CCS/TMS320F28377S: C2000

Part Number: TMS320F28377S
Other Parts Discussed in Thread: CONTROLSUITE

Tool/software: Code Composer Studio

Hi all,

I am using TMS320F28377s Delfino controller. In this i want to use UART communication for my application.

I studied example code in controlsuite and i loaded that example code(echo back) to My launch pad,

My issue is the program pointer stopped in // wait for empty state line, and no data to be transmit or receive.

i pasted my code below.

Regards,

Yuvaraj

//
// Included Files
//
#include "F28x_Project.h"

Uint16 LoopCount;

void scia_echoback_init(void);
void scia_fifo_init(void);
void scia_xmit(int a);
void scia_msg(char *msg);

void main(void)
{
Uint16 ReceivedChar;
char *msg;

InitSysCtrl();
InitGpio();

GPIO_SetupPinMux(28, GPIO_MUX_CPU1, 1);
GPIO_SetupPinOptions(28, GPIO_INPUT, GPIO_PUSHPULL);
GPIO_SetupPinMux(29, GPIO_MUX_CPU1, 1);
GPIO_SetupPinOptions(29, GPIO_OUTPUT, GPIO_ASYNC);

DINT;
InitPieCtrl();

IER = 0x0000;
IFR = 0x0000;
InitPieVectTable();

LoopCount = 0;

scia_fifo_init(); // Initialize the SCI FIFO
scia_echoback_init(); // Initialize SCI for echoback

msg = "\r\n\n\nHello World!\0";
scia_msg(msg);

msg = "\r\nYou will enter a character, and the DSP will echo it back! \n\0";
scia_msg(msg);

for(;;)
{
msg = "\r\nEnter a character: \0";
scia_msg(msg);

while(SciaRegs.SCIFFRX.bit.RXFFST == 0) { } // wait for empty state

ReceivedChar = SciaRegs.SCIRXBUF.all;

msg = " You sent: \0";
scia_msg(msg);
scia_xmit(ReceivedChar);

LoopCount++;
}
}

// scia_echoback_init - Test 1,SCIA DLB, 8-bit word, baud rate 0x000F,
// default, 1 STOP bit, no parity
void scia_echoback_init()
{
SciaRegs.SCICCR.all = 0x0007; // 1 stop bit, No loopback
// No parity,8 char bits,
// async mode, idle-line protocol
SciaRegs.SCICTL1.all = 0x0003; // enable TX, RX, internal SCICLK,
// Disable RX ERR, SLEEP, TXWAKE
SciaRegs.SCICTL2.all = 0x0003;
SciaRegs.SCICTL2.bit.TXINTENA = 1;
SciaRegs.SCICTL2.bit.RXBKINTENA = 1;

// SCIA at 9600 baud
// @LSPCLK = 50 MHz (200 MHz SYSCLK) HBAUD = 0x02 and LBAUD = 0x8B.
// @LSPCLK = 30 MHz (120 MHz SYSCLK) HBAUD = 0x01 and LBAUD = 0x86.
//
SciaRegs.SCIHBAUD.all = 0x0002;
SciaRegs.SCILBAUD.all = 0x008B;

SciaRegs.SCICTL1.all = 0x0023; // Relinquish SCI from Reset
}

// scia_xmit - Transmit a character from the SCI
void scia_xmit(int a)
{
while (SciaRegs.SCIFFTX.bit.TXFFST != 0) {}
SciaRegs.SCITXBUF.all =a;
}

// scia_msg - Transmit message via SCIA
void scia_msg(char * msg)
{
int i;
i = 0;
while(msg[i] != '\0')
{
scia_xmit(msg[i]);
i++;
}
}

// scia_fifo_init - Initialize the SCI FIFO
void scia_fifo_init()
{
SciaRegs.SCIFFTX.all = 0xE040;
SciaRegs.SCIFFRX.all = 0x2044;
SciaRegs.SCIFFCT.all = 0x0;
}