TMS320F28335: SPI Communication

Hi Gautam,
Thanks For suggestion.
I have tried with that sample program by changing the LoopBack concept to master and slave.
Actually, i want to communicate the master to a slave by chip select configuration. while configuring communication with master and slave, the slave is not reading the data.

Without Chip select, i am giving continuous varying data to slave through the master. the slave is giving random data.

this is my master code

void main(void)
{

Uint16 i;
InitSysCtrl();
InitSpiaGpio();
DINT;
IER = 0x0000;
IFR = 0x0000;
InitPieCtrl();
InitPieVectTable();

EALLOW; // This is needed to write to EALLOW protected registers
PieVectTable.SPIRXINTA = &spiRxFifoIsr;
PieVectTable.SPITXINTA = &spiTxFifoIsr;
EDIS; // This is needed to disable write to EALLOW protected

spi_fifo_init(); // Initialize the SPI only
// Initialize the send data buffer
for(i=0; i<8; i++)
{
sdata[i] = i;
}
rdata_point = 0;

PieCtrlRegs.PIECTRL.bit.ENPIE = 1; // Enable the PIE block
PieCtrlRegs.PIEIER6.bit.INTx1=1; // Enable PIE Group 6, INT 1
PieCtrlRegs.PIEIER6.bit.INTx2=1; // Enable PIE Group 6, INT 2
IER=0x0021; // Enable CPU INT6
EINT; // Enable Global Interrupts


void spi_fifo_init()
{
// Initialize SPI FIFO registers
SpiaRegs.SPICCR.bit.SPISWRESET=0; // Reset SPI
SpiaRegs.SPICCR.all=0x000F; //16-bit character, Loopback mode
SpiaRegs.SPICCR.bit.CLKPOLARITY=1; // 1=Data Transfer on the
SpiaRegs.SPICTL.all=0x0017; //Interrupt enabled, Master/Slave
SpiaRegs.SPISTS.all=0x0000;
SpiaRegs.SPIBRR=0x0063; // Baud rate
SpiaRegs.SPIFFTX.all=0xC020; // Enable FIFO's, set TX FIFO level
SpiaRegs.SPIFFRX.all=0x0028; // Set RX FIFO level to 8
SpiaRegs.SPIFFCT.all=0x0000;
// SpiaRegs.SPIFFCT.bit.TXDLY=6;
SpiaRegs.SPIPRI.all=0x0010;
SpiaRegs.SPICCR.bit.SPISWRESET=1; // Enable SPI
SpiaRegs.SPIFFTX.bit.TXFIFO=1;
SpiaRegs.SPIFFRX.bit.RXFIFORESET=1;
}

__interrupt void spiTxFifoIsr(void)
{
Uint16 i;
for(i=0;i<8;i++)
{
SpiaRegs.SPITXBUF=sdata[i]; // Send data
}

for(i=0;i<8;i++) // Increment data for next cycle
{
sdata[i] = sdata[i]+ 1;
}
SpiaRegs.SPIFFTX.bit.TXFFINTCLR=1; // Clear Interrupt flag
PieCtrlRegs.PIEACK.all|=0x20; // Issue PIE ACK
}

__interrupt void spiRxFifoIsr(void)
{
Uint16 i;

for(i=0;i<8;i++)
{
rdata[i]=SpiaRegs.SPIRXBUF; // Read data
}
for(i=0;i<8;i++) // Check received data
{
if(rdata[i] != rdata_point+i);// error();
}
rdata_point++;
SpiaRegs.SPIFFRX.bit.RXFFOVFCLR=1; // Clear Overflow flag
SpiaRegs.SPIFFRX.bit.RXFFINTCLR=1; // Clear Interrupt flag
PieCtrlRegs.PIEACK.all|=0x20; // Issue PIE ack
}

and this my slave code

void main(void)
{


InitSysCtrl();
InitSpiaGpio();
DINT;
IER = 0x0000;
IFR = 0x0000;

InitPieCtrl();
InitPieVectTable();

EALLOW; // This is needed to write to EALLOW protected registers
PieVectTable.SPIRXINTA = &spiRxFifoIsr;
PieVectTable.SPITXINTA = &spiTxFifoIsr;
EDIS; // This is needed to disable write to EALLOW protected
spi_fifo_init(); // Initialize the SPI only
rdata_point = 0;

PieCtrlRegs.PIECTRL.bit.ENPIE = 1; // Enable the PIE block
PieCtrlRegs.PIEIER6.bit.INTx1=1; // Enable PIE Group 6, INT 1
PieCtrlRegs.PIEIER6.bit.INTx2=1; // Enable PIE Group 6, INT 2
IER=0x0020; // Enable CPU INT6
EINT; // Enable Global Interrupts

void spi_fifo_init()
{
// Initialize SPI FIFO registers
SpiaRegs.SPICCR.bit.SPISWRESET=0; // Reset SPI
SpiaRegs.SPICCR.all=0x004F; //16-bit character
SpiaRegs.SPICTL.all=0x0012; //Interrupt enabled, Master/Slave
SpiaRegs.SPISTS.all=0x0000;
SpiaRegs.SPIBRR=0x0063; // Baud rate
SpiaRegs.SPIFFTX.all=0xC028; // Enable FIFO's, set TX FIFO level
SpiaRegs.SPIFFRX.all=0x0028; // Set RX FIFO level to 8
SpiaRegs.SPIFFCT.all=0x0000;
SpiaRegs.SPIPRI.all=0x0010;
SpiaRegs.SPICCR.bit.SPISWRESET=1; // Enable SPI
SpiaRegs.SPIFFTX.bit.TXFIFO=1;
SpiaRegs.SPIFFRX.bit.RXFIFORESET=1;
}

__interrupt void spiTxFifoIsr(void)
{
Uint16 i;

for(i=0;i<8;i++)
{
SpiaRegs.SPITXBUF=sdata[i]; // Send data
}

for(i=0;i<8;i++) // Increment data for next cycle
{
sdata[i] = sdata[i]+ 1;
}
SpiaRegs.SPIFFTX.bit.TXFFINTCLR=1; // Clear Interrupt flag
PieCtrlRegs.PIEACK.all|=0x20; // Issue PIE ACK
}

__interrupt void spiRxFifoIsr(void)
{
Uint16 i;

for(i=0;i<8;i++)
{
rdata[i]=SpiaRegs.SPIRXBUF; // Read data
}
for(i=0;i<8;i++) // Check received data
{
if(rdata[i] != rdata_point+i);// error();
}
rdata_point++;
SpiaRegs.SPIFFRX.bit.RXFFOVFCLR=1; // Clear Overflow flag
SpiaRegs.SPIFFRX.bit.RXFFINTCLR=1; // Clear Interrupt flag
PieCtrlRegs.PIEACK.all|=0x20; // Issue PIE ack
}


Kindly suggest me where i have to correction.

Thanks ans Regards