Wait until the device is ready or a timeout occurs
if (WaitForReady())
return 0;
// Make sure the chip is write enabled
WriteEnable (1);
// Make sure the write enable latch is actually set
status = readstatus();
if (!(status & SPIFLASH_STAT_WRTEN))
{
// Throw a write protection error (write enable latch not set)
return 0;
}
// Send page write command (0x02) plus 24-bit address
digitalWrite(_ss, LOW);
spiwrite(W25Q16BV_CMD_PAGEPROG); // 0x02
spiwrite((address >> 16) & 0xFF); // address upper 8
spiwrite((address >> 8) & 0xFF); // address mid 8
if (len == 256)
{
// If len = 256 bytes, lower 8 bits must be 0 (see datasheet 11.2.17)
spiwrite(0);
}
else
{
spiwrite(address & 0xFF); // address lower 8
}
// Transfer data
for (i = 0; i < len; i++)
{
spiwrite(buffer[i]);
}
// Write only occurs after the CS line is de-asserted
digitalWrite(_ss, HIGH);
// Wait at least 3ms (max page program time according to datasheet)
delay(3);
// Wait until the device is ready or a timeout occurs
if (WaitForReady())
return 0;
return len;
}
/******************************************************************************
** INTERNAL FUNCTION DEFINITIONS
******************************************************************************/
int main(void)
{
volatile unsigned int count = 0x0FFFu;
unsigned int retVal = FALSE;
unsigned char choice = 0;
/* Enable the clocks for McSPI0 module.*/
McSPI0ModuleClkConfig();
/* Perform Pin-Muxing for SPI0 Instance */
McSPIPinMuxSetup(0);
/* Perform Pin-Muxing for CS0 of SPI0 Instance */
McSPI0CSPinMuxSetup(chNum);
/* Initialize the UART utility functions */
UARTStdioInit();
UARTPuts("Here the McSPI controller on the SoC communicates with", -1);
UARTPuts(" the SPI Flash.\r\n\r\n", -1);
/* Enable IRQ in CPSR.*/
IntMasterIRQEnable();
/* Map McSPI Interrupts to AINTC */
McSPI0AintcConfigure();
/* Do the necessary set up configurations for McSPI.*/
McSPISetUp();
/* Pass the write enable command to flash.*/
WriteEnable();
/* Wait until write enable command is successfully written to flash.*/
while(FALSE == retVal)
{
retVal = IsWriteSuccess();
}
retVal = FALSE;
UARTPuts("Do you want to erase a sector of the flash before ", -1);
UARTPuts("writing to it ?.", -1);
UARTPuts("\r\nInput y(Y)/n(N) to proceed.\r\n", -1);
choice = UARTGetc();
UARTPutc(choice);
if(('Y' == choice) || ('y' == choice))
{
/* Erase a sector of flash.*/
SectorErase();
}
/* Pass the write enable command to flash.*/
WriteEnable();
/* Wait until write enable command is successfully written to flash.*/
while(FALSE == retVal)
{
retVal = IsWriteSuccess();
}
/* Write data of 1 page size to flash.*/
WriteToFlash();
while(count--);
count = 0x0FFFu;
/* Read data of 1 page size from flash.*/
ReadFromFlash();
while(count--);
/* Verify the data written to and read from flash are same or not.*/
VerifyData();
while(1);
}