CCS/TMS320F28379D: scia problem

thanks for the help, i have try to change my code but i dont sen any change on my pins 28 29 exit :(

if you try the code you can see that using pin 42 43 you have the true exit (on the serial monitor) but using the others 2 pins instead, you dont have any exit(looking with an arduino)...

i dont understand where is the problem....

#include <math.h>
#include "F28x_Project.h"
#include <stdio.h>
Uint16 LoopCount=0;
Uint16 Received[100];
int vettore[5]={1,2,3,4,5};
Uint16 n=4;
int x=0;
Uint16 ReceivedChar;
Uint16 i=0;
int prova=1;
int fine=100;
float f=2.43;
float *f_ptr=&f;

float nx = 3.567;

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

void scia_rec (void);
void scia_float(int *f);
void ftoa(float n, char* res, int afterpoint);
void main(void)

{ InitSysPll(XTAL_OSC, IMULT_20, FMULT_0, PLLCLK_BY_2);
char *msg;

InitSysCtrl();
InitGpio();

//GPIO_SetupPinMux(43, GPIO_MUX_CPU1, 0x0F);
//GPIO_SetupPinOptions(43, GPIO_INPUT, GPIO_PUSHPULL);
//GPIO_SetupPinMux(42, GPIO_MUX_CPU1, 0x0F);
//GPIO_SetupPinOptions(42, GPIO_OUTPUT, GPIO_ASYNC);
GPIO_SetupPinMux (29 , GPIO_MUX_CPU1 , 1 );
GPIO_SetupPinOptions(29 , GPIO_OUTPUT , GPIO_ASYNC);
GPIO_SetupPinMux (28 , GPIO_MUX_CPU1 , 1 );
GPIO_SetupPinOptions(28 , GPIO_INPUT , GPIO_PUSHPULL);
DINT;
InitPieCtrl();
IER = 0x0000;
IFR = 0x0000;

InitPieVectTable();

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

__byte(&fine,1) = fine + '0';
for(LoopCount=0;LoopCount<1000;LoopCount++) {

for(i=0;n>=i;i++)
{
__byte(&prova,0) = vettore[i]+ '0';

SciaRegs.SCITXBUF.all =prova;

}
i=0;
//if (i=n){SciaRegs.SCITXBUF.all =fine; }
DELAY_US(500000);

}
}

void scia_rec (void)
{
while(SciaRegs.SCIFFRX.bit.RXFFST == 0) { } // wait for empty state
Received[x] = SciaRegs.SCIRXBUF.all;
x++;
}
void scia_echoback_init()
{

SciaRegs.SCICCR.all = 0x0007; // 1 stop bit, No loopback
SciaRegs.SCICTL1.all = 0x0003; // enable TX, RX, internal SCICLK,
SciaRegs.SCICTL2.all = 0x0003;
SciaRegs.SCICTL2.bit.TXINTENA = 1;
SciaRegs.SCICTL2.bit.RXBKINTENA = 1;
SciaRegs.SCIHBAUD.all = 0x0002;
SciaRegs.SCILBAUD.all = 0x008B;

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

ScibRegs.SCICCR.all = 0x0007; // 1 stop bit, No loopback
// No parity,8 char bits,
// async mode, idle-line protocol
ScibRegs.SCICTL1.all = 0x0003; // enable TX, RX, internal SCICLK,
// Disable RX ERR, SLEEP, TXWAKE
ScibRegs.SCICTL2.all = 0x0003; //enable TX,RX interrupt
ScibRegs.SCICTL2.bit.TXINTENA = 1;
ScibRegs.SCICTL2.bit.RXBKINTENA = 1;

ScibRegs.SCIHBAUD.all = 0x0002;
ScibRegs.SCILBAUD.all = 0x008B;
ScibRegs.SCICTL1.all = 0x0023; // Relinquish SCI from Reset
}

void scia_xmit(int a)
{
while (SciaRegs.SCIFFTX.bit.TXFFST != 0) {}
SciaRegs.SCITXBUF.all =a;

while (ScibRegs.SCIFFTX.bit.TXFFST != 0) {}
ScibRegs.SCITXBUF.all =a;

}
void scia_msg(char * msg)
{
int i;
i = 0;
while(msg[i]!='\0')
{scia_xmit(msg[i]); i++;}}
void scia_float(int *f)
{
int i;
i = 0;
while(f[i]!='\0')
{scia_xmit(f[i]); i++;}}

void scib_fifo_init(void)
{
ScibRegs.SCICCR.all = 0x0007;
ScibRegs.SCICTL1.all = 0x0003;
ScibRegs.SCIHBAUD.all = 0x0000;

ScibRegs.SCIFFTX.all = 0xE040;

ScibRegs.SCIFFRX.bit.RXFFINTCLR =1;
ScibRegs.SCIFFRX.bit.RXFIFORESET = 1;
}

void scia_fifo_init()
{
SciaRegs.SCIFFTX.all = 0xE040;
SciaRegs.SCIFFRX.all = 0x2044;
SciaRegs.SCIFFCT.all = 0x0;}

hi ,

How are you connecting these pins to the serial monitor ? is it using an RS232 cable or something ?

Regards.

I'm using the standard usb cable, i have problem when i change the pins configuration...

I need to use other 2 pins like 28 29 but my code dont work:(

I dont find any example code with scia pins different from 42 43...can you help me?

Thanks :)

hi,

leonardo luchetti said:

I dont find any example code with scia pins different from 42 43...can you help me?

That's because the launchpad board has the FTDI and circuitry to connect only these 2 GPIO pins to the usual USB cable .

leonardo luchetti said:

I need to use other 2 pins like 28 29

If this is needed you would need to use some external cable connections like the RS232 cable or a USB to UART converter cable and map it to the GPIO that you want to use.

Regards.

Hi meghana thanks help me, i need onli 2 pins to transimt and read differerents from 42-43 to comunicate wih an arduino

I have try many example also with scib but i dont find one that work

I m only looking to send a simple "hello word" to an arduino and receive a echoback but its hardest then prevision...in 2 month i dont transmit nothing

I use just 42 43 to comunicate with pc but i need use other 2 pins... thank for help

No i have tried with 2 normal electric wire but with many configuration and nothing is change...no comunication between these..